10.5061/DRYAD.MB2SF
Oliveira, Deyla
Federal University of Amazonas
Marioni, Boris
Programa de Conservação de Crocodilianos Amazônicos, Instituto Piagaçu,
Rua UZ, Quadra Z, Número 8, Conjunto Morada do Sol, Aleixo, Manaus, AM
69060-000, Brazil
Farias, Izeni
Federal University of Amazonas
Hrbek, Tomas
Federal University of Amazonas
Data from: Genetic evidence for polygamy as a mating strategy in Caiman
crocodilus
Dryad
dataset
2014
system of mating
Conservation genetics and biodiversity
Reproductive strategies and kinship analysis
Caiman crocodilus
Purus river
Holocene
multi-year multiple-paternity analysis
2014-03-03T17:23:45Z
2014-03-03T17:23:45Z
en
https://doi.org/10.1093/jhered/esu020
439296 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The mating system of the spectacled caiman (Caiman crocodilus) was
investigated in the Piagaçu-Purus Sustainable Development Reserve,
Amazonas, Brazil. We used six polymorphic microsatellite loci to genotype
15 females and 174 hatchlings representing 20 nests sampled over four
consecutive reproductive seasons (2007 to 2010). Paternity was determined
by two methods: simple counts, and statistical analysis using Gerud 2.0.
Results were congruent between the two approaches, and the null hypothesis
of single paternity was rejected in 19 of the 20 nests analyzed, thereby
demonstrating that C. crocodilus females are polyandrous and that the
breeding system of the species can be characterized as polygamous. The
data suggest that one to four fathers were responsible for the paternity
of the offspring, and that the males contributed differently (9%-100%) to
each of the 20 nests. A total of 53 males copulated with the 20 females
mothering the nests. This is the first study on the mating system of C.
crocodilus and the frequency of multiple paternity is among the highest
values (95%) reported thus far for crocodilians.
Paternity_Deyla_080214_SI_1Genotypes of all individuals analyzed; inferred
genotypes of
malesPaternity_Deyla_100214_SI_1.docPaternity_Deyla_100214_SI_2Minimum
number of males and their relative contribution to each clutch
lower Purus River basin
Brazil