Morphometric aspects of two coexisting amphidromous shrimps, Atya gabonensis Giebel, 1875 and Atya scabra (Leach, 1816), in the Paraíba do Sul River, Brazil

Autor(es)

Carvalho-Batista, Abner ^{[1, 2]} ; Oliveira, Caio M. C. A. ^[1] ; Souza, Guilherme ^[3] ; Carvalho, Fabricio Lopes ^[4] ; Mantelatto, Fernando Luis ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto FF, Dept Biol, Lab Bioecol & Sistemat Crustaceos LBSC, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Paulista UNIP, Inst Ciencias Saude, Ave Marques de Sao Vicente 3001, BR-05037040 Sao Paulo, SP - Brazil

^[3] ONG Projeto Piabanha, Campo Sementes, Caixa Postal 123546, BR-28570000 Rio De Janeiro - Brazil

^[4] Univ Fed Sul Bahia UFSB, Ctr Formacao Ciencias Agroflorestais CFCAf, Grp Pesquisa Carcinol & Biodiversidade Aquat GPCB, CEPEC CEPLAC, Rodovia Ilheus Itabuna, Km 22, BR-45662200 Ilheus, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Nauplius; v. 29, APR 16 2021.
• Citações Web of Science: 0

Resumo

Abstract Atya gabonensis Giebel, 1875 and Atya scabra (Leach, 1816) are amphidromous shrimps. In some areas, these species populations are vulnerable due to the anthropogenic impact on their habitats and commercial exploitation. However, basic morphometric data is still lacking. This study provides morphometric data on both species in the Fluvial Island Domain of Paraíba do Sul River basin, Brazil. Sampling was performed bimonthly from January 2013 to March 2014. Individuals were analysed according to sex, weight, carapace length and width, abdomen length, second abdominal pleura height and width, length of third pereopod articles, and length and width of the male appendix interna. We sampled 42 individuals of A. gabonensis and 16 individuals of A. scabra. In both species, females showed abdomen and second abdominal pleura larger than males, while males showed third pereopod articles larger than females, both related to sexual dimorphism. We detected differences in the carapace length × carapace width relationship and in the growth pattern of the male appendix interna between species, with A. gabonensis presenting the carapace and the male appendix interna wider than A. scabra. Morphometric aspects of both species are unpublished for this region, and this data is valuable for A. gabonensis in the western Atlantic and for A. scabra from Rio de Janeiro state. Such information is essential for future systematic assessment and establishment of conservation management policies. (AU)

• Processo FAPESP: 18/13685-5 - Análise integrativa da fauna brasileira de crustáceos decápodes: taxonomia, sistemática filogenética, espermiotaxonomia, morfologia do desenvolvimento pós-embrionário, ecologia e conservação
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático