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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.
Once they spot a turtle and she reaches a certain stage in her nesting process, they lead the group over to watch her lay eggs in the sand and return to the ocean. The process can take the turtle ...
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]
After the eggs are laid, the cavity is filled. They hatch after 50 to 70 days of incubation, and most hatchlings emerge in August to September. When a nest hatches late, the northern map turtle hatchlings have been known to overwinter in the nest. The female usually lays two or more clutches in one breeding season.
For example, the average carapace length of nesting females (n = 251) at Playa Nancite, Costa Rica, was determined to be 63.3 cm, with the smallest recorded at 54.0 cm. [7] Females can lay up to three clutches per season, but most only lay one or two clutches. [11] The female remains near shore for the internesting period, which is about one month.
The Florida box turtle reaches sexual maturity around 12–13 years of age. [9] While some species can produce only one clutch in a breeding season, the Florida box turtle has been observed laying as many as four separate clutches in a single year. The egg laying season occurs in the Spring and generally lasts from April to early June. On ...
Sexually mature females of the western pond turtle produce 5–13 eggs per clutch. They deposit eggs either once or twice a year. They may travel some distance from water for egg-laying, moving as much as 0.8 km (1/2 mile) away from and up to 90 m (300 ft) above the nearest source of water, but most nests are within 90 m (300 ft) of water.
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.