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Caprellids (Crustacea: Amphipoda: Caprellidae) from Shallow Waters of the Caribbean Coast of Venezuela

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Caprellids (Crustacea: Amphipoda: Caprellidae) from Shallow Waters of the Caribbean Coast of Venezuela Org. Divers. Evol. 5, Electr. Suppl. 10: 1 - 25 (2005) © Gesellschaft für Biologische Systematik URL: http://www.senckenberg.de/odes/05-10.htm URN: urn:nbn:de:0028-odes0510-4 Caprellids (Crustacea: Amphipoda: Caprellidae) from shallow waters of the Caribbean coast of Venezuela Yusbelly J. Díaza, José M. Guerra-Garcíab, *, Alberto Martína a Universidad Simón Bolívar, Departamento Estudios Ambientales e INTECMAR, Apartado 89000, Caracas 1086- A, Venezuela b Laboratorio de Biología Marina, Departamento Fisiología y Zoología, Facultad de Biología, Universidad de Sevil- la, Avda Reina Mercedes 6, 41012 Sevilla, Spain * Corresponding author, e-mail: [email protected] Received 30 April 2004 • Accepted 2 November 2004 Abstract The caprellidean fauna of Venezuela is investigated. Twenty-seven stations in shallow waters of the states Falcón, Carabobo, Aragua, An- zoátegui, Sucre and Nueva Esparta were sampled, and the caprellids were sorted and identified. A total of 3984 specimens were identified; twelve species in eight genera are reported. Two species, Caprella penantis Leach, 1814 and Paracaprella digitimanus Quitete, 1971, are new records for Venezuelan waters. An identification key and illustrations are provided for all caprellid species known from Venezuela, as well as comments on their distribution and ecology. Keywords: Crustacea; Amphipoda; Caprellidae; New records; Venezuela; Identification key Introduction The caprellidean amphipods of Venezuela have been died; undoubtedly, many new records and species will scarcely studied. McCain (1968) and McCain & Stein- be reported from there. Recent attempts to improve the berg (1970) reported the presence of six species: Ca- knowledge of caprellids along these coasts have been prella equilibra Say, 1818, Deutella incerta (Mayer, carried out in Chile (Guerra-García 2001; Guerra-Gar- 1903), Hemiproto wigleyi McCain, 1968, Mayerella cía & Thiel 2001; Thiel et al. 2003), Brazil (Wakabara redunca McCain, 1968, Paracaprella pusilla Mayer, et al. 1991; Wakabara & Serejo 1998), and the Gulf 1890, and Phtisica marina Slabber, 1769. Stoner & of Mexico (Ortíz et al. 2002; Escobar-Briones & Win- Lewis (1985), conducted an ecological study in the Ar- field 2003). In addition, the Laboratory of Peracaridean chipelago Los Roques and recorded the species Pseu- Crustaceans from Simón Bolívar University, Venezu- daeginella biscaynensis (McCain, 1968) and Hemiae- ela, has been developing a sampling programme, focu- gina minuta Mayer, 1890. Villarroel & Graciani (1997) sing on collecting peracaridean crustaceans, especially published the first record of Caprella danilevskii Czer- amphipods, from the shallow waters of Venezuela. The niavskii, 1868 for Venezuela. Recently, Guerra-García caprellids from these collections have been studied, (2003a), as a part of the revision of the genus Deutella, and the results are included in the present paper. Two described Deutella margaritae Guerra-García, 2003 new species records for Venezuelan waters are repor- based on material from Isla Margarita. Consequently, ted, illustrations are provided for all twelve caprellid to our knowledge, only ten species have been reported species known from Venezuela, and an identification from Venezuelan waters. key based on these figures is presented. The lack of studies dealing with the caprellids from Venezuela is also applicable to other areas of Central Material and methods and South America. McCain & Steinberg (1970) poin- Samples were collected from a total of 27 stations ted out that the coasts of these areas are virtually unstu- along the Venezuelan coast from 1980-2003 (Table 1 Org. Divers. Evol. 5, Electr. Suppl. 10 (2005) Díaz & al.: Caprellids (Crustacea: Amphipoda) from Venezuela 2 and Fig. 1). All sites were sampled from the intertidal MNCN = Museo Nacional de Ciencias Naturales, to 3m depth using snorkeling, SCUBA, van Veen grabs Madrid, Spain. or trawling, except for station 3 where sampling was USB = Colección del Laboratorio de Crustáceos Pe- carried out at 15 m using a van Veen grab only. Samp- racáridos de la Universidad Simón Bolívar, Caracas, les of potentially suitable substrates for caprellids were Venezuela. collected (mainly algae, seagrasses, hydroids, bryozo- USNM = National Museum of Natural History, ans, mussels and oysters fouling, and sediments). All Smithsonian Institution, Washington D.C., USA. the samples were fixed in 70% ethanol, and the speci- Abbreviated lists of synonymies are included for mens were sorted using a stereo microscope. each species. A more extensive synonymy is found in Although the phylogeny and higher classification of McCain & Steinberg (1970). A lateral view of a gene- the caprellids is still under debate (e.g. Laubitz 1993; ralized caprellid (Fig. 2) demonstrates the morphologi- Takeuchi 1993), we follow the recent classification of cal terms used in the key. In the illustrations for each Myers & Lowry (2003) in the present paper, and our species (Figs. 3-16), the respective most important cha- study has focused on members of the family Caprel- racteristics are indicated by arrows. lidae. The specimens examined for this study are deposi- ted in the following institutions: Table 1: List of stations sampled for the present study. See also Fig. 1. Station Locality Coordinates State 1 Playa Sur 10º55’13” N, 68º16’22” W Falcón (FA) 2 Cayo Sombrero 10º52’74” N, 68º12’54” W Falcón (FA) 3 Boca Grande 10º50’55” N, 68º13’29” W Falcón (FA) 4 Boca Seca 10º51’05” N, 68º14’07” W Falcón (FA) 5 Playa Caimán 10º61’10” N, 68º14’09” W Falcón (FA) 6 Tumba Cuatro 10º50’72” N, 68º15’57” W Falcón (FA) 7 Las Luisas 10º51’47” N, 68º17’69” W Falcón (FA) 8 Caño León 10º51’19” N, 68º19’50” W Falcón (FA) 9 Caño Capuchinos 10º49’40” N, 68º18’13” W Falcón (FA) 10 Planta Centro 10º30’00” N, 68º09’20” W Carabobo (CA) 11 Isla Larga 10º29’16” N, 67º57’00” W Carabobo (CA) 12 Veluz estación 2 10º30’16” N, 67º43’15” W Aragua (AR) 13 Veluz estación 4 10º30’21” N, 67º41’46” W Aragua (AR) 14 Veluz estación 5 10º30’24” N, 67º41’23” W Aragua (AR) 15 Petrozuata DII PDSE A-R1 11º03’01” N, 64º55’50” W Anzoátegui (AN) 16 MMCJ 14-00 B-08/r4 10º06’32” N, 64º47’19” W Anzoátegui (AN) 17 Chacopata 10º21’28” N, 64º20’49” W Sucre (SU) 18 Playa Medina 10º42’52” N, 63º00’45” W Sucre (SU) 19 Cipara 10º44’59” N, 62º41’57” W Sucre (SU) 20 Guayacán 10º39’08” N, 63º49’44” W Sucre (SU) 21 Isla Caribe 10º41’24” N, 63º51’07” W Sucre (SU) 22 Laguna de Punta de Piedras 10º53’55” N, 63º55’30” W Nueva Esparta (NE) 23 Puente de la Laguna de La 10º58’44” N, 64º10’00” W Nueva Esparta (NE) Restinga 24 Ostrero La Salle 10º59’05” N, 64º09’50” W Nueva Esparta (NE) 25 Laguna de La Restinga 11º01’89” N, 63º49’33” W Nueva Esparta (NE) 26 Playa Guacuco 11º03’38” N, 63º48’77” W Nueva Esparta (NE) 27 Playa El Agua 11º08’61” N, 63º48’77” W Nueva Esparta (NE) Org. Divers. Evol. 5, Electr. Suppl. 10 (2005) Díaz & al.: Caprellids (Crustacea: Amphipoda) from Venezuela 3 List of species – Head and pereonite 1 with dorsal projections. Per- eonite 2 without ventral projection. Abdomen with Family Caprellidae Leach, 1814 shorter appendages ................................................ ....................Pseudaeginella biscaynensis (Fig. 14) Subfamily Caprellinae Leach, 1814 9. Head with one or two dorsal projections . Deutella Caprella danilevskii Czerniavskii, 1868 incerta (spiny form) (Fig. 7) Caprella equilibra Say, 1818 – Head smooth, without dorsal projections .......... 10 Caprella penantis Leach, 1814 10. Antenna 1 longer than combined length of head Deutella incerta (Mayer, 1903) plus pereonites 1 and 2 ...................................... 11 Deutella margaritae Guerra-García, 2003 – Antenna 1 shorter than combined length of head Hemiaegina minuta Mayer, 1890 plus pereonites 1 and 2 ...................................... 12 Mayerella redunca McCain, 1968 11. Anterolateral projections on pereonites 3 and 4 well Paracaprella digitimanus Quitete, 1971 developed ................................................................ Paracaprella pusilla Mayer, 1890 .................................. Deutella margaritae (Fig. 8) Pseudaeginella biscaynensis (McCain, 1968) – Anterolateral projections on pereonites 3 and 4 not well developed ....................................................... Subfamily Phtisicinae Vassilenko, 1968 ................ Deutella incerta (smooth form) (Fig. 6) Hemiproto wigleyi McCain, 1968 12. Propodus of gnathopod 2 with a ventral projection Phtisica marina Slabber, 1769 medially .................................................................. ........................ Paracaprella digitimanus (Fig. 12) Key to the species of Caprellidae from Venezuela – Propodus of gnathopod 2 without ventral projec- This key is meant as an easy field guide to be used tion ......................... Paracaprella pusilla (Fig. 13) without dissections. For illustration of morphological terms see Fig. 2. Data on individual species 1. Gills on pereonites 2-4. Pereopods 3 and 4 six-arti- Subfamily Caprellinae Leach, 1814 culate .................................................................... 2 – Gills on pereonites 3 and 4. Pereopods 3 and 4 redu- Caprella danilevskii Czerniavskii, 1868 ced (one- or two-articulate) or absent .................. 3 (Fig. 3) 2. Abdomen with two pairs of appendages in males, Caprella Danilevskii Czerniavskii, 1868: 92, pl. 6, figs. one pair in females ................................................. 21-34. – Mayer (1890: 58, pl. 5, fig. 44; pl. 7, figs. 12- ................................... Hemiproto wigleyi (Fig. 15) 13) – Abdomen
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