Results 101 to 110 of about 31,067 (227)

First report of Monoeca in Argentina, with description of two new species (Hymenoptera: Apidae) [PDF]

open access: yes, 2016
Two new species of the oil-collecting bee genus Monoeca Lepeletier & Audinet-Serville (Apidae: Tapinotaspidini) are described and figured from females and males captured in north - eastern Argentina.
Roig Alsina, Arturo Hernan   +1 more
core   +2 more sources

Forager bees (Apis mellifera) highly express immune and detoxification genes in tissues associated with nectar processing. [PDF]

open access: yes, 2015
Pollinators, including honey bees, routinely encounter potentially harmful microorganisms and phytochemicals during foraging. However, the mechanisms by which honey bees manage these potential threats are poorly understood.
Johnson, Brian R   +2 more
core   +1 more source

Daño colateral en abejas por la exposición a pesticidas de uso agrícola

open access: yesEntramado, 2018
El uso de pesticidas es una práctica común en la industria agrícola para erradicar plagas. El objetivo de esta revisión fue documentar el efec to de los pesticidas en la relación ecológica de las abejas con el medio ambiente y los sistemas de producción ...
Nazly Yolieth Martin-Culma   +1 more
doaj   +1 more source

Visitantes florais de Aechmea constantinii (Mez) L. B. Sm.(Bromeliaceae) em um remanescente da Mata Atlântica do Nordeste Oriental

open access: yesBiotemas, 2010
Este trabalho teve como objetivo principal a determinação dos visitantes florais e potenciais polinizadores de Aechmea constantinii (Mez) L. B. Sm., uma bromélia endêmica da Mata Atlântica do Nordeste Oriental do Brasil.
Petrúcio Alexandre Fonseca Rios   +2 more
doaj   +1 more source

A failed invasion? Commercially introduced pollinators in Southern France [PDF]

open access: yes, 2009
The natural diversity of Bombus terrestris subspecies could be under threat from the commercialisation of bumblebees. Therefore, to determine whether commercially imported bumblebees are able to establish and spread, we carried out
Chittka, L   +3 more
core   +3 more sources

Suction feeding in orchid bees (Apidae: Euglossini) [PDF]

open access: yesProceedings of the Royal Society of London. Series B: Biological Sciences, 2004
Energy flux during nectar feeding is maximized at an intermediate sugar concentration, the value of which depends on the morphology of the feeding apparatus and the modality of fluid feeding. Biomechanical models predict that a shift from capillary-based lapping to suction feeding will lead to a decrease in this optimal sugar concentration.
openaire   +3 more sources

Spatial Relation of Bumblebees (Hymenoptera-Apidae) with Host-Plant and their Conservation Issues: An Outlook from Urban Ecosystem of Kathmandu Valley, Nepal [PDF]

open access: yes, 2019
Ecology and conservation status of bumblebee species remains poorly understood, especially in rapidly degrading urban ecosystems, which is important considering the role of bumblebees in the pollinations. We collected more than 200 bumblebee (Bombus
Baniya, Pratikshya   +4 more
core   +2 more sources

The Bees of A.L. Mangham Jr. Regional Airport, Nacogdoches, Texas [PDF]

open access: yes, 2017
The United States is home to about 4,000 species of native bees, and many are critically important due to the pollination services they provide (Buchman & Nabhan 1996). Most of these are inconspicuous, solitary bees that nest in the ground.
Bennett, Daniel J., Pingedot, Ryan J.
core   +1 more source

New Records of Bee Genera (Hymenoptera: Apoidea) from Colombia

open access: yesActa Biológica Colombiana, 2006
The solitary bee genera Lophothygater Moure y Michener (Apidae, Eucerini) and Tapinotaspoides Moure (Apidae, Tapinotaspidini) are reported from northern Colombia for the first time.
Víctor H. González, Mónica Ospina
doaj  

Pollinators In Peril: A Systematic Status Review of North American and Hawaiian Native Bees [PDF]

open access: yes, 2017
While the decline of European honeybees in the United States and beyond has been well publicized in recent years, the more than 4,000 species of native bees in North America and Hawaii have been much less documented. Although these native bees are not as
Kelsey Kopec, Lori Ann Burd
core  

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