进化：精子巨头的悖论。

Evolution: the paradox of sperm leviathans.

作者信息

Pizzari Tommaso

机构信息

Department of Zoology, Edward Grey Institute of Ornithology, University of Oxford, Oxford OX1 3PS, UK.

出版信息

Curr Biol. 2006 Jun 20;16(12):R462-4. doi: 10.1016/j.cub.2006.05.031.

DOI:10.1016/j.cub.2006.05.031

PMID:16782002

Abstract

Sexual selection theory predicts that sperm competition will push males to produce more, smaller sperm. Paradoxically, in the fruitfly Drosophila bifurca sperm competition is rife but males produce few, giant sperm--the largest known. A recent study reconciles the evolution of giant sperm with theory.

摘要

性选择理论预测，精子竞争会促使雄性产生更多、更小的精子。矛盾的是，在果蝇双叉果蝇中，精子竞争很激烈，但雄性产生的精子却很少，且都是已知最大的巨型精子。最近的一项研究使巨型精子的进化与该理论达成了一致。