Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
作者： W C Oosthuizen , M N Bester , P JN de Bruyn , G JG Hofmeyr
DOI: 10.2989/AJMS.2009.31.3.20.1008
关键词:
摘要: During three summer surveys at Prince Edward Island (PEI), southern Indian Ocean (2001, 2004 and 2008), 416 elephant seals Mirounga leonina were inspected for identification tags. In all, 42 that had been tagged as weaned pups their natal site found on Marion (MI), 38 of which could be individually identified by resighting tag numbers. The majority the MI-tagged yearlings or subadults, all but one hauled out PEI annual moult. attendance rate known individuals island during moult was only 40%, based histories. This significantly lower than 77 ± 6% estimated a random MI population sample drawn from same cohorts (based 10 000 replications). Annual resight probabilities (considering haulout phases) 58% per annum seen PEI, 80 4% simulation. Seasonal absences violate ‘homog...
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