Negative effects of elevated testosterone on female fecundity in zebra finches

Rutkowska, Joanna; Cichoń, Mariusz; Puerta, Marisa; Gil, Diego

doi:10.1016/j.yhbeh.2004.12.006

Cited by 89 publications

(64 citation statements)

References 34 publications

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“…Wingfield 1994), prolonged territorial encounters might compromise the time females spend on caring for their offspring ( Fite et al 2005, but see Clotfelter et al 2004). Both short-term and prolonged elevated T levels may also interfere with other aspects of reproduction, such as egg production and brood patch development (Searcy 1988;Clotfelter et al 2004;Rutowska et al 2005). This might compromise reproductive success of females and may select against an association between T and aggression during breeding.…”

Section: Discussionmentioning

confidence: 99%

“…However, elevated circulating T may also negatively affect female reproductive physiology and parental behaviour (e.g. Searcy 1988;Fite et al 2005;Rutowska et al 2005). Hence, selective pressures might be expected to favour increased secretion of testosterone in association with aggressive behaviour in females only during certain contexts, and a dissociation of T and aggression in others.…”

Section: Introductionmentioning

confidence: 99%

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Context matters: female aggression and testosterone in a year-round territorial neotropical songbird ( Thryothorus leucotis )

2007

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Testosterone promotes aggressive behaviour in male vertebrates during the breeding season, but the importance of testosterone in female aggression remains unclear. Testosterone has both beneficial and detrimental effects on behaviour and physiology, prompting the hypothesis that selection favours an association between aggression and testosterone only in certain contexts in which intense or persistent aggression may be beneficial. We tested this hypothesis in a year-round territorial female buff-breasted wrens (Thryothorus leucotis), by exposing free-living females to experimental intrusions in different social (either single female or male, or paired decoys) and seasonal (pre-breeding or breeding) contexts. Females responded more aggressively to intrusions by females and pairs than to males. However, female intrusions elicited stronger responses during pre-breeding, whereas responses to pair intrusions were more intense during breeding. Territorial females had elevated testosterone levels after female intrusions and intermediate levels after pair intrusions during pre-breeding, but the levels of testosterone remained low after these intrusions during breeding. These results demonstrate seasonal differences in circulating testosterone following territorial aggression in female buff-breasted wrens and are suggestive of differences according to social context as well. Context-dependent elevation of testosterone implies that selection acts directly on female vertebrates to shape patterns of testosterone secretion.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Context matters: female aggression and testosterone in a year-round territorial neotropical songbird ( Thryothorus leucotis )

2007

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“…Moreover, such elevated levels may require elevated circulating androgen levels in the female, which may, for example, delay or inhibit egg laying (e.g. Clotfelter et al, 2004;Rutkowska et al, 2005; discussed in Groothuis and Schwabl, 2008). Finally, females should be able to respond differently to the chick trait influenced by yolk androgens than males.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Yolk androgens do not appear to mediate sexual conflict over parental investment in the collared flycatcher Ficedula albicollis

Ruuskanen

Tschirren

Pitala

et al. 2009

Hormones and Behavior

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Yolk androgens do not appear to mediate sexual conflict over parental investment in the collared flycatcher Ficedula albicollis Ruuskanen, Suvi; Doligez, Blandine; Tschirren, Barbara; Pitala, Natalia; Gustafsson, Lars; Groothuis, Ton G. G.; Laaksonen, Toni Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Males and females are in conflict over parental care, as it would be favourable for one parent to shift labour to the other. Yolk hormones may offer a mechanism through which female birds could influence offspring traits in ways that increase the relative investment by the male. We studied the role of yolk androgens in mediating sexual conflict over parental care in the collared flycatcher (Ficedula albicollis). In a cross-fostering experiment, the male's proportion of total feeding visits increased with increasing androgen levels in the foster eggs. This could suggest that sexual conflict over parental care may be influenced by the female's differential allocation of yolk androgens or a maternal effect associated with yolk androgens. However, when we experimentally elevated yolk androgen levels, male feeding rates did not differ between control and androgen-manipulated nests. This suggests that other egg components correlated with yolk androgen levels, rather than yolk androgen levels per se, may influence male parental effort. In conclusion, yolk androgens per se do not appear to mediate sexual conflict over parental investment in the collared flycatcher.

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“…However, in contrast to males, this prolonged sensitivity to T in females has mainly 87 been associated with costs that could reduce reproductive success. For example, experimentally 88 prolonged elevated T levels have been shown to delay the onset of egg laying (Searcy, 1988; dark-eyed 89 junco , Clotfelter et al, 2004 ; zebra finch (Teaniopygia guttata), Rutkowska et al, 2005), decrease 90 incubation temperature (Rosvall, 2013a and in various passerine birds. In other passerine species, however, prolonged 94 experimentally elevated T levels does not affect the onset of egg laying (de Jong, 2013) or incubation 95 behaviour (European starling, Sandell et al, unpublished manuscript cited in Ketterson et al, 2005).…”

Section: Introduction 56mentioning

confidence: 99%

Effects of experimentally sustained elevated testosterone on incubation behaviour and reproductive success in female great tits (Parus major)

Jong¹,

Lens

Amininasab³

et al. 2016

General and Comparative Endocrinology

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Negative effects of elevated testosterone on female fecundity in zebra finches

Cited by 89 publications

References 34 publications

Context matters: female aggression and testosterone in a year-round territorial neotropical songbird ( Thryothorus leucotis )

Context matters: female aggression and testosterone in a year-round territorial neotropical songbird ( Thryothorus leucotis )

Yolk androgens do not appear to mediate sexual conflict over parental investment in the collared flycatcher Ficedula albicollis

Effects of experimentally sustained elevated testosterone on incubation behaviour and reproductive success in female great tits (Parus major)

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