aquaspermとは 意味・読み方・使い方

名詞

aquasperm (uncountable)

1. Sperm that is released into an aquatic environment such as seawater.
   • 1998, Luiz R. Malabarba, Phylogeny and Classification of Neotropical Fishes, page 242:

     The spermatozoon of Aphyocharax anisitsi is a typical aquasperm with a spherical nucleus, short midpiece and short cytoplasmic collar.

   • 1991, Barrie G. M. Jamieson, Fish Evolution and Systematics:

     Aquasperm contrast with intemally fertilizing sperm which do not enter the water, for which these authors have proposed the term introsperm.