Recruitment variation of crappies in response to hydrology of Tennessee reservoirs
North American Journal of Fisheries Management
By: S.M. Sammons, P.W. Bettoli, D.A. Isermann, and T.N. Churchill
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Abstract
Black crappies Pomoxis nigromaculatus and white crappies P. annularis were sampled to index recruitment in seven Tennessee reservoirs (four main-stem and three tributary storage impoundments). Crappie recruitment in tributary storage impoundments appeared to be consistently higher in years of high discharge during the prespawn period (1 January-31 March). A similar relation was found in one main-stem impoundment; however, crappie recruitment in two main-stem impoundments was inversely related to discharge during the spawning period (1 April-30 May), and little recruitment variation was found in the fourth main-stem impoundment. In general, reservoir hydrology appeared to have a stronger effect on crappie recruitment in tributary storage impoundments than in main-stem impoundments, possibly because recruitment was more variable in tributary systems. Thus, it is likely that crappie populations will rarely have strong year-classes simultaneously over a wide geographic area or even within a single watershed.
Suggested Citation
Sammons, S., Bettoli, P., Isermann, D., and Churchill, T., 2002, Recruitment variation of crappies in response to hydrology of Tennessee reservoirs: North American Journal of Fisheries Management, v. 22, no. 4, p. 1393-1398, https://doi.org/10.1577/1548-8675(2002)022<1393:RVOCIR>2.0.CO;2.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Recruitment variation of crappies in response to hydrology of Tennessee reservoirs |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1577/1548-8675(2002)022<1393:RVOCIR>2.0.CO;2 |
| Volume | 22 |
| Issue | 4 |
| Year Published | 2002 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 1393 |
| Last page | 1398 |