中华蜜蜂对不同距离和高度的饲喂点的反应

在八叶五加流蜜期和外界缺蜜期，观察中蜂工蜂对不同距离设置的人工饲喂点的采集反应．结果表明，５０只标记蜂对不同距离给饲点的信息传递的有效率和准确率有显著的差异（Ｐ＜０．０１），外界有蜜源会降低标记蜂信息传递的有效性．另一观察表明，中蜂工蜂的信息传递能在一定范围表达食物源的相对高度．     

Conotoxins: Therapeutic Potential and Application

The pharmacological variety of conotoxins, diverse peptides found in the venoms of marine cone snails, is well recognized. Venoms from each of the estimated 500 species of cone snails contain 50 to 200 distinct biologically active peptides. Most conotoxins characterized to date target receptors and ion channels of excitable tissues, such as ligand-gated nicotinic acetylcholine, N-methyl-D-aspartate, and type 3 serotonin receptors, as well as voltage-gated calcium, sodium, and potassium channels, and G-protein-coupled receptors including α-adrenergic, neurotensin, and vasopressin receptors, and the norepinephrine transporter. Several conotoxins have shown promise in preclinical models of pain, convulsive disorders, stroke, neuromuscular block, and cardioprotection. The pharmacological selectivity of the conotoxins, coupled with the safety and efficacy demonstrated in preclinical models, has led to their investigation as human therapeutic agents. In the following review, we will survey the pharmacology and therapeutic rationale of those conotoxins with potential clinical application, and discuss the unique challenges that each will face in the course of their transition from venom component to human therapeutic.     

不同蜂种授粉对‘金茶1号’茶叶籽传粉效率与果实品质的影响

蜜蜂授粉对农业生产具有非常重要的价值,为了研究不同蜂种授粉对茶叶品质的影响,本研究以茶树‘金茶1号’为研究对象,分别使用意大利蜜蜂(Apis mellifera Ligustica)、中华蜜蜂(Apis cerana cerana)与地熊蜂(Bombus terrestris)开展蜂媒授粉技术及增产提质影响研究。结果表明中蜂授粉组访花频率最高,意蜂授粉组柱头花粉数最高,地熊蜂授粉组单花访问时间最长。中蜂授粉能显著提升茶树的茶叶籽座果率与茶叶籽油茶多酚含量,但对茶叶籽的含油量影响不显著。意蜂授粉与地熊蜂授粉对座果率影响不显,但能显著提升茶叶籽的茶多酚含量与含油量,3个授粉组对茶叶籽油的主要成分并无显著影响。在实际中可以根据生产需要选择对应的蜂种进行授粉。     

蜜蜂及其产品作为环境污染生物指示器的研究进展

蜜蜂及其产品是可靠、灵敏、经济的环境污染生物指示器。综述了蜜蜂及其产品在监测重金属、杀虫剂、有机污染物和放射性同位素等环境污     

苜蓿切叶蜂(Megachile rotundata F.)研究进展

苜蓿切叶蜂(Megachile rotundata F.)是苜蓿制种业的重要传粉昆虫,在大豆杂交授粉中也起着重要作用。本文系统地阐述了苜蓿切叶蜂国内外的研究进展,分析了苜蓿切叶蜂化性、滞育及两者间的关系,并介绍了繁殖过程中的有害天敌。     

Antineurotoxic activity of Galactia glaucescens against Crotalus durissus terrificus venom

Ethanolic extract of leaves of Galactia glauscescens (GGE) at concentration of 100 and 500 mug/ml prevented the neuromuscular paralysis induced by Crotalus durissus terrificus venom on mouse phrenic nerve-diaphragm preparation.     

蜂子比值与采蜜量相关性的研究

“浙农大1号”意蜂66群 ,通过刺槐花期和荆条花期的5次重复试验 ,研究蜂子比值与单位蜜蜂采蜜量的关系。5次重复试验结果均表明两者之间存在显著的正相关 ,其相关系数分别为0.6207 (n=16)、0.6887 (n=11)、0.5074 (n=27)、0.7628 (n=17)、0.5920 (n=17) ,且这5个相关系数之间不存在显著差异 ,表明这些试验蜂群来自相同相关程度的总体。把5次重复试验的数据进行综合 ,得到蜂子比值与单位蜜蜂采蜜量之间的相关系数r=0.3737 (n=88) ,回归方程为y=1.4262 3.2805x (0.3相似文献