REPRODUCTIVE ASPECTS OF THE SHRIMP CUAPETES AMERICANUS (KINGSLEY, 1878) (CARIDEA, PALAEMONIDAE) FROM BOCAS DEL TORO, PANAMA

Autor(es)

Negri, Mariana ; Magalhaes, Tatiana ; Rossi, Natalia ; Felder, Darryl L. ; Mantelatto, Fernando L.

• Tipo de documento: Artigo Científico
• Fonte: CRUSTACEANA; v. 90, n. 7-10, p. 1061-1078, 2017.
• Citações Web of Science: 0

Resumo

The shrimp Cuapetes americanus is widely distributed in shallow waters of the western Atlantic Ocean, inhabiting sandy and rocky bottoms, macroalgae, seagrass beds, and mangrove roots. As the life cycle and ecology of this species remain poorly known, we investigated some reproductive traits of this species at Bocas del Toro, Panama. We collected and examined 167 individuals (63 males, 58 non-ovigerous females and 46 ovigerous females). Although males numerically dominated the larger size classes, ovigerous females were significantly larger than males and non-ovigerous females. All 46 ovigerous females were used to calculate embryo loss and embryo volume increase. Only females with eggs at an initial developmental stage (n = 25) were used to estimate fecundity and reproductive output. A mean of 75.84 +/- 40.16 embryos (Ne = 32-208) occurred per female, a value near those reported for other species of Pontoniinae. A positive correlation between fecundity and female body size was observed, but it lacked significance. Likewise, a significant correlation between female body size and embryo volume was not detected. Embryo volume increased 35%, and females lost 26% of embryos on average during the incubation period, though significant changes were measurable only during early embryonic development. Mean reproductive output in the analysed reproductive event (0.22 +/- 0.11, R = 0.02-0.53) suggested a rate of energy investment in reproduction higher than average, as compared to females of most other decapods. A decrease in relative reproductive output was observed with the increase of female size, indicating that larger females were investing proportionally less energy in reproduction than smaller ones, when measured in relation to the body size, but this correlation also lacked significance. We review how these initial insights on reproduction of C. americanus at Bocas del Toro compare to those of other populations in various localities. (AU)

• Processo FAPESP: 09/54931-0 - Melhoria e capacitação das coleções científicas do Departamento de Biologia da Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
• Beneficiário: Carlos Alberto Garofalo
• Modalidade de apoio: Auxílio à Pesquisa - Programa Infraestrutura - Acervos biológicos
• Processo FAPESP: 12/06300-3 - Diversidade e estruturação genética do siri invasor Charybdis hellerii (A. Milne-Edwards, 1876) como ferramenta para inferências sobre o seu modo de introdução na costa americana
• Beneficiário: Mariana Negri Pereira
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 09/12409-5 - Revisão das espécies de Macrobrachium pertencentes ao complexo olfersi (Crustacea, Palaemonidae): análises morfológicas e moleculares
• Beneficiário: Natália Rossi
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• 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