Variation in Mate Fidelity in Monogamous Birds

Ford, Norman L.

doi:10.1007/978-1-4615-6781-3_11

Cited by 140 publications

(85 citation statements)

References 69 publications

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“…Other researchers reported that intrusion rate peaked during the fertile period (Ford 1983, Hobson & Sealy 1989, but the frequencies of intrusions did not show such a clear tendency in my population. Sodhi & Nagata (1996) reported no relation between female fertility and territorial intrusion in the Japanese Reed Bunting (Emberiza yessoensis), and explained that access to communal feeding areas by males resulted in territory intrusions regardless of the resident female's fertility.…”

Section: Discussioncontrasting

confidence: 82%

The Cost of Mate Guarding in the Black-browed Reed Warbler Acrocephalus bistrigiceps. When Do Males Stop Guarding Their Mates?

Hamao

2000

Journal of the Yamashina Institute for Ornithology

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Abstract. To clarify the cost of mate guarding, when males attract additional mates, I studied the mate guarding behaviour of the Black-browed Reed Warbler Acrocephalus bistrigiceps in south-central Honshu, Japan in 1997. The percentage of time spent by males close (<5m) to their mates was significantly higher, and the distance between mates was significantly closer during the fertile than during the post-fertile period. Males followed their mates, whereas females did not follow the males. Territorial intrusions, by conspecific males, occurred more frequently in territories with nesting females than in those of solitary males, and an intruding male was found to court a fertile female when her mate was absent. These observations indicate that there is a real risk of extra-pair fertilization. Three males switched their behaviour from mate guarding to singing and attracted secondary females by resuming singing. Two of them stopped mate guarding on the day the first egg was laid, so their mates were unguarded during the remainder of their fertile period. In contrast, three other males, which maintained monogamous pair-bonds, continued to guard their mates throughout the fertile period. Male warblers who attract secondary mates appear to incur an additional cost in mate guarding.

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Section: Discussioncontrasting

confidence: 82%

The Cost of Mate Guarding in the Black-browed Reed Warbler Acrocephalus bistrigiceps. When Do Males Stop Guarding Their Mates?

Hamao

2000

Journal of the Yamashina Institute for Ornithology

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“…White storks, on the contrary, drastically reduced PC rates around a week before egg laying, and this effect was due to both a lower receptivity by females and a lower rate of copulation attempts by males. b) The existence of mate guarding (BIRKHEAD, 1979;FORD, 1983;FITCH & SHUGART, 1984;MCKINNEY et al, 1984;MOCK & FUJIOKA, 1990). White stork males spent less time at the nest during the female MF than pre-MF period, while the opposite pattern has been observed in cattle egrets (FUJIOKA & YAMAGISHI, 1981) and spoonbills (AGUILERA & ALVAREZ, 1989).…”

Section: Discussionmentioning

confidence: 99%

“…the intensity of sperm competition (PARKER, 1970) among ejaculates) determines how frequently a male should copulate with his female mate in order to be certain of his paternity (BIRKHEAD et al, 1987;BIRKHEAD, 1988;MOLLER & BIRKHEAD, 1992). Extra-pair copulations (EPC) are widespread in birds (see reviews by GLADSTONE, 1979;FORD, 1983;McKINNEY et al, 1983McKINNEY et al, , 1984MocK & FuJIOKA, 1990;WESTNEAT et al, 1990;BIRKHEAD & MOLLER, 1992), and recent methodological advances in techniques for detecting multiple paternity in broods of apparently monogamous species have demonstrated that EPC sometimes lead to a high incidence of extra-pair fertilizations (MocK & FuJIOKA, 1990;WEST-NEAT et al, 1990;MOLLER, 1991;WEATHERHEAD & MONTGOMERIE, 1991). ).…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the female should try to maintain a stable pair bond with her mate in order to benefit from his paternal expenditure while occassionally allowing nonmate males to fertilize her eggs. This rather complex sce-nario in which both members of a pair practise a mixture of monogamy and promiscuity was termed by TRIVERS (1972) a Mixed Reproducctive Strategy, and both theoretical and empirical evidence suggest that it may be common, rather than an exception, among birds traditionally considered to be exclusively monogamous (FORD, 1983;McKINNEY et al, 1984;BIRKHEAD et al, 1987;MOCK & FUJIOKA, 1990;WESTNEAT et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

“…However, two factors are thought to facilitate the occurence of EPC: 1) A high density of breeding pairs, like colonial nesting (FORD, 1983;WESTNEAT et al, 1990). Although coloniality is neither necessary nor sufficient for an EPC strategy to occur (WESTNEAT, 1987), some studies (BIRKHEAD, 1978;MOLLER, 1985MOLLER, , 1987a have reported EPC to be more prevalent among colonial than among dispersed or solitary breeders.…”

Section: Introductionmentioning

confidence: 99%

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