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Check List and Authors Chec List Open Access | Freely Available at Journal of Species Lists and Distribution ISSN 1809-127X (online edition) © 2011 Check List and Authors Chec List Open Access | Freely available at www.checklist.org.br Journal of species lists and distribution Crustaceans composition in sandy beaches of Sepetiba PECIES S Bay, Rio de Janeiro, Brazil OF Ricardo S. Cardoso 1 1,2* 1,3 ISTS L , Felipe Meireis and Gustavo Mattos 1 Universidade Federal do Estado do Rio de Janeiro, Instituto de Biociências, Departamento de Ecologia e Recursos Marinhos, Laboratório de Ecologia Marinha. CEP 22290-240. Rio de Janeiro, RJ, Brazil. 2 Universidade Federal do Estado do Rio de Janeiro, Instituto de Biociências, Programa de Pós-Graduação em Ciências Biológicas (Biodiversidade Neotropical). CEP 22290-240. [email protected] de Janeiro, RJ, Brazil. 3 Universidade Federal do Rio de Janeiro, Instituto de Biologia, Programa de Pós-Graduação em Ecologia, CEP 21949-900. Rio de Janeiro, RJ, Brazil. * Corresponding author. E-mail: Abstract: A crustacean survey was made in Sepetiba bay, Rio de Janeiro state, southeastern Brazil. Twelve sandy beaches are grouped in 16 families, seven infraorders, seven suborders, and four orders. Isopods, followed by amphipods and tanaids,were sampled showed on the five highest islands abundance, in this embayment. amounting A total to over of 3024 92% individuals of the dominance were collected, of crustaceans. belonging The to main 21 species, species which were Excirolana armata, Excirolana braziliensis (isopods), Atlantorchestoidea brasiliensis (amphipod), and Monokalliapseudes schubarti (tanaid), which together accounted about 80% of crustaceans of the beaches studied. Excirolana braziliensis had the highest frequency. The majority of species found are typical of sandy beaches, with large spatial distribution. Introduction “Caracterização espacial da macrofauna de praias arenosas Crustaceans are typically marine invertebrates (Brusca em cinco Ilhas da Baía de Sepetiba, Rio de Janeiro”. Sepetiba and Brusca 2007), and are commonly found in coastal Bay (22°54’ – 23°04’ S; 44°34’ – 44°10’ W) is a sedimentary ecosystems, like estuaries, mangroves, rocky shores embayment located in Rio de Janeiro state, southeastern et al. 1997; Smith 2005; Brazil, with an area of 520 km2 (Cardoso et al. 2011). On et al. 2011).and sandy Thus, beaches many species (Ri-Qing have a great importance in the Flexeiras, Catita, Escalhau, Bonita, Jardim, Gamboa, Leste, economy,Sanchez-Moyano since several and Garcia-Asencio species are part 2011; of the Cardoso human diet Estopa,each twelve Pitangueiras, microtidal Sul, sandy and beaches Pier) ofone five sampling islands (Boi,was carried during 2007 and 2008 (Figure 1). The collected sediment was sieved through a 0.50 mm mesh, and the inas thewell assessment as they are ofused environmental as bait in fishing quality (Williams (Fowler 1974; et al. retained material was taken to the laboratory, where the 1978;Brown Bergamino 1995). Moreover, et al. 2009; these Amaral invertebrates et al. 2010). can be used In sandy beaches all over the world, crustaceans usually show a high dominance and frequency, especially Garzónorganisms (1949), were Loyola sorted e Silvaby species, (1960), counted, Lemos de and Castro fixed and in 5% buffered formalin. Identification was based on Mañé- 1999), Loyola e Silva and Alves (2000), Serejo (2004), environment,on beaches which peracarids are more (especially exposed isopods,to waves amphipods,(Defeo and FelderBrum (1969), et al. Barnard and Karaman (1991), Melo (1996; andMcLachlan mysids) 2005). and decapods Among members (anomurans of carcinofauna and brachyurans) in this (2009), and Souza-Filho (2011). Nomenclature Sepetiba Bay, located in the southern state of Rio and taxonomy were based on Martin and Davis (2001) deare Janeirothe most is abundant a tropical (McLachlan ecosystem and near Brown the city2006). of Rio and articles used to identification. The specimens were de Janeiro. This bay holds one of the most important deposited in the crustaceans collec tion at Museu Nacional, commercial ports in the Brazilian southeast region, with ResultsUniversidade and FederalDiscussion do Rio de Janeiro (MNRJ). A total of 3024 individuals of carcinofauna were reason it is considered an area of ​​potential development, collected, belonging to 21 species, which are distributed in emergingintense touristic, as a great fishing, industrial and industrial and tourist activities. center (Lacerda For this 16 families, seven infraorders, seven suborders, and four et al. 1987). orders (Table 1). Isopods, in conjunction with amphipods The purpose of the present work was to list the species and tanaids showed the highest abundance, amounting to of crustaceans inhabiting sandy beaches distributed on over 92% of the dominance of crustaceans. islands in Sepetiba Bay, state of Rio de Janeiro, Brazil. The main species were the peracarids Excirolana Thereby, this study will enable future works about the armata Excirolana braziliensis H. Richardson, 1912 (isopods) Atlantorchestoidea brasiliensis of the harbor in this region. 1853) Dana,(amphipod) 1853, and Monokalliapseudes schubarti ecology of these species and the responses to the influence (Dana, Materials and Methods for about 80% of crustaceans of the beaches studied. The material studied is derived from project Excirolana(Mañé-Garzón, braziliensis 1949) had(tanaid), the highest which frequency, together accounted occurring Check List | Volume 7 | Issue 6 | 2011 778 Cardoso et al. | Crustaceans in sandy beaches of Sepetiba Bay, Brazil in more than 80% of beaches. 2006). The cirolanid isopods are considered generalists in The high abundance of A. brasiliensis found on the terms of occupation of the adverse environment that beaches studied corroborate with the study by Veloso et al. (2003), showing that this species is typically found 2006), justifying the fact that these isopods were the most in high abundance on the exposed sandy beaches of frequentrepresent crustaceansthe sandy beacheson the beaches(McLachlan studied. and AmongBrown Rio de Janeiro. Besides this amphipod, the tanaid M. the species of cirolanids, E. braziliensis and E. armata schubartii, had high abundances, however occurring only noteworthy for having a broad geographical distribution, at two beaches (Gamboa and Pier beaches), which one are et al. 1997). The et al. 2011). It can be explained by the fact that this species is related to high often being found in coexistence (Defeo concentrationscharacterized by of fine organic sediment matter (Cardoso that is usually associated first occurs in tropical, subtropical and temperate along et al fromthe coasts Rio de of Janeiro the Atlantic to Argentina and North (Ribetti Pacific and (CardosoRoccatagliata and Brown 2006). Defeo 2003) while the second is more restricted, occurring with fine sediment (Bemvenuti . 1978; McLachlan and Figure 1. Location map of the 12 beaches sampling in Sepetiba Bay, also showing the bay mouth and Atlantic Ocean. 1: Jardim; 2: Flexeiras; 3: Gamboa; 4: Leste; 5: Boi; 6: Sul; 7: Escalhau; 8: Estopa; 9: Pitangueiras; 10: Catita; 11: Bonita; 12: Pier. Other species founded, but not with high abundances et al. and frequencies, are typical inhabitants of sandy beaches 2009). and have a large spatial distribution as the mole crab living in empty shells of this gastropod (Dominciano Emerita brasiliensis Schmitt, 1935 (decapod) that is a new genus and new species was found and described During the identification of specimens for thisRuffosius work, beaches along the Atlantic coast of South America from fluminensis (Figure 2) that was found in four of the beaches commonly found in the intertidal of reflective sandy studied.by Souza-Filho (2011). It is the amphipod and Cardoso 2004). Accordingly, the blue crab of genus The description of this new genus and new species CallinectesRio de Janeiro Stimpson (Brazil) 1860 to isMontevideo a swimming (Uruguay) decapod (Defeothat is shows the importance of a taxonomic survey in environments where the studies are scarce, thus sandy beaches of Sepetiba Bay are a potential area for the whichwidely was distributed found in from only Nova two beachesScotia to was northern the hermit Argentina crab Pagurus(Norse 1977). criniticornis Another common species. These ofhigh sandy abundances beaches these organisms that inhabit this environment can be of hermit crabs may be related with the dominance of useddiscovery as bioindicators, of new species once and the new beaches occurrences. are ecosystems Moreover, gastropods CerithiumDana, atratum 1852 in these beaches (Cardoso that suffer with the human action, for example recreation, et al. 2011), since P. criniticornis has a clear preference for et al. 2009). cleaning and pollution (Defeo Check List | Volume 7 | Issue 6 | 2011 779 Cardoso et al. | Crustaceans in sandy beaches of Sepetiba Bay, Brazil Table 1. List of crustacean species found on 12 beaches studied from Sepetiba Bay. ORDER SUBORDER INFRAORDER FAMILY SPECIES VOUCHER Talitrida Talitridae Atlantorchestoidea brasiliensis Gammaridea Gammarida Cheidae Ruffosius fluminensis (Dana, 1853) MNRJ23146 Amphipoda Corophiida Ampithoidae Cymadusa filosa Savigny, 1816 Souza-Filho, 2011 MNRJ21823 Corophiidea Caprella penantis Leach, 1814 Caprellida Caprellidae MNRJ23169 Monoliropus enodis Rayol and Serejo, 2003 MNRJ23147 Excirolana armata MNRJ23148 Cymothoida Cirolanidae Excirolana braziliensis Richardson, 1912 (Dana, 1853) MNRJ23149/23150 Isopoda Metacirolana cf. riobaldoi (Lemos de Castro and Lima, 1976) MNRJ23151/23152 Sphaeromatidea Sphaeromatidae Sphaeromopsis
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