Morphometric variations in white seabream Diplodus sargus (Linneus, 1758) populations along the Tunisian coast

• Autorzy: Kaouèche M. , Bahri-Sfar L. , Hammami I. , Hassine O. K. B.

Identyfikatory

DOI

10.1016/j.oceano.2016.10.003

• Języki publikacji: EN

Abstrakty

EN

Morphometric characters of the white seabream Diplodus sargus (Linnaeus 1758) were compared among samples collected from six marine and lagoon sites along the Tunisian coast to elucidate the impact of the geographical barrier of the Siculo-Tunisian Strait and/or the lagoon environment in the morphological variation among the Tunisian white seabream population. Two morphometric descriptors (twenty-five Truss elements and six traditional measurements) were used to study the pattern of this morphological variation. Univariate analysis of variance revealed significant differences (P < 0.001) for both traditional and Truss variables. Multivariate analysis using the two morphometric descriptors detected a clear variation in the body shape between D. sargus populations along the Tunisian coast. All these analyses showed the distinctness of the sample from El Biban lagoon compared to the remaining ones. This discrimination was due to the head and the peduncle of the studied fish. Varying degrees of differences were also observed between northern and southern samples, and between the lagoon and the marine samples. The morphological variations of the head explain also the discrimination between the different lagoons samples. Observed morphological heterogeneity seems to be related to the impact of ecological factors.

Słowa kluczowe

EN

morphometric variation; Diplodus sargus; Siculo-Tunisian Strait; ecological features

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2017
• Tom: No. 59 (2)
• Strony: 129--138
• Opis fizyczny: Bibliogr. 65 poz., rys., tab.

Twórcy

autor

Kaouèche M.

• Département de Biologie, Unité de Recherche Biologie Intégrative et Ecologie Fonctionnelle et Evolutive des milieux Aquatiques, UR11ES08, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunisia

autor

Bahri-Sfar L.

• Département de Biologie, Unité de Recherche Biologie Intégrative et Ecologie Fonctionnelle et Evolutive des milieux Aquatiques, UR11ES08, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunisia

autor

Hammami I.

• Département de Biologie, Unité de Recherche Biologie Intégrative et Ecologie Fonctionnelle et Evolutive des milieux Aquatiques, UR11ES08, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunisia

autor

Hassine O. K. B.

• Département de Biologie, Unité de Recherche Biologie Intégrative et Ecologie Fonctionnelle et Evolutive des milieux Aquatiques, UR11ES08, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunisia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).