Social mating system and reproductive success in house wrens

Soukup, Sheryl Swartz; Thompson, Charles F.

doi:10.1093/beheco/9.1.43

Cited by 26 publications

(12 citation statements)

References 32 publications

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“…Given that paternity in the male's own nest is apparently not related to male ornaments or body size in our population (Rosivall et al 2009), a directional effect of extra-pair paternity on our results is unlikely in this respect. However, the relationship between paternity and polygyny could be negative (Pilastro et al 2002), very weak (Pearson et al 2006), or positive (Soukup and Thompson 1998), so our data on polygyny must be treated with caution. Studies conducted in different populations of the sibling species pied flycatcher (Ficedula hypoleuca) have consistently shown that polygynous males have extra-pair young in their broods more frequently than monogamous males (Brün et al 1996;Lubjuhn et al 2000;Drevon and Slagsvold 2005).…”

Section: Discussionmentioning

confidence: 88%

“…Many studies have shown that polygyny increases the seasonal reproductive success of male birds due to the increased number of offspring from multiple broods (Davies and Houston 1986;Soukup and Thompson 1998). However, this increase may not be very large in cases when the reduced male help impairs the success of the secondary or both females (Slagsvold and Lifjeld 1994;Garamszegi et al 2004).…”

Section: Discussionmentioning

confidence: 99%

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Lifetime offspring production in relation to breeding lifespan, attractiveness, and mating status in male collared flycatchers

et al. 2012

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As a comprehensive fitness parameter, lifetime reproductive success (LRS) is influenced by many different environmental and genetic factors, among which longevity is one of the most important. These factors can be reflected in secondary sexual characters, which may affect the life histories of individuals via social relations with conspecifics. Facultative polygyny in birds is another conspicuous reproductive trait that potentially increases male reproductive success, but lifetime success data in relation to polygyny are scarce. Here, we used 17 years of breeding data to quantify the LRS of male collared flycatchers (Ficedula albicollis) on the basis of lifetime recruitment of offspring. Breeding lifespan showed a positive relationship with LRS, and it was also significantly associated with mean recruitment of offspring per breeding year. Body size and sexually selected forehead patch size did not predict the number of recruits. Polygyny was positively associated with LRS, but when we corrected for lifespan, this relationship disappeared. Our results demonstrate that the relationship between longevity and LRS is not explained by the higher number of reproductive attempts when living longer, and question the adaptive value of polygyny in this population. The lack of association between forehead patch size and recruitment suggests that forehead patch is a poor indicator of phenotypic quality in our birds.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Lifetime offspring production in relation to breeding lifespan, attractiveness, and mating status in male collared flycatchers

et al. 2012

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“…There have been proposals to split the species [11], but currently it is recognized as a single species [12,13] with 31 subspecies [13]. The species reaches its northern limits in Central Alberta, Canada (588 N) and its southern limits in Tierra del Fuego (558 S).…”

Section: Materials and Methods (A) Study Speciesmentioning

confidence: 99%

Transcontinental latitudinal variation in song performance and complexity in house wrens (Troglodytes aedon)

et al. 2016

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There is growing interest in latitudinal effects on animal behaviour and life history. One recent focus is on birdsong, which is hypothesized to be more elaborated or complex in the north temperate zone compared with the tropics. Current evidence is mixed and based on cross-species comparisons, or single species with restricted distributions. We circumvent these limitations using a transcontinental sample of 358 songs from house wrens (Troglodytes aedon) at 281 locations spanning more than 1008 of latitude (528 N-558 S) across the Americas. We found a significant latitudinal gradient in several basic elements of song performance and complexity between north temperate and tropical populations. Furthermore, we document convergence in song patterns between populations at higher latitudes in the Northern and Southern Hemispheres. Effects were strongest for the number of elements in a song, and the rate of element production, both increasing towards the poles, with similar but weaker effects for other song dimensions (e.g. number of unique elements, trills and trill rate). We consider possible causes related to variable habitats and morphology, concluding that the shorter breeding seasons at higher latitudes in both hemispheres may favour greater song elaboration to mediate territory competition and mate choice.

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“…Alternatively, MartinezPadilla (2006) suggested that the decline in cutaneous immune activity during the day may be caused by diurnal variation in energy expenditure of nestlings, especially in the context of sibling competition, which is an energetically costly activity (Massemin et al 2002). Sibling competition among house wren nestlings might arise from multiple sources, including reduced intrabrood relatedness brought about by high rates of extrapair fertilization (Soukup and Thompson 1998;Forsman et al 2008b) and asynchronous hatching (Harper et al 1992). Also, provisioning rates late in the nestling period are typically higher in the morning than in the afternoon in house wrens (Kendeigh 1952), suggesting that nestlings may become more energy limited as the day progresses.…”

Section: Cutaneous Immune Responsivenessmentioning

confidence: 99%

Cutaneous Immune Activity, but Not Innate Immune Responsiveness, Covaries with Mass and Environment in Nestling House Wrens (Troglodytes aedon)

Forsman

Sakaluk²,

Thompson³

et al. 2010

Physiological and Biochemical Zoology

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Immunological measures are increasingly being applied to ecological and evolutionary studies of wild vertebrates, yet frequently it is not clear how condition and environmental factors correlate with various immune parameters. We used mixed-model ANOVA to examine the effects of several measures of condition (both morphological and physiological) and environmental factors on two measures of immune responsiveness in nestling house wrens (Troglodytes aedon L.) to test the hypothesis that nestlings in good condition mount stronger immune responses than those in poor condition. Based on previous studies, we predicted that the innate bactericidal response would be less likely to be affected by condition-related factors than the cutaneous response, which includes both innate and the more costly adaptive components. Both cutaneous immune activity (i.e., phytohaemagglutinin [PHA] response) and innate immune responsiveness (i.e., plasma bactericidal activity) varied significantly among broods. Nestling PHA response was significantly influenced by year, mass, and the time of day that the challenge was administered. However, besides nest of origin, no other variable examined had a significant effect on bactericidal activity. Morphological condition, assessed as body mass adjusted for structural size, differed significantly among nests and years and was positively correlated with hematocrit but not plasma albumin/gamma-globulin proteins, indicating that these are measures of different aspects of health state.

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Social mating system and reproductive success in house wrens

Cited by 26 publications

References 32 publications

Lifetime offspring production in relation to breeding lifespan, attractiveness, and mating status in male collared flycatchers

Lifetime offspring production in relation to breeding lifespan, attractiveness, and mating status in male collared flycatchers

Transcontinental latitudinal variation in song performance and complexity in house wrens (Troglodytes aedon)

Cutaneous Immune Activity, but Not Innate Immune Responsiveness, Covaries with Mass and Environment in Nestling House Wrens (Troglodytes aedon)

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