التفاصيل البيبلوغرافية
| العنوان: |
Population Genetic Structure of the Threatened Amazon River Turtle, Podocnemis sextuberculata (Testudines, Podocnemididae). |
| المؤلفون: |
DAS NEVES S. VIANA, MARIA, DOS ANJOS OLIVEIRA, JESSICA, AGOSTINI, MARIA AUGUSTA PAES, ERICKSON, JOSÉ, DE MORAIS, GIOVANNE MATIAS, DOS SANTOS MONJELÓ, LUIZ ALBERTO, ANDRADE, PAULO CÉSAR M., FÉLIX-SILVA, DANIELY, DE OLIVEIRA JÚNIOR, WALDESSE PIRAGÉ, SITES JR., JACK W., VOGT, RICHARD C., HRBEK, TOMAS, FARIAS, IZENI PIRES |
| المصدر: |
Chelonian Conservation & Biology; Dec2017, Vol. 16 Issue 2, p128-138, 11p |
| مصطلحات موضوعية: |
RARE reptiles, MITOCHONDRIAL DNA, REPTILES, REPTILE populations, PODOCNEMIDIDAE, POPULATION genetics |
| مصطلحات جغرافية: |
BRAZIL |
| مستخلص: |
Podocnemis sextuberculata (Pleurodira: Podocnemididae) is widely distributed throughout the Amazon drainage basin in Brazil, Colombia, and Peru. Telemetry and previous molecular data suggest that P. sextuberculata lacks population structure in the central Anazon basin of Brazil. Generalization of these results, however, requires much-broader sampling across a range of habitats of this broadly distributed species. For this reason, we tested the hypothesis of panmixia in P. sextuberculata, analyzing a total of 319 specimens sequenced for the mitochondrial control region. Our sampling included localities from 16 areas in the Amazon basin from rivers characteristic of the Amazon basin (whitewater), clearwater rivers of the Guiana shield (Brancc, Trombetas, and Nhamundá rivers), and the Brazilian shield (Xingu River). The hypothesis cf panmixia was rejected because the results of analysis of molecular variance, pairwise ®s~, and Bayesian analysis of population structure indicated population structure in the gronp of individuals from the locality of Xingu which was not correlated to a pattern of isolation by distance. We suggest that the populations of P. sextuberculata of the Brazilian Amazon b a s n are composed of 2 management units, one represented by populations restricted to the Xingu River and the other represented by all other populations. The population of the Xingu should be viewed with attention and concern, especially considering the direct and indirect impacts of dammiag the Xingu River. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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