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Multiple Paternity in a Reintroduced Population of the Orinoco Crocodile (Crocodylus intermedius) at the El Frio Biological Station, Venezuela
Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY USA.;Amer Museum Nat Hist, Sackler Inst Comparat Genom, New York, NY 10024 USA..
Fdn Palmarito Casanare, Bogota, Colombia.;CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolutiva, E-28006 Madrid, Spain.;Estn Biol Frio, Apure, Venezuela..
CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolutiva, E-28006 Madrid, Spain.;Louisiana State Univ, Dept Biol Sci, LSU Museum Nat Sci, Baton Rouge, LA 70803 USA..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
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2016 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 11, no 3, e0150245Article in journal (Refereed) PublishedText
Abstract [en]

The success of a reintroduction program is determined by the ability of individuals to reproduce and thrive. Hence, an understanding of the mating system and breeding strategies of reintroduced species can be critical to the success, evaluation and effective management of reintroduction programs. As one of the most threatened crocodile species in the world, the Orinoco crocodile (Crocodylus intermedius) has been reduced to only a few wild populations in the Llanos of Venezuela and Colombia. One of these populations was founded by reintroduction at Cano Macanillal and La Ramera lagoon within the El Frio Biological Station, Venezuela. Twenty egg clutches of C. intermedius were collected at the El Frio Biological Station for incubation in the lab and release of juveniles after one year. Analyzing 17 polymorphic microsatellite loci from 335 hatchlings we found multiple paternity in C. intermedius, with half of the 20 clutches fathered by two or three males. Sixteen mothers and 14 fathers were inferred by reconstruction of multilocus parental genotypes. Our findings showed skewed paternal contributions to multiple-sired clutches in four of the clutches (40%), leading to an overall unequal contribution of offspring among fathers with six of the 14 inferred males fathering 90% of the total offspring, and three of those six males fathering more than 70% of the total offspring. Our results provide the first evidence of multiple paternity occurring in the Orinoco crocodile and confirm the success of reintroduction efforts of this critically endangered species in the El Frio Biological Station, Venezuela.

Place, publisher, year, edition, pages
2016. Vol. 11, no 3, e0150245
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-286664DOI: 10.1371/journal.pone.0150245ISI: 000372574900027OAI: diva2:923636
Available from: 2016-04-27 Created: 2016-04-21 Last updated: 2016-04-27Bibliographically approved

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