Egg Size Plasticity in a Seed Beetle: An Adaptive Maternal Effect

@article{Fox1997EggSP,
  title={Egg Size Plasticity in a Seed Beetle: An Adaptive Maternal Effect},
  author={Charles W. Fox and Monica S Thakar and Timothy A Mousseau},
  journal={The American Naturalist},
  year={1997},
  volume={149},
  pages={149 - 163}
}
In the seed beetle, Stator limbatus, the fitness consequences of egg size vary substantially among host plants. There is intense selection for laying large eggs when larvae will develop on seeds of Cercidium floridum (caused by high mortality penetrating the seed coat) but selection for laying small eggs when larvae will develop on seeds of Acacia greggii (caused by very low mortality penetrating the seed coat and an egg size/egg number trade-off). We test the hypothesis that host-associated… 

Larval host plant affects fitness consequences of egg size variation in the seed beetle Stator limbatus

TLDR
Examining the consequences of egg size variation for survivorship and development of a seed-feeding insect, Stator limbatus, on both a low- quality (Cercidium floridum) and a high-quality (Acacia greggii) host plant indicates intense selection for large eggs within C. florIDum-associated populations, but not in A. greggII-associated population, so that egg size is predicted to vary among populations associated with different hosts.

Proximate Mechanisms Influencing Egg Size Plasticity in the Seed Beetle Stator limbatus (Coleoptera: Bruchidae)

TLDR
Be Beetles that came into direct contact with seeds adjusted egg size to a much greater extent than beetles that only came in contact with the fruits or were physically separated from the seeds.

Egg-size manipulations in the seed beetle Stator limbatus: consequences for progeny growth

  • C. Fox
  • Environmental Science, Biology
  • 1997
TLDR
I used egg-size plasticity in response to oviposition environment to manipulate egg size in a seed beetle, Stator limbatus, to test the hypothesis that progeny developing from larger eggs survive better, develop faster, and attain a larger adult body size than progeny developed from smaller eggs.

Seed beetle survivorship , growth and egg size plasticity in a paloverde hybrid zone 1

1. Although numerous studies have examined the ecology of plant resistance to herbivores and the distribution of herbivores within plant hybrid zones, few have examined how plant hybridization

EVOLUTIONARY ECOLOGY OF EGG SIZE AND NUMBER IN A SEED BEETLE: GENETIC TRADE-OFF DIFFERS BETWEEN ENVIRONMENTS

TLDR
It was found that the magnitude of the genetic trade-off between egg size and lifetime fecundity differed between environments—a strong trade-offs was estimated when females laid eggs on C. floridum seeds, yet thisTrade-off was weak when females laying eggs on A. greggii seeds.

EVOLUTIONARY ECOLOGY OF EGG SIZE AND NUMBER IN A SEED BEETLE: GENETIC TRADE‐OFF DIFFERS BETWEEN ENVIRONMENTS

  • M. E. CzesakC. Fox
  • Biology, Environmental Science
    Evolution; international journal of organic evolution
  • 2003
TLDR
It was found that the magnitude of the genetic trade-off between egg size and lifetime fecundity differed between environments–a strong trade‐off was estimated when females laid eggs on C. floridum seeds, yet this trade‐offs was weak when females laying eggs on A. greggii seeds.

MATERNAL EFFECTS MEDIATE HOST EXPANSION IN ASEED‐FEEDING BEETLE

TLDR
The test of the hypothesis that oviposition experiences of female S. limbatus on native plants affects the ability of their larvae to develop on seeds of the nonnative Texas ebony demonstrates that maternal effects can influence species interactions within communities, and should be considered when predicting the eco- logical and evolutionary consequences of changing species distributions.

THE EVOLUTIONARY GENETICS OF AN ADAPTIVE MATERNAL EFFECT: EGG SIZE PLASTICITY IN A SEED BEETLE

TLDR
It is found that genetic variation is present within populations for the size of eggs laid on seeds of two host plants (Acacia greggii and Cercidium floridum) and that the heritability of egg size differed between populations and hosts, suggesting egg size plasticity is capable of evolving in response to natural selection.

Selection on body size and sexual size dimorphism differs between host species in a seed‐feeding beetle

TLDR
Differences in host suitability affect the relative importance of two sources of selection on adult body size; fecundity selection on both male and female body size is lower on the poor quality host relative to the high quality host.
...

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