蜜蜂工蜂纳氏信息素研究进展

蜜蜂是一种社会性昆虫,蜂群内有蜂王、工蜂和雄蜂。蜂群中个体间资源共享、精确分工和相互交流的高度结构化的群体生活,是通过蜂群中个体间广泛的信息联系实现的。蜂群内蜜蜂除依靠接触、声音、舞蹈动作进行通讯联络外,很多信息是通过信息素来传递的。     

The effects of insect pollination on canola (Brassica napus L. cv. O.A.C. Triton) seed germination

Summary The presence of pollinators, e.g. honey bees, on canola (cv. O.A.C Triton) increases the germinability of resulting seeds from 83% to 96%.     

花卉害虫——拟蔷薇切叶蜂的研究

拟蔷薇切叶蜂 Megachile subtranquilla Yasumatsu 在北京地区一年发生一代,以茧内老熟幼虫在旱井、菜窖等的砖缝及土洞内越冬。翌年6月底至8月中旬成虫羽化。切叶蜂是独居蜂,但又具群集习性。本文叙述了该虫的形态特征、生活史、为害情况、天敌以及防治方法等。     

Impacts of coffee agroforestry management on tropical bee communities

Though it is undoubted that tropical bees are influenced by habitat composition, few studies have investigated the relative importance of both local and landscape-level habitat parameters in supporting large and diverse bee communities. The conservation of native bee communities within agroforestry landscapes is particularly urgent given the importance of pollination services within these systems. In this study, we examined tropical bee communities within a largely deforested shade coffee-growing region in Chiapas, Mexico. We used regression tree modeling to examine the response of bee functional groups to local and landscape-level habitat management. Our models revealed that the most predictive factors for bee abundance and species richness were the number of tree species, the number of tree species in flower, and the canopy cover of the local agroforestry landscape. Solitary bees were most abundant in habitats with high canopy cover, while social bees were most abundant in habitats with greater tree species richness. Cavity-nesting and wood-nesting bee abundance was positively affected by the amount of canopy cover in the farm, while ground-nesting bees were most abundant in habitats with a large number of tree species in flower. Our results demonstrate that across bee sociality groups, nesting guilds, and tribes, the most critical factor impacting native bee communities was within-farm local vegetation management. These results reveal the important role that agroforestry managers can have on biodiversity conservation, and the potential contribution they can make by creating resource-rich agricultural matrices. Specifically, our findings highlight the importance of diverse overstory tree management in supporting native bee communities within tropical agroforestry systems.     

野外收蜂的技巧与方法

无论是对蜜蜂研究爱好者还是养蜂人,收取野外蜜蜂都具有一定的研究价值和经济价值。野外收蜂需掌握一定的收蜂技巧与方法才能事半功倍。野外收蜂的技巧不仅体现在将蜜蜂安全、高效地收入自己“囊中”,还需掌握根据野生蜂的飞行方式和归巢路线找到其蜂巢以及如何准确辨别归巢蜜蜂是野生蜂还是家养蜂。在此基础上,对找到的蜂巢和蜜蜂进行收取才会有显著成效。