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Titolo:
Extrapair paternity is influenced by breeding synchrony and density in thecommon yellowthroat
Autore:
Thusius, KJ; Dunn, PO; Peterson, KA; Whittingham, LA;
Indirizzi:
Univ Wisconsin, Dept Biol Sci, Milwaukee, WI 53201 USA Univ Wisconsin Milwaukee WI USA 53201 t Biol Sci, Milwaukee, WI 53201 USA
Titolo Testata:
BEHAVIORAL ECOLOGY
fascicolo: 5, volume: 12, anno: 2001,
pagine: 633 - 639
SICI:
1045-2249(200109/10)12:5<633:EPIIBB>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
WARBLERS DENDROICA-PETECHIA; RED-WINGED BLACKBIRDS; REPRODUCTIVE SYNCHRONY; SEXUAL SELECTION; PAIR PATERNITY; MATING SYSTEMS; DNA; POPULATION; FERTILIZATIONS; COPULATION;
Keywords:
breeding ecology; DNA fingerprinting; Geothlypis trichas; microsatellites; paternity; sexual selection; warblers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Dunn, PO Univ Wisconsin, Dept Biol Sci, POB 413, Milwaukee, WI 53201 USA Univ Wisconsin POB 413 Milwaukee WI USA 53201 aukee, WI 53201 USA
Citazione:
K.J. Thusius et al., "Extrapair paternity is influenced by breeding synchrony and density in thecommon yellowthroat", BEH ECOLOGY, 12(5), 2001, pp. 633-639

Abstract

The effects of breeding synchrony and density on levels of extrapair paternity in birds are controversial. We used multilocus DNA fingerprinting and microsatellite analysis to examine the effects of breeding synchrony and density on levels of extrapair paternity in the common yellowthroat (Geothlypis trichas). As in many Neotropical migrants, breeding synchrony was greatest at the beginning of the breeding season. Levels of extrapair paternity were higher after the peak in synchrony, leading to an overall negative relationship between extrapair paternity and breeding synchrony. However, therewas a significant interaction between breeding synchrony and density, as levels of extrapair paternity were higher only for males breeding when both synchrony and density were low. We discuss several possible explanations for this interaction, including lower quality males or territories in low density areas and greater demands on mate guarding among males with larger territories. Most studies have not considered simultaneously the effects of breeding synchrony and density on extrapair paternity. Our results suggest that ecological correlates of paternity may be revealed only after testing for interactions in multivariate analyses.

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Documento generato il 10/07/20 alle ore 15:01:26