also: へいしゅこうか
noun
bottleneck effect
Rare term in population genetics; refers to a sharp reduction in genetic diversity due to a drastic decrease in population size. Synonymous with ボトルネック効果.
See also: ボトルネック効果
びん首効果によって遺伝的多様性が失われることがある。
Genetic diversity can be lost due to the bottleneck effect.
More common loanword equivalent; 瓶首効果 is a rare Japanese calque used mainly in academic contexts.
Calque from English 'bottleneck effect', combining 瓶首 (bottleneck) and 効果 (effect).