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Zoo logger: The lizard that changes its intercourse to match the weather

Zoo logger: The lizard that changes its intercourse to match the weather

Zoologger is our regular line highlighting extraordinary pets – and occasionally other organisms – from about the whole world

Species: The main beardie (Pogona vitticeps)Habitat: Arid woodlands and deserts in Central Australia

If you can’t stay the warmth, modification sex. Male lizards from Australia become super-fecund females in warm weather.

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Rising temperatures can lead to a intercourse change avalanche that pushes populations – and perhaps the species that are entire towards a culture without adult men.

An embryo to develop as either a male or a female for some reptiles, such as many snakes and lizards, sex chromosomes trigger. For other individuals, including crocodiles, alligators and marine turtles, intercourse depends upon heat, with extremes generally ultimately causing more females, possibly by inhibiting male genes.

Bearded dragons reveal a 3rd means – a type of evolutionary change amongst the two.

They have sex chromosomes like us. For them it is a Z and a W. Having ZZ chromosomes ordinarily makes a male, and ZW a lady. However if male eggs are subjected to conditions over 32 °C, this logic gets overridden.