Document Detail


Effects of hatchery rearing on Florida largemouth bass Micropterus floridanus resource allocation and performance under semi-natural conditions.
MedLine Citation:
PMID:  25257181     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This study examined the growth, activity, metabolism and post-release survival of three groups of Florida largemouth bass Micropterus floridanus: wild-caught fish, hatchery fish reared according to standard practice (hatchery standard) and hatchery fish reared under reduced and unpredictable food provisioning (hatchery manipulated). Hatchery-standard fish differed from wild-caught fish in all measured variables, including survival in semi-natural ponds. Hatchery-standard and hatchery-manipulated fish showed higher activity levels, faster growth and lower standard metabolic rates than wild-caught fish in the hatchery. Fish reared under the manipulated feeding regime showed increased metabolic rates and increased post-release growth, similar to wild-caught fish. Their activity levels and post-release survival, however, remained similar to those of hatchery-standard fish. Activity was negatively correlated with post-release survival and failure of the feed manipulation to reduce activity may have contributed to its failure to improve post-release survival. Activity and post-release survival may be influenced by characteristics of the rearing environment other than the feeding regime, such as stock density or water flow rates.
Authors:
T M Garlock; C T Monk; K Lorenzen; M D Matthews; C M St Mary
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-25
Journal Detail:
Title:  Journal of fish biology     Volume:  -     ISSN:  1095-8649     ISO Abbreviation:  J. Fish Biol.     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-26     Completed Date:  -     Revised Date:  2014-9-27    
Medline Journal Info:
Nlm Unique ID:  0214055     Medline TA:  J Fish Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 The Fisheries Society of the British Isles.
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