Journal of the Royal Society
of New Zealand abstracts
Population genetic variability
and origin of Auckland Island feral pigs
Bin Fan1,2,
Jaime Gongora1,
Yizhou Chen1,
Olga Garkavenko3,
Kui Li2,
and Chris Moran1,*
1Centre
for Advanced Technologies in Animal Genetics and Reproduction
(Reprogen), Faculty of Veterinary Science, University of Sydney, NSW
2006, Australia.
2Laboratory
of Molecular Biology & Animal Breeding, College of Animal
Science and Technology, Huazhong Agricultural University, Wuhan 430070,
People’s Republic of China.
3Virology
Laboratory, Diatranz Ltd, Hunters Corner, Auckland, New Zealand.
*Author for correspondence.
chrism@vetsci.usyd.edu.au
Abstract Genetic
variability of pigs isolated on the remote Auckland Islands of New
Zealand was examined using 26 microsatellites recommended by the
International Society for Animal Genetics (ISAG) and the Food and
Agriculture Organisation (FAO) for porcine biodiversity analysis. The
diversity indices, including observed and effective numbers of alleles,
and observed and expected heterozygosity, revealed that Auckland Island
pigs have a low level of genetic variability compared with European,
Asian, Middle American indigenous and commercial pigs, as would be
expected for a small population isolated for up to 200 years.
Phylogenetic analyses of microsatellite data suggest that Auckland
Island feral pigs are more related to European pigs than Chinese pigs,
consistent with mitochondrial control region sequence analyses. In
addition, the UPGMA topology based on microsatellite allele sharing
measures showed that genotypes alone could accurately assign all
Auckland Island pigs to their correct population, and also that two
distinct Auckland Island subpopulations could be recognised.
Keywords genetic
variability; breed origin; population assignment; Auckland Island feral
pig; microsatellite
R05002; Received 20 December 2004;
accepted 22 April 2005; Online publication date 21 September 2005
Journal of the Royal Society
of New Zealand Volume 35, Number 3, September, 2005, pp 279–285
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