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Differential Response to Handling Stress by Florida, Northern, and Hybrid Largemouth Bass
Author(s) -
Williamson J. Holt,
Carmichael Gary J.
Publication year - 1986
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1986)115<756:drthsb>2.0.co;2
Subject(s) - bass (fish) , fishery , fight or flight response , differential (mechanical device) , environmental science , biology , engineering , biochemistry , gene , aerospace engineering
Two electrophoretically identified parental strains of largemouth bass representing Micropterus salmoides salmoides, the northern, and M. s. floridanus, the Florida, subspecies and their reciprocal F 1 hybrids were examined for responses to 12–24 h of net confinement. No differences in plasma glucose or chloride concentrations were observed in quiescent fish among the four strains grown in separate ponds to 78–120 g. Florida and hybrid largemouth bass had significantly higher plasma glucose and lower plasma chloride values after 24 h of confinement than northern strain fish. The Florida and one hybrid strain began to die before net confinement ended. Florida fish were the least tolerant of all strains to net confinement regardless of rearing or experimental conditions. After 7 d recovery from net confinement, 12% of the Florida fish were alive compared to 96% of northern fish and 31–81% of the hybrids.