eupyrene
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English[edit]
Adjective[edit]
eupyrene (not comparable)
- (zoology) Of sperm in species that exhibit sperm heteromorphism, fertile.
- 2016, Mamoru Watanabe, Sperm Competition in Butterflies, page 55:
- After the completion of copulation, the number of eupyrene sperm bundles in a spermatophore gradually decreased.