European robins (Erithacus rubecula) lack an increase in testosterone during simulated territorial intrusions

Scriba, Madeleine F.; Goymann, Wolfgang

doi:10.1007/s10336-010-0493-0

Cited by 17 publications

(11 citation statements)

References 60 publications

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“…Unlike the song sparrow and a few other species, the majority of birds tested so far do not show a testosterone surge after simulated territorial intrusions (see [14][15][16][17][18][19][20][21][22][23] for recent studies and a review [24] for studies conducted before 2007). This includes the black redstart (Phoenicurus ochruros), a socially monogamous and bi-parental songbird of the western Palaearctic, and our main study species regarding territorial aggression (e.g.…”

Section: Introductionmentioning

confidence: 94%

Does a short-term increase in testosterone affect the intensity or persistence of territorial aggression? — An approach using an individual's hormonal reactive scope to study hormonal effects on behavior

Goymann

Villavicencio

Apfelbeck

2015

Physiology & Behavior

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Section: Introductionmentioning

confidence: 94%

Does a short-term increase in testosterone affect the intensity or persistence of territorial aggression? — An approach using an individual's hormonal reactive scope to study hormonal effects on behavior

Goymann

Villavicencio

Apfelbeck

2015

Physiology & Behavior

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“…Harding & Follett ; Wingfield ; Pärn et al . ; Scriba & Goymann ). Because antagonistic interactions and other territorial intrusions are predicted to increase as population density rises (e.g.…”

Section: Effect Of the Social Environment On The Stress Axis In Terrimentioning

confidence: 99%

The ecology of stress: effects of the social environment

et al. 2012

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Summary Many aspects of the social environment affect hypothalamic‐pituitary‐adrenal (HPA) axis function and increase circulating glucocorticoid concentrations. In this review, we examine the relationships between the social environment and the function of the HPA axis in vertebrates. First, we explore the effects of the social environment on glucocorticoid secretion in territorial (primarily non‐social) species, with an emphasis on the effects of variation in population density, as modified by environmental factors such as predation risk and food availability. In general, high population density or frequent territorial intrusions are associated with increased glucocorticoid secretion in a wide range of taxa, including mammals, birds, fish and reptiles, although there is considerable variability across species. Second, we consider the effects of social interactions and dominance rank on glucocorticoid secretion in social species, mostly in birds and mammals. We review studies that have detected an association between social status and glucocorticoid levels – sometimes with higher glucocorticoid levels in low‐ranking individuals, and sometimes with higher glucocorticoid levels in dominant individuals. The relationship between dominance and glucocorticoid levels varies among species, populations and years, in a manner that depends on the stability of the social hierarchy, environmental conditions, the type of breeding system, and the manner in which high rank is obtained and maintained. Finally, we discuss the concept of allostasis and consider interactions between social effects and other environmental factors, noting that there is relatively little research on these interactions to date. For both non‐social and social species, we identify priorities of future research. These priorities include more complete descriptions of HPA function that move beyond measurements of basal glucocorticoid concentrations (which will generally require field experiments), to studies that examine organizational effects of social stressors, that directly test the relationship between HPA function and fitness, and that examine how glucocorticoid responses affect population dynamics. Although several lines of evidence suggest that glucocorticoid responses can affect the fitness of individuals and therefore can alter the dynamics of populations, the effect of glucocorticoid responses on population dynamics remains essentially unstudied.

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“…While most studies report T or CORT elevation 10 to 30 min after the initiation of an STI (Landys et al, 2007; McGlothlin et al, 2008; Van Duyse et al, 2004; Wingfield and Wada, 1989), other species may require significantly more time to elevate hormone levels (Wikelski et al, 1999). In addition, the type of decoy (taxidermic or live) has varied from study to study and may affect hormone signaling (Scriba and Goymann, 2008; Scriba and Goymann, 2010), suggesting that different sensory modalities may influence the degree to which a social challenge leads to an elevation in T or CORT.…”

Section: Introductionmentioning

confidence: 99%

Robust behavioral effects of song playback in the absence of testosterone or corticosterone release

Rosvall

Reichard

Ferguson

et al. 2012

Hormones and Behavior

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Some species of songbirds elevate testosterone in response to territorial intrusions while others do not. The search for a general explanation for this interspecific variation in hormonal response to social challenges has been impeded by methodological differences among studies. We asked whether song playback alone is sufficient to bring about elevation in testosterone or corticosterone in the dark-eyed junco (Junco hyemalis), a species that has previously demonstrated significant testosterone elevation in response to a simulated territorial intrusion when song was accompanied by a live decoy. We studied two populations of juncos that differ in length of breeding season (6–8 v. 14–16 weeks), and conducted playbacks of high amplitude, long-range song. In one population, we also played low amplitude, short-range song, a highly potent elicitor of aggression in juncos and many songbirds. We observed strong aggressive responses to both types of song, but no detectable elevation of plasma testosterone or corticosterone in either population. We also measured rise in corticosterone in response to handling post-playback, and found full capacity to elevate corticosterone but no effect of song class (long-range or short-range) on elevation. Collectively, our data suggest that males can mount an aggressive response to playback without a change in testosterone or corticosterone, despite the ability to alter these hormones during other types of social interactions. We discuss the observed decoupling of circulating hormones and aggression in relation to mechanisms of behavior and the cues that may activate the HPA and HPG axes.

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European robins (Erithacus rubecula) lack an increase in testosterone during simulated territorial intrusions

Cited by 17 publications

References 60 publications

Does a short-term increase in testosterone affect the intensity or persistence of territorial aggression? — An approach using an individual's hormonal reactive scope to study hormonal effects on behavior

Does a short-term increase in testosterone affect the intensity or persistence of territorial aggression? — An approach using an individual's hormonal reactive scope to study hormonal effects on behavior

The ecology of stress: effects of the social environment

Robust behavioral effects of song playback in the absence of testosterone or corticosterone release

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