Morphological Abnormalities in Rajidae Species (Chondrichthyes) From the Gulf of Gabès (Tunisia, Central Mediterranean Sea): What Causes?
Received Date: December 19, 2018; Published Date: January 04, 2019
This study reports the occurrence of morphological abnormalities in four Rajidae specimens caught by a commercial trawler in the Gulf of Gabès (Tunisia, Central Mediterranean Sea): absence of tail and asymmetric pectoral fins in a female of the thornback ray Raja clavata Linnaeus, 1758 and absence of the caudal and dorsal fins in two female Raja clavata specimens and in one female Raja radula Delaroche, 1809 specimen. These cases of abnormality were described, commented and discussed.
Keywords: Raja clavate; Raja radula; Morphological abnormalities; Rajidae; Gulf of gabès; Central mediterranean sea