The gross anatomy, cellular structure, and fatty acid composition of adipose tissue in captive polar bears (Ursus maritimus)
Abstract 10.1002/zoo.1430120304.abs The gross anatomy, microscopic structure, and fatty acid composition of adipose tissue in four elderly polar bears (Ursus maritimus), that had each been in captivity for more than 24 years, were compared with that of young wild specimens. Total dissections were performed on two specimens. In both, the proportion of adipose tissue in […]
Tail skin temperatures reflect coping styles in rats
This study was carried out to elucidate the predictive value of tail skin temperatures (TSTs) assessed in naïve rats as a non-invasive pre-experimental method of classification of coping style. Male Lewis rats were classified according to tail skin temperatures (TST), and relative size within cage-groups. TSTs were monitored over two-hour periods following exposure to physical […]
Morphological aspects of the heart of the northern rockhopper penguin (Eudyptes chrysocome moseleyi): possible implication in diving behavior and ecology?
We compared the heart morphology of the small, deep-diving northern rockhopper penguin to the hearts of small, shallow-diving and large, deep-diving penguin species. The rockhopper penguin had a heart larger than expected for its body mass, and its heart weight/body weight was significantly greater than in the larger Adélie penguin. We found the rockhopper’s right […]
Two-dimensional echocardiographic anatomy of the snake heart (Python molurus bivittatus)
Two-dimensional echocardiography was performed on Burmese pythons (Python molurus bivittutus) to determine an optimal echocardiographic imaging technique for snakes and to describe the echocardio- graphic anatomy of the snake heart. Five snakes immobilized with tiletamine/zolazepam and main- tained on isoflurane in oxygen were imaged in dorsal recumbency. The portion of the snake’s body containing the […]