Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata)
The Yucatán Peninsula in Mexico contains some of the largest breeding groups of the globally distributed and critically endangered hawksbill turtle (Eretmochelys imbricata). An improved understanding of the breeding system of this species and how its genetic variation is structured among nesting areas is required before the threats to its survival can be properly evaluated. Here, we genotype 1195 hatchlings and 41 nesting females at 12 microsatellite loci to assess levels of multiple paternity, genetic variation and whether individual levels of homozygosity are associated with reproductive success. Of the 50 clutches analyzed, only 6% have multiple paternity. The distribution of pairwise relatedness among nesting localities (rookeries) was not random with elevated within-rookery relatedness, and declining relatedness with geographic distance indicating some natal philopatry. Although there was no strong evidence that particular rookeries had lost allelic variation via drift, younger turtles had significantly lower levels of genetic variation than older turtles, suggesting some loss of genetic variation. At present there is no indication that levels of genetic variation are associated with measures of reproductive success such as clutch size, hatching success, and frequency of infertile eggs.
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Subjects: | info:eu-repo/classification/Autores/GENETIC DIVERSITY, info:eu-repo/classification/Autores/HAWKSBILL TURTLE, info:eu-repo/classification/Autores/MATING SYSTEM, info:eu-repo/classification/Autores/MULTIPLE PATERNITY, info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS, info:eu-repo/classification/cti/2, |
Online Access: | http://cicy.repositorioinstitucional.mx/jspui/handle/1003/505 |
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dig-cicy-1003-5052017-08-07T14:04:45Z Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) BLANCA IDALIA GONZALEZ GARZA Adam Stow LORENZO FELIPE SÁNCHEZ TEYER JOSE OMAR ZAPATA PEREZ 2015-12-01 info:eu-repo/semantics/article The Yucatán Peninsula in Mexico contains some of the largest breeding groups of the globally distributed and critically endangered hawksbill turtle (Eretmochelys imbricata). An improved understanding of the breeding system of this species and how its genetic variation is structured among nesting areas is required before the threats to its survival can be properly evaluated. Here, we genotype 1195 hatchlings and 41 nesting females at 12 microsatellite loci to assess levels of multiple paternity, genetic variation and whether individual levels of homozygosity are associated with reproductive success. Of the 50 clutches analyzed, only 6% have multiple paternity. The distribution of pairwise relatedness among nesting localities (rookeries) was not random with elevated within-rookery relatedness, and declining relatedness with geographic distance indicating some natal philopatry. Although there was no strong evidence that particular rookeries had lost allelic variation via drift, younger turtles had significantly lower levels of genetic variation than older turtles, suggesting some loss of genetic variation. At present there is no indication that levels of genetic variation are associated with measures of reproductive success such as clutch size, hatching success, and frequency of infertile eggs. info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 Ecology and Evolution. 5(24), 5758-5769, 2015 http://cicy.repositorioinstitucional.mx/jspui/handle/1003/505 info:eu-repo/semantics/datasetDOI/DOI: 10.1002/ece3.1844 info:eu-repo/semantics/openAccess eng citation:González-Garza, B. I., Stow, A., Sánchez-Teyer, L. F., & Zapata-Pérez, O. (2015). Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (eretmochelys imbricata). Ecology and Evolution, 5(24), 5758-5769. doi:10.1002/ece3.1844 http://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/publishedVersion application/pdf |
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info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 |
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info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 BLANCA IDALIA GONZALEZ GARZA Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
description |
The Yucatán Peninsula in Mexico contains some of the largest breeding groups of the globally distributed and critically endangered hawksbill turtle (Eretmochelys imbricata). An improved understanding of the breeding system of this species and how its genetic variation is structured among nesting areas is required before the threats to its survival can be properly evaluated. Here, we genotype 1195 hatchlings and 41 nesting females at 12 microsatellite loci to assess levels of multiple paternity, genetic variation and whether individual levels of homozygosity are associated with reproductive success. Of the 50 clutches analyzed, only 6% have multiple paternity. The distribution of pairwise relatedness among nesting localities (rookeries) was not random with elevated within-rookery relatedness, and declining relatedness with geographic distance indicating some natal philopatry. Although there was no strong evidence that particular rookeries had lost allelic variation via drift, younger turtles had significantly lower levels of genetic variation than older turtles, suggesting some loss of genetic variation. At present there is no indication that levels of genetic variation are associated with measures of reproductive success such as clutch size, hatching success, and frequency of infertile eggs. |
author2 |
Adam Stow |
author_facet |
Adam Stow BLANCA IDALIA GONZALEZ GARZA |
format |
info:eu-repo/semantics/article |
topic_facet |
info:eu-repo/classification/Autores/GENETIC DIVERSITY info:eu-repo/classification/Autores/HAWKSBILL TURTLE info:eu-repo/classification/Autores/MATING SYSTEM info:eu-repo/classification/Autores/MULTIPLE PATERNITY info:eu-repo/classification/Autores/REPRODUCTIVE SUCCESS info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/2 |
author |
BLANCA IDALIA GONZALEZ GARZA |
author_sort |
BLANCA IDALIA GONZALEZ GARZA |
title |
Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
title_short |
Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
title_full |
Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
title_fullStr |
Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
title_full_unstemmed |
Genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (Eretmochelys imbricata) |
title_sort |
genetic variation, multiple paternity, and measures of reproductive success in the critically endangered hawksbill turtle (eretmochelys imbricata) |
url |
http://cicy.repositorioinstitucional.mx/jspui/handle/1003/505 |
work_keys_str_mv |
AT blancaidaliagonzalezgarza geneticvariationmultiplepaternityandmeasuresofreproductivesuccessinthecriticallyendangeredhawksbillturtleeretmochelysimbricata |
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1756089380396597248 |