Spermatogenic Cycle of the Florida Softshell Turtle, Apalone ferox

Peter A. Meylan; Rachel Schuler; Paul Moler

doi:10.1643/0045-8511(2002)002[0779:SCOTFS]2.0.CO;2

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Peter A. Meylan,¹ Rachel Schuler,¹ Paul Moler¹

¹(PAM, RS) Natural Sciences, Eckerd College, St. Petersburg, Florida 33711; and (PM) Florida Fish and Wildlife Conservation Commission, 4005 South Main Street, Gainesville, Florida 32601. (PAM) . Send reprint requests to PAM. meylanpa@eckerd.edu

Abstract

Spermatogenesis in Apalone ferox from Palm Beach County, Florida, is found to follow a postnuptial or dissociated pattern. Reduction of epididymis mass and clearing of sperm from the epididymides suggest spring mating. Histology of the testes, somatic index, and tubule diameter all suggest fall spermatogenesis. Males as small as 15.2 cm PL were found to be mature, and all males were reproductive in a given year. The distribution of postnuptial spermatogenesis is mapped on a phylogeny of turtles and suggests that this pattern has evolved at least six times among living turtles.

The American Society of Ichthyologists and Herpetologists

Citation Download Citation

Peter A. Meylan, Rachel Schuler, and Paul Moler "Spermatogenic Cycle of the Florida Softshell Turtle, Apalone ferox," Copeia 2002(3), 779-786, (1 August 2002). https://doi.org/10.1643/0045-8511(2002)002[0779:SCOTFS]2.0.CO;2

Received: 9 July 2001; Accepted: 11 March 2002; Published: 1 August 2002

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