Density-dependent reproductive success in Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Assie, L. K.; Brostaux, Yves; Haubruge, Éric

doi:10.1016/j.jspr.2008.02.007

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…One possible confounding factor is body mass because female body mass is often correlated with both reproductive success and mating success (Assie et al, 2008;Blums & Clark, 2004;Wauters & Dhondt, 1995). We indeed found support that female body size predicts mating success and reproductive success in T. castaneum, but Bateman gradients remained overall positive in both sexes after correcting statistically for individual differences in body mass.…”

Section: Sexsupporting

confidence: 63%

Population density affects sexual selection in an insect model

Winkler,

Eilhardt,

Janicke

2023

Functional Ecology

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Understanding the impact of demographic and ecological factors on the strength of sexual selection is pivotal to predict eco‐evolutionary dynamics in populations facing environmental change. Density is expected to show pervasive intra‐ and interspecific variation in natural populations, but its effect on sexual selection remains largely unexplored. We tested experimentally the effect of density on standardized metrics of sexual selection in male and female red flour beetles. Specifically, we explored density effects during mating by manipulating the size of mating groups and the mating arena. We found that higher densities imposed by a larger group size amplified the opportunity for pre‐copulatory sexual selection in females and, to a smaller extent, also in males. Moreover, in males, we detected a higher opportunity for post‐copulatory sexual selection in larger groups. By contrast, higher densities imposed by differences in the size of the mating arena resulted in a steeper male sexual selection gradient. Overall, these data suggest that density is an important environmental factor contributing to the tremendous variation in the strength of sexual selection within and among species. Read the free Plain Language Summary for this article on the Journal blog.

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Section: Sexsupporting

confidence: 63%

Population density affects sexual selection in an insect model

Winkler,

Eilhardt,

Janicke

2023

Functional Ecology

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“…2005; Ramsay et al . 2006; Assie et al . 2008; Reading & Clark 2010) may be irreversible, preventing females from optimizing their oviposition behaviours even under favourable conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Hence, the behaviour of aged young HD females appears to be maladaptive. We speculate that early physiological changes due to high density (Forchhammer et al 2001;Stewart et al 2005;Ramsay et al 2006;Assie et al 2008;Reading & Clark 2010) may be irreversible, preventing females from optimizing their oviposition behaviours even under favourable conditions. Such "carry-over effects" are widespread in the animal kingdom (Boonstra et al 1998;Van Allen & Rudolf 2013;Burgess & Marshall 2014) and can impact the choice of the colonized habitat.…”

Section: Discussionmentioning

confidence: 99%

“…As a result, we expect flour beetles to experience strong selection to rapidly respond to changes in competition and alter oviposition behaviours. We speculate that early physiological changes due to high density (47–51) may be irreversible, preventing females from optimizing their oviposition behaviours even under favourable conditions. Such “carry-over effects” are widespread in the animal kingdom (52–54).…”

Section: Discussionmentioning

confidence: 99%

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Fitness Landscapes Reveal Context-dependent Benefits of Oviposition Choice

Agavekar

Agashe

2021

Preprint

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Resource choice behaviour has enormous fitness consequences and can drive niche expansion. However, individual behavioural choices are often mediated by past experience. Are such context-dependent behaviours adaptive? Using the red flour beetle, we demonstrate that context-dependent oviposition choice indeed reflects distinct, context-specific local fitness peaks. Manipulating female egg allocation in a habitat containing optimal and novel resource patches, we measured offspring fitness to generate fitness landscapes as a function of all possible oviposition behaviours (i.e. combinations of fecundity and resource preference). Females from different age and density contexts exhibit distinct behaviours that optimize different fitness components. With increasing age and experienced population density, they produce few but fast-developing offspring that are advantageous under high resource competition; whereas young naive females produce many slow-developing offspring, which is beneficial under weak competition. Systematically mapping complete context-dependent fitness landscapes is thus critical to infer behavioural optimality, and offers predictive power in novel contexts.

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“…Larval development is slowed by increasing larval and adult density (Park et al 1939 ; Janus 1989 ). Higher density during development also has indirect negative effects on future reproductive success through reduced body weight (Assie et al 2008 ). Dispersal increases with density (Ziegler 1978 ) and there is evidence that the genetic bases of dispersal and the reduction of oviposition in response to conditioning are linked (Lavie and Ritte 1980 , see also ‘Life history’ below).…”

Section: Population Dynamicsmentioning

confidence: 99%

Tribolium beetles as a model system in evolution and ecology

2021

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Flour beetles of the genus Tribolium have been utilised as informative study systems for over a century and contributed to major advances across many fields. This review serves to highlight the significant historical contribution that Tribolium study systems have made to the fields of ecology and evolution, and to promote their use as contemporary research models. We review the broad range of studies employing Tribolium to make significant advances in ecology and evolution. We show that research using Tribolium beetles has contributed a substantial amount to evolutionary and ecological understanding, especially in the fields of population dynamics, reproduction and sexual selection, population and quantitative genetics, and behaviour, physiology and life history. We propose a number of future research opportunities using Tribolium, with particular focus on how their amenability to forward and reverse genetic manipulation may provide a valuable complement to other insect models.

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Density-dependent reproductive success in Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Cited by 10 publications

References 17 publications

Population density affects sexual selection in an insect model

Population density affects sexual selection in an insect model

Fitness Landscapes Reveal Context-dependent Benefits of Oviposition Choice

Tribolium beetles as a model system in evolution and ecology

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