Pubblicazione scientifica

Lack of multiple paternity in the oceanodromous tiger shark (Galeocerdo cuvier)

FILONE TECNOLOGICO	TEMA
produzione e cattura

RIASSUNTO

Multiple paternity has been documented as a reproductive strategy in both viviparous and ovoviviparous elasmobranchs, leading to the assumption that multiple mating may be ubiquitous in these fishes. However, with the majority of studies conducted on coastal and nearshore elasmobranchs that often form mating aggregations, parallel studies on pelagic, semi-solitary species are lacking. The tiger shark (Galeocerdo cuvier) is a large pelagic shark that has an aplacental viviparous reproductive mode which is unique among the carcharhinids. A total of 112 pups from four pregnant sharks were genotyped at nine microsatellite loci to assess the possibility of multiple paternity or polyandrous behaviour by female tiger sharks. Only a single pup provided evidence of possible multiple paternity, but with only seven of the nine loci amplifying for this individual, results were inconclusive. In summary, it appears that the tiger sharks sampled in this study were genetically monogamous. These findings may have implications for the genetic diversity and future sustainability of this population.

DATA

Data di pubblicazione: 17/01/2018

AUTORI

HOLMES BONNIE J
POPE LISA C
WILLIAMS SAMUEL M
TIBBETTS IAN R
BENNETT MIKE B
OVENDEN JENNIFER R

ENTE DI AFFERENZA

SCHOOL OF BIOMEDICAL SCIENCESY UNIV QUEENSLAND ST LUCIA QUEENSLAND 4072 AUSTRALIA
MOLECULAR FISHERIES LAB
DEPT AGRICULTURE & FISHERIES BRISBANE QUEENSLAND 4001 AUSTRALIA
INST SOCIAL SCIENCE RSCH UNIV QUEENSLAND LONG POCKET PRECINCT QUEENSLAND 4072 AUSTRALIA
SCHOOL OF BIOLOGICAL SCIENCES UNIV QUEENSLAND ST LUCIA QUEENSLAND 4072 AUSTRALIA

RIVISTA

Royal Society Open Science, 5(1), 171385

IMPACT FACTOR

2,680

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