Document Detail


Characterizing the biological traits and life history of Acanthopagrus (Sparidae) hybrid complexes: implications for conservation and management.
MedLine Citation:
PMID:  23020560     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This study examined the spatio-temporal reproductive patterns, population structure, maturity and growth of Acanthopagrus hybrid complexes, which comprise mainly black bream Acanthopagrus butcheri and the hybrids they form with yellowfin bream Acanthopagrus australis, in two Australian estuaries (Coila and Brou Lakes, NSW). There were no differences between pure A. butcheri and hybrids in terms of their population structure, growth and maturity, suggesting that these two breeds have similar life histories and may therefore be managed as single, naturally cohesive units. Sexual variation in size structure was only observed for the complex in Coila Lake. Although there was significant variation in age structure between estuaries, both complexes exhibited dominance of only a few year classes indicating episodic recruitment and high fishing mortality. Acanthopagrus eggs occurred in higher numbers within upstream creek habitats compared to lake habitats, thereby highlighting the need to protect these spawning habitats. Although maturity in the complexes was not influenced by gender or estuary, differences in growth were detected between the genders and estuaries.
Authors:
F Ochwada-Doyle; D Roberts; C Gray; L Barnes; J Haddy; J Fearman
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-7
Journal Detail:
Title:  Journal of fish biology     Volume:  81     ISSN:  1095-8649     ISO Abbreviation:  J. Fish Biol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0214055     Medline TA:  J Fish Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1540-1558     Citation Subset:  -    
Copyright Information:
© 2012 The Authors. Journal of Fish Biology © 2012 The Fisheries Society of the British Isles.
Affiliation:
NSW Department of Primary Industries, Cronulla Fisheries Research Centre, P. O. Box 21, Cronulla, NSW 2230, Australia Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Science, University of New South Wales, NSW 2052, Australia Institute for Conservation Biology and Environmental Management, School of Biological Sciences, University of Wollongong, NSW 2552, Australia Australian Maritime College, Locked Bag 1399, Launceston, Tas 7250, Australia.
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