Wuenschel, Mark J. and Jugovich, Amelia R. and Hare, John A.
Estimating the Energy Density of Fish: The Importance of Ontogeny.
Transactions of the American FIsheries Society, 135,
Ontogenetic patterns in the percent dry weight (%DW) and energy density (joules per gram of wet weight) were studied in the early life stages of the subtropical estuarine and marine gray snapper Lutjanus griseus and the warmtemperate
estuarine and marine spotted seatrout Cynoscion nebulosus. The %DW was variable for individuals of both species but increased significantly through larval to juvenile stages (<20% for fish ,50 mm standard length to 20–30% for fish >50 mm). The lipid percentage, which was determined only for gray snapper, was also variable between individuals
but showed significant increase with body size. Strong
relationships between percent dry weight and energy density
were evident for both species; however, the slopes of
regressions were significantly lower than in general multispecies models, demonstrating the need for species- and stagespecific energy density data in bioenergetics models.
||Estimating the Energy Density of Fish: The Importance of Ontogeny
|Wuenschel, Mark J.|
|Jugovich, Amelia R.|
|Hare, John A.|
|Journal or Publication Title:
||Transactions of the American FIsheries Society
||United States National Ocean Service
Patti M. Marraro
||19 May 2009 16:25
||29 Sep 2011 19:39
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