Effects of biological traits on capture-induced parturition in a freshwater stingray and perspectives for species management.
conservation
fisheries management
fishing stress
premature birth
upper rio Paraná
viviparity
Journal
Journal of fish biology
ISSN: 1095-8649
Titre abrégé: J Fish Biol
Pays: England
ID NLM: 0214055
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
21
04
2020
revised:
20
05
2020
accepted:
22
05
2020
pubmed:
25
5
2020
medline:
17
12
2020
entrez:
25
5
2020
Statut:
ppublish
Résumé
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.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
546-551Subventions
Organisme : Funding for this study was provided by Fundação de Amparo à Pesquisa do Estado de São Paulo Research Grant 2014/16320-7, Ph.D. scholarship 2017/25273-0 to B.S. Rangel, Scientific Initiation scholarship 2016/11736-6 to L. Spada, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil Finance Code 001, Master Scholarship and Research Grant (PROAP).
Organisme : Fundaç~ao de Amparo è Pesquisa do Estado de S~ao Paulo Research
ID : 2014/16320-7
Organisme : Ph. D. scholarship
ID : 2017/25273-0
Organisme : Scientific Initiation scholarship
ID : 2016/11736-6
Organisme : Coordenaç~ao de Aperfeiçoamento de Pessoal de Nível Superior - Brasil Finance Code 001
Organisme : Master Scholarship and Research Grant (PROAP)
Informations de copyright
© 2020 The Fisheries Society of the British Isles.
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