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Copulation behaviour of the tree swallow, Tachycineta bicolor: paternity assurance in the presence of sperm competition

โœ Scribed by Lisa A. Venier; Raleigh J. Robertson

Book ID
117027761
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
798 KB
Volume
42
Category
Article
ISSN
0003-3472

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Occurrence of extra-pair copulation in t
Occurrence of extra-pair copulation in the tree swallow (Tachycineta bicolor)
โœ Scott B. Morrill; Raleigh J. Robertson ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Springer ๐ŸŒ English โš– 649 KB

A new method to mark sperm transfer events between birds, using microspheres inserted into males' cloacae, was employed to assess the frequency of extra-pair copulation (EPC) in a population of tree swallows (Tachycineta bicolor) in Ontario, Canada, during the summer of 1988. We inserted 25 males wi