The influence of habitat properties on sex determination in cavity-nesting Hymenoptera

Wittmann, Katharina; Klein, Alexandra‐Maria; Staab, Michael

doi:10.1016/j.baae.2023.04.001

Basic and Applied Ecology

2023

DOI: 10.1016/j.baae.2023.04.001

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The influence of habitat properties on sex determination in cavity-nesting Hymenoptera

Katharina Wittmann

Alexandra‐Maria Klein

Michael Staab

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Cited by 2 publications

References 60 publications

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Local and landscape effects on the reproduction of wild bees and wasps in Mediterranean communities along a gradient of land‐use

Marrero,

Gómez‐Martínez,

Allasino

et al. 2025

Ecological Entomology

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The transformation of natural landscapes for agricultural purposes may severely affect wild bee and wasp reproduction. In this study, we located trap‐nests on 18 natural Mediterranean communities within agricultural areas to study the effects of landscape (% natural areas and heterogeneity) and local flowering communities (flower abundance and richness) on the total abundance and richness of solitary bees and wasps that nest within cavities. We also estimated several reproductive variables (number of nests, number of cells per nest, sex ratio, parasitoidism and survival) of the two most common species in the study system: the bee Osmia caerulescens and the wasp Ancistrocerus longispinosus. We found that total bee abundance increased with flower richness and landscape heterogeneity, while it decreased with flower abundance. Furthermore, our results indicated local and landscape effects on the focal species reproductive success, being overall stronger those at the local than at the landscape scale. Floral richness and abundance influenced the number of cells per nest. However, while the effect of flower abundance was positive in both cases, the effect of flower richness differed, being positive for O. caerulescens and negative for A. longispinosus. The percentage of natural habitats in the landscape had a positive additional effect on the number of cells per nest only in A. longispinosus. Besides, flower richness was positively related to the proportion of females in both species and increased O. caerulescens survival. Our findings stress the importance of considering different spatial scales for an effective conservation management that takes into account Hymenoptera reproduction.

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Local and landscape effects on the reproduction of wild bees and wasps in Mediterranean communities along a gradient of land‐use

Marrero,

Gómez‐Martínez,

Allasino

et al. 2025

Ecological Entomology

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Attractant spray enhances nesting preference and reduces macroparasite infestation of Osmia cornuta

Eeraerts

2024

J Applied Entomology

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Mason bees (Osmia. spp) can provide an alternative for crop pollination management in addition to the Western honeybees (Apis mellifera). Targeted evidence‐based guidelines can improve cost‐effective management of mason bees. Here, I test the effect of an attractant spray developed in the United States for improving the nesting preference for artificial trap nests of mason bees in Belgium. More specifically, this study investigates the effect of the attractant spray on the nesting preference and nesting performance of the European orchard bee (Osmia cornuta), as well as its effect on the infestation of nest‐associated macroparasites. The number of sealed nesting cavities was twice as high in the trap nests that were treated with the attractant spray. Nesting performance expressed as number of brood cells per cavity, successful cocoon formation, adult emergence, proportion of female bees in the offspring and the number of dead larvae was not different between the treated and the untreated nests. Overall infestation of macroparasites, and infestation of drosophilid flies in particular, were both twice as high in untreated nests. This study provides evidence that the attractant spray improves nesting preference and reduces macroparasite infestation in O. cornuta. The use of this attractant can provide growers and stakeholders with an effective management strategy to prevent infestation by macroparasites and promote efficient bee breeding.

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The influence of habitat properties on sex determination in cavity-nesting Hymenoptera

Cited by 2 publications

References 60 publications

Local and landscape effects on the reproduction of wild bees and wasps in Mediterranean communities along a gradient of land‐use

Local and landscape effects on the reproduction of wild bees and wasps in Mediterranean communities along a gradient of land‐use

Attractant spray enhances nesting preference and reduces macroparasite infestation of Osmia cornuta

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