Age and Growth of a Landlocked Population of Blueback Herring and Management Implications
A landlocked population of blueback herring (Alosa aestivalis) was established in 1982 in Lake Theo, Texas, and persisted for 7 years. Analysis of scales provided inaccurate ages for fish older than age 1. Analysis of otoliths provided valid ages of blueback herring, but protracted formation of annuli on otoliths limited the use of otoliths for back-calculating lengths of these fish. Fish in this landlocked population attained maximum total lengths of 240 mm, lived 2 years, and spawned only once. The disappearance of blueback herring in Lake Theo was attributed to their short life cycle...
