Density dependence of developmental instability in a dimorphic ungulate

Serrano, Emmanuel; Angibault, Jean‐Marc; Cargnelutti, Bruno; Hewison, A. J. Mark

doi:10.1098/rsbl.2008.0221

Cited by 15 publications

(12 citation statements)

References 21 publications

(25 reference statements)

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“…In addition, males exhibited greater mean positional FA than females, a pattern also observed for FA in some traits of Drosophila (Vishalakshi & Singh, 2006). The male phenotype may be affected more strongly by deleterious mutations (Agrawal, 2001b), environmental factors (Serrano et al. , 2008), or genotype × environment interactions (Gurganus et al.…”

Section: Discussionmentioning

confidence: 99%

Condition dependence of developmental stability in the sexually dimorphic flyTelostylinus angusticollis(Diptera: Neriidae)

Bonduriansky

2009

J of Evolutionary Biology

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Developmental stability is widely regarded as a condition‐dependent trait, but its relation to genotype and environment, and extent of developmental integration, remain contentious. In Telostylinus angusticollis, the dorsocentral bristles exhibit striking variation in developmental stability, manifested as fluctuating asymmetry (FA) in bristle position (‘positional FA’) and failure to develop some bristles (‘bristle loss’), in natural and laboratory populations. To determine whether this variation reflects condition, I tested for effects of genotype and environment (larval diet quality), and examined covariation with condition‐dependent traits. Positional FA was not affected by genotype or environment. However, positional FA covaried negatively with secondary sexual trait expression in males, and with sexual dimorphism in body shape, but covaried positively with body size in females. Bristle loss reflected both genotype and larval diet. Flies reared on poor‐quality diet exhibited a similar rate of bristle loss as wild flies. Both positional FA and bristle loss were greater in males. These results suggest that the relation between developmental stability and condition is complex and sex dependent.

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Section: Discussionmentioning

confidence: 99%

Condition dependence of developmental stability in the sexually dimorphic flyTelostylinus angusticollis(Diptera: Neriidae)

Bonduriansky

2009

J of Evolutionary Biology

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“…Such sex-related associations between stress and FA have rarely been studied and documented. The examples include a fallow deer (Serrano et al 2008) and a fly (Bonduriansky 2009). We cannot nevertheless infer causality or overrule the possibility that corticosterone levels merely better reflect stress in males than in females.…”

Section: Discussionmentioning

confidence: 99%

Fluctuating feather asymmetry in relation to corticosterone levels is sex-dependent in Eurasian treecreeper (Certhia familiaris) nestlings

Helle

Suorsa

Huhta³

et al. 2010

Biol. Lett.

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Fluctuating asymmetry (FA) has been widely used as a stress-related phenotypic marker of developmental instability. However, previous studies relating FA to various stressful conditions have produced inconsistent results and we still lack quantitative individual-level evidence that high FA is related to stress in wild vertebrate species. We studied how baseline plasma levels of corticosterone predicted FA of wing and tail feathers in free-living Eurasian treecreeper (Certhia familiaris) nestlings. We found a sexspecific association between corticosterone levels and FA: high corticosterone levels were related to an increased FA in male but not in female nestlings. These results suggest that in treecreepers, FA may correlate with individual stress hormone levels, male developmental trajectory being potentially more sensitive to stress than that of the female.

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“…, Anciães and Marini , Weller and Gazhorn , Serrano et al . , Sherman et al . , Allenbach , Schmeller et al .…”

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confidence: 99%

Trend in Pacific walrus (Odobenus rosmarus divergens)tusk asymmetry, 1990–2014

MacCracken

Benter

2015

Marine Mammal Science

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We used the basal circumference of Pacific walrus (Odobenus rosmarus divergens) tusks (upper canine teeth, n = 21,068 pairs) to estimate fluctuating asymmetry (FA1 index) from 1990 to 2014. The mean difference in circumference between paired tusks was -0.006 (SEM = 0.002) cm and approximately normally distributed. Measurement error was 0.6 (0.02)%, similar between biologists and lay persons (P = 0.83), and ≤15% of FA1. Tusk FA1 was greatest in 1990 then declined by 56% (P = 0.0001) through 2014. Male and female trends differed (P = 0.0001) and male FA1 was 40% greater (P = 0.0001) and the rate of decline 28% steeper (P = 0.3) than females. A quartic polynomial model (r 2 = 0.66, w i = 0.685) fit the trend for female data better than simpler forms, whereas a linear model (r 2 = 0.55, w i = 0.693) was a better fit for male data. Walrus tusk FA1 reflected periods when the population was stressed due to food limitations and then recovered, and perhaps when females began to experience the loss of preferred sea ice habitat in summer and FA1 is an easily monitored indicator. More work is needed to confirm the link between FA1, individual fitness, and adaptive potential.

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Density dependence of developmental instability in a dimorphic ungulate

Cited by 15 publications

References 21 publications

Condition dependence of developmental stability in the sexually dimorphic flyTelostylinus angusticollis(Diptera: Neriidae)

Condition dependence of developmental stability in the sexually dimorphic flyTelostylinus angusticollis(Diptera: Neriidae)

Fluctuating feather asymmetry in relation to corticosterone levels is sex-dependent in Eurasian treecreeper (Certhia familiaris) nestlings

Trend in Pacific walrus (Odobenus rosmarus divergens)tusk asymmetry, 1990–2014

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