Feeding behavioure is influenced by the �ontogeny of digestive system and eye in greater Amberjack (Seriola dumerili), Meagre (Argyrosomus regius), and common Dentex (Dentex dentex
Abstract
Τhe ontogeny of the digestive and the vision system was examined along with the
plasticity of their related organs in three farmed species - meagre (Argyrosomus
regius), greater amberjack (Seriola dumerili) and common dentex (Dentex dentex).
The main objective of this study was to provide enhanced rearing protocols for a
better biological and productive performance. All species were reared with mesocosm
technology.
The comparison of the two systems (digestive and vision) has shown that
meagre has higher ontogeny rates than that of the other two species. The percentage
of fat deposits on the liver, as an indicator for feeding malnutrition, had lower values
for meagre, compared to these of common dentex and greater amberjack. The above
statement is closely related to the feeding protocol used as well as to the ontogenetic
rate of the digestive system. Considering the photopic sensitivity, common dentex
presented the highest value, followed by greater amberjack and meagre.
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