WENNER ET AL.: LIFE HISTORY OF BLACK SEA BASS 



Table 13.— Summary of Petersen mark-recapture population estimates, biomass, and density (number and kg/ha) estimates 

 for black sea bass, Centropristis striata, on two sponge-coral habitat sites. 95% confidence limits (C.L.) of p(= RIC) were 

 determined by the methods of Cochran (1977). 



'Adjusted Petersen estimate (Ricker 1975). 



fishes to the populations was greatly reduced (Fig. (Fig. 12). Fishes age 4 and older went from 42% of 

 11). Mean age declined 0.5 years at site 1, and the the population in 1981 to 25% in 1982 and 9% in 

 age composition shifted towards younger age classes 1983. 



20 



15- 



10- 



5- 



20-i 



Site 2, 1883 

 x TL-=24cm 



1 I I I I I I I I I I I I i I I i I i r 

 20 25 30 35 40 



TOTAL LENGTH(cm) 



Figure 11.— Size-frequency distribution of 

 Centropristis striata from five discrete mark- 

 recapture tagging studies. 



737 



