L. A. Collins

Age, growth and mortality of lane snapper {Lutjanus synagris) from the northern Gulf of Mexico (Port Aransas, Texas, to Panama City, Fla.) were examined. Otolith sections from 694 fish collected from January 1991 to December 1994 were used to develop growth information using 2 methods (direct proportion and regression) of back-calculation. Fish ranged in age from 2 to 17 years and their size ranged from 210 to 673 mm total length. Males grew slightly faster and were larger at age than females; however, the oldest (age 17 at 500 mm) and largest (673 mm at age 11) were females. Full...

The age-size structure of gray snapper (Lutjanus griseus) from Ft. Pierce, Florida, to Grand Isle, Louisiana, was examined. Otolith sections from 432 fish collected in 1991 to 1993 were used to compare 2 methods (direct proportion and regression) of back-calculation of size at age. The observed age range was 1 to 25 years and the size range was 236 to 764 mm total length. Differences were observed in back-calculated sizes at age between the 2 back-calculation methods, between sexes and geographic divisions. The back-calculated size at age was larger for ages 1 to 10 years from the direct...