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Mostrando ítems 11-20 de 374
Pesticides and reduced‐risk insecticides, native bees and pantropical stingless bees: pitfalls and perspectives
(Pest Management Science, 2018)
The leucografa species group of Megachile (Chrysosarus) (Hymenoptera: Megachilidae)
(Taylor & Francis Ltd, 2021-07)
The study contributes to the knowledge of the morphological diversity within the Chrysosarus lineage, one of the largest subgenera of Megachile in the Neotropics. The species of the leucografa group share characteristics ...
Wild bumble bees (Hymenoptera: Apidae: Bombini) as a potential reservoir for bee pathogens in northeastern Argentina
(Taylor & Francis, 2019-08)
The genus Bombus is represented by 38 subgenera around the world with nearly 250 described species. They areamong the most efficient insect pollinators and therefore important to the ecology and the economy. In Argentina, ...
Weakness and collapse of bee colonies in Brazil: are there cases of CCD?
(Empresa Brasil Pesq Agropec, 2016-05-01)
In the last decades, the decline of wild bee populations and the collapse of Apis mellifera colonies have concerned researchers and beekeepers. The objective of this review was to compile some of the most relevant studies ...
Pollen host selection by a broadly polylectic halictid bee in relation to resource availability
(Springer, 2015-06)
The relationship between utilized and available resources in the same environment has not yet been studied in most wild bees. In a riparian forest, a total of 15 pollen types from 10 plant families were identified from ...
Antennal sensilla analyses as useful tools in the revision of the sweat-bee subgenus Corynura (Callistochlora) Michener (Hymenoptera: Halictidae)
(Elsevier Gmbh, 2016-05)
Although many studies have analyzed the physiology of the antennal sensilla, only a few have used them for systematics. If the abundance and distribution of the different types of sensilla are constant within species, these ...
Influence of landscape composition on wild bee communities: Effects of functional landscape heterogeneity
(Elsevier, 2022-12)
Landscapes dominated by conventional agriculture reduce and simplify natural habitats, with negative consequences for ecosystem regulating services. We examined differences in structure and composition of bee communities ...