Sentences with phrase «filamentous structures on»
However, inseminated worms will often suction the sperm out of their female genital opening using their mouth when copulation is over.3 Some worms have also evolved countermeasures against such rejection: filamentous structures on the side of the sperm heads that anchor the genetic packages into the body cavity.4 (See illustration.)
https://www.the-scientist.com/
The worms are capable of sucking out the sperm following copulation, but some worms have evolved filamentous structures on the sperm heads help protect against such manipulation by anchoring the sperm inside the antrum.