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Map of Golfo Triste showing the locations of collecting sites in Morrocoy National Park (MNP) and at Boca de Aroa and Quizandal sandy beaches (isobaths in m).
Source publication
As for other crustacean peracarid taxa (i.e. amphipods, cumaceans, isopods), the mysid fauna of the Caribbean coast of Venezuela remains poorly known. Our study was based on the examination of 111 specimens collected at seven shallow-water marine localities in the Golfo Triste. A total of five genera and five species [Anchialina typica (Krøyer), Bo...
Contexts in source publication
Context 1
... mysid specimens were collected between 2000 and 2002 at five stations of Morrocoy National Park, Falcon State (Playa Sur, Boca Seca, Tumba Cuatro, Las Luisas and Cañ o Leon) and on two sandy beaches: Boca de Aroa (Falcon State) and Quizandal (Carabobo State) (Figure 1). The main characteris- tics of the sampling stations are provided in Table II. ...
Context 2
... chierchiae Coifmann 1937 Siriella chierchiae Coifmann 1937: 3, fig. 1; Tattersall 1951: 66, figs 15, 16;Brattegard 1970a: 2, fig. 1; 1970b: 116, fig. 2;1973: 9;1974a: 51;1974b: 91;1975: 109;Bãcescu & Ortiz 1984: 16, fig. 1a; Modlin 1984: 279;1987a: 109;Escobar-Briones & Soto 1988: 640;Markham et al. 1990: 411;Price et al. 2002: 40 Tattersall 1951;Brattegard 1970bBrattegard , 1973Brattegard , ...
Context 3
... chierchiae Coifmann 1937 Siriella chierchiae Coifmann 1937: 3, fig. 1; Tattersall 1951: 66, figs 15, 16;Brattegard 1970a: 2, fig. 1; 1970b: 116, fig. 2;1973: 9;1974a: 51;1974b: 91;1975: 109;Bãcescu & Ortiz 1984: 16, fig. 1a; Modlin 1984: 279;1987a: 109;Escobar-Briones & Soto 1988: 640;Markham et al. 1990: 411;Price et al. 2002: 40 Tattersall 1951;Brattegard 1970bBrattegard , 1973Brattegard , 1974aBrattegard , b, 1975Bãcescu & Ortiz 1984;Modlin 1987a;Markham et al. ...
Context 4
... chierchiae Coifmann 1937 Siriella chierchiae Coifmann 1937: 3, fig. 1; Tattersall 1951: 66, figs 15, 16;Brattegard 1970a: 2, fig. 1; 1970b: 116, fig. 2;1973: 9;1974a: 51;1974b: 91;1975: 109;Bãcescu & Ortiz 1984: 16, fig. 1a; Modlin 1984: 279;1987a: 109;Escobar-Briones & Soto 1988: 640;Markham et al. 1990: 411;Price et al. 2002: 40 Tattersall 1951;Brattegard 1970bBrattegard , 1973Brattegard , 1974aBrattegard , b, 1975Bãcescu & Ortiz 1984;Modlin 1987a;Markham et al. 1990;Price et al. 2002;Price & Heard 2004) and Brazil (Bond- Buckup & Tavares ...
Context 5
... 143;Price et al. 2002: 46, 47, fig 4M;Price & Heard 2004: 155, 156 Remarks. According to Brattegard (1973), the shape and ornamentation of the telson is highly vari- able depending on the geographical locality of specimens. The telson of the Venezuelan speci- mens is similar to telsons exhibited by Colom- bian specimens [see Brattegard (1973: fig. 19B, C)]. The most frequently collected mysid in the present collection (present in 17 of 25 ...
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Citations
... Sublittoral marine waters at the Caribbean coasts of Panama, Colombia and Venezuela. Sorbe et al. (2007) reported these mysids as P. bahamensis from fine soft sediments and sandy substrates in 1-25 m depth, in part with Thalassia, also from soft, organic silt beneath roots of mangrove trees. ...
Detection of previously unknown, dimorphic setal patterns on the carpus of the fifth thoracic endopod in types of Parvimysis bahamensis Brattegard, 1969, representing the type species of the genus Parvimysis Brattegard, 1969, required revision of this genus together with taxonomic verification of materials previously assigned to this species from all around the Caribbean. Study of this material together with new samples from marine waters of Curaçao led to the detection of five new species. Four of these species have a dimorphic carpus of the fifth endopod and are here described as P. pricei sp. nov., P. laminata sp. nov., P. brattegardi sp. nov., and P. ornata sp. nov. One species with non-dimorphic setal patterns is described as P. nuda sp. nov. Two species groups are defined based on structural differences of the carapace, mandibular and maxillary palpus, oostegites and telson: the P. bahamensis group with six species from marine waters of the Caribbean and an additional one from brackish-freshwaters of Surinam, versus the P. amazonica group with seven species from freshwaters of Amazonia. A key to the 14 species currently known from the genus Parvimysis is provided.
... We propose that the higher taxonomic richness and abundance of cryptic peracarids in the shallow back-reef of the PMRNP are related to reef development Notes. a Sorbe, Martin & Diaz (2007). b Markham & Donath-Hernández (1990. ...
Background and Aims
Cryptic peracarids are an important component of the coral reef fauna in terms of diversity and abundance, yet they have been poorly studied. The aim of this study was to evaluate the taxonomic richness and abundance of cryptic peracarids in coral rubble in the Puerto Morelos Reef National Park, Mexico (PMRNP), and their relationship with depth.
Methods
Three reef sites were selected: (1) Bonanza, (2) Bocana, and (3) Jardines. At each site six kilograms of coral rubble were collected over four sampling periods at three depths: 3 m (back-reef), 6–8 m (fore-reef), and 10–12 m (fore-reef).
Results
A total of 8,887 peracarid crustaceans belonging to 200 taxa distributed over five orders and 63 families was obtained; 70% of the taxa were identified to species and 25% to genus level. Fifty species of those collected represent new records for the Mexican Caribbean Sea. Isopoda was the most speciose order while Tanaidacea was the most abundant.
Discussion
Cryptic peracarid taxonomic richness and abundance were related to depth with higher values of both parameters being found in the shallow (3 m) back-reef, possibly due to a higher reef development and a greater accumulation of coral rubble produced during hurricanes. Peracarid data obtained in the present study can be used as a baseline for future monitoring programs in the PMRNP.
... Sin embargo, los avances principales en el conocimiento del grupo en estas 2 cuencas oceánicas se atribuyen a Brattegard (1969Brattegard ( , 1970aBrattegard ( , 1970bBrattegard ( , 1973Brattegard ( , 1974aBrattegard ( , 1974bBrattegard ( , 1975Brattegard ( , 1977Brattegard ( , 1980 y Bacescu (1968aBacescu ( , 1968bBacescu ( , 1968cBacescu ( , 1970. Para las especies estigobias, los manuscri-tos de Bacescu y Orghidan (1973, 1977, Bowman (1973), García-Garza et al. (1996), Ortiz y Lalana (1996) y Sorbe et al. (2007), constituyen avances taxonómicos importantes. ...
... La presente lista actualizada de los misidáceos fue compilada de un número importante de publicaciones relacionadas con el Mar Intra-Americano (Tattersall, 1951;Banner, 1954;Bacescu, 1968aBacescu, , 1968bBacescu, , 1968cBacescu, , 1970Brattegard, 1969Brattegard, , 1970aBrattegard, , 1970bBrattegard, , 1973Brattegard, , 1974aBrattegard, , 1974bBrattegard, , 1975Brattegard, , 1977Brattegard, , 1980Bacescu y Orghidan, 1973, 1977Bowman, 1973;Mauchline y Murano, 1977;Stuck et al., 1979;Mauchline, 1980;Bacescu y Ortiz, 1984;Modlin, 1984;Escobar-Briones y Soto, 1988, 1991Zoppi d Roa y Delgado, 1989;Price et al., 1994;García-Garza et al., 1992Ortiz y Lalana, 1996;Price y Heard, 2000, 2009, 2011Escobar-Briones, 2002;Barba y Sánchez, 2005;Sorbe et al., 2007;Ortiz y Lalana, 2010). ...
... Three species of mysids already reported for Venezuela (Sorbe, Martín, & Díaz, 2007) were also identified. These were C. dissimile, C. jimenesi and M. insularis which appeared in high abundance and frequency. ...
The suprabenthos or hyperbenthos is the macrofaunal assemblage of small-sized organisms that interact for some time in the benthic boundary layer. Information about the taxonomic composition and role of suprabenthic species, especially in littoral zones, is scarce and scattered. This work attempts to contribute alleviate this problem. We analyze the temporal and spatial variations of suprabenthic assemblages in the swash-zone from four beaches of the littoral coast of Venezuela. For each beach, two sites were chosen, and special attention was given to water and sediment characteristics. 12 environmental variables were measured: Dissolved oxygen, oxygen saturation percentage, pH, salinity, surface temperature, total, organic and inorganic suspended solids, total organic carbon, organic matter in sediment, grain size of sediment, and amount of dragged material of sample. All faunal samples were taken on a monthly basis during 2011; these were extracted using a manual suprabenthic sledge towed parallel to the shoreline. Samples were sorted and identified to their lowest possible taxonomic level. A total of 24 141 specimens (mean abundance: 26.16 +/- 55.35 ind./m2) belonging to 21 taxonomic groups were identified. Analysis suggests that seasonality does not explain observed changes either in fauna or environmental variables. It was found that suprabenthic assemblages, total suprabenthos density, richness and environmental variables changed in a dissimilar fashion between months and beaches. The most frequent groups were amphipods and decapods; and at the species/categories level post-larval shrimp (Penaeidae), Grapsidae crab megalopae and Arenaeus cribarius megalopae were common. Dissimilarity between months in each beach was primarily explained by the abundance of amphipods, ctenophores, decapods and mysids. For particular months and selected beaches very high abundances of ctenophores were found. This group dominated the sample even though it is not usually a representative group in suprabenthos. Samples showed low correlations between suprabenthos and environmental variables. A somewhat stronger correlation could be established between water characteristics and dragged material abundance. The studied suprabenthos assemblage was found to have high taxa richness and very dynamic behaviour at spatial and temporal scale. Further analysis suggested that there is no evident pattern of distribution and that causality can not be directly attributed to temporal variation only. Possibly there is an influence of a synergy of environmentals or biological factors, rather than a single variable. The species Americamysis bahia and Americamysis taironana are reported for the first time in Venezuela. This study represents the first ecological research of the suprabenthos in the Caribbean region.
... Three species of mysids already reported for Venezuela (Sorbe, Martín, & Díaz, 2007) were also identified. These were C. dissimile, C. jimenesi and M. insularis which appeared in high abundance and frequency. ...
The suprabenthos or hyperbenthos is the macrofaunal assemblage of small-sized organisms that interact for some time in the benthic boundary layer. Information about the taxonomic composition and role of suprabenthic species, especially in littoral zones, is scarce and scattered. This work attempts to contribute alleviate this problem. We analyze the temporal and spatial variations of suprabenthic assemblages in the swash-zone from four beaches of the littoral coast of Venezuela. For each beach, two sites were chosen, and special attention was given to water and sediment characteristics. 12 environmental variables were measured: Dissolved oxygen, oxygen saturation percentage, pH, salinity, surface temperature, total, organic and inorganic suspended solids, total organic carbon, organic matter in sediment, grain size of sediment, and amount of dragged material of sample. All faunal samples were taken on a monthly basis during 2011; these were extracted using a manual suprabenthic sledge towed parallel to the shoreline. Samples were sorted and identified to their lowest possible taxonomic level. A total of 24 141 specimens (mean abundance: 26.16±55.35ind./m²) belonging to 21 taxonomic groups were identified. Analysis suggests that seasonality does not explain observed changes either in fauna or environmental variables. It was found that suprabenthic assemblages, total suprabenthos density, richness and environmental variables changed in a dissimilar fashion between months and beaches. The most frequent groups were amphipods and decapods; and at the species/categories level post-larval shrimp (Penaeidae), Grapsidae crab megalopae and Arenaeus cribarius megalopae were common. Dissimilarity between months in each beach was primarily explained by the abundance of amphipods, ctenophores, decapods and mysids. For particular months and selected beaches very high abundances of ctenophores were found. This group dominated the sample even though it is not usually a representative group in suprabenthos. Samples showed low correlations between suprabenthos and environmental variables. A somewhat stronger correlation could be established between water characteristics and dragged material abundance. The studied suprabenthos assemblage was found to have high taxa richness and very dynamic behaviour at spatial and temporal scale. Further analysis suggested that there is no evident pattern of distribution and that causality can not be directly attributed to temporal variation only. Possibly there is an influence of a synergy of environmentals or biological factors, rather than a single variable. The species Americamysis bahia and Americamysis taironana are reported for the first time in Venezuela. This study represents the first ecological research of the suprabenthos in the Caribbean region.
... Sin embargo, los avances principales en el conocimiento del grupo en estas 2 cuencas oceánicas se atribuyen a Brattegard (1969Brattegard ( , 1970aBrattegard ( , 1970bBrattegard ( , 1973Brattegard ( , 1974aBrattegard ( , 1974bBrattegard ( , 1975Brattegard ( , 1977Brattegard ( , 1980 y Bacescu (1968aBacescu ( , 1968bBacescu ( , 1968cBacescu ( , 1970. Para las especies estigobias, los manuscri-tos de Bacescu y Orghidan (1973, 1977, Bowman (1973), García-Garza et al. (1996), Ortiz y Lalana (1996) y Sorbe et al. (2007), constituyen avances taxonómicos importantes. ...
... La presente lista actualizada de los misidáceos fue compilada de un número importante de publicaciones relacionadas con el Mar Intra-Americano (Tattersall, 1951;Banner, 1954;Bacescu, 1968aBacescu, , 1968bBacescu, , 1968cBacescu, , 1970Brattegard, 1969Brattegard, , 1970aBrattegard, , 1970bBrattegard, , 1973Brattegard, , 1974aBrattegard, , 1974bBrattegard, , 1975Brattegard, , 1977Brattegard, , 1980Bacescu y Orghidan, 1973, 1977Bowman, 1973;Mauchline y Murano, 1977;Stuck et al., 1979;Mauchline, 1980;Bacescu y Ortiz, 1984;Modlin, 1984;Escobar-Briones y Soto, 1988, 1991Zoppi d Roa y Delgado, 1989;Price et al., 1994;García-Garza et al., 1992Ortiz y Lalana, 1996;Price y Heard, 2000, 2009, 2011Escobar-Briones, 2002;Barba y Sánchez, 2005;Sorbe et al., 2007;Ortiz y Lalana, 2010). ...
Se presenta una lista actualizada y una clave ilustrada para la identificación de los 38 géneros marinos, estuarinos y estigobios de los misidáceos que habitan en el Mar Intra-Americano. Estos crustáceos incluyen 6 familias, 5 subfamilias y 5 tribus dentro de los órdenes Lophogastrida y Mysida. El primero contiene 5 géneros y el segundo 33; de éstos, 35 habitan el ambiente marino y el salobre, 2 el cárstico y 1, Antromysis, vive en cualquiera de los 3 ambientes. Los géneros Anchialina, Siriella, Mysidopsis, Mysidium y Heteromysis se distribuyen ampliamente en todo el Mar Intra-Americano. Contrariamente a Chalaraspidum, Euchaetomera, Eucopia, Gironomysis, Metamblyops, Mysidella, Palaumysis, Platymysis, Pleurerythrops, Pseudomma y Synerythrops con una distribución geográfica restringida. El Mar Caribe y el Golfo de México representan las 2 regiones biogeográficas con mayor número de géneros de misidáceos.
Revised definitions are given for the genus Mysidium Dana, 1852, and its eight previously known species, based on material from Curaçao, Bonaire and SE-Brazil, along with the evaluation of published data. Type material of Diamysis columbiae Zimmer, 1915, M. cubanense Băcescu & Ortiz, 1984 and M. rubroculatum Băcescu & Ortiz, 1984 is examined. A lectotype is designated for D. columbiae Zimmer, 1915, a senior synonym of Mysidium columbiae (Zimmer, 1915). Two new species are described, M. triangulare Wittmann sp. nov. from Curaçao and M. antillarum Wittmann sp. nov. from Curaçao and Bonaire. Known ranges are extended by first records of M. cubanense from Curaçao and Bonaire and of M. integrum W.M. Tattersall, 1951 from SE Brazil. Three morphologically different groups are established at the subgeneric level: (1) the nominotypical subgenus Mysidium Dana, 1852 with M. gracile (Dana, 1852), M. integrum, M. cubanense, M. rubroculatum and M. triangulare sp. nov. from the West Atlantic plus M. rickettsi Harrison & Bowman, 1987 from the East Pacific; (2) Occimysidium Wittmann subgen. nov. represented only by M. pumae Ortiz, Hendrickx & Winfield, 2017 from the Pacific coast of Mexico; and finally (3) Orientomysidium Wittmann subgen. nov. comprising M. columbiae and M. antillarum sp. nov. from the West Atlantic. The poorly known M. iliffei Băcescu, 1991 is not assigned to any subgenus. A key to the resulting three subgenera and ten nominal species of the genus Mysidium is given.
Se presenta una compilación del género Mysidium (Mysida), con las sinonimias de cada una de las ocho especies descritas a nivel mundial, así como la diagnosis, distribución regional y las observaciones de cada especie. Estos peracáridos acostumbran formar agregaciones en el día, con una dispersión durante la noche. Las especies de este género, distribuido únicamente en los mares someros de América tropical, se caracterizan por presentar los ojos montados en pedúnculos cortos, con órbitas bien desarrolladas, y el telson de forma cuadrangular o linguiforme, con sus márgenes siempre cubiertos en la mitad posterior por setas robustas, cortas, romas o puntiagudas. Los machos presentan el pleópodo 4 más de tres veces más largo que los restantes. En este trabajo, cada especie es ilustrada y se incluye una clave de identificación actualizada de los machos del género Mysidium.
ABSTRACT
A compilation of the genus Mysidium (Mysida), known as opossum shrimps, including synonymy for the genus and for each of the eight species known worldwide, diagnosis, regional distribution and specific comments are provided. They use to form small schools during the day but dispersed at night. Species of this genus, which is only distributed in the shallow seas of tropical America, are distinguished by the eyes mounted in short peduncle, well developed orbits, and a quadrangular or linguiform telson, always with margins of the posterior half covered with short robust, pointed or rounded setae. Males have pleopod 4 more of three times longer than the others. Each species is illustrated and an updated identification key for the males of the Mysidium species is included.
