نتایج جستجو برای: cleptoparasitic bee

تعداد نتایج: 13613  

Journal: :archives of razi institute 2016
a. hedayat a. zare m. ahmadi a. zare

honey bee sting is used in some societies as a treatment of inflammation in joint diseases such as arthritis. to investigate the effect of honey bee venom in reducing inflammation, we selected 30 male wister rats which were divided in to 6 groups. except group 1, all remaining groups received 0.5 ml of complete freund’s adjuvant to induce arthritis. after 9 days, all animals that received adjuv...

2015
Olivia M. Bernauer Hannah R. Gaines-Day Shawn A. Steffan Brian T. Forschler

Bees provide vital pollination services to the majority of flowering plants in both natural and agricultural systems. Unfortunately, both native and managed bee populations are experiencing declines, threatening the persistence of these plants and crops. Agricultural chemicals are one possible culprit contributing to bee declines. Even fungicides, generally considered safe for bees, have been s...

Journal: :Bulletin of entomological research 2017
M Plascencia S M Philpott

In urban landscapes, gardens provide refuges for bee diversity, but conservation potential may depend on local and landscape features. Foraging and population persistence of bee species, as well as overall pollinator community structure, may be supported by the abundance, richness, and spatial distribution of floral resources. Floral resources strongly differ in urban gardens. Using hand nettin...

2016
Gihyun Lee Hyunsu Bae

Bee venom therapy has been used to treat immune-related diseases such as arthritis for a long time. Recently, it has revealed that group III secretory phospholipase A2 from bee venom (bee venom group III sPLA2) has in vitro and in vivo immunomodulatory effects. A growing number of reports have demonstrated the therapeutic effects of bee venom group III sPLA2. Notably, new experimental data have...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Ralph Grundel Robert P Jean Krystalynn J Frohnapple Gary A Glowacki Peter E Scott Noel B Pavlovic

Given bees' central effect on vegetation communities, it is important to understand how and why bee distributions vary across ecological gradients. We examined how plant community composition, plant diversity, nesting suitability, canopy cover, land use, and fire history affected bee distribution across an open-forest gradient in northwest Indiana, USA, a gradient similar to the historic Midwes...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Jeroen Scheper Menno Reemer Ruud van Kats Wim A Ozinga Giel T J van der Linden Joop H J Schaminée Henk Siepel David Kleijn

Evidence for declining populations of both wild and managed bees has raised concern about a potential global pollination crisis. Strategies to mitigate bee loss generally aim to enhance floral resources. However, we do not really know whether loss of preferred floral resources is the key driver of bee decline because accurate assessment of host plant preferences is difficult, particularly for s...

Journal: :Annals of the New York Academy of Sciences 2010
Rachael Winfree

Bees pollinate most of the world's wild plant species and provide economically valuable pollination services to crops; yet knowledge of bee conservation biology lags far behind other taxa such as vertebrates and plants. There are few long-term data on bee populations, which makes their conservation status difficult to assess. The best-studied groups are the genus Bombus (the bumble bees), and b...

2009
Hiroshi Izuta Masamitsu Shimazawa Kazuhiro Tsuruma Yoko Araki Satoshi Mishima Hideaki Hara

BACKGROUND Vascular endothelial growth factor (VEGF) is a key regulator of pathogenic angiogenesis in diseases such as cancer and diabetic retinopathy. Bee products [royal jelly (RJ), bee pollen, and Chinese red propolis] from the honeybee, Apis mellifera, have been used as traditional health foods for centuries. The aim of this study was to investigate the anti-angiogenic effects of bee produc...

2014
Rodrigo Cuesta Broderick Crawford Ricardo Soto Fernando Paredes

In this paper, we present a new Artificial Bee Colony algorithm to solve the non-unicost Set Covering Problem. The Artificial Bee Colony algorithm is a recent metaheuristic technique based on the intelligent foraging behavior of honey bee swarm. Computational results show that Artificial Bee Colony algorithm is competitive in terms of solution quality with other metaheuristic approaches for the...

2016
Yuko Asai Hisashi Uhara Atsushi Miyazaki Minoru Saiki Ryuhei Okuyama

Here we report the cases of five patients with a late onset of acute urticaria after a bee sting. The ages of the five Japanese patients ranged from 33 to 86 years (median: 61). All patients had no history of an allergic reaction to bee stings. The onset of urticaria was 6-14 days (median: 10) after a bee sting. Although four of the patients did not describe experiencing a bee sting at their pr...

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