Abstract:
:Domesticated brown trout Salmo trutta parr were subjected to increased, variable flow under controlled experimental conditions. Using geometric morphometric analyses, K ¯ (a mass-length index) and caudal fin area-body length ratio, this study assessed morphological responses in lateral body depth, growth and robustness and propulsive potential, respectively, of parr over the course of 32 weeks. Geometric morphometric analyses did not reveal an effect of exercise on either lateral body depth or caudal fin area. However, improved overall robustness and growth trajectories in exercised parr showed a positive adaptive response to the enriched habitat. Exercise and habitat heterogeneity thus have the potential to improve survivability of domesticated salmonids in the wild.
journal_name
J Fish Bioljournal_title
Journal of fish biologyauthors
Fenkes M,Shiels HA,Nudds RLdoi
10.1111/jfb.13772subject
Has Abstractpub_date
2018-08-01 00:00:00pages
360-369issue
2eissn
0022-1112issn
1095-8649journal_volume
93pub_type
杂志文章abstract::We report the effects of food deprivation on the early development of Pacific red snapper Lutjanus peru during the first days of development. The point of no return (PNR) was determined using the feeding incidence after a delay in first feeding. The gradual deterioration of the larvae during food deprivation was recor...
journal_title:Journal of fish biology
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