NDLI: Data from: Nuclear markers reveal a complex introgression pattern among marine turtle species on the Brazilian coast (Dataset)

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Data from: Nuclear markers reveal a complex introgression pattern among marine turtle species on the Brazilian coast (Dataset)

Content Provider	Dryad
Author	Vilaça, Sibelle T. Vargas, Sarah M. Lara-Ruiz, Paula Molfetti, Érica Reis, Estéfane C. Lôbo-Hajdu, Gisele Soares, Luciano S. Santos, Fabrício R.
Abstract	A surprisingly high frequency of interspecific sea turtle hybrids have been previously recorded in a nesting site along a short stretch of the Brazilian coast. Mitochondrial DNA data indicated that as much as 43% of the females identified as E. imbricata are hybrids in this area (Bahia State of Brazil). It is a remarkable find, since most of the nesting sites surveyed worldwide, including some in northern Brazil, presents no hybrids, and rare Caribbean sites present no more than 2% of hybrids. Thus, a detailed understanding of the hybridization process is needed to evaluate natural or anthropogenic causes of this regional phenomenon in Brazil, which could be an important factor affecting the conservation of this population. We analyzed a set of 12 nuclear markers to investigate the pattern of hybridization involving three species of sea turtles: hawksbill (Eretmochelys imbricata), loggerhead (Caretta caretta), and olive ridley (Lepidochelys olivacea). Our data indicate that most of the individuals in the crossings L. olivacea × E. imbricata and L. olivacea × C. caretta are F1 hybrids, whereas C. caretta × E. imbricata crossings present F1 and backcrosses with both parental species. In addition, the C. caretta × E. imbricata hybridization seems to be gender and species biased, and we also found one individual with evidence of multispecies hybridization among C. caretta × E. imbricata × Chelonia mydas. The overall results also indicate that hybridization in this area is a recent phenomenon, spanning at least two generations or ~40 years.
File Size	112522
File Format	HTM / HTML
ISSN	09621083
DOI	10.5061/dryad.j5240
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46802
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46803
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46807
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46804
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46805
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/46806
Language	English
Publisher Date	2012-05-24
Access Restriction	Open
Subject Keyword	Reptiles Lepidochelys Olivacea Eretmochelys Imbricata Caretta Caretta Holocene Chelonia Mydas
Content Type	Text
Resource Type	Data Set
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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