apyrene

English

Adjective

apyrene (not comparable)

1. (zoology) Of sperm in species that exhibit sperm heteromorphism, infertile.
   • 2001, Leigh W. Simmons, Sperm Competition and Its Evolutionary Consequences in the Insects:

     Counter to this latter hypothesis, Cook and Gage (1995) have shown that, unlike eupyrene numbers, apyrene sperm numbers do not vary with sperm competition risk (see fig 7.7).

Coordinate terms

• eupyrene

Anagrams

• pyrenae