International audience

The limited pollination efficiency of honeybees (Apidae; Apis) for certain crop plants and, more recently, their global decline fostered commercial development of further bee species to complement crop pollination in agricultural systems. In particular, a number of maso...

International audience; Editorial: Osmia, Journal of Hymenopterology; Éditorial: Osmia, une revue d'hyménoptérologie

International audience

International audience

International audience

We studied the pollinating effectiveness of Osmia cornuta and Apis mellifera on 'Comice' pear. Osmia cornuta visited more flowers per minute (13.8) than A. mellifera (7.1-9.8). Both species visited similar numbers of flowers per tree (6.7-7.9), and switched rows with si...

International audience; An efficient antioxidant system is of particular importance for insects whose high metabolic rates promote increased formation of reactive oxygen species (ROS). The amount of ROS can be additionally increased by environmental factors. This study ...

Première description du mâle d’Osmia (Helicosmia) nasoproducta Ferton, collecté au Portugal (Algarve) au printemps 2014 à Zavial (37,0461°N - 8,8801°O). Description of the male of Osmia (Helicosmia) nasoproducta Ferton 1909 (Apoi...

International audience; Proper orientation of cocoons in linearly structured nests can be crucial for the survival of hatching bees. Nevertheless, misoriented cocoons appear in nature in notable proportions. A detailed analysis of sex, space available for cocoon spinnin...

International audience; Body size is related to fitness in many insects. In solitary bees offspring body size is largely determined by maternal provisions and microclimate. We studied the effect of quantity and quality of provisions and rearing temperatures (20, 25 and ...

International audience; Flowers with poricidally dehiscent anthers are typically nectarless but are avidly visited and often solely pollinated by bees that sonicate the flowers to harvest pollen. Sonication results from shivering the thoracic flight muscles. Honey bees ...

International audience; Since the temperature during development may affect growth and fitness in insects, climate change might affect important life history traits of solitary bees. We investigated the impact of three fluctuating and three constant temperature regimes ...

International audience; AbstractThe cavity-nesting solitary bee Osmia bruneri (Hymenoptera: Megachilidae) normally partitions and plugs its nest tunnel with masticated leaf pulp. In 2018, many females of a captive population were observed collecting pulp from drupelets ...

International audience; A worldwide decline of pollinator abundance is recorded and the worldwide pollination of insect-pollinated crops has traditionally depended on a single species, the honeybee. The risks of relying on a single species are obvious. Other species hav...

Ce travail relate le lâcher de 2 populations du pollinisateur Osmia cornuta dans des vergers d'amandiers en 1989 et 1990. Des nids places dans la nature ont permis de capturer des populations en debut de printemps; puis les larves ont ete laissees a temperature ambiante...

Osmia cornuta adults require exposure to wintering temperatures followed by incubation in the spring to emerge. We studied winter survival, weight loss, emergence time, and post-emergence longevity in O. cornuta exposed to a variety of pre-wintering and wintering treatm...

ABSTRACT Pollinating insects provide a vital ecosystem service to crops and wild plants. Exposure to low doses of neonicotinoid insecticides has sub-lethal effects on social pollinators such as bumblebees and honeybees, disturbing their navigation and interfering with t...

International audience; Recent declines of bee populations have led to great interest in preserving bee species and fuel efforts to develop solitary species for pollination purposes. Xylophilous solitary bees can be easily reared in artificial nests tubes for commercial...

International audience; Effects of pesticides have been debated as one of the causes of worldwide declines of bee populations. Improving the risk assessment of pesticides on bees is important to halt these declines. Pesticide risk assessment today mainly focuses on one ...

On etudie actuellement en Espagne l'utilisation d'Osmia cornuta comme pollinisateur alternatif des vergers. La synchronisation de l'emergence des adultes avec la floraison de la culture cible est essentielle pour utiliser au mieux le potentiel pollinisateur de cette abe...

On a etudie le comportement de nidification d'Osmia cornuta sur des populations introduites dans des vergers d'amandiers. Le temps passe par les femelles a l'interieur et a l'exterieur du nid a ete mesure. Les parois en boue des cellules et les charges de boue transport...

International audience; To investigate whether flower selection in polylectic solitary bees is modulated by chemical imprinting to nest provisions, larvae of Osmia bicornis (L.) were reared on either Brassica napus L. (Brassicaceae) or Onobrychis viciifolia Scop. (Fabac...

International audience; AbstractThe managed, solitary bee, Osmia lignaria Say, is an efficient pollinator of orchard crops. One limitation to their commercial success is high dispersal of populations away from orchards, resulting in low establishment in provided nest ca...

International audience; The foraging patterns of Osmia cornifrons (Radoszkowski) (Megachilidae, Hymenoptera) were determined with an immunomarking method and correlated with fruit set in a commercial tart cherry orchard in Pennsylvania. Adults of O. cornifrons were self...

Nests of the stem- or hole-nesting megachilid bee, Osmia rufa, were analysed to help clar- ify the function of the outermost empty chamber of the nest, the vestibulum. Only nests in an exposed nesting environment had a long vestibulum, whereas nests protected from sun a...

International audience; AbstractOsmia lignaria and O. cornifrons require mineral soil to build partitions between cells in their nests. We examined the textures of soil collected by these bees, using laser particle size analysis. For both species, soil in the nest was g...

On ne connait rien sur la facon dont Ascosphaera torchioi penetre dans les cellules d'Osmia lignaria propinqua ni sur les facteurs qui controlent la frequence du couvain plâtre dans les populations naturelles. Nous apportons des renseignements sur la frequence d'Ascosph...

International audience; The catabolic activity of midgut and the turnover of metabolic reserves in fat body and hemolymph was studied during 7 months of overwintering period (September–March) in the European solitary red mason bee Osmia bicornis L. (Hymenoptera: Megachi...

Numerous species of solitary bees and wasps build linear nests with only one entrance. Developing insects must orient themselves inside their nest to choose the correct direction in which to emerge. Misorientation and chewing towards the dead end of the nest can result ...

International audience; The presence and potential role of adiponectin- and resistin-like peptides in mobilizing free lipids of hemolymph during over-wintering was studied in females of the European solitary red mason bee Osmia bicornis L. (Hymenoptera: Megachilidae). T...

International audience; Winter months are supposed to be a crucial period for the development of the reproductive system, especially ovaries, in Osmia rufa females. During 7 months of the wintering period (from September till March), the length and width of terminal ooc...

Lors d'etudes sur la pollinisation de vergers commerciaux de cerisiers, nous avons observe d'eventuels effets non intentionnels des pulverisations de fongicides sur Osmia lignaria Say. Les pulverisations consistaient en un melange en cuve de fongicides benomyl, captane,...

Afin d'etudier la possibilite d'utiliser l'abeille Osmia cornuta Latreille comme pollinisateur des poiriers'Abate Fetel' et 'Max Red Bartlett', nous nous sommes poses les questions suivantes : (i) O. cornuta utilise-t-elle les fleurs de poiriers comme source preferee de...

Sphex funerarius Gussakovskij new for Belgium (Hymenoptera, Sphecidae)

The cleptoparasitic bee Ammobates (Ammobates) roggeveldi n. sp. is described from a female specimen collected in western South Africa. This is only the second species of the genus recorded from sub-Saharan Africa. Une nouvelle espèce d’abeille d’Afriq...

Bembix rostrata (L.) n'avait pas été retrouvé en Belgique depuis 1990 mais l'auteur signale deux observations récentes : Terril d'Hensies (Hainaut, 2005) et camp militaire de Lagland (Luxembourg belge, 2006).

Report of BWARS Annual General Meeting in Cambridge (England). BWARS, a British non-profit association, and its 2006 Annual Meetings (University of Cambridge) are presented.

Wild bees in natural conditions can develop under various environmental stressors. Heavy metal pollution of the environment is one of the most widely studied stressors in insects, yet its effect is poorly described in bees. We have measured how pollution of the environm...

La difficulté qui existe dans la nature pour déterminer les espèces de Bombus parmi les espèces françaises m’a amené à choisir les reines de Bombus argillaceus, espèce polylectique, remarquable et facile &agr...

Contribution to the knowledge of Colletes halophilus Verhoeff (Hymenoptera, Colletidae) in France and confirmation of its presence in Aquitaine. The presence in Aquitaine of Colletes halophilus Verhoeff is established and its distribution in France and Europe is discuss...

The gasteruptiid fauna of the Maltese archipelago is reviewed for the first time. Four species of Gasteruption are found to inhabit the Maltese Islands, and Gasteruption tanyakronum n. sp. van Achterberg is described on the basis of material collected from Malta and Sar...

We devised a simple method ("flower") to feed bees individually, and compared it with two other methods commonly used ("film canister" and "glass vial"). We tested the three methods on two solitary species, Osmia lignaria and Megachile rotundata, and one social species,...

Megachile sculpturalis est une abeille originaire de l’est de l’Asie observée pour la première fois en Europe en 2008 à Allauch près de Marseille (France). Elle a également été détectée aux &Eacu...

Solitary bees provide essential pollination services for many arable crops, but are prone to global decline. Agricultural intensification, which is connected with pesticide usage, is among major threats to bees and, thus, to the food security and ecosystem stability. As...

Malgré les perturbations dues à l’urbanisation grandissante, les villes abritent une biodiversité non négligeable. Comme beaucoup d’autres taxons, les abeilles sauvages peuvent être relativement abondantes dans les zones urb...

The new classification of bees (Hymenoptera, Apoidea, Apiformes) or the fall of the honey bee (Apis mellifera L.) from its pedestal. In this article, the author provides a historical review of classification and phylogeny of bees. Recent work suggests the paraphyly of M...

1. Bees are one of the most important groups of pollinators in the temperate zone. Although heavy metal pollution is recognised to be a problem affecting large parts of the European Union, we currently lack insights into the effects of heavy metals on wild bee survival ...

Abstract Agricultural landscapes have changed substantially in recent decades, shifting from the dominance of small fields (S) with diverse cropping systems toward large-scale monoculture (L), where landscape heterogeneity disappears. In this study, artificial nests of ...

The effects of pollinator density on the seed set of a male-sterile (MS) and a male-fertile (MF) line of winter oilseed rape (Brassica napus) were studied in 24 isolation cages (7.5 m2). Pollinator treatments comprised of high pollinator density (a small honeybee colony...