Editing Sexual selection (section)

=== In molluscs ===

Postcopulatory intersexual selection occurs in ''[[Idiosepius paradoxus]]'', the Japanese pygmy squid. Males place their spermatangia on an external location on the female's body. The female physically removes spermatangia of males she is presumed to favour less.<ref name="Sato-2016">{{Cite journal |last1=Sato |first1=Noriyosi |last2=Yoshida |first2=Masa-aki |last3=Kasugai |first3=Takashi |date=2016-11-17 |title=Impact of cryptic female choice on insemination success: Larger sized and longer copulating male squid ejaculate more, but females influence insemination success by removing spermatangia |url=https://doi.org/10.1111/evo.13108 |journal=Evolution |volume=71 |issue=1 |pages=111–120 |doi=10.1111/evo.13108 |pmid=27805265 |s2cid=8866473 |issn=0014-3820}}</ref><ref name="Sato-2013">{{Cite journal |last1=Sato |first1=Noriyosi |last2=Kasugai |first2=Takashi |last3=Munehara |first3=Hiroyuki |date=2013-03-01 |title=Sperm transfer or spermatangia removal: postcopulatory behaviour of picking up spermatangium by female Japanese pygmy squid |url=https://doi.org/10.1007/s00227-012-2112-5 |journal=Marine Biology |volume=160 |issue=3 |pages=553–561 |doi=10.1007/s00227-012-2112-5 |bibcode=2013MarBi.160..553S |issn=1432-1793|hdl=10069/31698 |s2cid=253740276 |hdl-access=free }}</ref>