High relatedness and inbreeding in two species of haplodiploid eusocial thrips (Insecta: Thysanoptera) revealed by microsatellite analysis

@article{Chapman1998HighRA,
  title={High relatedness and inbreeding in two species of haplodiploid eusocial thrips (Insecta: Thysanoptera) revealed by microsatellite analysis},
  author={Thomas W. Chapman and Bernard J. Crespi},
  journal={Behavioral Ecology and Sociobiology},
  year={1998},
  volume={43},
  pages={301-306}
}
Abstract Relatedness and inbreeding coefficients were estimated for Oncothrips tepperi and O. habrus, two species of eusocial gall-forming thrips, using data from two microsatellite loci. Relatedness between sets of individuals (sexes and castes) for O. tepperi ranged from 0.5 to 0.85 and for O. habrus estimates were centered around 0.5. Multiple mating in O. habrus was implicated in lowering relatedness within a gall. We estimated the inbreeding coefficient to be 0.38 for both species, the… 
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33 Citations

The Evolutionary Ecology of Eusociality in Australian Gall Thrips: a ‘Model Clades’ Approach

TLDR
Analysis of the associations between genetic and ecological traits that resulted from the social-adaptive radiation of gall thrips with soldiers provides two main insights: first, fewer matings by foundresses, and less mating after dispersal, result in stronger local mate competition, higher relatedness (and a higher inbreeding coefficient) among soldier females, and a stronger female bias in dispersers.

Inbreeding ancestors: the role of sibmating in the social evolution of gall thrips.

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Microsatellite data used to estimate levels of inbreeding in four species of solitary gall thrips on Australian Acacia showed that the ancestral lineage that gave rise to soldiers was apparently highly inbred, and therefore, inbreeding could have played a role in the origin of sociality within this group.

The evolution of soldier reproduction in social thrips

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This is the first study to analyze the social-evolutionary trajectories of reproductive, behavioral, and morphological differentiation in the context of a species-level phylogeny and suggests that this difference in evolutionary routes to eusociality between taxa with soldiers andTaxa with foraging workers was driven by a weaker trade-off between helping and reproducing, and a greater ability of the helpers to withstand reproductive domination, in taxas with soldiers.

Phylogenetics of Australian Acacia thrips: the evolution of behaviour and ecology.

Life history of Kladothrips ellobus and Oncothrips rodwayi: insight into the origin and loss of soldiers in gall‐inducing thrips

TLDR
The life history of two solitary, gall‐inducing thrips and Oncothrips rodwayi was investigated, and data for solitary and eusocial species from previous studies were re‐analysed.

A fully reproductive fighting morph in a soldier clade of gall-inducing thrips (Oncothrips morrisi)

TLDR
The first life history data for Oncothrips morrisi, a species in a clade of haplodiploid, Australian gall-inducing thrips that has a micropteran fighting morph in the first generation of the gall, is presented, and selection to defend one's offspring may have promoted the evolution of soldier-like morphology and behaviour.

Social biology and sex ratios in the gall-inducing thrips, Oncothrips waterhousei and Oncothrips habrus

TLDR
A comparison of the proportion of the gall occupied by brood in O. waterhousei and another eusocial galling thrips, Kladothrips hamiltoni, suggests that local resource competition is higher in K. ham Miltoni, which might partly explain the lack of sex ratio bias in soldiers of the latter species.

Sib‐mating in the ant Plagiolepis pygmaea: adaptative inbreeding?

TLDR
The data show that workers actively repel unrelated males entering their colony, and that queens preferentially mate with related males, consistent with inclusive fitness being a driving force for inbreeding: by preventing outbreeding, workers reduce erosion of relatedness within colonies due to polygyny and polyandry.

Phylogenetics of gall-inducing thrips on Australian Acacia

TLDR
Examination of the distribution of the three primary life history strategies employed by gall-inducing thrips indicates that two of the strategies may have evolved as a result of factors associated with host plant affiliations or through parasite pressure, but the phylogeny does not support the existing generic classification of the group.

Natural history and description of Oncothrips kinchega, a new species of gall-inducing thrips with soldiers (Thysanoptera: Phlaeothripidae)

A new species of gall-inducing thrips, Oncothrips kinchega sp. n., is described and its biology on the host plant Acacia carneorum was investigated. Our study showed that a single foundress initiates…

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