188 juveniles sampled in four Italian commercial hatcheries and 66 wild fry were examined to identify anomalies in vertebral axis, vertebrae, fins and swim bladder and the presence of calculi in urinary ducts. Anomaly data were submitted to X square test and multidimensional analysis techniques. Fry quality : 41 classes of anomalies were observed among the five populations. CA analysis was used to identify the presence of a functional swim bladder as the main descriptor to assess fry quality. PCA analysis showed interrelationships between the absence of functional swim bladder and some of the 41 classes of anomalies. The populations subjected to analysis were found to be characterized by different classes of anomalies. In detail, with respect to anomaly occurrences and fry origin, X2 test have identified 1 class of anomalies characterizing each population. Also Dynamic Cloud Analysis has confirmed the presence of five predictive classes for the five populations, with different rates of belonging for each considered population. Only wild fry, characterized by the absence of swim bladder anomalies and by the lowest occurrence of skeletal anomalies, resulted to belong totally (100 % of individuals) to a sole predictive class. Consequently, the proportion of belonging of hatchery fry to a "wild-type" predictive class could be considered as a useful criteria to define seed quality.

Boglione, C., Marino, G., Ferreri, F., Finoia, M.g., Scardi, M., Fresi, E., et al. (1994). Anatomical aspects for seed quality assessment in sea bass (Dicentrarchus labrax): hatchery and wild populations.. In P. Kestemont, J. Muir, F. Sevila, & P. Williot (a cura di), MEASURES FOR SUCCESS: METROLOGY AND INSTRUMENTATION IN AQUACULTURE MANAGEMENT (pp. 191-197). 92162 ANTHONY CEDEX : CEMAGREF EDITIONS.

Anatomical aspects for seed quality assessment in sea bass (Dicentrarchus labrax): hatchery and wild populations.

BOGLIONE, CLARA;SCARDI, MICHELE;FRESI, EUGENIO;CATAUDELLA, STEFANO
1994

Abstract

188 juveniles sampled in four Italian commercial hatcheries and 66 wild fry were examined to identify anomalies in vertebral axis, vertebrae, fins and swim bladder and the presence of calculi in urinary ducts. Anomaly data were submitted to X square test and multidimensional analysis techniques. Fry quality : 41 classes of anomalies were observed among the five populations. CA analysis was used to identify the presence of a functional swim bladder as the main descriptor to assess fry quality. PCA analysis showed interrelationships between the absence of functional swim bladder and some of the 41 classes of anomalies. The populations subjected to analysis were found to be characterized by different classes of anomalies. In detail, with respect to anomaly occurrences and fry origin, X2 test have identified 1 class of anomalies characterizing each population. Also Dynamic Cloud Analysis has confirmed the presence of five predictive classes for the five populations, with different rates of belonging for each considered population. Only wild fry, characterized by the absence of swim bladder anomalies and by the lowest occurrence of skeletal anomalies, resulted to belong totally (100 % of individuals) to a sole predictive class. Consequently, the proportion of belonging of hatchery fry to a "wild-type" predictive class could be considered as a useful criteria to define seed quality.
Settore BIO/07
English
Rilevanza internazionale
Articolo scientifico in atti di convegno
On a examiné les anomalies de l'axe vertébral, des vertèbres, des nageoires, de la vessie natatoire ainsi que la présence de calculs dans les conduits urinaires de deux échantillons, l'un portant sur 188 individus provenant de 4 écloseries commerciales italiennes, l'autre sur 66 alevins sauvages. Les données, ont été soumises au test du X² et à une analyse multidimensionnelle. Parmi les 5 populations on a trouvé 41 classes d'anomalies. L'analyse des correspondances a été utilisée pour identifier la présence d'une vessie natatoire fonctionnelle comme principal descripteur afin d'évaluer la qualité des alevins. L'analyse des composantes principales montre des interrelations entre l'absence de vessie natatoire fonctionnelle et certaines des 41 classes d'anomalies. Les populations soumises à l'analyse sont caractérisées par différentes classes d'anomalies. Ainsi l'analyse des nuées dynamiques a confirmé l'existence de 5 classes prédictives pour les 5 populations, avec différents taux de dépendance pour chacune des populations considérées. Seuls les alevins sauvages, caractérisés par l'absence de vessie natatoire anormale et par la plus faible présence d'anomalies du squelette appartiennent (100 % des individus) à une unique classe prédictive. En conséquence, la proportion d'alevins d'écloserie appartenant au type de prédiction "sauvage" pourrait être considérée comme un critère utile à la définition de la qualité des semences
QUALITY; EVALUATION
DICENTRARCHUS LABRAX; QUALITE; EVALUATION; SQUELETTE; ANORMALITE;
https://core.ac.uk/display/14309866
Boglione, C., Marino, G., Ferreri, F., Finoia, M.g., Scardi, M., Fresi, E., et al. (1994). Anatomical aspects for seed quality assessment in sea bass (Dicentrarchus labrax): hatchery and wild populations.. In P. Kestemont, J. Muir, F. Sevila, & P. Williot (a cura di), MEASURES FOR SUCCESS: METROLOGY AND INSTRUMENTATION IN AQUACULTURE MANAGEMENT (pp. 191-197). 92162 ANTHONY CEDEX : CEMAGREF EDITIONS.
Boglione, C; Marino, G; Ferreri, F; Finoia, Mg; Scardi, M; Fresi, E; Cataudella, S
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/170071
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