Ecology of Social Evolution 2008
DOI: 10.1007/978-3-540-75957-7_3
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The Evolutionary Ecology of Eusociality in Australian Gall Thrips: a ‘Model Clades’ Approach

Abstract: We integrate phylogenetic information with data on genetic relatedness , inbreeding, sex ratio s, reproductive skew, host-plant use, gall morphology , soldier defensive behavior, kleptoparasite pressure, and demography to evaluate hypotheses for the origin and evolution of soldier caste s in Australian gall thrips . Necessary and sufficient conditions for the single origin of thrips soldiers appear to include high relatedness and inbreeding , strong kleptoparasite pressure, small brood size, and long duration … Show more

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Cited by 19 publications
(15 citation statements)
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“…As for trematode parthenitae, colonies in these systems comprise clonal, separate individuals. However, there are also three sexual systems with a similar soldier caste: some haplodiploid gall thrips [9,38], some diploid wood-nesting termites [1,39] and some diploid sponge-dwelling snapping shrimp [11,40]. All of these systems-whether clonal, haplodiploid sexual or diploid sexual-have traits that fit the 'fortress-defence' model of sociality [3,5,6,18,41].…”
Section: Resultsmentioning
confidence: 99%
“…As for trematode parthenitae, colonies in these systems comprise clonal, separate individuals. However, there are also three sexual systems with a similar soldier caste: some haplodiploid gall thrips [9,38], some diploid wood-nesting termites [1,39] and some diploid sponge-dwelling snapping shrimp [11,40]. All of these systems-whether clonal, haplodiploid sexual or diploid sexual-have traits that fit the 'fortress-defence' model of sociality [3,5,6,18,41].…”
Section: Resultsmentioning
confidence: 99%
“…However, while it has a soldier caste, placing it squarely in the eusocial category [8], Kl. intermedius exhibits an intermediate group size with small brood numbers, small galls and small numbers of soldiers [9,12,13] and, therefore, possesses modest antimicrobial strength, appropriate to its group-size class. Group size probably sets this species apart from other eusocial insect species, such as the stingless bees Trigona, whose colonies contain thousands of individuals and secrete very strong antimicrobials [6].…”
Section: Discussionmentioning
confidence: 99%
“…, 1995; Petersen & Sandström, 2001). Unlike social thrips (Chapman et al. , 2008), spiders (Yip et al.…”
Section: Discussionmentioning
confidence: 99%