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The incubation period of chicken turtle eggs is again dependent on location and temperature. In the warmer climate of Florida, incubation takes 78–89 days in the wild, while in South Carolina it may last up to 152 days. [68]
One study on the incubation period of the common snapping turtle incubated the eggs at two temperatures: 20 °C (68 °F) and 30 °C (86 °F). The research found that the incubation period at the higher temperature was significantly shorter at approximately 63 days, while at the lower temperature the time was approximately 140 days. [25]
Incubation temperatures generally range from 26–32 °C (79–90 °F). Sea turtle eggs kept at a constant incubating temperature of 32 °C become females. Eggs incubating at 28 °C become males. An incubation temperature of 30 °C results in an equal ratio of male to female hatchlings. [67]
The sex of the eggs is determined by the temperature where they are incubated in a nest laid below sand. If the sand is over 30 degrees Celsius, it is a female and if below 30 degrees Celsius, the egg is a male. Incubation period can last from 80 to 90 days in Florida and 110 days in South Carolina.
Hatchlings A painted turtle hatching with an egg tooth. Incubation lasts 72–80 days in the wild [116] and for a similar period in artificial conditions. [133] In August and September, the young turtle breaks out from its egg, using a special projection of its jaw called the egg tooth. [63] Not all offspring leave the nest immediately, though ...
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.
The eastern mud turtle (Kinosternon subrubrum) or common mud turtle [2] ... The incubation period of the eggs can range from 76 to 124 days.
A mean clutch size of 116 (30–168 eggs) was observed in Suriname, while nesting females from the eastern Pacific were found to have an average of 105 (74–126 eggs). [11] The incubation period is usually between 45 and 51 days under natural conditions, but may extend to 70 days in poor weather conditions.