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Morphometric characters of the Mediterranean rough ray, Raja radula (Chondrichthyes: Rajidae) in the Gulf of Gabes (Tunisia, Central Mediterranean)

February 16, 2014

To determine some morphometric characters of the Mediterranean rough ray Raja radula Linnaeus, 1758 which inhabits shallow and
deep waters in the Gulf of Gabes (Tunisia), Raja radula were collected and described on data from the commercial trawl, longline and demersal gillnets fisheries at monthly intervals between December 2006 and January 2007. A total of 550 females and 400 males were collected and various morphometric characters were measured. Relationships between the characters were defined separately for males and females. Morphometric characters were strongly correlated with total length but the nature of allometry differed according to the characters and were defined separately for males and females. Having information about the relationship between the variables presented here would enable researchers to estimate the approximate size of a ray R. radula. This study aimed to investigate the relationships between the morphometric characters and total length were defined separately for males and females and meristic counts were carried of these species along the Gabes coast. In terms of maps of the population distribution were drawn.

Kardi H, Marouani S, Nejmeddine Bradai M, Bouaïn A, Morize E, 2014: Morphometric characters of the Mediterranean rough ray, Raja radula (Chondrichthyes: Rajidae) in the Gulf of Gabes (Tunisia, Central Mediterranean), International Journal of Science and Knowledge, 3(1), 34-41. Article.

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