The energetic basis of acoustic communication

Gillooly, James F.; Ophir, Alexander G.

doi:10.1098/rspb.2009.2134

Cited by 150 publications

(140 citation statements)

References 50 publications

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“…Tradeoffs between male traits preferred by females may be common, and may help to explain broad patterns of correlated trait evolution. For example, there is a negative correlation between call rate and duration across a large taxonomic range of acoustic animals [49], despite the fact that sexual selection commonly favours males with both faster and longer calls [50].…”

Section: Discussionmentioning

confidence: 99%

Tradeoffs limit the evolution of male traits that are attractive to females

et al. 2012

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Tradeoffs occur between a variety of traits in a diversity of organisms, and these tradeoffs can have major effects on ecological and evolutionary processes. Far less is known, however, about tradeoffs between male traits that affect mate attraction than about tradeoffs between other types of traits. Previous results indicate that females of the variable field cricket, Gryllus lineaticeps, prefer male songs with higher chirp rates and longer chirp durations. In the current study, we tested the hypothesis that a tradeoff between these traits affects the evolution of male song. The two traits were negatively correlated among full-sibling families, consistent with a genetically based tradeoff, and the tradeoff was stronger when nutrients were limiting. In addition, for males from 12 populations reared in a common environment, the traits were negatively correlated within populations, the strength of the tradeoff was largely invariant across populations, and the within-population tradeoff predicted how the traits have evolved among populations. A widespread tradeoff thus affects male trait evolution. Finally, for males from four populations assayed in the field, the traits were negatively correlated within and among populations. The tradeoff is thus robust to the presence of environmental factors that might mask its effects. Together, our results indicate there is a fundamental tradeoff between male traits that: (i) limits the ability of males to produce multiple attractive traits; (ii) limits how male traits evolve; and (iii) might favour plasticity in female mating preferences.

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Section: Discussionmentioning

confidence: 99%

Tradeoffs limit the evolution of male traits that are attractive to females

et al. 2012

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“…Several authors have suggested that conclusions are most firmly established if similar results appear both in contrast analyses and in analyses using species as data points (37)(38)(39). When results are presented graphically, using species has another advantage of allowing the graph to show species characteristics, such as lifestyle.…”

Section: Figmentioning

confidence: 98%

A conserved pattern of brain scaling from sharks to primates

Yopak

Lisney

Darlington

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

162

211

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Several patterns of brain allometry previously observed in mammals have been found to hold for sharks and related taxa (chondrichthyans) as well. In each clade, the relative size of brain parts, with the notable exception of the olfactory bulbs, is highly predictable from the total brain size. Compared with total brain mass, each part scales with a characteristic slope, which is highest for the telencephalon and cerebellum. In addition, cerebellar foliation reflects both absolute and relative cerebellar size, in a manner analogous to mammalian cortical gyrification. This conserved pattern of brain scaling suggests that the fundamental brain plan that evolved in early vertebrates permits appropriate scaling in response to a range of factors, including phylogeny and ecology, where neural mass may be added and subtracted without compromising basic function.T he allometric relationship of brain parts to overall brain size has been studied and debated extensively (1-7). At the core of the debate lies the question of whether the brain is best characterized as a collection of independently varying structures/devices evolved for particular behavioral requirements or niches or as a single coordinated processing structure/device in which adaptation for species-specific behavioral capacities occurs without the production of delineable modules (8, 9). Many methodological issues have arisen as well, including what about a brain should be quantified [cells or volumes (10)], what should be compared and how, and how to take into account the statistical dependence of both structural and species relationships (11).Until recently, a single data corpus comprising primates, bats, and insectivorous mammals was the sole source for comparison (2), leaving the question of whether these mammals represented all vertebrates, or even all other mammals, unresolved. The addition of carnivorous mammals (including marine mammals), ungulates, xenarthrans, and the manatee demonstrated that the original conclusions drawn from primates, bats, and insectivores could be extended to this larger data set (8, 12). These studies revealed that mammalian brain structure exhibits a pattern of variation containing two principal components. The first component, accounting for ≈96% of the total variance of related brain parts to total brain size, loads most highly on neocortex and cerebellum. The second component loads most highly on the olfactory bulb and associated limbic structures and accounts for ≈3% of the original variance. Each brain part also has a characteristic slope with respect to absolute brain size, such that every large mammalian brain is composed disproportionately of neocortex and cerebellum. The remaining 1% of the variance must subsume all remaining sources, including niche, sex and individual differences, and measurement error. This 1% contribution is large in one sense: In two species with the same brain size, a single structure might differ by a factor of 2.5. The total range of structure sizes may differ by a factor of 100,000 or more b...

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“…Acoustic communication is heavily dependent on the energy generated from metabolism [92] and may be particularly influenced by suboptimal mitochondrial function. A recent comparative study of the metabolic costs of calling revealed that the energy cost of calling in ectotherms averages eight times the resting metabolic rate [93].…”

Section: Oxidative Stress In the Twenty-first Centurymentioning

confidence: 99%

Oxidative stress and condition-dependent sexual signals: more than just seeing red

Garratt

Brooks

2012

Proc. R. Soc. B.

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The links between fitness, health, sexual signals and mate choice are complex and subject to ongoing study. In 1999, von Schantz et al. made the valuable suggestion that oxidative stress may be an important missing piece of this complex puzzle. Their suggestion has been enthusiastically tested, with over 300 studies citing their paper, but most effort has concerned carotenoid-based (and to a lesser extent melaninbased) visual signals, predominantly in birds and fishes. Today, we know a great deal more about oxidative stress and related physiology, in both a pathological and regulatory sense, than we did in 1999. We revisit von Schantz et al.'s predictions and, more importantly, highlight novel mechanisms that could link oxidative stress with a range of energetically demanding signals, greatly increasing the scope from visual signalling systems that are usually discussed and nearly always tested. In particular, we argue that differences between individuals in their ability to regulate physiology related to oxidative stress may be an important factor influencing the production of sexual signals and the costs that are incurred from investment.

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The energetic basis of acoustic communication

Cited by 150 publications

References 50 publications

Tradeoffs limit the evolution of male traits that are attractive to females

Tradeoffs limit the evolution of male traits that are attractive to females

A conserved pattern of brain scaling from sharks to primates

Oxidative stress and condition-dependent sexual signals: more than just seeing red

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