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Recruitment variation of crappies in response to hydrology of Tennessee reservoirs

North American Journal of Fisheries Management

By:
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DOI: 10.1577/1548-8675(2002)022<1393:RVOCIR>2.0.CO;2

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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.

Additional Publication Details

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
Number of Pages:
6