Ontogeny of functional morphology and quality criteria in larvae and juveniles of common Dentex dentex (L.1758), under rearing conditions
Abstract
THE ONTOGENY OF DENTEX DENTEX WAS STUDIED FROM FERTILISATION TO THE JUVENILE STAGE. DURING THE EXOTROPHIC PHASE THE STUDY WAS PERFORMED COMPARATIVELY UNDEREXTENSIVE AND SEMI-EXTENSIVE REARING CONDITIONS. IT INCLUDED THE DEVELOPMENTOF MORPHOLOGY, PIGMENTATION, ALLOMETRIC GROWTH OF THE BODY, BEHAVIOUR, GROWTHAND SCALES. ADDITIONALLY, THE MORPHO-ANATOMICAL ABNORMALITIES WHICH WERE PRESENTED DURING THE REARING TRIALS WERE RECORDED AND STUDIED IN RELATION TO THEIR DEVELOPMENT, THEIR EFFECTS ON THE MORPHOLOGY OF THE INDIVIDUALS, AND THE EFFECTS OF REARING CONDITIONS ON THEM. THE DEVELOPMENT OF D. DENTEX CAN BE SERIOUSLY AFFECTED BY THE REARING CONDITIONS APPLIED DURING THE EARLY EXOGENOUS PHASE, IN RESPECT TO THE ALLOMETRIC GROWTH OF THE FISH, AS WELL AS IN RESPECT TO THE DEVELOPMENT OF MORPHOLOGICAL ABNORMALITIES AND OSTEOLOGICAL DEFORMITIES. THE RESULTS ARE DISCUSSED IN RESPECT TO THEIR USE IN THE ELIMINATION OF OSTEOLOGICAL DEFORMITIES AND IN THE ESTABLISHMENT OF D. DENTEX ...
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