A comparison of diversity in the zfy gene in two species of pinnipeds with different breeding strategies
Year: 2006
Type: dissertation
Abstract: Sequence variation was examined for the Zinc-finger Y (zfy) gene and the\nmitochondrial control region for two species of pinnipeds, the Steller sea lion\n(Eumetopias jubatus) and harbor seal (Phoca vitulina). The two species differ in aspects\nof their breeding strategies, dispersal, and life histories. Comparable stock sample sizes\nof males from each species were taken from localities that span at least one wellrecognized\nphylogeographic stock as defined by mtDNA markers. Variation in zfy, a\nstrictly paternally inherited marker located on the Y chromosome, was low in both\nspecies. An interesting pattern of subdivision was found for zfy in harbor seals that was\nconcordant with population subdivision for mtDNA. In Steller sea lions, no such\nconcordant pattern was evident with only a single rare zfy variant being observed. One\nexplanation for the different patterns observed is that dispersal is less in male harbor\nseals than in male Steller sea lions.
Author: Jason Michael Sweny
Language: English
Subfield: Genetics
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2277628544