Series: Ecological Research Monographs
By: Mamoru Watanabe(Author)
174 pages, 33 colour & 52 b/w photos and illustrations, 31 tables
Sperm Competition in Butterflies describes about 30 years of theoretical, empirical, and experimental work on butterfly sperm competition. It considers the reproductive morphology and sperm utilization interests of males and females, which shape the mating tactics of each sex. Females of most butterfly species mate multiple times throughout their lives. The reasons are explored, as well as the numerous adaptations males have developed to prevent future mating and fertilization by the sperm of other males. In particular, Sperm Competition in Butterflies focuses on the role of apyrene sperm. Eupyrene and apyrene sperm dimorphism is most likely a key factor in sperm competition, and the study in butterflies promotes understanding of sexual selection across animal species with sperm polymorphism. Sperm Competition in Butterflies, describing the evolutionary causes and consequences of the sperm competition in butterflies, is a recommended read for students of behavioural ecology.
2 Historical Perspective
3 Reproductive Anatomy
4 Necessary Requirements for Oviposition
5 Mating Conflict
6 Avoidance of Sperm Competition in Males
7 Sperm Manipulation in Females
8 Apyrene Sperm as a Key Factor for Sperm Competition
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