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4 results for “pseudorca crassidens”
Survival, fecundity and reproductive tissue data from false killer whales (Pseudorca crassidens)
<p>These data come from specimens from false killer whales from combined strandings (South Africa, 1981) and harvest (Japan 1979-80). The South African material was collected from 65 false killer whales that stranded en masse on the west coast of the Western Cape Province. Scientists reached the site two days after the stranding event was reported, so the material was not fresh and fixation of tissue samples was suboptimal. Data are available from 41 (including 32 mature) females. The Japanese material (96 females, 57 mature) originated from 6 schools harvested during shore-drive fisheries operations at Iki Island. In each case, as many false killer whales as possible were randomly examined. Data presented here come from 91 females if which 89 were mature. The Japanese and South African data were combined to estimate survival, but fecundity information is available for each separately. These data are associated with the following publication: Theoni Photopoulou, Ines M. Ferreira, Peter B. Best, Toshio Kasuya and Helene Marsh. 2017. Evidence for a postreproductive phase in female false killer whales <em>Pseudorca crassidens. </em>Frontiers in Zoology. 14:30. DOI 10.1186/s12983-017-0208-y</p>
On following pages: 25. Long-finned Pilot Whale (Globicephala melas); 26. Short-finned Pilot Whale (Globicephala macrorhynchus); 27. Pygmy Killer Whale (Feresa attenuata); 28. Risso's Dolphin (Grampus griseus); 29. Melonheaded Whale (Peponocephala electra); 30. False Killer Whale (Pseudorca crassidens). in Delphinidae
On following pages: 25. Long-finned Pilot Whale (Globicephala melas); 26. Short-finned Pilot Whale (Globicephala macrorhynchus); 27. Pygmy Killer Whale (Feresa attenuata); 28. Risso's Dolphin (Grampus griseus); 29. Melonheaded Whale (Peponocephala electra); 30. False Killer Whale (Pseudorca crassidens).
Data from: Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)
False killer whales (Pseudorca crassidens) are large Delphinids typically found in deep water far offshore. However, in the Hawaiian Archipelago there are two resident island-associated populations of false killer whales, one in the waters around the main Hawaiian Islands (MHI) and one in the waters around the Northwestern Hawaiian Islands (NWHI). We use mitochondrial DNA (mtDNA) control region sequences and genotypes from 16 nuclear (nucDNA) microsatellite loci from 206 individuals to examine levels of differentiation among the two island-associated populations and offshore animals from the central and eastern North Pacific. Both mtDNA and nucDNA exhibit highly significant differentiation between populations, confirming limited gene flow in both sexes. The mtDNA haplotypes exhibit a strong pattern of phylogeographic concordance, with island-associated populations sharing three closely related haplotypes not found elsewhere in the Pacific. However, nucDNA data suggests that NWHI animals are at least as differentiated from MHI animals as they are from offshore animals. The patterns of differentiation revealed by the two marker types suggest that the island-associated false killer whale populations likely share a common colonization history, but have limited contemporary gene flow.
Data from: Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)
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