Results 31 to 40 of about 2,091 (171)

Pollinator diversity (Hymenoptera and Diptera) in semi-natural habitats in Serbia during summer [PDF]

open access: yes, 2012
The aim of this study was to assess species diversity and population abundance of the two main orders of pollinating insects, Hymenoptera and Diptera. The survey was conducted in 16 grassland fragments within agro-ecosystems in Vojvodina, as well as in ...
Andric, Andrijana   +3 more
core   +1 more source

Population Traits and a Female Perspective for Aglae and Exaerete, Tropical Bee Parasites (Hymenoptera, Apinae: Euglossini)

open access: yesPsyche: A Journal of Entomology, Volume 2019, Issue 1, 2019., 2019
Size variation of both males and females leads to taxonomic confusion regarding wholly parasitic euglossines. The six most widespread species, Exaerete frontalis, E. smaragdina, E. dentata, E. trochanterica, E. lepeletieri, and Aglae caerulea, ranged from 12.5 to 28 mm in length (n = 522; 50 females; 472 males), and within species, some were 40‐80 ...
David W. Roubik, G. Wilson Fernandes
wiley   +1 more source

Presence of Euglossa (Euglossa) amazonica outside of the Amazon Basin – biogeographic insights [PDF]

open access: yes, 2013
Distributional patterns of euglossine bees are often shadowed by the most noticeablefeatures of the group, their morphology and behavior. With the constant discovery of records ofeuglossine species in novel localities, and the ongoing systematic work in ...
Hinojosa-Diaz, Ismael A.
core   +3 more sources

Richness of Wild Bees (Hymenoptera: Apidae) in a Forest Remnant in a Transition Region of Eastern Amazonia

open access: yesPsyche: A Journal of Entomology, Volume 2019, Issue 1, 2019., 2019
Eastern Amazonia is an area with great biological diversity that has suffered rapid deforestation and forest fragmentation over the years. Because of the scarcity of data on the fauna and flora, the northwest of the state of Maranhão has become a priority area for studies that seek to gain a better understanding of bee fauna.
Luciano André Chaves Ferreira   +4 more
wiley   +1 more source

Specific immunotherapy in Albanian patients with anaphylaxis to hymenoptera venoms [PDF]

open access: yes, 2002
Background: Severe allergic reactions during rush-specific immunotherapy (Rush-SIT) may occur in the treatment of hymenoptera sting allergy. The objective of the present study was to examine the characteristics of allergic reactions during Rush-SIT in a ...
Dinh, Q. Thai   +6 more
core  

Morphology of the male reproductive system and spermiogenesis in Hypanthidium foveolatum (Alfken, 1930) (Hymenoptera : Apidae : Megachilinae) [PDF]

open access: yes, 2009
The morphological aspects of male reproductive tract, spermiogenesis and spermatozoa are typical for each species and reflect its evolution, establishing a unique source of characters, which has been used to help solve phylogenetic problems.
Báo, Sônia Nair   +3 more
core   +1 more source

Ultrastructural and Cytochemical Aspects of Metamorphosis in the Midgut of Apis mellifera L. (Hymenoptera: Apidae: Apinae) [PDF]

open access: yesZoological Science, 2003
The midgut of Apis mellifera is remodeled during metamorphosis. The epithelium and, to a lesser extent, the muscular sheath degenerate between the end of the last larval instar and the onset of pupation (prepupa). The larval epithelium is shed to the midgut lumen and digested, while a new epithelium is reconstructed from larval regenerative cells ...
Da Cruz-Landim, Carminda   +1 more
openaire   +3 more sources

The evolution of floral sonication, a pollen foraging behavior used by bees (Anthophila)

open access: yesEvolution, Volume 72, Issue 3, Page 590-600, March 2018., 2018
Abstract Over 22,000 species of biotically pollinated flowering plants, including some major agricultural crops, depend primarily on bees capable of floral sonication for pollination services. The ability to sonicate (“buzz”) flowers is widespread in bees but not ubiquitous.
Sophie Cardinal   +2 more
wiley   +1 more source

Diversity of Wild Bees along Elevational Gradient in an Agricultural Area in Central Java, Indonesia

open access: yesPsyche: A Journal of Entomology, Volume 2017, Issue 1, 2017., 2017
Increases in mean temperature affect the diversity and abundance of wild bees in agricultural ecosystems. Pollinator community composition is expected to change along an elevational gradient due to differences in the daily ambient temperature. This study investigated the diversity and abundance of wild bees in an agricultural area along an elevational ...
Imam Widhiono   +3 more
wiley   +1 more source

Host‐Cleptoparasite Biogeographical Congruence Through Time: The Case of Cuckoo Oil Bees

open access: yesJournal of Biogeography, Volume 52, Issue 5, May 2025.
ABSTRACT Aim Insect brood parasites (i.e., cleptoparasites), like cuckoo bees, typically attack hosts within specific lineages, but seem to be less constrained by the biogeographical movements of their hosts compared to obligate parasites. Cuckoo bees depend on stable host populations, being particularly sensitive to environmental changes and thus ...
Aline C. Martins   +6 more
wiley   +1 more source

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