The sex of baby turtles is defined by eggs incubation temperature. Above a certain temperature, hatchlings will be female. Below, they will be males.
This ยซ pivot ยป temperature is observed at around 28.5ยฐC for green turtles. The hatchlings in the lower part of the nest where temperature is cooler, will therefore more frequently be males and the emerging turtles located in the upper warmer part of the nest will mostly be females.
๐๐ฉ๐ข๐ต ๐ค๐ฐ๐ถ๐ญ๐ฅ ๐ฃ๐ฆ ๐ต๐ฉ๐ฆ ๐ช๐ฎ๐ฑ๐ข๐ค๐ต ๐ฐ๐ง ๐จ๐ญ๐ฐ๐ฃ๐ข๐ญ ๐ธ๐ข๐ณ๐ฎ๐ช๐ฏ๐จ?
A warmer temperature would result in a disproportion of the male/female ratio with a dominance of females.
In Polynesia, this phenomenon has not yet been proven. However, in some countries the results are alarming!
A study conducted in Australia on Raine Island by Dr. Camryn Allen, demonstrated a ratio of 116 females to 1 male in a population of adult green turtles.
