oostasis

uncountable

The failure of (typically insect) eggs to form or to develop

Japanese Meaning

（主に昆虫の）卵が形成または発達しない状態

After several failed breeding trials, the entomologist concluded that oostasis was the primary cause of the colony's decline.

数回の繁殖実験が失敗した後、昆虫学者は卵が形成されないか発育しないことがコロニーの衰退の主な原因だと結論付けた。

Sense（1）

The failure of (typically insect) eggs to form or to develop