[Biology of the Rajidae from Tunisian coasts. XX. Raja clavata Linne, 1758. Weight of the body, liver and gonads. Liver and gonadal ratio. Coefficients of condition].

The body and liver growth-weight rate is faster in the subadults ones that in the youngs and the adults whatever the sex, as gonads growth-weight rate in the males and nidamental glands in the females; ovaries growth-weight rate is, at the contrary more important in the adults ones. In all individuals during growth or along the year, the variation of cubic and relative of condition ane subjected to liver, gonads and ponderal changes. The part of ecological factors and diet are not to be important but seems more difficult to point out.