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Cybium,
Revue
Internationale dIchtyologie |
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NOTE ICHTYOLOGIQUE Capture
of a pregnant female white shark, Carcharodon carcharias (Lamnidae)
in the Gulf of Gabès (southern Tunisia, central Mediterranean)
with comments on oophagy in sharks Béchir SAÏDI (1), Mohamed Nejmeddine BRADAÏ (1), Abderrahman BOUAÏN (2), Olivier GUÉLORGET (3) & Christian CAPAPÉ (3) (1) Institut
national des sciences et technologies de la mer, Centre de Sfax, BP 1035,
3018 Sfax, TUNISIA. Abstract.
- A pregnant female white shark, Carcharodon carcharias, was
captured by a tunny boat in the Gulf of Gabès (southern Tunisia,
central Mediterranean), on 26 February 2004. The four developing embryos,
three females and one male, ranged between 132 and 135 cm total length
and weighed between 27.65 and 31.50 kg. The embryos exhibited a distended
abdomen due to yolk accumulation. This confirms that the species is oophagous.
Oophagy during embryonic development is commented, with emphasis on white
shark, porbeagle, Lamna nasus, shortfin mako, Isurus oxyrhinchus
and bigeye threshershark, Alopias superciliosus. |
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