Feeding habits of four fish species (Diplodus annularis, Scorpaena porcus, Scorpaena
notata, and Serranus cabrilla) caught on the Loano artificial reef were studied to assess
the role played by the reef in their diet. Samples were obtained either by spear fishing
on the reef or by a trammel net in the surrounding area. Diet composition in terms of
decapods and amphipods (constituting the main prey groups) was compared with the
species composition within these taxa present on the reef and on surrounding bottoms
sampled using various techniques (e.g. suction sampling and grabs). S. porcus and S.
notata caught with trammel nets feed very little on reef species (only 5% and 6%,
respectively, of individuals belonging to species common to stomach contents and the
blocks). The specimens of S. notata and S. cabrilla, caught by spear fishing on the
blocks forming the reef, prove to be more closely related to the artificial structures,
with 58% and 78%, respectively, of individuals belonging to species common to both.
D. annularis feeds on a wider spectrum of species that are almost all present on the reef
blocks (91%).
Feeding habits of four fish species (Diplodus annularis, Scorpaena porcus, Scorpaena
notata, and Serranus cabrilla) caught on the Loano artificial reef were studied to assess
the role played by the reef in their diet. Samples were obtained either by spear fishing
on the reef or by a trammel net in the surrounding area. Diet composition in terms of
decapods and amphipods (constituting the main prey groups) was compared with the
species composition within these taxa present on the reef and on surrounding bottoms
sampled using various techniques (e.g. suction sampling and grabs). S. porcus and S.
notata caught with trammel nets feed very little on reef species (only 5% and 6%,
respectively, of individuals belonging to species common to stomach contents and the
blocks). The specimens of S. notata and S. cabrilla, caught by spear fishing on the
blocks forming the reef, prove to be more closely related to the artificial structures,
with 58% and 78%, respectively, of individuals belonging to species common to both.
D. annularis feeds on a wider spectrum of species that are almost all present on the reef
blocks (91%).
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