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Titolo:
Microsatellite identification of extrapair sires in a socially monogamous warbler
Autore:
Webster, MS; Chuang-Dobbs, HC; Holmes, RT;
Indirizzi:
SUNY Buffalo, Dept Biol Sci, Buffalo, NY 14260 USA SUNY Buffalo Buffalo NY USA 14260 o, Dept Biol Sci, Buffalo, NY 14260 USA Dartmouth Coll, Dept Biol Sci, Hanover, NH 03755 USA Dartmouth Coll Hanover NH USA 03755 Dept Biol Sci, Hanover, NH 03755 USA
Titolo Testata:
BEHAVIORAL ECOLOGY
fascicolo: 4, volume: 12, anno: 2001,
pagine: 439 - 446
SICI:
1045-2249(200107/08)12:4<439:MIOESI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
RED-WINGED BLACKBIRDS; SWALLOW HIRUNDO-RUSTICA; THROATED BLUE WARBLER; SEXUAL SELECTION; BREEDING SYNCHRONY; PAIR PATERNITY; REPRODUCTIVE SYNCHRONY; GENETIC-RELATIONSHIPS; FEMALE CHOICE; BIRDS;
Keywords:
black-throated blue warbler; Dendroica caerulescens; extrapair fertilization; microsatellites; opportunity for selection; socially monogamous mating systems;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Webster, MS Washington State Univ, Sch Biol Sci, POB 644236, Pullman, WA 99164 USA Washington State Univ POB 644236 Pullman WA USA 99164 9164 USA
Citazione:
M.S. Webster et al., "Microsatellite identification of extrapair sires in a socially monogamous warbler", BEH ECOLOGY, 12(4), 2001, pp. 439-446

Abstract

Few studies of avian mating systems have identified the sires of extrapairyoung, and hence it has been difficult to determine the scale at which reproductive interactions occur. For instance, females may be free to copulatewith any male in the population (a "global" scale of interactions), or females may be restricted to copulating only with males on neighboring territories (a "local" scale). The scale of such interactions has important consequences for an understanding of the evolutionary causes and consequences of extrapair fertilizations. We used five hypervariable microsatellite loci and multilocus DNA fingerprinting to examine parentage of more than 400 nestling black-throated blue warblers (Dendroica caerulescens). Extrapair fertilizations were common. and the microsatellite markers allowed us to identifythe sires for 89% of the young analyzed. Most identified extrapair sires were males on neighboring or nearby territories, and most nestlings for whomwe could not identify a sire came from territories at the edge of the study plot. Thus, reproductive interactions appear to he more local than globalin this population. Extrapair fertilizations contributed significantly to total variation in male reproductive success. However, the standardized variance in male reproductive success (0.68-0.74) was not substantially greater than that for females (0.53-0.60), and the contribution of extrapair fertilizations 19-14%) was much lower than the contribution of within-pair fertilizations (75-77%). This suggests that the local scale of reproductive interactions may limit variation in male reproductive success and hence the opportunity for selection.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:48:25