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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 6
Affiliation:
[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
Total Affiliations: 5
Document type: Journal article
Source: Journal of Fish Biology; v. 97, n. 2 JUL 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 17/25273-0 - Ecophysiology and trophic relationships of elasmobranchs: biomarkers as tools for conservation
Grantee:Bianca de Sousa Rangel
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/16320-7 - Impacts of climate/environmental change on the fauna: an integrative approach
Grantee:Carlos Arturo Navas Iannini
Support Opportunities: Research Program on Global Climate Change - Thematic Grants
FAPESP's process: 16/11736-6 - Lipid metabolism of rays Potamotrygon falkneri during reproduction
Grantee:Lucas Spada
Support Opportunities: Scholarships in Brazil - Scientific Initiation