Distribution and Status of the Alligator Snapping Turtle (Macrochelys temminckii) in Alabama

Abstract

Macrochelys temminckii (Alligator Snapping Turtle) has experienced historical harvesting pressures that impact a number of current populations. Filling distribution gaps and obtaining demographic data can better inform conservation and management. We summarized multi-year samples targeting the Alligator Snapping Turtle in large river systems and major tributaries of Alabama. Although catch per unit effort was lower than observed in other states, we filled distribution gaps in several river systems. Though studies from other states documented effects of historical harvesting pressure on Alligator Snapping Turtle populations, mean adult mass of both sexes, mean carapace length, and capture ratio of adults to immatures suggested reduced pressures in Alabama and possible population stability. Nevertheless, smaller tributaries and creeks need to be surveyed for previously undetected populations with mark-recapture and movement studies.