[ La variabilité morphométrique et méristique des populations de sole pole (pegusa lascaris) de la zone Centrale Atlantique du Maroc ]
Volume 18, Issue 3, November 2016, Pages 846–856
Aziz CHAKOUR1 and Hassan EL OUIZGANI2
1 Lab. Océanographie & Halieutique, Faculté des sciences, Université Ibn Zohr, Agadir, Morocco
2 Lab. Océanographie & Halieutique, Faculté des sciences, Université Ibn Zohr, Agadir, Morocco
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This biometric study was made on four Moroccan populations of sand sole obtained from the main fishing ports of the Atlantic central area (Safi, Essaouira, Agadir and Ifni). A total of 252 individuals were taken from commercial captures. Seven meristics characters were counted and fourteen morphometrics parameters were measured to reveal possible geographical variations of this species. The test of Kruskal-Wallis shows a significant difference at 5 % for the four meristics values in whole sites. The morphometric treatment of variables by PCA shows a strong percentage of variance expressed by the first of three components. All the variables are correlated to the first main component, except the pre-orbital distance (LPO) and the pre-dorsal distance (LPD). The ascending linear discriminating analysis, confirms 90 % of classification of the individuals of the four stations, 9 of 14 characters morphometrics analyzed are discriminating. The morphometrics result in our Study area presents geographical variations of the population of sole pole.
Author Keywords: Sand sole, Pegusa lascaris, meristics characters, morphometrics variability, population, Atlantic central zone, Morocco.
Volume 18, Issue 3, November 2016, Pages 846–856
Aziz CHAKOUR1 and Hassan EL OUIZGANI2
1 Lab. Océanographie & Halieutique, Faculté des sciences, Université Ibn Zohr, Agadir, Morocco
2 Lab. Océanographie & Halieutique, Faculté des sciences, Université Ibn Zohr, Agadir, Morocco
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This biometric study was made on four Moroccan populations of sand sole obtained from the main fishing ports of the Atlantic central area (Safi, Essaouira, Agadir and Ifni). A total of 252 individuals were taken from commercial captures. Seven meristics characters were counted and fourteen morphometrics parameters were measured to reveal possible geographical variations of this species. The test of Kruskal-Wallis shows a significant difference at 5 % for the four meristics values in whole sites. The morphometric treatment of variables by PCA shows a strong percentage of variance expressed by the first of three components. All the variables are correlated to the first main component, except the pre-orbital distance (LPO) and the pre-dorsal distance (LPD). The ascending linear discriminating analysis, confirms 90 % of classification of the individuals of the four stations, 9 of 14 characters morphometrics analyzed are discriminating. The morphometrics result in our Study area presents geographical variations of the population of sole pole.
Author Keywords: Sand sole, Pegusa lascaris, meristics characters, morphometrics variability, population, Atlantic central zone, Morocco.
Abstract: (french)
Cette étude biométrique a été effectuée sur quatre populations Marocaines de sole pole de provenances des principaux ports de pêche de la zone Centrale Atlantique (Safi, Essaouira, Agadir, Ifni). Un total de 252 individus ont été prélevés à partir des captures commerciales. Sept caractères méristiques ont été comptés et quatorze paramètres morphométriques ont été mesurés afin de déceler d’éventuelles variations géographiques de l’espèce. Le test de Kruskal-Wallis indique une différence significative de 5% pour quatre valeurs méristique dans les quatre localités. Le traitement des variables morphométriques par ACP montre un fort pourcentage de variance expliqué par les trois premières composantes. Toutes les variables sont corrélées avec la première composante principale, sauf la distance pré-orbitale (LPO) et la distance pré-dorsale(LPD). L’analyse discriminante linéaire ascendante, confirme 90% de classification des individus des quatre stations, 9 des 14 caractères morphométriques analysés sont discriminants. Les résultats obtenus montrent que les caractères morphométriques dans la zone étudiée présentent des variations géographiques de la population de sole pole.
Author Keywords: Sole pole, Pegusa lascaris, caractères méristiques, variabilité morphométrique, population, La zone Centrale Atlantique, Maroc.
How to Cite this Article
Aziz CHAKOUR and Hassan EL OUIZGANI, “The morphometric and meristic variability of populations of sole pole (pegusa lascaris) of the Atlantic Central zone of Morocco,” International Journal of Innovation and Applied Studies, vol. 18, no. 3, pp. 846–856, November 2016.
