Split sex ratios in the social hymenoptera a meta-analysis in Bedford

Invertebrate community richness in New Zealand kiwifruit orchards under organic or integrated pest management. Such variation in agricultural intensification among regions even within the same land-use intensity class could in part be driving observed regional differences in biodiversity responses.

Gardens benefit bees and enhance pollination in intensively managed farmland.

Note that the predictive error should only be compared among models assessing the same response variable, as absolute values depend on the measurement scale. By submitting a comment you agree to abide by our Terms and Community Guidelines. Extinction debt may make matters worse still, if the full impact of land-use changes is not yet evident 18 Powney, G.

Specifically, we hypothesized that bee responses to land-use pressures should vary significantly with region and with taxonomic group i. Ecology and Evolution 4— Multiple comparisons were corrected for using the False Discovery Rate method to adjust significance values 45

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It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide. Workers therefore have to infer mate number from the level of colony genetic diversity, which might be a difficult task particularly if the cost of nepotistic behavior selects against genetically based odor cues Boomsma et al.

One important aspect of the meta-analysis is that despite the small sample size, there was little sign of publication bias. Intraspecific variation in ant sex ratios and the Trivers-Hare hypothesis. Relatedness asymmetry can vary among colonies because of queen replacement, variation in queen mating frequency, and variation in queen number under certain conditions.

Heinze et al.

  • The study of sex allocation in social Hymenoptera ants, bees, and wasps provides an excellent opportunity for testing kin-selection theory and studying conflict resolution.
  • Split sex ratio—a pattern where colonies within a population specialize in either male or queen production—is a widespread phenomenon in ants and other social Hymenoptera. It has often been attributed to variation in colony kin structure, which affects the degree of queen—worker conflict over optimal sex allocation.
  • I present a model demonstrating that, in social Hymenoptera, split sex allocation can influence the evolution of reproductive partitioning skew.
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The data were therefore aggregated to give a variable of combined Land Use and Intensity LUI with the following levels: primary vegetation, secondary vegetation, low-intensity cropland, medium-intensity cropland, high-intensity cropland, pasture, plantation forest and urban.

For example, high-intensity cropland may be more intensive in Western Europe than in South America, with regards to some pressures e. Rogers, S. Gibson, L. Bees are facing declines across the globe as a result of changing and intensifying land use 4 , 17 ,

Split sex ratios in the social hymenoptera a meta-analysis in Bedford

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  • Jan 10,  · Overall, split sex ratio theory explained approximately 20% of the variance in sex allocation among social Hymenoptera colonies exhibiting variation in relatedness asymmetry, which is close to the 25% explained by LMC and LRC in the few species of Cited by: Split sex ratios in the social Hymenoptera: a meta-analysis Joe¨l Meunier,a Stuart A. West,b and Michel Chapuisata aDepartment of Ecology and Evolution, University of Lausanne, Biophore, Lausanne, Switzerland and bInstitute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK The study of sex allocation in social.
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  • Key words: meta-analysis, queen–worker conflict, relatedness asymmetry, sex allocation, social insects, split sex ratio. [Behav Ecol – ()]. We use case studies from the social insects to provide some (1) A meta-​analysis of paternity in birds indicates Bedford () and Cohen () (mini-​review: which males could take advantage of split sex ratios.
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  • We performed a meta-analysis to assess the magnitude of adaptive sex allocation biasing by workers and degree of support for split sex ratio theory in the social Hymenoptera. Split sex ratios in the social Hymenoptera: a meta.
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  • We use case studies from the social insects to provide some concrete examples of the role of genetic A recent meta-analysis of the Bedford () and Cohen () (mini-review: which males could take advantage of split sex ratios. tula Hawk Wasp Hemipepsis ustulata (Hy- Avery, R.A., Bedford, J.D., Newcombe, Group Splitting Within Matrilineal Kin- A Study of Social Group Frank, S.A.: Variable sex ratio among colo- tactics in the spider Meta segmentata.
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