Nutritional condition of two coastal rocky fishes and the potential role of a marine protected area
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2014-11-09Type
research articleKeywords
Fatty acidsFish condition
marine protected areas
stable isotopes
stochastic phenomenon
storm
Abstract
Knowledge of the nutritional conditions of coastal commercial fish populations is
key to understanding stock health status, and is essential when making reasonable
exploitation and management plans. Here, we present the first results on the condition
and feeding preferences of two coastal fish species, Diplodus sargus (Linnaeus,
1758) and Pagellus erythrinus (Linnaeus, 1758). Using stable isotope and
biochemical analyses, we tested the potential effects of a marine protected area
(MPA) and the occurrence of a dramatic coastal storm on the condition and quality
of nutrition. The results suggest that both condition (lipids) and nutrition
quality (fatty acids, FAs) in P. erythrinus and D. sargus depend upon on food
availability in the area in which they were captured. Pagellus erythrinus individuals
inside the MPA stored higher quantities of lipids [46.73 19.00 lg lipid mg
organic matter (OM)
1] than those outside the MPA (15.63 5.30 lg lipid mg
OM
1) only before the ...
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