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).

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