Figs 27-33 - uploaded by Cinthya S G Santos
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Ceratonereis vittata Langerhans, 1884, Paraíba: 27, Região anterior, vista dorsal; 28, parapódio 6, vista posterior; 29, parapódio 20, vista posterior; 30, parapódio 35, vista posterior; 31, cerda falcígera homogonfa; 32, cerda falcígera heterogonfa; 33, cerda falcígera heterogonfa com tendão terminal. Escalas: 0,5 mm, figs. 27-30; 0,05 mm, figs. 31-33.
Source publication
Ten species belonging to the genera Ceratonereis Kinberg, 1866 and Nereis Linnaeus, 1758 were recorded in estuaries, exposed sandy beaches, shelly soft bottoms, atolls and coral reefs of the Brazilian northeastern coast. Two new species, Nereis serrata, from Ceará coast, and Nereis pseudomoniliformis, from Sergipe coast, are described.
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Citations
... The original description and Augener's redescription were very short, preventing further comparisons with N. riisei. Records of Nereis sp. by Nonato & Luna (1970) and of N. riisei by Santos & Lana (2003) might belong to N. lata if they are shown to be different from N. riisei. Hansen, 1882. ...
Nereis falsa de Quatrefages, 1866 has been regarded as a cosmopolitan species, and several species described from different localities have been regarded as junior synonyms of N. falsa. The present study is an attempt to resolve the taxonomic confusion in N. falsa, which seems to contain several distinct species due to previous inappropriate synonymy, widely distributed in the Atlantic and eastern Pacific Oceans. For this purpose, the authors first propose the resurrection of the synonymy of N. falsa with Hediste diversicolor that was concluded during the 19th century but disregarded later. After the fixation of the identity of N. falsa sensu stricto, the authors re-evaluate the proper taxonomic status of species which have previously been confused with N. falsa. Type, topotype and non-type specimens were examined; most species are redescribed, and others are reinstated. Nereis splendida Grube, 1840 is a valid Mediterranean species, and a neotype is proposed; it includes the Mediterranean populations of what is currently regarded as N. falsa. Consequently, N. falsa is transferred to Hediste Malmgren, 1867, and some taxonomic comments are added for the latter genus and a key to species is also included. Nereis callaona Grube & Kröyer in Grube, 1857, N. marginata Grube & Örsted in Grube, 1857 and N. riisei Grube & Örsted in Grube, 1857 are restricted to tropical American shores and are all redescribed. Nereis pelagica lunulata Ehlers, 1901, formerly regarded as a junior synonym of N. falsa by Fauvel (1941), is redescribed and elevated in rank to species level. Nereis lucipeta Ehlers, 1908, formerly regarded as a junior synonym of N. splendida by Ehlers (1913) and of N. falsa by Fauvel (1919), is reinstated. Nereis occidentalis Hartman, 1945 is also redescribed. Furthermore, N. ambigua Treadwell, 1937, formerly regarded as a junior synonym of N. riisei by Monro (1933), deserves to be reinstated. Western Africa specimens recorded as N. falsa are newly described as N. mezianei sp. nov.
... The specimen referred to as Ceratonereis vitatta by Santos and Lana (2003) from Paraiba, Brazil, is very similar to C. brasiliensis, although it differs from the Paraiba specimen by lacking paragnaths on area II. (Grube, 1840), restricted (Figure 3 ...
... This species has been recorded from several regions worldwide: the Mediterranean Sea, the Red Sea, South Africa, Madagascar, Andaman Sea, Singapore, Japan, China, Cuba, Brazil and so on (e.g. Day 1967;Imajima 1972;Hartman 1974;Rullier 1974;Wu et al. 1985;Tan and Chou 1993;Santos and Lana 2003). It is noteworthy that the publication date of N. (Ceratonereis) hircinicola was accepted as '1870' in numerous works (e.g. ...
... It is noteworthy that the publication date of N. (Ceratonereis) hircinicola was accepted as '1870' in numerous works (e.g. Hartman 1959a;Imajima 1972;Hartmann-Schröder 1985;Santos and Lana 2003;Sato 2020); however, the volume containing the paper with the description states 'Ausgegeben den 1. December 1869' (= 'Issued 1 December 1869') in the table of contents. Thus, the correct publication year is 1869. ...
Composetia Hartmann-Schröder, 1985 (Nereididae de Blainville, 1818), to which 51 species with broadly heterogeneous characteristics were previously assigned, is reviewed based upon the examination of the type material of the type species, C. costae (Grube, 1840), and seven other species. According to our designation of the lectotype of C. costae, a generic definition of Composetia is established, and taxonomic issues about C. costae are addressed. The current taxonomic status of several species similar to or previously synonymised with C. costae is re-evaluated. Based on the redefinition of Composetia, the taxonomic status of all species previously regarded as Composetia is reassessed. Consequently, three species are moved to two newly established genera based on their type material: Parasetia gen. nov., comprising the single species P. irritabilis (Webster, 1879) comb. nov.; and Potamonereis gen. nov., embracing P. kumensis (Sato, 2020) comb. nov. and P. tokashikiensis (Sato, 2020) comb. nov. Additionally, one species is redescribed and transferred to Leonnates, L. microcephala (Grube, 1878) comb. nov. Ten species currently remain in Composetia, and two of them, C. brasiliensis (McIntosh, 1885) and C. versipedata (Ehlers, 1887), are redescribed. Nereis articulata Ehlers, 1887, previously considered a member of Composetia, has a doubtful identity requiring further investigation. Although the generic placement of many of the remaining species is uncertain, we present our tentative re-evaluations for each of them. Keys are included for identifying all genera similar to Composetia, and for identifying all species within Composetia and Potamonereis gen. nov.
... The specimens of C. mirabilis recorded by Santos & Lana (2003) from Rocas Atoll, Brazil, match well with the current description. Ceratonereis mirabilis has been recorded several times from the Caribbean Sea (Dean 2012). ...
Currently, there are four recorded species of Ceratonereis Kinberg, 1865 in the Caribbean Sea; three of them are regarded as amphiamerican or widespread. This review intends to improve the current knowledge of these Ceratonereis species; descriptions and illustrations are presented based on type and additional material, including new records. After the examination of type material, the synonymy of Ceratonereis gracilis (Webster, 1884) with C. mirabilis Kinberg, 1865 is rejected, and C. gracilis is reinstated. Ceratonereis maya n. sp. is described based on records of C. excisa Grube Mller in Grube, 1873 and C. singularis Treadwell, 1929, and C. nancyae n. sp. is described based on records of C. mirabilis, from the Caribbean Sea. The examination of the type material of Nereis singularis Treadwell, 1943 showed it is not a species of Ceratonereis but belongs in Platynereis Kinberg, 1865, and the new combination Platynereis singularis is proposed. The epitokal morphology of the available specimens is described and discussed. Epitokes of Ceratonereis show more than one epitokal pattern, raising questions about the use of epitokal morphology to define genera or species. An annotated key for American Ceratonereis species is also included.
... Possessing a notopodial homogomph falciger would be an improbable condition. Nereis species with subequal or reducing dorsal ligules towards the posterior end and few paragnaths in a transverse row on areas VII-VIII have notopodial falcigers commonly starting from chaetigers 13-22 but rarely from chaetiger 8 or even from chaetigers 39-40 (see Hutchings & Turvey 1982;Wilson 1985;Dean 2001;Santos & Lana 2003;Núñez 2004;Santos 2007;Ramírez-Hernández et al. 2015). However, it is not yet present in the 53 chaetigers of the holotype, and, therefore, N. trifasciata is retained within Neanthes. ...
Neanthes Kinberg, 1865 is a speciose nereidid genus with some species exhibiting epitoky during the timing of reproduction. The epitokal morphology of males and females has long been agreed to be diagnostic to distinguish species. In the present study, we provide redescriptions of the type material and reassess the current taxonomic status of four Neanthes species originally described based on the reproductive forms of specimens collected from Southeast Asia: Neanthes augeneri (Gravier & Dantan, 1934), N. gisserana (Horst, 1924), N. trifasciata (Grube, 1878) and N. trifasciata vandersandei (Horst, 1924). The non-metamorphosed and epitokous diagnostic features, including new characters found in this study, were used to redescribe and distinguish these species from other congeners. The four species are here recognised in Neanthes, whereby N. vandersandei is elevated to species level. Neanthes gisserana is considered distinct from its previous senior synonym N. rubicunda (Ehlers, 1868). Morphology of both N. trifasciata and N. vandersandei, originally described based on mixed species, is restricted. Additionally, some remarks on the status of N. thysanota (Ehlers, 1908) are given. Distributional and reproductive data of the reviewed species are provided. An updated checklist of 80 valid species in Neanthes and synoptic tables of diagnostic features including the atokous and epitokous morphology are also presented.
... The neuropodial postchaetal lobe has been considered absent for Nereis species in recent phylogenetic analyses (Bakken andWilson 2005, Santos et al. 2005). Nevertheless some authors indicate its presence; Read (1980) for N. ovarius (Read), Santos and Lana (2003) for N. pseudomoniliformis (Santos and Lana), Chambers and Garwood (1992) for N. pelagica (and corroborated by us), and Darbyshire (2014) for N. eugeniae (Kinberg, 1865). Also, the three species herein described have postchaetal lobes shorter or subequal than neuroacicular ligules, and in epitoke specimens these lobes carry natatory lamellae; therefore, we considered postchaetal lobes as present in Nereis. ...
... On the other hand, N. oligohalina has been recorded along American Atlantic coasts from northeastern Brazil, chiefly in ecological (community assemblages on Spartina alterniflora and mangroves), or population studies (secondary production and population dynamics), as well as part of taxonomic or genetic studies (Amaral et al. 2012). A detailed record was made by Santos and Lana (2003); unfortunately, a commentary and one plate was based upon specimens collected in Todos Los Santos Bay, and indicated that their material agrees with the original description regarding neuropodial ventral ligules in posterior parapodia, and the feature was less developed in specimens from other localities but were regarded as the same because the prostomial pigmentation and paragnath number remained constant (Santos and Lana 2003). Lana et al. (2006) however, considered their previous record as a probable misidentification requiring a revision. ...
... On the other hand, N. oligohalina has been recorded along American Atlantic coasts from northeastern Brazil, chiefly in ecological (community assemblages on Spartina alterniflora and mangroves), or population studies (secondary production and population dynamics), as well as part of taxonomic or genetic studies (Amaral et al. 2012). A detailed record was made by Santos and Lana (2003); unfortunately, a commentary and one plate was based upon specimens collected in Todos Los Santos Bay, and indicated that their material agrees with the original description regarding neuropodial ventral ligules in posterior parapodia, and the feature was less developed in specimens from other localities but were regarded as the same because the prostomial pigmentation and paragnath number remained constant (Santos and Lana 2003). Lana et al. (2006) however, considered their previous record as a probable misidentification requiring a revision. ...
Type material of several polychaete species described by Enrique Rioja from Mexican coasts are lost, and the current status of some species is doubtful. Nereis
oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis
occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution. On the other hand, Nereis
garwoodi González-Escalante & Salazar-Vallejo, 2003, described from Chetumal Bay, Caribbean coasts, could be confused with Nereis
oligohalina. In order to clarify these uncertainties, Nereis
oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis
garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis
confusa
sp. n. is described with material from the Gulf of California. A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included.
... Por outro lado, o catálogo produzido por Amaral et al., (2013), que inclui também trabalhos divulgados em anais de congresso, o que não foi considerado como registro de espécies nesta pesquisa, mostra um total de 12 espécies, 6 gêneros e 3 famílias registradas (Nereididae, Cirratulidae e Amphinomidae). Dessa forma, considera-se que (2003) Coelho-Costa (2007) Lopes (1997), Lopes (2003), (2007) Lopes (2003) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997 Mochel (1997) Santos (1996), Santos & Lana (2003) Lopes (1997), Oliveira (2009) Oliveira & Mochel (1999), Mochel (2011) Santos & Lana (2001) Oliveira & Mochel (1999, Mochel (2011), Santos (1996, Santos & Lana (2003) Santos (1996, Santos & Lana (2003) Santos (1996; Santos & Steiner (2006) Oliveira & Mochel (1999, Mochel (2011), Santos (1996 Oliveira & Mochel (1999), Mochel (2011) Lopes (1997, Lopes (2003) Coelho-Costa (2007) Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (2003 Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997), Lopes (2003) Coelho-Costa (2007) Oliveira (1996) Dentre as famílias de poliquetas, Syllidae foi a que apresentou maior número de gêneros registrados para o Maranhão, perfazendo um total de 10 (Quado 2). Muito embora esta seja uma das famílias mais abundantes e diversificadas, ainda é pequeno o conhecimento acerca dos silídeos que ocorrem no litoral brasileiro (25 gêneros e 84 espécies), quando comparado, por exemplo, com a Península Ibérica, que apresenta especialistas em Syllidae estabelecidos há décadas (Fukuda, 2010). ...
... Por outro lado, o catálogo produzido por Amaral et al., (2013), que inclui também trabalhos divulgados em anais de congresso, o que não foi considerado como registro de espécies nesta pesquisa, mostra um total de 12 espécies, 6 gêneros e 3 famílias registradas (Nereididae, Cirratulidae e Amphinomidae). Dessa forma, considera-se que (2003) Coelho-Costa (2007) Lopes (1997), Lopes (2003), (2007) Lopes (2003) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997 Mochel (1997) Santos (1996), Santos & Lana (2003) Lopes (1997), Oliveira (2009) Oliveira & Mochel (1999), Mochel (2011) Santos & Lana (2001) Oliveira & Mochel (1999, Mochel (2011), Santos (1996, Santos & Lana (2003) Santos (1996, Santos & Lana (2003) Santos (1996; Santos & Steiner (2006) Oliveira & Mochel (1999, Mochel (2011), Santos (1996 Oliveira & Mochel (1999), Mochel (2011) Lopes (1997, Lopes (2003) Coelho-Costa (2007) Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (2003 Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997), Lopes (2003) Coelho-Costa (2007) Oliveira (1996) Dentre as famílias de poliquetas, Syllidae foi a que apresentou maior número de gêneros registrados para o Maranhão, perfazendo um total de 10 (Quado 2). Muito embora esta seja uma das famílias mais abundantes e diversificadas, ainda é pequeno o conhecimento acerca dos silídeos que ocorrem no litoral brasileiro (25 gêneros e 84 espécies), quando comparado, por exemplo, com a Península Ibérica, que apresenta especialistas em Syllidae estabelecidos há décadas (Fukuda, 2010). ...
... Por outro lado, o catálogo produzido por Amaral et al., (2013), que inclui também trabalhos divulgados em anais de congresso, o que não foi considerado como registro de espécies nesta pesquisa, mostra um total de 12 espécies, 6 gêneros e 3 famílias registradas (Nereididae, Cirratulidae e Amphinomidae). Dessa forma, considera-se que (2003) Coelho-Costa (2007) Lopes (1997), Lopes (2003), (2007) Lopes (2003) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997 Mochel (1997) Santos (1996), Santos & Lana (2003) Lopes (1997), Oliveira (2009) Oliveira & Mochel (1999), Mochel (2011) Santos & Lana (2001) Oliveira & Mochel (1999, Mochel (2011), Santos (1996, Santos & Lana (2003) Santos (1996, Santos & Lana (2003) Santos (1996; Santos & Steiner (2006) Oliveira & Mochel (1999, Mochel (2011), Santos (1996 Oliveira & Mochel (1999), Mochel (2011) Lopes (1997, Lopes (2003) Coelho-Costa (2007) Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (2003 Coelho-Costa (2007) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997) Oliveira & Mochel (1999), Mochel (2011) Lopes (1997), Lopes (2003) Coelho-Costa (2007) Oliveira (1996) Dentre as famílias de poliquetas, Syllidae foi a que apresentou maior número de gêneros registrados para o Maranhão, perfazendo um total de 10 (Quado 2). Muito embora esta seja uma das famílias mais abundantes e diversificadas, ainda é pequeno o conhecimento acerca dos silídeos que ocorrem no litoral brasileiro (25 gêneros e 84 espécies), quando comparado, por exemplo, com a Península Ibérica, que apresenta especialistas em Syllidae estabelecidos há décadas (Fukuda, 2010). ...
In this paper, a literature review was conducted to characterize the knowledge
produced about the group Annelida Polychaeta in the state of Maranhão,
indicating gaps and possibilities for study, besides rescuing its diversity, listing
the recorded species and the environments in which they occur. This study was
conducted by search databases, academic libraries and private collections of
researchers who have produced work about the group. The scientific production
related to polychaetes is dominated by informally published material (92.3%)
and majority of the studies analyzed (75.6%) was not specifically about the group
Polychaeta, but on benthic macrofauna, with predominance of work in mangroves
environments (59.6%). A total of 99 genera, 32 families and 38 taxa was identified
to the species level recorded for Maranhão. The knowledge of the polychaetous
fauna is still incipient, requiring greater investment and intensification of studies.
Thus, this literature review contributes towards synthesizing the knowledge
produced about the polychaetes, seeking to find the gaps and provide basis for
future studies to be conducted in Maranhão.
Key words: Polychaete fauna. Maranhão. History of knowledge. Records of
species.
Rhodolith beds are predominantly formed by calcareous red algae with a rich benthic fauna. Nonetheless, little is known about the biota relationships with their structural variability. Rhodolith shape, size and vitality were examined from 22 sampling stations in dense and sparse areas of a mesophotic rhodolith bed in the Campos Basin, Brazil located within a major oil production area. Nine taxonomic benthic faunal groups were identified: Mollusca (58 taxa), Polychaeta (51), Echinodermata (27), Crustacea (24), Bryozoa (20), Porifera (19), Cnidaria (6), Ascidiacea (2) and Brachiopoda (1). Cnidaria, Mollusca, Bryozoa and Brachiopoda were abundant in areas with gravelly/rhodolith bottoms, while Polychaeta were associated with sandy/muddy bottoms. The faunal composition in the Peregrino oil field showed greater species richness than observed in other rhodolith beds worldwide. The present study contributes to the knowledge of the structural, taxonomical and functional characteristics of a rhodolith bed present along the Brazilian continental shelf.
A faunistic and ecological study on the benthic macrofauna was carried out in the shellfish farm in Ain Chorb (Ain Taya), central Algeria. This study aims to characterise the composition, structure, and functioning of the benthic community to establish the reference state and ecological quality of the shellfish farm and to monitor its evolution through an adapted sampling and observation methodology adapted and used by the scientific community at the international level. Benthic fauna samples were collected in two different periods (warm and cold season) between February 2020 and June 2021; six grab samples were carried out at three sampling stations. Different indices were evaluated based on the benthic community characteristics (species richness, abundance, density, ecological and trophic groups, and the biotic index) and indicator species. An inventory of the macrobenthic fauna of the farm allowed us to identify 6 phyla, 10 classes, 48 families, 106 genera, and 138 species, with a total of 45960 ind/m2. The benthic assemblage is characterised by the dominance of the species Abra alba, Salvatoria clavata, Caecum spp., and Bittium spp. The results of the four benthic indices (the Shannon-Weaver diversity index [H′], the AZTI Marine Biotic Index [AMBI], the multivariate AZTI Marine Biotic Index [M-AMBI], and the BENTIX) indicated that that the sampling stations have a moderate and good ecological status. These results were confirmed by the abundance/biomass comparison curves and geometric abundance class methods. This study provides the first inventory and represents the reference state of the soft-bottom communities of the aquaculture farm. The findings also indicate that the macrobenthic assemblage is excellent indicator of the ecological status.
Background:
This study investigates the marine macroinvertebrate fauna of rhodolith beds (non-geniculated red corallinaceaous algae) in northeast Brazilian. A total of 57 species were identified, belonging to six phyla (Platyhelminthes, Annelida, Sipuncula, Mollusca, Arthropoda and Echinodermata), of which 50 are considered here as new records for the Paraíba State. Annelids (Class Polychaeta) were the most representative taxa in Miramar and Seixas Beaches, while molluscs were dominant in Maceió Beach.
New information:
This is the first study that includes an identification key, diagnostic features and distribution patterns worldwide and local (including new records) of the marine invertebrate fauna associated with rhodolith beds in northeast Brazil (State of Paraíba). Sampling events were performed in 2018, at low tide in the intertidal to shallow subtidal zones (1.5 and 4.0 m depth), in Miramar, Seixas and Maceió Beaches. A total of 17 species were found for the first time on Seixas Beach, as well as all identified species for Miramar and Maceió. This study tries to contribute to the knowledge of marine invertebrates in northeast Brazilian shallow habitats, providing a baseline for future environmental studies.
Introduction:
Rhodoliths are biogenic structures distributed worldwide, formed by several types of calcareous algae. They may host a great diversity of marine invertebrates, among which polychaetes are conspicuous and diversified representatives. Rhodolith beds are notwithstanding vulnerable to several human activities (e.g. exploitation of commercial species associated with rhodoliths, petroleum exploration, fishing activities, effluent discharges, and tourism), which may compromise that diversity. Tourism is presently increasing its impact on rhodolith beds. Global warming and ocean acidification are also determinant factors in faunal change.
Objective:
to analyse the polychaete assemblages associated with rhodolith beds subject to different intensities of touristic pressure at Seixas Beach (NE Brazil), where tourism is gradually increasing over time.
Methods:
Effects were evaluated at two depths, 1.5 m and 4.0 m. Sampling was done every two months during 2015, encompassing the two marked seasons of the year in the region (rainy and dry). Quadrats of 15 x 15 cm were placed in each depth during sampling. All rhodoliths present within the quadrat were collected (usually four to five rhodoliths). Our hypothesis was that the deeper depth and the samples from the dry season months would be increasingly subject to the impact of tourism.
Results:
Overall, 49 species were found (from 21 different families), and a total of 733 individuals were collected. The most abundant species was Eunice wasinensis (280 individuals, 38.2% of total abundance). The species Eurythoe complanata, Eunice biannulata, E. wasinensis, Lysidice ninetta, Oxydromus pugettensis and Ceratonereis (Ceratonereis) singularis appeared in all months. The study detected a tendency for higher diversity to occur at the depth of 1.5 m for all indices, but only the Shannon-Wiener values were significantly higher there (p < 0.05). No clear differences were found regarding months or season.
Conclusions:
These results suggest that a higher potential pressure due to tourism may occur at 4.0 m due to more intense craft shipping activities (traffic of catamaran boats transporting tourists to and from the reefs) in that area.
