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The extent of the TSP varies a little among species, [12] and development within the oviducts must be taken into account in species where the embryo is at a relatively late stage of development on egg laying (e.g. many lizards). Temperature pulses during the thermosensitive period are often sufficient to determine sex, but after the TSP, sex is ...
Depending on the species of crocodile, 7 to 95 eggs are laid. Crocodile embryos do not have sex chromosomes, and unlike humans, sex is not determined genetically. Sex is determined by temperature, where at 30 °C (86 °F) or less most
Crocodilian eggs are protected by hard shells made of calcium carbonate. The incubation period is two to three months. [48] The sex of the developing, incubating young is temperature dependant; constant nest temperatures above 32 °C (90 °F) produce more males, while those below 31 °C (88 °F) produce more females. Sex in crocodilians may be ...
The sex of the eggs is determined by temperature. Females are produced between 28 and 31 °C. Males are produced between 31 and 33 °C. The maximum temperature that the eggs are able to withstand is 34 °C and produce females. [16] Sex is determined between day 14 and 21. The mothers help the offspring hatch if they can not do so themselves.
[10] [101] Nile crocodiles have temperature-dependent sex determination (TSD), which means the sex of their hatchlings is determined not by genetics as is the case in mammals and birds, but by the average temperature during the middle third of their incubation period. If the temperature inside the nest is below 31.7 °C (89.1 °F), or above 34. ...
Fox News Digital spoke to an egg expert based in Maine to find out why egg yolks come in different colors — and if these different colors mean anything significant in terms of nutrition.
Yoko, a baby swell shark, swims in a tank at Shreveport Aquarium in Shreveport, Louisiana. The shark hatched from an egg on Jan. 3, 2025. Aquarium staff are unsure how the egg came to be, as ...
Both young and adult mugger crocodiles dig burrows to which they retreat when the ambient temperature drops below 5 °C (41 °F) or exceeds 38 °C (100 °F). Females dig holes in the sand as nesting sites and lay up to 46 eggs during the dry season. The sex of hatchlings depends on temperature during incubation. Both parents protect the young ...