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Castoreum. Castoreum / k æ s ˈ t ɔːr i ə m / is a yellowish exudate from the castor sacs of mature beavers used in combination with urine to scent mark their territory. [1] [2]Both beaver sexes have a pair of castor sacs and a pair of anal glands, located in two cavities under the skin between the pelvis and the base of the tail. [3]
Beavers emit the chemical compound castoreum from their castor sacs. The sacs are located under the animal's tail and are secreted when they seek to communicate or mark their territory.
The Eurasian beaver (Castor fiber) or European beaver is a species of beaver widespread across Eurasia, with a rapidly increasing population of at least 1.5 million in 2020. The Eurasian beaver was hunted to near-extinction for both its fur and castoreum , with only about 1,200 beavers in eight relict populations from France to Mongolia in the ...
Beavers have two pairs of glands: castor sacs, which are part of the urethra, and anal glands. The castor sacs secrete castoreum, a liquid substance used mainly for marking territory. Anal glands produce an oily substance which the beaver uses as a waterproof ointment for its coat.
Beaver meat is similar tasting to lean beef, but care must be taken to prevent contamination from the animal's strong castor gland. It is usually slow-cooked in a broth, and was a valuable food source to Native Americans .
Castoroides (from Latin "castor" (beaver) and "oides" (like) [2]), or the giant beaver, is an extinct genus of enormous, bear-sized beavers that lived in North America during the Pleistocene. Two species are currently recognized, C. dilophidus in the Southeastern United States and C. ohioensis in most of North America.
The North American beaver (Castor canadensis) is an invasive species in Tierra del Fuego, at the southern end of Patagonia. Tierra del Fuego is a large island encompassing parts of Chile and Argentina , so that policies and actions to control the species have mainly been binational.
Both female and male beavers (Castor canadensis) have a pair of castor sacs and a pair of anal glands between the pelvis and tail. The physiology of the castor sac is unique to the beaver and contains an outer, vascular layer of connective tissue, a thicker layer of epithelial cells, and an inner packed layer of epithelial sheets. [18]