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Suitable terrestrial area is required for egg-laying by nesting females, who will normally lay 6–10 eggs at a time, with larger females capable of bearing more. Studies have shown the turtles' suitable area criteria will not change even with significant anthropogenic change, meaning humans should be careful when modifying yellow-bellied ...
The egg deposit does not occur until late summer or early autumn. Burrows may be as much as 1.3 meters (4 ft 3 in) deep. Breeding takes place within the burrow several months later. When the females lay eggs, they lay up to 50, and each can measure 7.5 millimeters (0.30 in) in diameter. The eggs undergo direct development inside the egg capsule ...
About 50% of female sea turtles complete "false crawls," which occur when they crawl onto the beach but return to the water without laying eggs.
Box turtle eggs are flexible, oblong and are (depending on the taxon) on average 2–4 cm long weighing 5-11 g. The normal clutch size is 1-7 eggs. In captivity and in the southern end of their range, box turtles can have more than one clutch per year, while the average clutch size is larger in more northern populations. [ 6 ]
Male desert box turtles are normally sexually mature by the time they are 8–9 years of age, but in captivity have been known to breed as young at the age 2. Females normally require 10–11 years to reach sexual maturity and their breeding season lasts between March and May, and nesting sites will be chosen from May to July.
The bog turtle has a low reproduction rate; females lay one clutch per year, with an average of three eggs each. The young tend to grow rapidly, reaching sexual maturity between the ages of 4 and 10 years. Bog turtles live for an average of 20 to 30 years in the wild. Since 1973, the Bronx Zoo has successfully bred the bog turtle in captivity.
More than 8,000 sea turtle nests were logged across South Carolina beaches in 2022, the second-most ever documented. But threats to habitat and continued development are threats.
The turtle continues to grow after reaching maturity, although considerably more slowly. Females that reach a length of around 180 mm (7.09 in) appear to become much less reproductively active; they may only lay eggs every second or third nesting season, or they may cease to ovulate altogether. [50]