NDLI: Polyandry and multiple paternities in the threatened Agassiz’s desert tortoise, Gopherus agassizii

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Polyandry and multiple paternities in the threatened Agassiz’s desert tortoise, Gopherus agassizii

Content Provider	Springer Nature Link
Author	Davy, Christina M. Edwards, Taylor Lathrop, Amy Bratton, Mark Hagan, Mark Henen, Brian Nagy, Kenneth A. Stone, Jonathon Hillard, L. Scott Murphy, Robert W.
Copyright Year	2011
Abstract	We used data from 17 to 20 microsatellite markers to investigate the incidence of multiple paternities in wild Agassiz’s desert tortoises, Gopherus agassizii. Neonates were sampled from clutches of eggs laid by wild mothers in nesting enclosures at Edwards Air Force Base and at the Marine Corps Air Ground Combat Center, California. We genotyped 28 clutches from 26 females sampling an average of six neonates per clutch. The number of paternal alleles was used to determine the minimum number of sires for each clutch. Based on conservative criteria requiring evidence from at least two loci to determine multiple paternity, a minimum of 64% of females were polyandrous, while a minimum of 57% of clutches were sired by multiple males. This formed one of the highest incidences of multiple paternities recorded to date in any species of tortoise. The high number of microsatellite loci involved in the analyses allowed detection of multiple paternities in clutches where this may have been missed if fewer loci were used. Our results highlighted the potential pitfalls of quantitatively comparing paternity studies based on differing sampling strategies. Finally, we summarized the conservation implications of the high rate of multiple paternities in this threatened species.
Starting Page	1313
Ending Page	1322
Page Count	10
File Format	PDF
ISSN	15660621
Journal	Conservation Genetics
Volume Number	12
Issue Number	5
e-ISSN	15729737
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-08-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CERVUS Chelonids Microsatellites Reproductive strategy Tortoise conservation Animal Anatomy / Morphology / Histology Evolutionary Biology Conservation Biology/Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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