NDLI: Morphological characterization of striped seabream (Lithognathus mormyrus, Sparidae) in some Mediterranean lagoons

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Morphological characterization of striped seabream (Lithognathus mormyrus, Sparidae) in some Mediterranean lagoons

Content Provider	Semantic Scholar
Author	Hammami, Ibtissem Bahri-Sfar, Lilia Kaoueche, Myriam Grenouillet, Gaël Lek, Sovan Kara, Mohamed Hichem Hassine, Oum Kalthoum Ben
Copyright Year	2013
Abstract	La variabilite morphologique d'echantillons de Lithognathus mormyrus (Linnaeus, 1758), collectes dans six lagunes mediterraneennes, a ete analysee au moyen de 23 elements de truss et 11 mesures lineaires conventionnelles. Les analyses multivariees ont montre une discrimination morphologique, hautement significative, entre les echantillons du bassin occidental de la Mediterranee (lagunes de Bizerte, de Ghar El Melh et de Mellah) qui different les uns des autres mais se distinguent aussi des specimens lagunaires orientaux (lagunes d'El Biban, de Farwa et de Venise) par certaines variables qui sont liees a la longueur de la tete. Ainsi, les resultats obtenus ont fait ressortir la particularite des specimens de l'echantillon de la lagune de Mellah (Algerie) presentant des tetes petites. Cette divergence morphologique semble etre liee a differentes contraintes, representees par la strategie d'alimentation, et par la disponibilite, le type et la taille des proies ingerees. Les echantillons orientaux ont montre une tendance a se regrouper. Toutefois, des differences significatives, liees a la longueur du pedoncule caudal, ont ete decelees, et particulierement entre l'echantillon d'El Biban et ceux de Farwa et de Venise. Cette variation semble etre principalement liee a des contraintes hydrodynamiques. La divergence morphologique, entre les divers echantillons etudies, est suggeree comme etant ecologiquement induite (plasticite phenotypique).
Starting Page	127
Ending Page	139
Page Count	13
File Format	PDF HTM / HTML
Volume Number	37
Alternate Webpage(s)	http://gael.grenouillet.free.fr/publi_pdf/Hammami_2013_Cybium.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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