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Physiological response of scup, Stenotomus chrysops, to a simulated trawl capture and escape event
DeAlteris, J.T.; La Valley, K.J. (1999). Physiological response of scup, Stenotomus chrysops, to a simulated trawl capture and escape event. Mar. Technol. Soc. J. 33(2): 25-34. https://dx.doi.org/10.4031/MTSJ.33.2.5
In: Marine Technology Society Journal. Marine Technology Society (MTS): Washington, D.C.. ISSN 0025-3324; e-ISSN 1948-1209, meer
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| Auteurs | | Top |
- DeAlteris, J.T.
- La Valley, K.J.
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| Abstract |
Scup (Stenotomus chrysops) were severely exercised by manual chasing for 6 min,and the clearance of lactate over a 12 hr period was evaluated. Lactate peaked from0.5 to 1.0 hr following exercise with concentrations ranging from 61.0 to 126.0mg/dL and returned to rested concentrations within 4 hr post-exercise.Concentrations of lactate in rested fish ranged from 5.2 to approximately 23.0mg/dL. Fish were observed for 10 days following exercise for delayed mortality. A100% survival of scup was observed with no significant difference between controland experimental populations. Based on the results of our investigations of lactaterecovery in scup following a simulated trawl capture and escape event, we believethat scup interacting with a bottom trawl and subsequently escaping, arephysiologically stressed by the event, but recover in less than 6 hr. All experimentallytreated fish survived both exhaustive exercise and prolonged swimming, suggestingencounter mortality is minimal. The results of this study do not address the effects of possible physical damage on escape or the effect of multiple encounters. |
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