Lumbering on land costs elephant seals dear
نویسندگان
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 کاملBreathing frequencies of northern elephant seals at sea and on land revealed by heart rate spectral analysis.
Elephant seals breathe episodically at sea and on land and surprisingly long apnoeas occur in both situations. An important difference is that recovery from apnoeic periods is much quicker at sea, which might be due, in part, to differences in the ventilatory response. Respiratory frequencies of juvenile northern elephant seals diving at sea and resting on land were estimated from time-frequenc...
متن کاملMaternal Traits and Reproductive Effort in Northern Elephant Seals
The aim of this study was to determine the effects of maternal traits on reproductive expenditure and energy delivery to the offspring in a capital breeder, the northern elephant seal (Mirounga angustirostris). Changes in maternal and offspring energy reserves and milk-energy delivery were examined in relation to maternal parturition mass, body composition, and age in females and pups breeding ...
متن کاملWater conservation in fasting northern elephant seals (Mirounga angustirostris).
Prolonged terrestrial fasting is a key element in the life history of elephant seals. While on land seals typically fast without access to fresh water, and thus must maintain positive water balance by reductions in water loss such that they can subsist primarily on metabolic water production (MWP). The terrestrial apnea demonstrated by seals may reduce respiratory evaporative water loss (REWL) ...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2018
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.189951