Factors affecting the post-release survival of cultured juvenile Pseudopleuronectes americanus

Autor:	W. H. Howell, Elizabeth A. Fairchild
Rok vydání:	2004
Předmět:	Post release biology Ecology Crypsis Pseudopleuronectes Zoology Winter flounder Juvenile Aquatic Science biology.organism_classification Predator Ecology Evolution Behavior and Systematics Predation
Zdroj:	Journal of Fish Biology. 65:69-87
ISSN:	1095-8649 0022-1112
DOI:	10.1111/j.0022-1112.2004.00529.x
Popis:	Laboratory experiments were performed with cultured and wild juvenile winter flounder Pseudopleuronectes americanus to evaluate differences in behaviour and adaptation affecting post-release vulnerability to predation. Studies revealed that the cryptic abilities of cultured winter flounder increased over time. Sediment-naive, cultured fish required a minimum of 2 days to improve their burying skills and at least 90 days for colour adaptation to match the sediment. Cultured winter flounder selected sediments consisting of small grains and colours matching their own pigment. Cultured winter flounder, regardless of their colour, were significantly more vulnerable to predation by birds. Additionally, cultured fish reacted differently than wild winter flounder when exposed to cues from a potential predator.
Databáze:	OpenAIRE
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