Male rock sparrows adjust their breeding strategy according to female ornamentation: parental or mating investment?

Pilastro, Andrea; Griggio, Matteo; Matessi, Giuliano

doi:10.1006/anbe.2003.2203

Cited by 73 publications

(75 citation statements)

References 23 publications

(38 reference statements)

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“…D-G, An apparent association between paternal care and EPP can result from two independent associations between (1) female individual quality and extrapair paternity (D) or paternal care (E) or between (2) environmental effects and EPP (F) or paternal care (G). don 2000; Pilastro et al 2003;Matessi et al 2009;Morales et al 2009). If females differ consistently in the number of EPO in their broods, and the quantity of EPO is associated with individual quality (Forstmeier et al 2011), then a misleading association with paternal care can result ( fig.…”

Section: The Problemmentioning

confidence: 99%

Predictably Philandering Females Prompt Poor Paternal Provisioning

Schroeder

Hsu

Winney

et al. 2016

The American Naturalist

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Dryad data: http://dx.doi.org/10.5061/dryad.0t313.abstract: One predicted cost of female infidelity in socially monogamous species is that cuckolded males should provide less parental care. This relationship is robust across species, but evidence is ambiguous within species. We do not know whether individual males reduce their care when paired with cheating females compared with when paired with faithful females (within-male adjustment) or, alternatively, if the males that pair with cheating females are the same males that provide less parental care in general (between-male effect). Our exceptionally extensive long-term data set of repeated observations of a wild passerine allows us to disentangle paternal care adjustment within males-within pairs and between males-while accounting for environmental variables. We found a within-male adjustment of paternal provisioning, but not incubation effort, relative to the cuckoldry in their nest. This effect was mainly driven by females differing consistently in their fidelity. There was no evidence that this within-male adjustment also took place across broods with the same female, and we found no between-male effect. Interestingly, males that gained more extrapair paternity provided less care. Data from a cross-foster experiment suggested that males did not use kin recognition to assess paternity. Our results provide insight into the role of individual variation in parental care and mating systems.

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Section: The Problemmentioning

confidence: 99%

Predictably Philandering Females Prompt Poor Paternal Provisioning

Schroeder

Hsu

Winney

et al. 2016

The American Naturalist

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“…For example, in response to reduced plumage spottiness in female barn owls (Tyto alba) and reduced UV crown reflectance in female blue tits, males provisioned nestlings less than males paired to control females (Roulin, 1999;Mahr et al, 2012). While provisioning rate of male rock sparrows was not influenced by the reduced breast patch size of females, males did reduce their level of nest defence when paired to females displaying the less attractive phenotype compared to control females (Pilastro et al, 2003;Matessi et al, 2009). That male tree swallows did not provision in relation to female attractiveness suggests that plumage brightness is not a signal assessed by males, at least when making decisions on how much to invest in parental care.…”

Section: Discussionmentioning

confidence: 98%

“…Previous studies testing male differential allocation have generally demonstrated that males adjust investment in parental care according to mate attractiveness as predicted by positive differential allocation (e.g., Burley, 1988;Roulin, 1999;Pilastro et al, 2003;Matessi et al, 2009;Mahr et al, 2012, but see Limbourg et al, 2013). For example, in response to reduced plumage spottiness in female barn owls (Tyto alba) and reduced UV crown reflectance in female blue tits, males provisioned nestlings less than males paired to control females (Roulin, 1999;Mahr et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…One study found the opposite, where male provisioning increased in response to experimentally reduced ultraviolet (UV) crown reflectance of female blue tits (Cyanistes caeruleus; Limbourg et al, 2013). In contrast, the only study that I am aware of that experimentally altered the phenotypic appearance of females to be more attractive reported no support for the differential allocation hypothesis; males paired to female rock sparrows (Petronia petronia) with increased breast patch size showed no difference in brood defence or nestling provisioning compared to controls (Pilastro et al, 2003). Therefore, support for positive differential allocation by males when paired to females whose phenotypic traits have been manipulated to be more attractive, as demonstrated by Burley (1988), is lacking.…”

Section: Introductionmentioning

confidence: 95%

“…These studies have generally demonstrated that males provide lower parental investment in the form of brood defence or provisioning nestlings when paired to unattractive females (Roulin, 1999;Pilastro et al, 2003;Matessi et al, 2009;Mahr et al, 2012). One study found the opposite, where male provisioning increased in response to experimentally reduced ultraviolet (UV) crown reflectance of female blue tits (Cyanistes caeruleus; Limbourg et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Determinants of making success in female Tree Swallows (Tachycineta Bicolor)

Berzins¹

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Females from a wide variety of taxa display elaborate ornaments and aggressive behaviours that are similar to those expressed by males. Although recent empirical investigation has demonstrated that ornamental traits and behaviours of females may function by attracting mates or signalling competitive ability when competing against conspecifics for access to mates and resources, less is known about how such traits influence the mating success of free-living female birds. For my research, I experimentally examined how variation in plumage brightness and behaviour of female tree swallows (Tachycineta bicolor) influenced their mating success.Plumage brightness of females had no influence on investment in parental care or mating strategies of males, or the quality of social mate paired to the female. These results suggest that bright plumage is not a signal of attractiveness preferred by male tree swallows.In contrast, I report evidence that plumage brightness of female tree swallows is involved in agonistic interactions with conspecifics. Females whose plumage brightness was enhanced to signal high quality were less able to retain their nest site than females whose plumage brightness was reduced to signal low quality. This suggests that females displaying bright plumage may be challenged by conspecifics of high quality to test the quality signalled by bright plumage, and is supported by the finding that females displaying enhanced plumage brightness suffered social costs, such as delaying breeding and producing low-quality nestlings. Despite these costs, females in the enhanced plumage brightness treatment mated with extra-pair males that were higher quality than their social mate.Behaviour of females, manipulated by elevating testosterone (T), lowered the proportion of extra-pair offspring in the broods of T-treated females. Females manipulated so that the androgenic and estrogenic actions of T were blocked also produced fewer extra-pair iii offspring, and suggest that the androgenic and/or estrogenic actions of T influence extra-pair copulation behavior of female tree swallows. In conclusion, my results show that plumage brightness and behaviour of female tree swallows influence their mating success, and highlight the importance of studies experimentally manipulating ornamental and behavioural traits of free-living female birds prior to breeding.iv

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Mating Systems

Ritchison

2023

Fascinating Life Sciences

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Male rock sparrows adjust their breeding strategy according to female ornamentation: parental or mating investment?

Cited by 73 publications

References 23 publications

Predictably Philandering Females Prompt Poor Paternal Provisioning

Predictably Philandering Females Prompt Poor Paternal Provisioning

Determinants of making success in female Tree Swallows (Tachycineta Bicolor)

Mating Systems

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