Recruitment variation of crappies in response to hydrology of Tennessee reservoirs

North American Journal of Fisheries Management
By: , and 

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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
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