Effects of biological traits on capture-induced parturition in a freshwater stingray and perspectives for species management

Autor(es)

de Sousa Rangel, Bianca ^[1] ; de Castro Ribeiro, Douglas ^[2] ; Chagas, Jumma M. A. ^[3] ; Spada, Lucas ^{[4, 5]} ; Moreira, Renata G. ^[1] ; da Silva Ribeiro, Cristiele ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Lab Metab & Reprod Organismos Aquat, Inst Biociencias, Dept Fisiol, Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Lab Ictiol, Dept Zool & Bot, Rua Cristovao Colombo, Sao Jose Do Rio Preto - Brazil

^[3] Univ Estadual Paulista, Lab Ecol Parasitismo, Dept Biol & Zootecnia, Ilha Solteira - Brazil

^[4] Univ Estadual Paulista, Lab Estudos Fisiol Anim, Dept Biol & Zootecnia, Ilha Solteira - Brazil

^[5] Univ Sao Paulo, Inst Biociencias, Programa Pos Grad Ciencias Fisiol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Fish Biology; v. 97, n. 2 JUL 2020.
• Citações Web of Science: 0

Resumo

Elasmobranchs are particularly vulnerable to overexploitation and population depletion, especially due to their life-history traits, such as low reproductive output and slow growth. Given that capture-induced parturition (abortion or premature birth) is a common consequence of fisheries in elasmobranchs, but still little studied, we investigated how the abortion/premature birth process varies in response to reproductive traits in a freshwater stingray,Potamotrygon amandae. Our results revealed that capture-induced parturition was affected by reproductive traits, such as litter size (one to seven) and gestation stage. The event occurred faster in pregnant females with high litter size during late pregnancy. Also, as found in other elasmobranchs, litter size was positively correlated with maternal size. These findings indicate that larger pregnant females in late pregnancy are more vulnerable to capture-induced parturition. This study improves our understanding of the capture-induced parturition process in stingrays, and provides useful information for management strategies and future recommendations for elasmobranch conservation. (AU)

• Processo FAPESP: 17/25273-0 - Ecofisiologia e relações tróficas de elasmobrânquios: biomarcadores como ferramentas para conservação
• Beneficiário: Bianca de Sousa Rangel
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/16320-7 - Impactos das mudanças climáticas e ambientais sobre a fauna: uma abordagem integrativa
• Beneficiário: Carlos Arturo Navas Iannini
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
• Processo FAPESP: 16/11736-6 - Metabolismo lipídico de raias Potamotrygon falkneri durante a reprodução
• Beneficiário: Lucas Spada
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica