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The present dataset is a compilation of georeferenced occurrences of asteroids (Echinodermata: Aster-oidea) in the Southern Ocean. Occurrence data south of 45°S latitude were mined from various sources together with information regarding the taxonomy, the sampling source and sampling sites when available. Records from 1872 to 2016 were thoroughly checked to ensure the quality of a dataset that reaches a total of 13,840 occurrences from 4,580 unique sampling events. Information regarding the reproductive strategy (brooders vs. broadcasters) of 63 species is also made available. This dataset represents the most exhaustive occurrence database on Antarctic and Sub-Antarctic asteroids.
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Antarctic and Sub-Antarctic Asteroidea database 141
Antarctic and Sub-Antarctic Asteroidea database
Camille Moreau1,2, Christopher Mah3, Antonio Agüera1, Nadia Améziane4,
DavidBarnes5, Guillaume Crokaert1, Marc Eléaume4,6, Huw Griths5,
CharlèneGuillaumot1, Lenaïg G. Hemery6, Anna Jażdżewska7,
QuentinJossart1,8, VladimirLaptikhovsky9,10, Katrin Linse5, Kate Neill11,
Chester Sands5, omasSaucède2, Stefano Schiaparelli12,
Jacek Siciński7, Noémie Vasset4,13, BrunoDanis1
1 Marine Biology Lab, CP160/15 Université Libre de Bruxelles (ULB) 50, B-1050 Brussels, Belgium 2 UMR
CNRS 6282 Biogéosciences, Université de Bourgogne Franche-Comté (UBFC) 6 Boulevard Gabriel, F-21000
Dijon, France 3 Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian
Institution, Washington, D.C. 4 Muséum National d’Histoire Naturelle, Station de Biologie Marine, Place de
la Croix, BP 225 9182 Concarneau Cedex 5 British Antarctic Survey, High Cross, Madingley Rd, Cambridge
CB3 0ET, United Kingdom 6 Muséum National d’Histoire Naturelle, Département Origines, UMR7205
ISYEB MNHN-CNRS-UPMC-EPHE, CP51, 57 rue Cuvier, 75231 Paris Cedex 05, France 7 University
of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydro-
biology, Laboratory of Polar Biology and Oceanobiology. 12/16 Banacha st., 90-237 Lodz, Poland 8 Marine
Biology, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium 9 Centre for Environment,
Fisheries and Aquaculture Science, Pakeeld Road, Lowestoft NR33 0HT, United Kingdom 10 Shallow Ma-
rine Surveys Group, P.O. Box 598, Stanley FIQQ 1ZZ, Falkland Islands 11 National Institute of Water and
Atmospheric Research, Coasts and Oceans Centre, 301 Evans Bay Parade, Wellington, New Zealand 12 Di-
partimento di Scienze della Terra, dell’Ambiente e della Vita (DISTAV), Università di Genova, C.so Europa
26, Genova I-16132 Italy 13 Noémie Vasset has been central in compiling all POKER 2 samples, among other
things, while she was at the MNHN. She passed away August 22, 2016
Corresponding author: Camille Moreau (mr.moreau.camille@gmail.com)
Academic editor: Y. Samyn| Received 4 December 2017| Accepted 23 March 2018| Published 2 April 2018
http://zoobank.org/E149BD11-BFFB-47CD-AE05-14201C33FDBD
Citation: Moreau C, Mah C, Agüera A, Améziane N, Barnes D, Crokaert G, Eléaume M, Griths H, Guillaumot C,
Hemery LG, Jażdżewska A, Jossart Q, Laptikhovsky V, Linse K, Neill K, Sands C, Saucède T, Schiaparelli S, Siciński
J, Vasset N, Danis B (2018) Antarctic and Sub-Antarctic Asteroidea database. ZooKeys 747: 141–156. https://doi.
org/10.3897/zookeys.747.22751
ZooKeys 747: 141–156 (2018)
doi: 10.3897/zookeys.747.22751
http://zookeys.pensoft.net
Copyright Camille Moreau et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC
BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Camille Moreau et al. / ZooKeys 747: 141–156 (2018)
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Abstract
e present dataset is a compilation of georeferenced occurrences of asteroids (Echinodermata: Aster-
oidea) in the Southern Ocean. Occurrence data south of 45°S latitude were mined from various sources
together with information regarding the taxonomy, the sampling source and sampling sites when avail-
able. Records from 1872 to 2016 were thoroughly checked to ensure the quality of a dataset that reaches
a total of 13,840 occurrences from 4,580 unique sampling events. Information regarding the reproductive
strategy (brooders vs. broadcasters) of 63 species is also made available. is dataset represents the most
exhaustive occurrence database on Antarctic and Sub-Antarctic asteroids.
Keywords
Antarctic, Asteroidea, presence-only data, Southern Ocean, Sub-Antarctic
Introduction
Mapping and understanding life diversity are major issues for the community of biolo-
gists and ecologists who focus on the Southern Ocean (SO). For several years, many
initiatives such as the International Polar Year, the Census of Antarctic Marine Life
(CAML 2005–2010), the Scientic Committee on Antarctic Research: Marine Bi-
odiversity Information Network (SCAR MarBIN, www.biodiversity.aq) or the Bio-
geographic Atlas of the Southern Ocean (De Broyer et al. 2014) have also gathered
information from distinct and transversal scientic domains to provide new multidis-
ciplinary insights in the study of the SO marine ecosystems, linking biogeographic,
phylogeographic, physiological, oceanographic, and biogeochemistry data. Such pro-
grams have established the most exhaustive and accurate inventories of scientic data
ever, since the rst historical researches of James Cook in 1772–1775 in the region,
and have provided open source information systems (e.g., Register of Antarctic Marine
Species, De Broyer and Danis 2010; Global Biodiversity Information Facility, http://
www.gbif.org; Ocean Biogeographic Information System http://www.iobis.org/; Van
de Putte et al. 2015, http://www.biodiversity.aq).
is extensive assessment was pursued by major improvements in methodolo-
gies and data analyses. Improvement of dataset completeness and resolution facilitates
modelling approaches (Gutt et al. 2012) that provide interesting tools to better under-
stand distribution patterns in this poorly documented part of the world.
Among benthic taxonomic groups, Asteroidea (Echinodermata) are well repre-
sented in the SO with 12% of the global species richness present in the region (Mah
and Blake 2012). Around 300 species (Moreau et al. 2015) were reported at all depths
including some potential keystone species in benthic communities (McClintock et al.
1988, 2008). As for many taxonomic groups, adaptations of invertebrates to the polar
conditions of the SO environments have been widely reported (Peck 2002, 2016) and
have led to unique biological traits and life-strategies as well as high levels of endemism
in the region (Chown et al. 2015). In particular, reproductive strategies are diversied
in the SO with a distinction between brooding and broadcasting species (Poulin et al.
2002; Pearse et al. 2009). In asteroids, the two distinct reproductive strategies strongly
Antarctic and Sub-Antarctic Asteroidea database 143
drive species distribution patterns and the biogeography of the class in the SO (Moreau
et al. 2017).
e present dataset is a compilation of georeferenced occurrences, at species level,
for the whole class Asteroidea in the SO. Records from 1872 to 2016 have been gath-
ered from various open source databases. Data collected during recent and unpub-
lished campaigns were also added including records from literature, reaching a total
of 13,840 occurrences from 4,580 unique sampling events. is dataset represents the
most exhaustive database on Antarctic and Sub-Antarctic asteroids.
Project description
Project title: Antarctic and Sub-Antarctic Asteroidea database
Personnel: Camille Moreau, Charlène Guillaumot, Quentin Jossart, Antonio
Agüera, Guillaume Crokaert, Marc Eléaume, omas Saucède, Katrin Linse, Huw
Griths, Chester Sands, David Barnes, Vladimir Laptikhovsky, Anna Jażdżewska, Ja-
cek Siciński, Noémie Vasset, Lenaïg G. Hemery, Christopher Mah, Nadia Améziane,
Stefano.Schiaparelli, Bruno Danis
Funding: e work was supported by a “Fonds pour la formation à la Recherche
dans l’Industrie et l’Agriculture” (FRIA) grants to C. Moreau. is is contribution no.
16 to the vERSO project (http://www.versoproject.be), funded by the Belgian Science
Policy Oce (BELSPO, contract n°BR/132/A1/vERSO). is is contribution to the
IPEV programs n°1124 REVOLTA and n°1044 PROTEKER and to team SAMBA of
the Biogeosciences laboratory.
Study area descriptions / descriptor: is study focuses on the Antarctic and
Sub-Antarctic regions located at latitudes south of 45°S. e Southern Ocean is a vast
region characterised by the paucity of its scientic data (Griths 2010; Griths et al.
2011) and available collections are the compilation of several historical campaigns. e
objective of this work is to integrate the most complete database of species occurrences
for the class Asteroidea in the described geographic extent.
Design description: e compilation of occurrence data of asteroid species over the
extent of the SO was realised by gathering data available from various biodiversity in-
formation systems (OBIS, GBIF, biodiversity.aq, PANGAEA https://www.pangaea.de/)
as well as published literature, including original manuscripts (e.g., Gutt et al. 2014;
Moles et al. 2015), data papers and cruise reports. Compiled occurrences were comple-
mented with data from personal communications of unpublished works and museums
registered collections. is extensive dataset was developed to describe distribution pat-
terns in the SO as well as faunal anities among 25 Antarctic and Sub-Antarctic biore-
gions (see Moreau et al. 2017). Several analytical methods such as Bootstrap Spanning
Network, non-metrical multidimensional scaling (nMDS) and clustering contributed
to highlight the importance of the reproductive strategy on the contemporary observed
distribution patterns. e importance of environmental parameters such as inuence of
Antarctic Circumpolar Current (ACC), the inuence of the Polar Front (PF), the pres-
Camille Moreau et al. / ZooKeys 747: 141–156 (2018)
144
ence of gyres or the geographic distance among locations has also been emphasised. is
dataset helped to better describe the dierent biogeographic patterns within asteroids,
which are overall congruent with other taxa and diers according to species reproduc-
tive strategy. is suggests a dierential inuence of dispersal capabilities on species
distribution patterns. Analyses at genus levels also revealed the underlying legacy of past
oceanographic and geodynamic processes in present-day patterns such as the existence
of a trans-Antarctic pathway that split the Antarctic continent into two entities in the
past. e detailed results are available from Moreau et al. (2017).
Data description: Asteroids are common invertebrates of Antarctic benthic com-
munities considering the relative high species richness of the group in the region with
regards to the world total diversity (Danis et al. 2014). ey play a signicant ecological
role in Antarctic ecosystems, including in trophic networks (most species being preda-
tors) (Dayton 1972; Lawrence 2013). e present dataset, that focuses on regions located
at latitudes higher than 45°S, compiles 28 families out of the 39 known worldwide (Mah
2017) with 13,840 occurrences gathered from various sources. e time coverage of the
collection starts in 1872 with the HMS Challenger expedition and ends in 2016 with
sampled collected during the RRS James Clark Ross JR15005 SO-AntEco cruise.
Associated to occurrence data, depth, relative position to the PF, taxonomic infor-
mation and bioregion were implemented when available. Depth data were extracted
from www.gebco.net. Information regarding the reproductive strategy (brooding or
broadcasting) of 63 species out of the 299 described was included in the database. Cor-
responding bioregions of the observed occurrences were specied following Moreau
et al. 2017. A signicant part of the specimens is deposited in various institutions:
e.g., National Museum of Natural History (NMNH), Museum national d’Histoire na-
turelle (MNHN), Museo Nazionale dell’Antartide (MNA), Université Libre de Brux-
elles (ULB), Museo Argentino de Ciencias Naturales (MACN), National Institute of
Water and Atmospheric Research (NIWA).
Quality control description: Data are available at species level. Nomenclature was
thoroughly checked using the Taxon Match Tool implemented in the World Register
of Marine Species (WoRMS Editorial Board 2016), to delete all potential discrepancies
and update the taxonomy determination. All replicates originating from overlapping
origins as well as errors regarding the georeferencing, species synonymy, or misspelling
were removed. Most of the occurrences additions originating from recent campaigns
were identied by Christopher Mah and Camille Moreau.
Taxonomic coverage
General taxonomic coverage description
e present dataset is the most exhaustive and up-to-date list of available occurrences
for the class Asteroidea (Echinodermata), in the entire Southern Ocean. is collection
Antarctic and Sub-Antarctic Asteroidea database 145
Figure 1. Map of the 13,840 asteroid species occurrences available in the present database, within the
boundaries of the Southern Ocean (45°S). Projection: South Pole Stereographic.
provides information about the occurrence of 28 asteroid families, 118 genera, and
299 species. Occurrence distribution is illustrated on Figure 1.
Species richness in the dierent regions of the SO was estimated based on 1° × 1°
grid cell resolution (Figure 2A). Maximum richness (55 species per cell) was found
along the Western Antarctic Peninsula. High richness values were also reported in
the Weddell Sea as well as in Sub-Antarctic Islands (Kerguelen, Crozet, Marion, and
South Georgia Islands). Richness distribution needs to be interpreted carefully con-
sidering the patchy and uneven sampling eort of past oceanographic cruises carried
out in the SO (Figure 2B). Indeed, considerable parts of the SO present a crucial lack
of sampling. In the context of this study, richness values and sampling eort present
a signicant positive correlation in space (Pearson r = 0.52, p < 0.001) indicating the
need to extend the development of this unique synthesis work and to strengthen the
eort for other taxonomic groups.
Camille Moreau et al. / ZooKeys 747: 141–156 (2018)
146
Phylum: Echinodermata
Class: Asteroidea
Order: Brisingida, Forcipulatida, Notomyotida, Paxillosida, Spinulosida, Valvatida,
Velatida
Family: Acanthasteridae, Asteriidae, Asterinidae, Astropectinidae, Benthopectini-
dae, Brisingidae, Ctenodiscidae, Echinasteridae, Freyellidae, Ganeriidae, Gonias-
teridae, Heliasteridae, Korethrasteridae, Leilasteridae, Luidiidae, Myxasteridae,
Odontasteridae, Ophidiasteridae, Paulasteriidae, Pedicellasteridae, Poraniidae,
Porcellanasteridae, Pseudarchasteridae, Pterasteridae, Radiasteridae, Solasteridae,
Stichasteridae, Zoroasteridae.
Genus: Abyssaster, Acanthaster, Acodontaster, Adelasterias, Allostichaster, Anasterias,
Anseropoda, Anteliaster, Anthenoides, Asterina, Asthenactis, Astromesites, Astropecten,
Astrostole, Bathybiaster, Belgicella, Benthopecten, Brisinga, Brisingenes, Caimanaster,
Calyptraster, Ceramaster, Cheiraster, Chitonaster, Chondraster, Cladaster, Clavapora-
nia, Coscinasterias, Cosmasterias, Crossaster, Cryptasterias, Ctenodiscus, Cuenotaster,
Cycethra, Diplasterias, Diplodontias, Diplopteraster, Dipsacaster, Dytaster, Echin-
aster, Eratosaster, Eremicaster, Freyastera, Freyella, Freyellaster, Fromia, Ganeria,
Gaussaster, Gilbertaster, Glabraster, Granaster, Henricia, Hippasteria, Hymenaster,
Hymenodiscus, Hyphalaster, Kampylaster, Kenrickaster, Labidiaster, Leptychaster, Le-
thasterias, Lithosoma, Lonchotaster, Lophaster, Luidia, Lysasterias, Macroptychaster,
Mediaster, Meridiastra, Mimastrella, Mirastrella, Myxoderma, Neosmilaster, Notas-
terias, Notioceramus, Novodinia, Odinella, Odontaster, Odontohenricia, Ophidias-
Figure 2. A Species richness in the Southern Ocean. e number of asteroid species present in 1° × 1°
grid cells are reported using yellow-red colour chart B Sampling eort in the Southern Ocean for the class
Asteroidea. e number of sampling station per 1° × 1° grid cell is reported using yellow-red colour chart.
Projection: South Pole Stereographic.
Antarctic and Sub-Antarctic Asteroidea database 147
ter, Paralophaster, Paranepanthia, Patiriella, Paulasterias, Pectinaster, Pedicellaster,
Pentagonaster, Pergamaster, Peribolaster, Perissasterias, Perknaster, Persephonaster,
Pillsburiaster, Plutonaster, Poraniopsis, Porcellanaster, Proserpinaster, Psalidaster,
Pseudarchaster, Pseudechinaster, Psilaster, Pteraster, Radiaster, Remaster, Rhopiella,
Saliasterias, Sclerasterias, Scotiaster, Smilasterias, Solaster, Sphaeriodiscus, Stichaster,
Styracaster, Taranuiaster, Tarsaster, Tremaster, Vemaster, Zoroaster.
Species: Abyssaster diadematus, Abyssaster planus, Acanthaster planci, Acodontaster capi-
tatus, Acodontaster conspicuus, Acodontaster elongatus, Acodontaster hodgsoni, Aco-
dontaster marginatus, Adelasterias papillosa, Allostichaster capensis, Allostichaster far-
quhari, Allostichaster insignis, Allostichaster polyplax, Anasterias antarctica, Anasterias
asterinoides, Anasterias directa, Anasterias laevigata, Anasterias mawsoni, Anasterias
pedicellaris, Anasterias perrieri, Anasterias rupicola, Anasterias sphoerulata, Anaste-
rias spirabilis, Anasterias studeri, Anasterias suteri, Anseropoda antarctica, Anteliaster
australis, Anteliaster scaber, Anthenoides cristatus, Asterina mbriata, Asthenactis aus-
tralis, Astromesites primigenius, Astropecten brasiliensis, Astrostole scabra, Bathybiaster
loripes, Belgicella racowitzana, Benthopecten munidae, Benthopecten pedicifer, Benth-
opecten pikei, Brisinga chathamica, Brisingenes multicostata, Caimanaster acutus, Ca-
lyptraster tenuissimus, Calyptraster vitreus, Ceramaster australis, Ceramaster grenaden-
sis, Ceramaster patagonicus, Cheiraster (Cheiraster) otagoensis, Cheiraster (Luidiaster)
antarcticus, Cheiraster (Luidiaster) gerlachei, Cheiraster (Luidiaster) hirsutus, Cheir-
aster (Luidiaster) planeta, Chitonaster cataphractus, Chitonaster felli, Chitonaster jo-
hannae, Chitonaster trangae, Chondraster elattosis, Cladaster analogus, Clavaporania
tchorum, Coscinasterias calamaria, Coscinasterias muricata, Cosmasterias dyscrita,
Cosmasterias lurida, Crossaster campbellicus, Crossaster multispinus, Crossaster peni-
cillatus, Cryptasterias brachiata, Cryptasterias turqueti, Ctenodiscus australis, Cteno-
discus procurator, Cuenotaster involutus, Cycethra frigida, Cycethra macquariensis,
Cycethra verrucosa, Diplasterias brandti, Diplasterias brucei, Diplasterias kerguelen-
ensis, Diplasterias meridionalis, Diplasterias octoradiata, Diplasterias radiata, Dip-
lodontias dilatatus, Diplodontias robustus, Diplodontias singularis, Diplopteraster
clarki, Diplopteraster hurleyi, Diplopteraster otagoensis, Diplopteraster peregrinator,
Diplopteraster semireticulatus, Diplopteraster verrucosus, Dipsacaster magnicus,
Dytaster felix, Echinaster farquhari, Echinaster smithi, Eratosaster jenae, Eremicaster
crassus, Eremicaster pacicus, Eremicaster vicinus, Freyastera benthophila, Freyastera
tuberculata, Freyella attenuata, Freyella drygalskii, Freyella echinata, Freyella formosa,
Freyella fragilissima, Freyella giardi, Freyella heroina, Freyella mutabilia, Freyellaster
polycnema, Fromia monilis, Ganeria attenuata, Ganeria falklandica, Ganeria hahni,
Gaussaster antarcticus, Gilbertaster anacanthus, Glabraster antarctica, Granaster nu-
trix, Henricia aucklandiae, Henricia compacta, Henricia didens, Henricia sheri,
Henricia lukinsii, Henricia obesa, Henricia ornata, Henricia pagenstecheri, Henricia
parva, Henricia praestans, Henricia ralphae, Henricia simplex, Henricia smilax, Hen-
ricia spinulfera, Henricia studeri, Hippasteria falklandica, Hippasteria phrygiana,
Hymenaster caelatus, Hymenaster campanulatus, Hymenaster carnosus, Hymenaster
coccinatus, Hymenaster crucifer, Hymenaster densus, Hymenaster edax, Hymenaster
Camille Moreau et al. / ZooKeys 747: 141–156 (2018)
148
estcourti, Hymenaster formosus, Hymenaster fucatus, Hymenaster graniferus, Hyme-
naster latebrosus, Hymenaster nobilis, Hymenaster pellucidus, Hymenaster perspicuus,
Hymenaster praecoquis, Hymenaster pullatus, Hymenaster sacculatus, Hymenodiscus
aotearoa, Hymenodiscus distincta, Hymenodiscus submembranacea, Hyphalaster gi-
ganteus, Hyphalaster inermis, Hyphalaster scotiae, Kampylaster incurvatus, Kenrick-
aster pedicellaris, Labidiaster annulatus, Labidiaster radiosus, Leptychaster exuo-
sus, Leptychaster kerguelenensis, Leptychaster magnicus, Leptychaster melchiorensis,
Lethasterias australis, Lithosoma novaezelandiae, Lonchotaster tartareus, Lophaster
densus, Lophaster gaini, Lophaster stellans, Lophaster tenuis, Luidia clathrata, Luidia
porteri, Lysasterias adeliae, Lysasterias belgicae, Lysasterias chirophora, Lysasterias digi-
tata, Lysasterias hemiora, Lysasterias heteractis, Lysasterias jorei, Lysasterias lactea,
Lysasterias perrieri, Macroptychaster accrescens, Mediaster arcuatus, Mediaster dawso-
ni, Mediaster pedicellaris, Mediaster sladeni, Meridiastra medius, Meridiastra oriens,
Mimastrella cognata, Mirastrella biradialis, Myxoderma qawashqari, Neosmilaster
georgianus, Neosmilaster steineni, Notasterias armata, Notasterias bongraini, Notas-
terias candicans, Notasterias haswelli, Notasterias pedicellaris, Notasterias stolophora,
Notioceramus anomalus, Novodinia novaezelandiae, Odinella nutrix, Odontaster
aucklandensis, Odontaster benhami, Odontaster meridionalis, Odontaster pearsei,
Odontaster penicillatus, Odontaster pusillus, Odontaster roseus, Odontaster validus,
Odontohenricia anarea, Odontohenricia endeavouri, Ophidiaster confertus, Paralo-
phaster antarcticus, Paralophaster godfroyi, Paralophaster hyalinus, Paralophaster lo-
rioli, Paranepanthia aucklandensis, Patiriella regularis, Paulasterias tyleri, Pectinaster
lholi, Pectinaster mimicus, Pedicellaster hypernotius, Pentagonaster pulchellus, Per-
gamaster incertus, Pergamaster triseriatus, Peribolaster folliculatus, Peribolaster lictor,
Peribolaster macleani, Perissasterias monacantha, Perknaster antarcticus, Perknaster
aurantiacus, Perknaster aurorae, Perknaster charcoti, Perknaster densus, Perknaster
fuscus, Perknaster sladeni, Persephonaster facetus, Pillsburiaster aoteanus, Pillsburias-
ter indutilis, Plutonaster complexus, Plutonaster fragilis, Plutonaster hikurangi, Plu-
tonaster jonathani, Plutonaster knoxi, Plutonaster sirius, Poraniopsis echinaster, Por-
cellanaster ceruleus, Proserpinaster neozelanicus, Psalidaster sheri, Psalidaster mor-
dax, Pseudarchaster discus, Pseudarchaster garricki, Pseudechinaster rubens, Psilaster
acuminatus, Psilaster charcoti, Pteraster anis, Pteraster bathami, Pteraster orifer,
Pteraster gibber, Pteraster hirsutus, Pteraster koehleri, Pteraster robertsoni, Pteraster
rugatus, Pteraster spinosissimus, Pteraster stellifer, Radiaster gracilis, Remaster gourdo-
ni, Rhopiella hirsuta, Saliasterias brachiata, Sclerasterias eustyla, Sclerasterias mollis,
Scotiaster inornatus, Smilasterias clarkailsa, Smilasterias irregularis, Smilasterias scal-
prifera, Smilasterias triremis, Solaster longoi, Solaster notophrynus, Solaster regularis,
Solaster torulatus, Sphaeriodiscus mirabilis, Stichaster australis, Styracaster armatus,
Styracaster chuni, Styracaster horridus, Styracaster robustus, Taranuiaster novaezea-
landiae, Tarsaster stoichodes, Tremaster mirabilis, Vemaster sudatlanticus, Zoroaster
actinocles, Zoroaster alternicanthus, Zoroaster fulgens, Zoroaster macracantha, Zoro-
aster spinulosus, Zoroaster tenuis.
Antarctic and Sub-Antarctic Asteroidea database 149
Spatial coverage: Southern Ocean: from 45°S to higher latitudes
Temporal coverage: 1872: HMS Challenger to 2016: JR15005.
Dataset: Asteroid occurrences available in the Southern Ocean from 1872 to 2016,
collected during dierent campaigns and gathered from dierent deposit resources.
Object name: Antarctic and Sub-Antarctic Asteroidea Database
Character encoding: UTF/8
Format name: Darwin Core Archive Format
Format version: 1.4
Distribution: http://ipt.biodiversity.aq/resource?r=asteroidea_southern_ocean
Publication date of data:
Language: English
Metadata language: English
Date of metadata creation:
Hierarchy level: Dataset
Acknowledgements
is work was supported by a “Fonds pour la formation à la Recherche dans l’Industrie
et l’Agriculture” (FRIA) grants to C. Moreau. C. Mah was funded by MNHN invited
researcher grants (2013, 2014, 2015, 2016). is is contribution no. 16 to the vERSO
project (www.versoproject.be), funded by the Belgian Science Policy Oce (BELSPO,
contract n°BR/132/A1/vERSO). is is contribution to the IPEV programs n°1124 RE-
VOLTA and n°1044 PROTEKER and to team SAMBA of the Biogeosciences labora-
tory. We are grateful to the crew and participants of all the cruises and research programs
involved in the capture of the samples included in this dataset: POKER 2, REVOLTA
1 & 2, CEAMARC, JR144, JR179, JR230, JR262, JR275, JR287, JR15005. We also
thank the following institutions: California Academy of Sciences, Alfred Wegener Insti-
tute, Helmholtz Centre for Polar and Marine Research, Shallow Marine Surveys Group,
University of Lodz, Muséum national d’Histoire naturelle and University of Genoa,
NIWA (National Institute of Water and Atmospheric Research) Invertebrate Collection.
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... All seven orders of the class Asteroidea and 75% of the known extant families are found in the SO, with none of the families found to be endemic (Moreau et al., 2015(Moreau et al., , 2018. Such a broad taxonomic richness among an entire class is not typical in SO benthic invertebrates, where long-term biogeographic isolation and extreme environmental conditions have conditioned taxon specialisation, especially at high taxonomic levels (i.e. ...
... We used a combination of global scale and SO-centred studies to explore sea star richness across spatial and taxonomic scales (Mah & Blake, 2012, Moreau et al., 2018. The Antarctic and sub-Antarctic Asteroidea database assembled by Moreau et al. (2018) was used to describe biogeographic patterns and latitudinal gradients in taxonomic richness with regards to sampling effort. ...
... We used a combination of global scale and SO-centred studies to explore sea star richness across spatial and taxonomic scales (Mah & Blake, 2012, Moreau et al., 2018. The Antarctic and sub-Antarctic Asteroidea database assembled by Moreau et al. (2018) was used to describe biogeographic patterns and latitudinal gradients in taxonomic richness with regards to sampling effort. Quantification of sampling effort, species and genus richness as well as the species:genus ratio, were calculated at a 1 • latitude band resolution (from − 45 • to − 79 • ) based on taxon names of the World Register of Marine Species (WoRMS, 2020). ...
Article
Benthic life in the Southern Ocean (SO) features unique life history traits and species assemblages, but the origin and evolution of many of these taxonomic groups is still unclear. Sea stars (Asteroidea) are a diversified and abundant component of benthic ecosystems in the SO, in which they can play key ecological roles. Former studies suggest that the diversity of the entire class is still poorly known and underestimated, hampering the assessment of the origin and evolution of the class in the SO. In the present study, we analyse spatial patterns of SO sea star diversity using an occurrence database of ~14,000 entries. The biogeographic analysis is coupled with the exploration of an extensive molecular phylogeny based on over 4,400 specimen sequences to inform, support and/or question the observed diversity patterns. We show that the current taxonomy of SO asteroids needs revision and that their diversity has generally been overlooked and misinterpreted. Molecular results highlight the recent diversification of most studied taxa, at genus and species levels, which supports an evolutionary scenario referring to successive invasion and exchange events between the SO and adjacent regions, and clade diversification during periods of rapid environmental changes driven by the succession of glacial cycles. Our work advocates for employing, and endorsing the use of extensive genetic barcode libraries for biodiversity studies.
... In the present work, we test the robustness of SDMs generated with BRT for various numbers of environmental descriptors and different collinearity values. Models are generated for six common and abundant asteroid (sea star) species that have been extensively sampled and studied; here used as representative case studies for the Antarctic benthos: Acodontaster hodgsoni (Bell 1908), Bathybiaster loripes (Sladen 1889), Glabraster antarctica (Smith 1876), Labidiaster annulatus (Sladen 1889), Odontaster validus (Koehler 1906) and Psilaster charcoti (Koehler 1906) (McClintock et al. 2008Mah and Blake 2012;Lawrence 2013;Brandt et al. 2014;Danis et al. 2014;Moles et al. 2015;Moreau et al. 2018). ...
... Because the Southern Ocean is scarcely accessed and sampled, spatial analyses of species distribution are usually based on aggregated and relatively small presence-only datasets, often compiled from historical records Guillaumot et al. 2016Guillaumot et al. , 2018aFabri-Ruiz et al. 2017;Moreau et al. 2018), which strongly hampers SDM performances (Hortal et al. 2008;Loiselle et al. 2008;Phillips et al. 2009;Costa et al. 2010;Newbold 2010;Guillera-Arroita et al. 2015;Guillaumot et al. 2018a). The objectives of this study are to assess the limits and potential of BRT to generate robust models for Southern Ocean benthic species and to provide some recommendations on the selection of environmental descriptors. ...
... feeding diets, reproduction and development modes) that condition habitat preferences and dispersal abilities (Moreau et al. 2017 , Table 1). Here, SDMs are generated for six sea star species using presence-only records obtained from the "Antarctic and sub-Antarctic asteroid database" published by Moreau et al. (2018): Acodontaster hodgsoni (Bell 1908), Bathybiaster loripes (Sladen 1889), Glabraster antarctica (Smith 1876), Labidiaster annulatus Sladen 1889, Odontaster validus Koehler 1906and Psilaster charcoti (Koehler 1906. The studied species are abundant and have been regularly sampled during benthic expeditions to the Southern Ocean, making them some of the best-documented occurrence records on database available for Southern Ocean benthic species (Moreau et al. 2018). ...
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Species distribution models (SDMs) are increasingly used in ecological and biogeographic studies by Antarctic biologists, including for conservation and management purposes. During the modelling process, model calibration is a critical step to ensure model reliability and robustness, especially in the case of SDMs, for which the number of selected environmental descriptors and their collinearity is a recurring issue. Boosted regression trees (BRT) was previously considered as one of the best modelling approach to correct for this type of bias. In the present study, we test the performance of BRT in modelling the distribution of Southern Ocean species using different numbers of environmental descriptors, either collinear or not. Models are generated for six sea star species with contrasting ecological niches and wide distribution ranges over the entire Southern Ocean. For the six studied species, overall modelling performance is not affected by the number of environmental descriptors used to generate models, BRT using the most informative descriptors and minimizing model overfitting. However, removing collinear descriptors also helps reduce model overfitting. Our results confirm that BRTs may perform well and are relevant to deal with complex and redundant environmental information for Antarctic biodiversity distribution studies. Selecting a limited number of non-collinear descriptors before modelling may generate simpler models and facilitate their interpretation. The modelled distributions do not differ noticeably between the different species despite contrasting species ecological niches. This unexpected result stresses important limitations in using SDMs for broad scale spatial studies, based on limited, spatially aggregated data, and low-resolution descriptors.
... In the Southern Ocean (SO), asteroids are well represented, accounting for 15% to 16% of the total number of species reported there to date [1,10,11]. Current diversity estimates for this class south of 45 • S count 28 asteroid families, 118 genera, and 299 species [12]. As with other invertebrates thriving in polar environments, Antarctic sea stars have developed specific adaptations (e.g., slow development [13,14]) and reproductive strategies (brooders vs. broadcasters [12,15]) that affect distribution patterns and the biogeography of this class in the SO [16]. ...
... Current diversity estimates for this class south of 45 • S count 28 asteroid families, 118 genera, and 299 species [12]. As with other invertebrates thriving in polar environments, Antarctic sea stars have developed specific adaptations (e.g., slow development [13,14]) and reproductive strategies (brooders vs. broadcasters [12,15]) that affect distribution patterns and the biogeography of this class in the SO [16]. ...
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The Southern Ocean is one of the most exposed regions to climate-related changes on our planet. Better understanding of the current biodiversity and past speciation events, as well as implementation of conservation actions and accurate identification of organisms to species level in this unique environment, is fundamental. In this study, two species of sea stars, Odontaster roseus Janosik & Halanych, 2010 and Odontaster pearsei Janosik & Halanych, 2010, are reported for the first time from the Terra Nova Bay area (TNB, Ross Sea, Antarctica) by using a combination of molecular (DNA barcoding) and morphological (coloration and skeletal features) analyses. Molecular results agree with external morphological characters of the two identified species, making occurrence in the area unequivocal. The two species were recently described from the Antarctic Peninsula, and went unnoticed for a long time in TNB, possibly having been confused with O. meridionalis (E.A. Smith, 1876), with which they share a bright yellow coloration. This latter species seems to be absent in the Ross Sea. Thus, the past literature referring to O. meridionalis in the Ross Sea should be treated with caution as these “yellow morphs” could be one of the two recently described species or even orange–yellow morphs of the red-colored congeneric O. validus Koehler, 1906. This work highlights the paucity of knowledge even in purportedly well-studied areas and in iconic Antarctic organisms.
... Recording current biodiversity in the region is becoming increasingly urgent with the drastic decline in summer sea ice in the Weddell Sea over the last 5 years likely to have major implications for the marine ecosystem (Turner et al. 2020). Echinoids from JR275 were reported by Saucède et al. (2015) and the Asteroidea are included by Moreau et al. (2018). ...
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Thirty-seven holothuroid species, including six potentially new, are reported from the eastern Weddell Sea in Antarctica. Information regarding sea cucumbers in this dataset is based on Agassiz Trawl (AGT) samples collected during the British Antarctic Survey cruise JR275 on the RRS James Clark Ross in the austral summer of 2012. Species presence by site and an appendix of holothuroid identifications with registrations are included as supplementary material. Species occurrence in the Weddell Sea is updated to include new holothuroids from this expedition.
... This long-lasting and irregular effort in biogeographical (occurrence) data collection has had an impact on data compilation and has resulted in heterogeneous datasets, as observed in several data papers and associated Integrated Publishing Toolkit (IPT) databases such as Guillaumot et al. (2016), Fabri-Ruiz et al. (2017) or Moreau et al. (2018), or in the general platform biodiversity.aq web portal. ...
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Species distribution modelling studies the relationship between species occurrence records and their environmental setting, providing a valuable approach to predicting species distribution in the Southern Ocean (SO), a challenging region to investigate due to its remoteness and extreme weather and sea conditions. The specificity of SO studies, including restricted field access and sampling, the paucity of observations and difficulties in conducting biological experiments, limit the performance of species distribution models. In this review, we discuss some issues that may influence model performance when preparing datasets and calibrating models, namely the selection and quality of environmental descriptors, the spatial and temporal biases that may affect the quality of occurrence data, the choice of modelling algorithms and the spatial scale and limits of the projection area. We stress the importance of evaluating and communicating model uncertainties, and the most common evaluation metrics are reviewed and discussed accordingly. Based on a selection of case studies on SO benthic invertebrates, we highlight important cautions to take and pitfalls to avoid when modelling the distribution of SO species, and we provide some guidelines along with potential methods and original solutions that can be used for improving model performance.
... The biology, ecology and distribution of these species have been extensively studied and are relatively well documented (McClintock et al. 2008, Mah and Blake 2012, Lawrence 2013. Presence-only records were compiled from a recently updated database, thoroughly scrutinised with the World Register of Marine Species (WoRMS Editorial Board 2016), to delete potential discrepancies, update taxonomy and correct for georeferencing errors (Moreau et al. 2018). ...
Article
Species distribution modelling (SDM) has been increasingly applied to Southern Ocean case studies over the past decades, to map the distribution of species and highlight environmental settings driving species distribution. Predictive models have been commonly used for conservation purposes and supporting the delineation of marine protected areas, but model predictions are rarely associated with extrapolation uncertainty maps. In this study, we used the Multivariate Environmental Similarity Surface (MESS) index to quantify model uncertainty associated to extrapolation. Considering the reference dataset of environmental conditions for which species presence-only records are modelled, extrapolation corresponds to the part of the projection area for which one environmental value at least falls outside of the reference dataset. Six abundant and common sea star species of marine benthic communities of the Southern Ocean were used as case studies. Results show that up to 78% of the projection area is extrapolation, i.e. beyond conditions used for model calibration. Restricting the projection space by the known species ecological requirements (e.g. maximal depth, upper temperature tolerance) and increasing the size of presence datasets were proved efficient to reduce the proportion of extrapolation areas. We estimate that multiplying sampling effort by 2 or 3-fold should help reduce the proportion of extrapolation areas down to 10% in the six studied species. Considering the unexpectedly high levels of extrapolation uncertainty measured in SDM predictions, we strongly recommend that studies report information related to the level of extrapolation. Waiting for improved datasets, adapting modelling methods and providing such uncertainy information in distribution modelling studies are a necessity to accurately interpret model outputs and their reliability.
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Assessment of Antarctic taxonomic diversity for asteroids and other taxa for poorly studied or unknown regions, such as the deep-sea, will be important for our understanding of these understudied habitats. Eleven new species and a new genus are described from three families (Asterinidae, Goniasteridae, Solasteridae) within the Valvatida, nearly all of which were collected from deep-sea settings below 1000 m by the US Antarctic Research Program in the 1960s. A new subfamily, the Kampylasterinae subfam. nov. is designated for Kampylaster and Astrotholus nov. gen. which were supported as sister taxa on a monophyletic clade within the Asterinidae. Astrotholus nov. gen. is described to accommodate “Anseropoda” antarctica and four new bathyal and abyssal species, which are a significant morphological divergence from the typological definition of Anseropoda. New species of the goniasterid Notioceramus and the solasterid Paralophaster are also described from bathyal depths (2000–3000 m). Paralophaster ferax n. sp. is among the deepest asteroids known to brood, is the first brooding species within Paralophaster and the second species in the Solasteridae known to brood. Following examination of the type and molecular data, Lophaster densus is found to be included within Paralophaster. A review of Antarctic Lophaster species shows additional specimens of Lophaster abbreviatus which support it as a distinct species from Lophaster stellans. New occurrence data for bathyal Antarctic Asteroidea as well as unusual-gut content observations of shallower-water species are also included.
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The Southern Ocean is widely recognized for its unique benthic ecosystems, but benthic sampling has been largely restricted to shallower continental zones and much remains to be learned about biodiversity in the bathyal and abyssal zones. In this study, we collected and investigated the deep-sea benthic habitat using geological dredges, a multiple corer, and a bait trap on-board the R/V Hakuho Maru in bathyal to abyssal depths between the latitude of 39°38.16′S–66°36.03′S and the longitude of 62°19.55′W–67°37.95′E in the Southern Ocean and the surrounding subantarctic region, focusing on West Antarctica. We carried out 20 geological dredges, 14 multiple corers, and a bait trap survey. Here, we present the taxonomic and distributional description of 180 species of Annelida, Mollusca, Ostracoda, Decapoda, and Echinodermata identified from our samples, including species-level identifications where possible and detailed occurrence information. Although West Antarctica is the most highly investigated area for benthic biodiversity around Antarctica, our collection includes the annelid Flabelligena hakuhoae Jimi et al. 2020 which was new to science at the time of collection, and other potentially undescribed species of Annelida, Ostracoda, Asteroidea, and Holothuroidea. Several specimens collected updated the distribution ranges of their species.
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In order to contribute to the baseline of knowledge that is being built of the Gerlache Strait and the adjacent areas, the echinoderms collected during the Scientific Expeditions from Colombia to Antarctica carried out between 2016 and 2019 as part of the project “Biodiversity and oceanographic conditions of the Gerlache Strait, Biogerlache-Antártica” are presented. Eleven stations between 54 and 523 m deep were sampled, using sediment dredgers that captured incidentally some individuals from the mega and macro-epifauna, which were separated, reviewed, and identified. Twentynine (29) individuals were obtained in five of the sampled stations, belonging to 13 morphotypes. Ophiuroidea was the richest class (five morphotypes), followed by Holothuroidea (four), Asteroidea (two), and Crinoidea (two). Morphological and distribution comments are presented, as well as general and detailed images of each morphotype. Among the contributions to the inventory of echinoderms in the area, it is highlighted the sea cucumber genus Taeniogyrus Semper, 1867 that is registered for the first time for the Antarctic peninsula and the crinoid species Anthometrina adriani (Bell, 1908) that extends its geographical distribution, confined to the high-Antarctic shelf, up to the Gerlache Strait ( 64° 39 ‘S).
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We summarize and evaluate explanations that have been proposed to account for the unusually high number of benthic marine invertebrate species in the Southern Ocean with nonpelagic development. These explanations are divided between those involving adaptation to current conditions in this cold-water environment, selecting for nonpelagic larval development, and those involving vicariant events that either exterminated a high proportion of species with pelagic development (the extinction hypothesis) or enhanced speciation in taxa that already had nonpelagic development. In the latter case, glacial maxima over the Antarctic Continental Shelf in the Pliocene/Pleistocene gla-cial cycles could have created refuges where speciation occurred (the ACS hypothesis), or the powerful Antarctic Circumpolar Current passing through Drake Passage for over 30 million years could have transported species with nonpelagic development to new habitats to create new species (the ACC hypothesis). We examine the distribution and phylogenetic history of echinoderms and crustaceans in the Southern Ocean to evaluate these different explanations. We could fi nd little or no evidence that nonpelagic development is a direct adaptation to conditions in the Southern Ocean. Some evidence supports the three vicariant hypotheses, with the ACC hypothesis perhaps the best predictor of observed patterns, both the unusual number of species with nonpelagic development and the notably high biodiversity found in the Southern Ocean.
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Background: The Register of Antarctic Marine Species (RAMS, De Broyer et al. 2015) is the regional component of the World Register of Marine Species (WoRMS Editorial Board 2015) in the Southern Ocean. It has been operating for the last ten years, with a special effort devoted towards its completion after the International Polar Year (IPY) in 2007-2008, in the framework of the Census of Antarctic Marine Life (CAML, 2005 - 2010). Its objective is to offer free and open access to a complete register of all known species living in the Southern Ocean, building a workbench of the present taxonomic knowledge for that region. The Antarctic zone defined by this dynamic and community-based tool has been investigated with a particular interest. The Sub-Antarctic zone was a secondary objective during the establishment of the RAMS and is still lacking the impulse of the scientific community for some taxa. New information: In the present study, more than 13,000 occurrences records of Asteroidea (Echinodermata) have been compiled within the RAMS area of interest and checked against the RAMS species list of sea stars, using WoRMS Taxon Match tool. Few mismatches (basionym mistakes : i.e. original name misspelled or incorrect) were found within the existing list and 97 unregistered species are actually occurring within the RAMS boundaries. After this update, the number of Asteroidea species was increased by around 50%, now reaching 295 accepted species.
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-Aim- To describe and analyse asteroid biogeographic patterns in the Southern Ocean (SO) and test whether reproductive strategy (brooder versus broadcaster) can explain distribution patterns at the scale of the entire class. We hypothesize that brooding and broadcasting species display different biogeographic patterns. -Location- Southern Ocean, south of 45 °S. -Methods- Over 14,000 asteroid occurrences are analysed using bootstrapped spanning network (BSN), non-metrical multidimensional scaling (nMDS) and clustering to uncover the spatial structure of faunal similarities among 25 bioregions. -Results- Main biogeographic patterns are congruent with previous works based on other taxa and highlight the isolation of New Zealand, the high richness in the Scotia Arc area particularly of brooding species, an East/West Antarctic differentiation, and the faunal affinities between South America and sub-Antarctic Islands. Asteroids show lower endemism levels than previously reported with 29% of species occurring in Antarctica only. In particular, asteroids from Tierra del Fuego showed affinities with those of West Antarctica at the species level, suggesting a recent mixing of assemblages. Biogeographic patterns are highly linked to reproductive strategy. Patterns also differ according to the taxonomic level, revealing the underlying role of historical factors. -Main conclusions- Patterns of sea star biogeography are consistent with results obtained for other marine groups and are strongly linked to reproductive strategy.
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Temperature affects biological functions by altering reaction rates. Physiological rates usually double to treble for every 10°C rise, and 1-4 fold encompasses normal biological functions. However, in polar marine species inhabiting temperatures around 0°C many processes are slowed beyond the Arrhenius relationships for warmer water species. Growth, embryonic development, Specific dynamic action (SDA) duration, and time to acclimate to altered temperature, are all 5-12 fold slower in species living near 0°C than at 10°C. This cold marine physiological transition to slower states is absent, however, in oxygen consumption and SDA factorial scope; processes where capacity is related to aerobic scope. My opinion is that processes involving significant protein modification are impacted, and protein synthesis or folding problems cause the slowing of rates beyond expected temperature effects.
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Among the most fascinating animals in the world's oceans are the more than 2,000 species of starfish. Called "Asteroids" by scientists who study them (after their taxonomic name, Asteroidea)-or sea stars in some parts of the world-starfish are easily recognized because of their star-like form. Starfish is a comprehensive volume devoted to the integrative and comparative biology and ecology of starfish. Written by the world's leading experts on starfish, the integrative section covers topics such as reproduction, developmental biology and ecology, larval ecology, and the ecological role of starfish as a group. The comparative section considers the biology and ecology of important species such as Acanthaster planci, Heliaster helianthoides, Asterias amurensis, and Pisaster ochraceus. Replete with detailed, scientifically accurate illustrations and the latest research findings, Starfish examines the important role of these invertebrates in the marine environment, a topic of great interest because of their impact on the food web. As major predators that are able to evert their stomach and wrap it around their prey, starfish can have a significant impact on commercial fisheries. Starfish are of interest not only to echinoderm specialists but also to marine biologists and invertebrate zoologists in general and, increasingly, to the medical community. A starfish's ability to regenerate body parts is almost unequalled in the animal world, making them ideal models for basic science studies on the topic. Contributors: Charles D. Amsler, Bill J. Baker, Mario Barahona, Michael F. Barker, Maria Byrne, Juan Carlos Castilla, Katharina Fabricius, Patrick Flammang, Andrew S. Gale, Carlos F. Gaymer, Jean-François Hamel, Elise Hennebert, John H. Himmelman, Michel Jangoux, John M. Lawrence, Tatiana Manzur, James B. McClintock, Bruce A. Menge, Annie Mercier, Anna Metaxas, Sergio A. Navarette, Timothy D. O'Hara, John S. Pearse, Carlos Robles, Eric Sanford, Robert E. Scheibling, Richard L. Turner, Carlos Renato R. Ventura, Kristina M. Wasson, Stephen A. Watts. © 2013 The Johns Hopkins University Press. All rights reserved.