Goose barnacles hitchhike on satellite-tracked southern elephant seals
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چکیده
منابع مشابه
Beha Vior of Elephant Seals
Ct'tte etudt· porte sur certaines differenccs de comportements qui se sont etablies dcpuis que deux especes d'elephants dc mer se sont trouvees isolees, il la fin de la dernil'!re grandc glaciation. Les elephants de mer (Mirounga leonina) mAles, observes sur la Peninsule Valdes cn Argt'ntinc cmettent dcs cris de menace differentS de ceux des ele phants dc mer de I 'hemisphere boreal (M. angust...
متن کاملForaging Ecology of Northern Elephant Seals
Sexual segregation in foraging is predicted from the great size disparity of male and female northern elephant seals, Mirounga angustirostris. Our aim was to test this prediction by measuring diving and foraging behavior, foraging locations, and distribution of the sexes during biannual migrations in the northeastern Pacific Ocean. Daily movements of 27 adult males and 20 adult females, during ...
متن کاملMeasures of breeding inequality: a case study in southern elephant seals
Inequality in distribution of resources is a key aspect of evolutionary biology particularly in relation to distribution of mates and copulations. Notwithstanding its important role, inequality is not easily defined, and its measurement is complicated by theoretical and methodological issues. Although the formal treatment of inequality has been mostly limited to the evolution of lek mating syst...
متن کاملNew insights into the cardiorespiratory physiology of weaned southern elephant seals (Mirounga leonina)
Southern elephant seal (Mirounga leonina) pups must strike a balance between conserving energy during their post-weaning fast and simultaneously developing diving abilities to attain nutritional independence. Little is known about environmental influences on cardiorespiratory patterns, hence energy use, throughout the 6 week fast. Continuous heart rates were recorded for free-ranging, newly wea...
متن کاملThe implications of assuming independent tag loss in southern elephant seals
Survival and reproductive rate estimation requires following uniquely identified individuals through time, and many statistical models assume markings used to identify individuals are permanent. However, survival rates are underestimated when single marks are lost, since the models will effectively score those animals as dead. In order to account for mark loss, some researchers use a double-mar...
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ژورنال
عنوان ژورنال: Polar Biology
سال: 2009
ISSN: 0722-4060,1432-2056
DOI: 10.1007/s00300-009-0724-0