New Zealand Journal of Zoology abstracts
Genetic variation and hybridisation of black stilts (Himantopus
novaezelandiae) and pied stilts (H. h. leucocephalus), Order
Charadriiformes
BRENDA GREENE*
Victoria University of Wellington
P. O. Box 600
Wellington, New Zealand
*Present address: Auckland Regional Council,
Private Bag,
Auckland, New Zealand.
Abstract Isozyme electrophoresis was used to re-assess the
taxonomic status of the endangered black stilt (Himantopus
novaezelandiae) and the pied stilt (H. himantopus leucocephalus),
Order Charadriiformes, in New Zealand. A total of 28 loci was scored from 17
enzyme systems from a total of 115 birds (43 pied stilts, 53 hybrids and 19
black stilts). G-tests of the allele and genotype frequencies at the two
polymorphic loci (Mpi and Pgd) showed significant differences
when black stilts, hybrids and pied stilts were tested together, implying there
were two separate populations. Genetic distance between the two species (D =
0.006) was small, but the genetic data confirm that pied and black stilts are
distinct at the species level.
Keywords Isozyme electrophoresis; biodiversity;
introgression; population genetics; New Zealand
Z980031
Received 27 July 1998; accepted 18 May 1999
PDF file of entire paper: medium quality (2004K); (scanned from paper original: notes about this process)
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