Inbreeding depression in sperm quality in a critically endangered amphibian.
Lithobates sevosus
assisted reproductive technologies
captive breeding
dusky gopher frog
fertility
Journal
Zoo biology
ISSN: 1098-2361
Titre abrégé: Zoo Biol
Pays: United States
ID NLM: 8807837
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
08
01
2019
revised:
07
10
2019
accepted:
21
02
2020
pubmed:
7
3
2020
medline:
17
12
2020
entrez:
7
3
2020
Statut:
ppublish
Résumé
Small, isolated populations often experience increased inbreeding and decreased heterozygosity, which increases the potential risk of inbreeding depression. The relationship between inbreeding and sperm health is well-documented in a variety of taxa, but has yet to be explored in amphibians. The dusky gopher frog, Lithobates sevosus, is a critically endangered species with years of documented inbreeding and low genetic variability as a consequence of isolation and population size reduction. This study investigated the effects of inbreeding on sperm quality in captive L. sevosus using an outbred, sister species (Lithobates pipiens) as a standard for comparison. We found L. sevosus to have severely reduced sperm quality in terms of total motility, forward progressive motility, concentration, and viability. Additionally, we observed a significant, negative relationship between total sperm motility and mean kinship within captive-bred individuals. These data serve to enhance our understanding of the role inbreeding plays in amphibians, and to provide valuable insight into new risk factors declining amphibian populations may face.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
197-204Subventions
Organisme : Institute of Museum and Library Services
ID : MG-30-15-0076
Informations de copyright
© 2020 Wiley Periodicals, Inc.
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