CHARLES-DOMINIQUE: CATCH EFFICIENCIES OF PURSE AND BEACH SEINES 



Table 6. — Estimation of the catchability relative to the purse seine by the method "from 

 captures" (c, = purse seine captures; N, = standing stock; q, = catchability %; C = 

 beach seine catches: W = beach seine retention rate). 



Table 7. — Estimation of the catchability by the purse seine by the 

 method '1rom recaptures" {m, = marked fish; r, = recaptured fish; q, 

 = catchability, as a percentage). 



917 



