Geographical distributions and host associations of larval parasitoids of frugivorous Drosophilidae in Japan

In Japan, dominant parasitoids attacking frugivorous Drosophilidae species were Asobara (Braconidae, Alysiinae), Leptopilina, and Ganaspis species (Figitidae, Eucoilinae). Asobara japonica was found throughout Japan, and its populations in the main islands of Japan were parthenogenetic whereas those in the subtropical islands were sexually reproducing. Other parasitoids showed rather restricted distributions; A.tabida, A. rossica, A. rufescens, and Leptopilina heterotoma occurred mainly in northern to central parts of the main islands, Ganaspis xanthopoda from central to southern parts of the main islands, A. leveri in a southern part of the main islands, and A. pleuralis, L. victoriae, and Ganaspis sp. mainly in the subtropical islands. Their major hosts were species of the D. melanogaster species group in the main islands, and species of the D. melanogaster, immigrans, and polychaeta species groups in the subtropical islands. Host use considerably varied among parasitoid species, especially in the subtropical islands.     

基于ZigBee的无线温湿度采集系统设计

基于ZigBee技术设计了一套无线温湿度采集系统.将该系统部署到环境中，节点自发组网通信，终端采集节点可将环境的温湿度数据发送给协调器汇聚，再通过串口发送给上位机实时显示；协调器搭配联网模块可以连接云平台，客户端小程序订阅相关主题后也可以接收到协调器上报的数据，并查看到数据的变化趋势.该系统不仅能应用于家庭环境监测，还可以应用于工农业生产中.     

The natural history of the parasitic wasp Trogus pennator (Hymenoptera: Ichneumonidae): Host‐finding behaviour and a possible host countermeasure

The parasitic wasp Trogus pennator (Ichneumonidae) attacks the larvae of swallowtail butterflies (Papilionidae). Female T. pennator were followed in the field as they searched for larvae of the zebra swallowtail butterfly, Eurytides marcellus (Papilionidae), feeding on Asimina (Annonaceae) in central Florida, USA. Predictions of host‐finding theory and interactions with the host were thus investigated in a natural setting. Wasps seldom flew to plants other than Asimina and apparently recognized the plants by visual cues. Plants were attractive regardless of host presence, as the wasps approached plants lacking E. marcellus feeding damage twice as often as they approached damaged plants. However, wasps approached damaged plants at a rate greater than their frequency in the Asimina population, indicating that they can detect host damage before they approach the plants. After approaching within 0.5?m of plants, wasps tended not to land on plants lacking feeding damage. A comparison of the plants they landed on, however, showed no consistent preferences for damaged plants. The weaker trends in the latter data indicate that the presence of feeding damage was not the sole criterion for landing, although it evidently influenced behaviour. After landing, wasps spent more time searching damaged plants than undamaged plants. Butterflies preferred to oviposit on plants shorter than those searched by T. pennator. Possible adaptive consequences of this phenomenon are discussed.     

远地测控管理与实现

中央控制分布式远地测控系统的应用十分广泛 ,其主要问题是主机与分机间的通信。本文对主机的管理策略和通信的实现方法做了简要讨论     

Host tree unsuitability recognized by pine shoot beetles in flight

Summary In spring, the landing rate of flying European pine shoot beetles,Tomicus piniperda L., on injured Scots pine diminishes as colonization continues. This is due to olfactory cues that indicate progressive host degradation. Verbenone was shown to play a role in the beetle's recognition of this unsuitability of a formerly suitable host, since the compound was increasingly released from colonized tree sections as they aged, but not from uninfested sections. Also, the release of verbenone at natural rates in the forest inhibited the attraction of beetles to host monoterpenes.     

A new feather mite genus of the family Psoroptoididae (Acari: Analgoidea) from cassowaries

A new feather mite genus Hexacaudalges gen. n. (Psoroptoididae: Psoroptoidinae) is established based on the type species Megninia casuaricola Proctor, 2001 Proctor, H. C. 2001. Megninia casuaricola sp. n. (Acari: Analgidae), the first feather mite from a cassowary (Aves: Struthioniformes: Casuariidae).. Australian Journal of Entomology, 40: 335–341. [Crossref], [Web of Science ®] , [Google Scholar], which was originally described from the southern cassowary Casuarius casuarius (Struthioniformes: Casuariidae). Morphological peculiarities of this genus, its taxonomic position within the family Psoroptoididae and possible origin are discussed. We also present a clarification of setal nomenclature for this family of mites.     

活动主机探测

活动主机探测是一些扫描技术的首要步骤,它的准确性对这些扫描技术有很重要作用.为了提高活动主机探测的准确性,本文分析了当前的活动主机探测技术,在此基础上,给出了一种采用多种活动主机技术,并行探测的方法.然后详细地说明了此方法对应的程序设计和程序实现.     

口蹄疫病毒持续感染的研究进展

口蹄疫病毒(foot-and-mouth disease virus,FMDV)能引起偶蹄动物患一种名为口蹄疫(foot-and-mouth disease,FMD)的高度接触性、发热性、急性的传染病.FMD的大规模爆发会导致整个国家或地区的动物和动物相关制品产量降低、贸易受限,造成巨大的经济损失.FMDV持续感染是造成FMDV容易蔓延并难以根除的重要原因.该文综述了FMDV持续感染期间病毒在体内的存在位置与感染特性,并以病毒与宿主细胞、宿主免疫系统之间的相互作用为重点,介绍了持续感染相关机制研究进展,总结了疫情防控相关策略,以期为解决FMDV持续感染问题提供参考.     

基于UDP的通讯及控制技术

在可视化语言环境下，利用UDP协议实现网络中点对多的通讯以及对机器的集中管理与控制，所有算法及实例均可用Delphi加以描述和实现。