Over 27 million eggs are left unharvested, and villagers have played a large role in protecting these nests from predators, thereby increasing hatching success.

Miralto et al. reported a low hatching success of eggs laid by copepods that fed on diatoms containing polyunsaturated aldehydes.

Embryos transferred to 16 C from 0-4 C on day 49 underwent early katatrepsis but displayed a high hatching success.

The authors conclude that diminished water level interacting with predators and trampling by cattle resulted in decreased hatching success.

The incubation period is 18 to 29 days, and the hatching success is 38%, notably less than the similar Light-footed Clapper Rail indigenous to southern California.

In captivity, tortoise eggs usually have a hatching success of around 85 per cent, much greater than in the wild, where weather conditions play a major role.

Factors affecting hatching success of golden apple snail eggs: effects of water immersion and cannibalism.

Factors affecting hatching success of sea turtle eggs.

Eggs are incubated for 35-40 days, and the species is reported to have a 60% hatching success.