On the specific attraction of the males of the six-toothed spruce bark beetle,Pityogenes chalcographus (L.) to a mixture of synthetic pheromones of the eight-toothed spruce bark beetle,Ips typographus (L.) (Coleoptera,Scolytidae)

Summary Traps containing a mixture of attractants forIps typographus also caught other species of bark beetles. The numbers ofPityogenes chalcographus, Pityogenes conjunctus, andTrypodendron lineatum were too high to be interpreted as accidental captures. The males of the polygamousP. chalcographus were specifically attracted, indicating that theI. typographus pheromone or one of its components acts as a kairomone and primary attractant for the pioneering males ofP. chalcographus.     

安徽水生维管植物的多样性

通过实地调查并参考相关文献,对安徽水生维管植物的多样性进行了研究。结果表明:安徽共有水生维管植物142种、3亚种、6变种,隶属于76属,41科;具有4种生活型,组成了18个主要的植物群丛,其中挺水植物所占比例最高(56.7%),漂浮植物比例最低(7.3%)。分析安徽水生维管植物受威胁的原因,主要是湿地生境的破坏与恶化及外来种入侵等,因此,在加快湿地保护与建设的同时,应保护和利用湿地及水生植物的多样性。     

天牛成虫行为研究的现状与展望

对天牛成虫行为研究的现状进行总结，分析了天牛成虫行为的机制和形态学基础，同时对利用成虫行为防治天牛的研究工作提出了建议。     

福建龙湖水生植被

福建龙湖水生植被程静，张娆挺，曾文彬（生物学系）龙湖位于福建省晋江市龙湖镇，水域面积１６６．７ｈｍ２（正常水位时的水域面积），是福建省最大的天然淡水湖，也是福建省淡水鱼养殖的最佳场所之一，龙湖基本处于未开发状态．本文研究了龙湖水生植被种类和分布、水生...     

光照对水生动物的影响

本文简述了光照强度、光周期、光谱成分等对水生动物的摄食、生长、繁殖等方面的影响,对从事这方面的研究做了一些基础资料的积累。     

Cardenolide biosynthesis in chrysomelid beetles

Summary Labeling experiments have shown that the chrysomelid beetleChrysolina coerulans is able to biosynthesize its own defensive cardenolides from cholesterol, via a pathway involving a C₂₁ intermediate, as in plants.