Results 81 to 90 of about 37,082 (277)

Urban landscapes tend to increase the presence of pathogenic protozoa, microsporidia and viruses, but likely decrease the abundance of viruses in wild bees and wasps

Insect Science, EarlyView.
• The bees Anthophora plumipes and Osmia cornuta had a higher occurrence probability of the neogregarine protozoan Apicystis bombi in more fragmented urban areas.• In the bee Halictus scabiosae and wasp Polistes dominula, hotter urban areas increased the likelihood of occurrence of viruses.• The viruses were found to be replicative in the samples, and ...
Andrea Ferrari, Giovanni Cilia, Carlo Polidori   +2 more
wiley   +1 more source

On the identity of Melipona torrida Friese (Hymenoptera, Apidae) [PDF]

Revista Brasileira de Entomologia, 2013
On the identity of Melipona torrida Friese (Hymenoptera, Apidae). Melipona marginata var. torrida Friese, 1916, described from three workers putatively collected in Costa Rica, never had its identity properly recognized. Since its original description, no additional specimens have ever been collected in Costa Rica.
openaire   +5 more sources

Pattern of population structuring between Belgian and Estonian bumblebees [PDF]

, 2019
Several population genetic studies investigated the extent of gene flow and population connectivity in bumblebees. In general, no restriction in gene flow is considered for mainland populations of common bumblebee species.
Karise, Reet, Maebe, Kevin, Mand, Marika, Meeus, Ivan, Smagghe, Guy   +4 more
core   +1 more source

Ecological factors underlying the spatiotemporal dynamics in a key forest beetle pollinator Facteurs écologiques à la base de la dynamique spatio‐temporelle d'un important coléoptère forestier pollinisateur

Agricultural and Forest Entomology, EarlyView.
Eusphalerum, an understudied beetle pollinator in North America, comprises over 50% of beetle specimens collected using flight‐intercept traps in forests across New Brunswick, Canada. In a study investigating its phenology, congeneric aggregation and population dynamics, we demonstrated that Eusphalerum exhibits unique phenology distinct from other ...
Mélodi Lagacé, Denis R. Boudreau, Louka Tousignant, Gaétan Moreau   +3 more
wiley   +1 more source

Apidae

, 2015
Published as part of Zuparko, Robert L., 2015, Annotated Checklist of California Encyrtidae (Hymenoptera), pp.
openaire   +2 more sources

Cytogenetic characterization of Partamona cupira (Hymenoptera, Apidae) by fluorochromes [PDF]

Genetics and Molecular Biology, 2010
Four colonies of the stingless bee Partamona cupira (Hymenoptera: Apidae) were cytogenetically analyzed using conventional staining and the fluorochromes CMA(3) e DAPI. The females have 2n = 34 chromosomes (2K = 32 M¯+2 A¯). Some females, however, presented an additional large B acrocentric chromosome, to a total of 2n = 35.
Marthe, Jefferson de Brito, Pompolo, Silvia das Graças, Campos, Lucio Antônio de Oliveira, Salomão, Tânia Maria Fernandes, Tavares, Mara Garcia   +4 more
openaire   +6 more sources

Hybridization between wild and cultivated potato species in the Peruvian Andes and biosafety implications for deployment of GM potatoes [PDF]

, 1976
The nature and extent of past and current hybridization between cultivated potato and wild relatives in nature is of interest to crop evolutionists, taxonomists, breeders and recently to molecular biologists because of the possibilities of inverse gene ...
Maria Scurrah, Carolina Celis-Gamboa, Susana Chumbiauca, Alberto Salas, Richard G. F. Visser, R Bernatzky, SB Brush, SL Buchmann, BC Celis, SA Cultivarston, Q Chen, MK Ehlenfeldt, Z Huaman, SA Jackson, T Johns, CM Ochoa, R Ortiz, SJ Peloquin, CF Quiros, MS Ramanna, JC Sanford, DM Spooner, D Ugent, D Ugent, P Vos, KS Zimmerer   +25 more
core   +4 more sources

L'activité de butinage des Apoides sauvages (Hymenoptera Apoidea) sur les fleurs de maïs à Yaounde (Cameroon) et réflexions sur la pollinisation des graminées tropicales [PDF]

Biotechnologie, Agronomie, Société et Environnement, 2002
The gatering activity of wild bees (Hymenoptera Apoidea) on flowers of maize at Yaound (Cameroon) and further considerations on pollination of the tropical Gramineae.
Tchuenguem-Fohouo F.N., Messi J., Pauly A.   +2 more
doaj  

Conservation Value and Permeability of Neotropical Oil Palm Landscapes for Orchid Bees [PDF]

, 2013
The proliferation of oil palm plantations has led to dramatic changes in tropical landscapes across the globe. However, relatively little is known about the effects of oil palm expansion on biodiversity, especially in key ecosystem-service providing ...
Gilbert, Lawrence, Livingston, George, Shalene, Jha, Vega, Andres   +3 more
core   +1 more source

Floral strips increase the abundance and spillover of beneficial insects in rotational crop fields

Agricultural and Forest Entomology, EarlyView.
Abstract Insects provide many ecological functions that support agricultural production, but beneficial insect populations are often lower in areas of intensive agriculture. Agronomic practices that support beneficial insect populations are important for sustainable crop production.
Michael F. Killewald, Alejandro C. Costamagna, Yvonne Lawley, Rob H. Gulden, Jason Gibbs   +4 more
wiley   +1 more source