Search results
Results From The WOW.Com Content Network
Temperature-dependent sex determination was first described in Agama agama in 1966 by Madeleine Charnier. [18] A 2015 study found that hot temperatures altered the expression of the sex chromosomes in Australia's bearded dragon lizards. The lizards were female in appearance and were capable of bearing offspring, despite having the ZZ ...
A temperature of 32 to 33 °C (90 to 91 °F) gives mostly males whereas above 33 °C (91 °F) in some species continues to give males, but in other species resulting in females, which are sometimes called high-temperature females. [89]
Although the female guards the nest for 80 to 98 days (in extreme high and low cases from 75 to 106 days), the loss of eggs is often high due to flooding and occasionally to predation. [50] As in all crocodilians, the sex of the hatchlings is determined by temperature.
The mugger crocodile (Crocodylus palustris) is a medium-sized broad- snouted crocodile, also known as mugger and marsh crocodile. It is native to freshwater habitats from southern Iran to the Indian subcontinent, where it inhabits marshes, lakes, rivers and artificial ponds. It rarely reaches a body length of 5 m (16 ft 5 in) and is a powerful ...
The average adult Morelet's crocodile is about 2.1 m (6 ft 11 in), with a typical length range of 1.5 to 2.7 m (4 ft 11 in to 8 ft 10 in) (the lower measurement representing the mean total length of a female at sexual maturity which is attained at roughly 7–8 years of age in the wild).
The freshwater crocodile is a relatively small crocodilian. Typically, Males can grow to a total length (including tail) of 2.3–3.0 m (7.5–9.8 ft) if a dominant male (although there are reported specimens of 4 metres in length (see below)), while females reach a maximum size of 2.1 m (6.9 ft). [9] Males commonly weigh around 70 kg (150 lb ...
Large American crocodile skull Typical female from Florida. The American crocodile is a highly fecund species. Average clutch size is 38 eggs, and fecundity is over 20% after 15 years old. The species has a high adult survival rate and a long life span. [25]
Nest temperature varies between 78–88 °F (26–31 °C) and are heated by decaying vegetation. [18] The incubation period is around 90 days and the sex of the hatchlings depends on the temperature of the nest during that time. When the eggs begin to hatch, the female opens the nest in response to the calls made by the young.