Conservation Evidence strives to be as useful to conservationists as possible. Please take our survey to help the team improve our resource.

Providing evidence to improve practice

Individual study: Parasitism in wild and managed populations of the orchard bee Osmia cornuta using nest boxes in Catalonia, northeast Spain

Published source details

Bosch J. (1992) Parasitism in wild and managed populations of the almond pollinator Osmia cornuta Latr. (Hymenoptera: Megachilidae). Journal of Apicultural Research, 31, 77-82

This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Provide artificial nest sites for solitary bees Bee Conservation

From 1988-1991, Bosch (1992) recorded rates of parasitism for the orchard bee Osmia cornuta, nesting in nest boxes comprising paper straws in milk cartons, drilled holes in wooden blocks, grooved wooden boards, or bundles of reed stem. Overall parasitism rates ranged from 5-18% of cells in wild populations, and 0.1-13% of cells in managed populations.