Sperm Precedence, Mating Interval, and a Novel Mechanism of Paternity Bias in a Beetle (Tenebrio molitor L.)

When females mate with more than one male, the ensuing sperm competition leads to the evolution of male mechanisms that skew paternity. Males of the yellow mealworm beetle (Tenebrio molitor) transfer a spermatophore to females during copulation, but sperm release and storage occur later. We investig...

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Veröffentlicht in:	Behavioral ecology and sociobiology 2000-11, Vol.48 (6), p.447-451
Hauptverfasser:	Drnevich, Jenny M., Emily F. Hayes, Rutowski, Ronald L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal, plant and microbial ecology Animals Autoecology Beetles Biological and medical sciences Evolution Female animals Fundamental and applied biological sciences. Psychology Insect behavior Insect reproduction Male animals Mating behavior Protozoa. Invertebrata Sperm competition Spermatophores Spermatozoa Tenebrio molitor Tenebrionidae
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Beschreibung
Zusammenfassung:	When females mate with more than one male, the ensuing sperm competition leads to the evolution of male mechanisms that skew paternity. Males of the yellow mealworm beetle (Tenebrio molitor) transfer a spermatophore to females during copulation, but sperm release and storage occur later. We investigated how the interval between two matings with different males affects sperm precedence by varying the interval between the copulations so that the second mating was either: (1) before sperm release from the first spermatophore (
ISSN:	0340-5443 1432-0762
DOI:	10.1007/s002650000257