Stress and Social Hierarchy Rank in Coho Salmon

@article{citeulike:1689874, abstract = {Abstract.—Dominance hierarchy was monitored over a 2-week period in triplicated groups of six parr of coho salmon (Oncorhynchus kisutch) by recording a variety of behavioral activities. Indices of stress were subsequently determined and compared with dominance statuses. Social position fell into three main categories: (1) the dominant fish; (2) two or three intermediate fish; and (3) two or three subordinate fish. Plasma cortisol concentration, interrenal nuclear diameter, and tail-beat frequency were lowest in the dominant fish and highest in the subordinate fish. Fish held alone had levels of plasma cortisol, interrenal nuclear size, and tail-beat frequency similar to those of the dominant fish. Hepatic glycogen varied directly with social position. It is plausible that dominance status is inversely related to a low-level, chronic state of stress in the fish, the dominant individuals being the least stressed.}, author = {Ejike, Chiweyite and Schreck, Carl B. }, citeulike-article-id = {1689874}, journal = {Transactions of the American Fisheries Society}, keywords = {dominance, fish, physiology, stress}, pages = {423--426}, posted-at = {2007-09-24 17:16:28}, priority = {2}, title = {Stress and Social Hierarchy Rank in Coho Salmon}, volume = {109}, year = {1980} }

TY - JOUR ID - citeulike:1689874 L3 - citeulike-article-id:1689874 TI - Stress and Social Hierarchy Rank in Coho Salmon JF - Transactions of the American Fisheries Society VL - 109 SP - 423 EP - 426 N2 - Abstract.—Dominance hierarchy was monitored over a 2-week period in triplicated groups of six parr of coho salmon (Oncorhynchus kisutch) by recording a variety of behavioral activities. Indices of stress were subsequently determined and compared with dominance statuses. Social position fell into three main categories: (1) the dominant fish; (2) two or three intermediate fish; and (3) two or three subordinate fish. Plasma cortisol concentration, interrenal nuclear diameter, and tail-beat frequency were lowest in the dominant fish and highest in the subordinate fish. Fish held alone had levels of plasma cortisol, interrenal nuclear size, and tail-beat frequency similar to those of the dominant fish. Hepatic glycogen varied directly with social position. It is plausible that dominance status is inversely related to a low-level, chronic state of stress in the fish, the dominant individuals being the least stressed. KW - dominance KW - fish KW - physiology KW - stress AU - Ejike, Chiweyite AU - Schreck, Carl PY - 1980/// ER -