Male development tracks rapidly shifting sexual versus natural selection pressures

Kasumovic, Michael M.; Andrade, Maydianne C. B.

doi:10.1016/j.cub.2006.03.017

Cited by 80 publications

(99 citation statements)

References 17 publications

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“…One hundred and twelve penultimate instar males were randomly assigned to rearing in the presence or absence of females, mimicking extremes of female density in nature. Female presence was crossed with three diets: high-and mid-diet males were fed three times/week (six and three D. melanogaster, respectively), while low-diet males received one D. melanogaster each week until maturity (see Kasumovic & Andrade 2006 for details).…”

Section: Methodsmentioning

confidence: 99%

“…We noted the date of the final moult, measured (mean patellatibia length of the first legs) and weighed (+0.01 mg) adults, and estimated condition as residuals of log 10 weight 0.333 regressed on log 10 size (see Kasumovic & Andrade 2006 for justification). Males were held individually without feeding (mimicking natural cessation of prey capture, Foelix 1982) until death.…”

Section: Methodsmentioning

confidence: 99%

“…The effects of diet on adult lifespan are complex, as acquired resources are shared between regulatory processes such as somatic repair (Hughes & Reynolds 2005;Lopez-Lluch et al 2006), and growth and reproduction (Hunt et al 2004;Kasumovic & Andrade 2006). Further, reproductive trade-offs are dietmediated (Mappes et al 1996;Hunt et al 2004) and resources allocated to current reproduction cannot be allocated for other purposes or stored for later use (Van Noordwijk & De Jong 1986).…”

Section: Introductionmentioning

confidence: 99%

“…Redback males cease capturing prey as adults (common for male web-building spiders, Foelix 1982), and they depend on resources acquired and stored as juveniles to sustain them as they search for, court and mate with females (Kasumovic et al 2007). Male development time and body condition are adaptively plastic traits that vary in response to diet, female presence and male density (Kasumovic & Andrade 2006. In the presence of females, males mature rapidly, sacrificing condition to reach virgin females quickly, and thereby inseminate them first (Snow & Andrade 2005;Kasumovic & Andrade 2006).…”

Section: Introductionmentioning

confidence: 99%

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Body condition but not dietary restriction prolongs lifespan in a semelparous capital breeder

2009

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Effects of diet on longevity are complex because acquired resources are shared among growth, reproduction and somatic maintenance. We simplify these axes by examining how dietary restriction and competitive contexts affect longevity using semelparous males of the Australian redback spider (Latrodectus hasselti). Plastic development of L. hasselti males results in trade-offs of body condition against faster development if females are present, facilitating scramble competition. In the absence of females, males develop slowly as high body condition adults, and are better equipped for mate searching. Here we focus on effects of diet and competitive context on body condition and longevity. Although male survival depended on body condition and exercise, contrary to studies in a wide range of taxa, dietary restriction did not increase longevity. However, there was an interactive effect of diet and competitive context on lifespan, because high-diet males reared in the absence of females lived longer than males reared in the presence of females. Thus males near females pay a survival cost of developing rapidly. This shows that life-history trade-offs affected by competitive context can impose longevity costs independent of the direct energy expenditure of searching, courtship, competition or reproduction.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Body condition but not dietary restriction prolongs lifespan in a semelparous capital breeder

2009

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“…As no single phenotype is ideal 72 for every possible social context, shifts in developmental trajectories in response to reliable 73 social cues can result in improved phenotype-environment matching and increased fitness 74 Kasumovic & Andrade, 2006;Kasumovic & Andrade, 2009). Social 75 information gleaned during immaturity can also alter how individuals behave at maturity in 76 their mate preferences and in how intensely they compete (Kasumovic,77 Hall & Brooks, 2012; Bussiere et al, 2005).…”

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confidence: 99%

Development rate rather than social environment influences cognitive performance in Australian black field crickets, Teleogryllus commodus

Anderson

Kasumovic

2017

Preprint

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Cognitive functioning is vital for enabling animals of all taxa to optimise their chances of survival and reproductive success. Learning and memory in particular are drivers of many evolutionary processes. The field of cognitive ecology explores how the environment can affect investment into cognitive capacity and learning ability. In this study, we examine how developmental plasticity can affect cognitive ability by exploring the role of early social environment on influencing problem solving ability and learning of female black field crickets, Teleogryllus commodus. We used two learning paradigms, an analog of the Morris water maze and a novel linear maze, to examine cognitive differences between individuals Cognitive functioning is vital for enabling animals of all taxa to optimise their chances of 12 survival and reproductive success. Learning and memory in particular are drivers of many 13 evolutionary processes. The field of cognitive ecology explores how the environment can affect 14 investment into cognitive capacity and learning ability. In this study, we examine how 15 developmental plasticity can affect cognitive ability by exploring the role of early social 16 environment on influencing problem solving ability and learning of female black field crickets, 17 Teleogryllus commodus. We used two learning paradigms, an analog of the Morris water maze 18 and a novel linear maze, to examine cognitive differences between individuals reared in two 19 acoustic treatments: silence or calling. Although there was no evidence of learning or memory, 20 individuals that took longer to mature solved the Morris water maze more quickly. This 21 suggests that increased investment into cognitive development is likely associated with 22 increased development time during immature stages. Inconsistent individual performance and 23 motivation during the novel linear maze task highlights the difficulties of designing ecologically 24 relevant learning tasks within a lab setting. The role of experimental design in understanding 25 cognitive ability and learning in more natural circumstances is discussed.

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The juvenile social environment introduces variation in the choice and expression of sexually selected traits

Kasumovic

Hall

Brooks

2012

Ecology and Evolution

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The juvenile environment provides numerous cues of the intensity of competition and the availability of mates in the near environment. As research demonstrates that the developing individuals can use these cues to alter their developmental trajectories, and therefore, adult phenotypes, we examined whether social cues available during development can affect the expression and the preference of sexually selected traits. To examine this, we used the Australian black field cricket (Telogryllus commodus), a species where condition at maturity is known to affect both male calling effort and female choice. We mimicked different social environments by rearing juveniles in two different densities crossed with three different calling environments. We demonstrate that the social environment affected female response speed but not preference, and male age‐specific calling effort (especially the rate of senescence in calling effort) but not the structural/temporal parameters of calls. These results demonstrate that the social environment can introduce variation in sexually selected traits by modifying the behavioral components of male production and female choice, suggesting that the social environment may be an overlooked source of phenotypic variation. We discuss the plasticity of trait expression and preference in reference to estimations of male quality and the concept of condition dependence.

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Male development tracks rapidly shifting sexual versus natural selection pressures

Cited by 80 publications

References 17 publications

Body condition but not dietary restriction prolongs lifespan in a semelparous capital breeder

Body condition but not dietary restriction prolongs lifespan in a semelparous capital breeder

Development rate rather than social environment influences cognitive performance in Australian black field crickets, Teleogryllus commodus

The juvenile social environment introduces variation in the choice and expression of sexually selected traits

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