Geoffrey C. Laurence

Life History Studies Of The Alabama Shad, Alosa Alabamae, In The Apalachicola River, Florida

Since information on the biology of the Alabama shad, Alosa alabamae, of the Gulf coast of the United States is almost nonexistent, a study was initiated in February, 1966. Adult shad were collected on their spawning run in the Apalachicola River system, Florida, from February to April. Interpretation of the scale structure indicated that four age classes were represented. A few one-year-old males (average 10.6 inches TL) were in evidence in the latter part of the run. The two-year class consisted mostly of males (average 13.4 inches TL), and small numbers of females (average 14.5 inches...