Reproduction and Growth of the Mud Turtle, Kinosteron subrubrum (Reptilia, Testudines, Kinosternidae), in Arkansas

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Abstract
Female Arkansas [USA] mud turtle (K. subrubrum) mature between their 6th and 8th winters at a plastron length of 75-80 mm. Vitellogenesis apparently begins in early fall and continues until the following nesting season. Ovulation and oviposition occur at least from early May-June and probably from early April-mid-July. During this period yolked follicles continue to mature, replacing those ovulated. Egg size is not correlated with female plastron length or clutch size. Incubation period averages 106 days. Clutch size ranges from 1-6, the mode being 3, and is positively correlated with female plastron length. At least 3 clutches are laid each year.

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