信息素

Plant protection ; Tea tussock ; Sex pheromone ; Mass trapping

植物保护；茶毛虫；性信息素；诱捕防治

A vector was introduced to describe the system structure, the complex system was transferred into a network with different node levels. Put pheromone on nodes as strength of attraction to ants. Ants guided by this attraction search in all level to find the vector component.

把系统结构向量化，将复杂系统转化为分级网络，把信息素集中在网络的节点，作为节点对蚂蚁的吸引强度，指导蚂蚁在各级节点内搜索解向量的各级对应分量。

In this study,intracellular recordings were performed and 34 neurons in MGC of Agrotis segetum were recorded;all those neurons responded to sex pheromone.12 neurons just tested by sex pheromone,and 22 neurons both tested by sex pheromone and electrical stimulation.

两种刺激方式均能诱导出兴奋反应，电刺激得到的兴奋反应比由性信息素刺激引起的要短；MGC神经元对两种刺激的超极化反应幅度影响没有显著性差别，在电刺激实验的2 2个神经元上，超极化反应幅度和抑制时间都与神经元本身放电频率有一定的相关性。

The above results demonstrated the existence of FXPRLamide family peptides in Antheraea yamamai, but its function need to be further investigated in the future.

上述结果证明天蚕含有DH、PBAN等FXPRLamide家族神经肽，其对天蚕的滞育和性信息素合成等的调控还需要进一步研究。

Lingering walks, slow moving gestures mixed with deep emotions flow across the wind and silence intensively creeping within the veins of he and she like a shot of pheromones injected in the aortal vein.

拖拉的脚步，迟疑的姿态混杂着深藏的情绪像是注射在经脉中的信息素密集的流动在他和她的静脉内。

The function of RSS has not been demonstrated clearly, considering it functions in maintaining sperm, forming copulatory plug, relating to form seminal fluid and/or attracting females during courtship.

有关这一结构的生理功能尚不完全清楚，曾有学者提出几种假设：具有支持和激活精子的作用，形成交配栓，与精液形成有关或提供求爱信息素等。

The location and structures of sex-pheromone-producing gland in female H.insularis were studied by EAG,GC,SEM,and TEM.These studies showed that thegland situate in the intersegmental membrane between the eighth and ninthabdominal segments,and is an eversible abdominal fold;Many plump cones disturbon the surface of the gland.The glandular cells of 2-day old virgin female H.insularis are arranged in one layer,among which the central cells are columnarepithelial cells and flat on two sides.The nucleus is irregular elliptical.There isevident conjugation between cells and the involution is more in the basal membraneof cell.Microvilli are distributed on the cytoplasmic membrane and linked withendocuticle on which there are many layers of chitin,and the outer cuticule is staineddeeper.The cell contains bubbles,mitochondria,glycogen deposits,roughendoplasmic reticulum and smooth endoplasmic reticulum.

结合触角电位、毛细管气相色谱、扫描电镜、透视电镜等技术对小线角木蠹蛾雌蛾腹尖末端不同组织部位提取物的测定分析以及腺体位置和形态结构的观察发现：小线角木蠹蛾性信息素分泌腺位于腹部末端8～9节之间，是一个由节间膜特化而成的上皮结构，为一可外翻的腹褶，腺体表面分布着饱满的锥形体，羽化后2天未交尾的雌蛾腺体细胞呈单层排列，腹面中央由密集的柱形上皮细胞组成，细胞排列向两侧延伸至背部，其形状由柱形逐渐变为扁平形，细胞核为椭圆形，细胞与细胞间有明显的胞连接，细胞基底膜基褶较多，质膜上分布着微绒毛，并与内表皮连接，内表皮上有多层几丁质，外角质层染色较深，细胞质中含有空泡、线粒体、脂质粒、粗面内质网和光面内质网。

Lasiocampidae ; Dendrolimus spp.; sex pheromone ; reproductive isolation

枯叶蛾科；松毛虫；性信息素；生殖隔离

The algorithm directly imports the core into each solution constructed by ants and reduces the problem scale. The new state transition rule and pheromone updating rule reflects the orderless characteristic among attributes, and benefits the search in the neighborhood of good solutions.

该算法将属性核直接引入到蚂蚁构造的每一个解中，降低了问题规模，新定义的状态转移规则和信息素更新规则体现了约简中属性间的无序性特点，有利于在优解邻域内搜索。

Key words: Plutella xylostell a; ecological factor; sex pheromone; chemical ecology; chemical resistance

关键 词：小菜蛾；生态因子；性信息素；化学生态学；抗药性

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。