Abundance and mtDNA differentiation of humpback whales (Megaptera novaeangliae) in the Shumagin Islands, Alaska

作者: Briana H Witteveen , Janice M Straley , Olga von Ziegesar , D Steel , C Scott Baker

DOI: 10.1139/Z04-120

关键词: Population structureSkin tissueBiologyCetaceaGeographic distributionAbundance (ecology)FisheryPacific ocean

摘要: Despite extensive research on humpback whales (Megaptera novaeangliae (Borowski, 1781)) in parts of the North Pacific, little has focused feeding coastal waters west Kodiak Island Gulf Alaska. To extend westward small-boat surveys were conducted near Shumagin Islands during summers 1999–2002. Photographs natural markings collected, representing 413 sightings 171 individual whales. Small samples skin tissue collected from 20 individuals, including two mother–calf pairs, for sex identification and comparison mtDNA haplogroups with previously published results other regions Pacific. Individual photographs used mark–recapture analysis to estimate abundance region. The best was given by a modified Jolly–Seber method: N = 410 (95% CI: 241–683) 2002. Comparison archived photographs...

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