| developing and establishing bee species as crop pollinators: the example of osmia spp. (hymenoptera: megachilidae) and fruit trees. | the development of a bee species as a new crop pollinator starts with the identification of a pollination-limited crop production deficit and the selection of one or more candidate pollinator species. the process continues with a series of studies on the developmental biology, pollinating efficacy, nesting behaviour, preference for different nesting substrates, and population dynamics of the candidate pollinator. parallel studies investigate the biology of parasites, predators and pathogens. the ... | 2002 | 12020357 |
| incidence of wolbachia and cardinium endosymbionts in the osmia community in korea. | sex ratio distorting endosymbionts induce reproductive anomalies in their arthropod hosts. they have recently been paid much attention as firstly texts of evolution of host-symbiont relationships and secondly potential biological control agents to control arthropod pests. among such organisms, wolbachia and cardinium bacteria are well characterized. this study aims at probing such bacteria in the osmia community to evaluate their potential utilization to control arthropod pests. among 17 pcr tes ... | 2009 | 19229488 |
| temperature-dependent emergence of osmia cornifrons (hymenoptera: megachilidae) adults. | japanese hornfaced bees osmia cornifrons (radoszkowski) (hymenoptera: megachilidae) are used for pollination of spring blooming fruit crops such as apple, pear, and blueberry. because o. cornifrons has a short adult life span, synchronization of bee emergence with bloom is critical to maximize crop pollination. this study was conducted to determine lower temperature thresholds (ltds), optimum temperatures, and required degree-day accumulation for emergence of o. cornifrons adults. patterns of te ... | 2009 | 20069827 |
| assessment of potential fumigants to control chaetodactylus krombeini (acari: chaetodactylidae) associated with osmia cornifrons (hymenoptera: megachilidae). | with the recent decline of honey bees, apis mellifera (l.) (hymenoptera: apidae), there is a need for alternative or supplemental crop pollinators, such as osmia cornifrons (radoszkowski) (hymenoptera: megachilidae). however, o. cornifrons propagation could be impeded by a cleptoparasitic mite, chaetodactylus krombeini baker. we investigated the effects of formic acid and wintergreen oil on mortality of c. krombeini hypopi and o. cornifrons adults by determining the lethal concentration of each ... | 2009 | 20069836 |