The timing of egg hatching in Cryptotympana facialiswas examined in relation to short-term weather conditions. The brief underwater submergence, once a week, of dead twigs bearing cicada egg nests resulted in high hatching rates both at 25 °C and under outdoor conditions protected from rainfall. Under outdoor conditions with natural rainfall, most eggs hatched on rainy days. There was a significant positive correlation between the number of hatching eggs and daily relative humidity (RH). When eggs picked from twigs were exposed to various humidity levels, many eggs hatched quickly at higher humidity without direct contact with liquid water. Newly hatched nymphs showed a low tolerance to desiccation; at 81% RH at 25 °C, most of them died within 6 h. Under outdoor conditions, most nymphs died within 2 h on sunny days, whereas nymphs survived longer on rainy days. When newly hatched nymphs were released on dry ground, only 24% of them succeeded in burrowing into the soil, and many were killed by ants or desiccation. However, 92% of nymphs released onto wet ground successfully burrowed into it. The direct induction of hatching by high humidity ensures the survival and establishment in the soil of newly hatched nymphs in this species.
2 years
Dinosaurs hatched from eggs.
Dumbo Octopuses are hatched from eggs.
They are hatched from eggs.
Both are hatched from eggs. Neither are mammals
hatched from eggs
All insects are hatched from eggs. The only method by which insects reproduce is by laying eggs.
Cicadas hatch from eggs which look like grains of rice. These eggs are laied in slits in tree branches made by the adults. Once hatched, they burrow underground and wait to resurface for years.
eggs
In a nest.
Picture of animals hatched from egg
The eggs hatched into baby chicks under the heat lamp.