And it is a hot topic in the field of bark beetle ecology research in recent years.

也是近年來小蠹蟲生態(tài)學(xué)研究的一個熱門話題18禁无码黄片。

THE mountain bark beetle is a familiar pest in the forests of British Columbia.

山樹皮甲蟲是不列顛哥倫比亞省森林里常見的害蟲男人猛进女人大腿视频。

As with the mountain bark beetle, it is not entirely clear why this is happening.

至于山地樹皮甲蟲，現(xiàn)不完全清楚為什么會發(fā)生這種蟲害役情亚洲三级片国产AV。

He could see the beetle under the bark, and draw it forth unharmed for us to squint at through the magnifying glass.

他能看到樹皮下的甲蟲欧美在线26uuu免费，并把它毫發(fā)無傷地捉下來，放在放大鏡下讓我們看中文字幕5页。

Since the mid-1970s, about 50 percent, or 1 million acres (400,000 hectares), of the Kenai Peninsula's adult spruce trees have succumbed to the spruce bark beetle.

自從20世紀(jì)70年代中期欧美三级久久免费片，大約50％，或100萬英畝（400国产.com，000公頃）人成视频免费视频在线观看播放，奇奈半島的成年云杉樹已經(jīng)屈服于云杉樹皮甲蟲。

Bark beetle is one of approximately 220 genera with 6,000 species of beetles in the family Scolytidae, which is the most common and important pest infesting forest.

小蠹蟲是鞘翅目小蠹科昆蟲的總稱se哟哟在线观看，全世界約有220屬男人直接插女人下面黄视频在线播放，6000種左右，是林木害蟲中一個極重要類群日韩精品影视系列在线播放。

At present,restricted by customs clearance time and quarantine facility,the main method of bark beetle quarantine is to check the cargo with eyes and hand.It is hard to avoid oversight with the backward technology.

由于其在木材和樹皮下危害国产一级AV网站在线，使得小蠹蟲隨木材進口和各種貨物木質(zhì)包裝材料在國際間傳播的機會大大增加，因此具有十分突出的檢疫重要性日本免費黃色網站com。

Feasibility study on application of DNA bar-coding technology in molecular identification of ScolytideaCO I gene of 15 bark beetle species collected from different regions and host is studied to discuss the feasibility of application of DNA bar-coding technology in Scolytidea molecular identification.

基于線粒體COⅠ基因的DNA條形碼技術(shù)應(yīng)用于小蠹科昆蟲分子鑒定的可行性研究通過對采自不同地區(qū)www4438、不同寄主的15個小蠹蟲樣本的線粒體COⅠ基因研究，對基于線粒體COⅠ基因的DNA條形碼技術(shù)應(yīng)用于小蠹科昆蟲分子鑒定的可行性進行了探討黄色视频在线播放特级a级。

In the experiment,EAG technology was used to study the olfactory response of three typical bark beetle species to each one of the semiochemicals at different concentration,and the walking responses of the three species to each one and the different combinations of the semiochemicals were observed by using Y-tube olfactometer.

本研究通過觸角電位技術(shù)女人被草视频，研究了3種具有代表性的小蠹蟲對不同信息化合物及其不同濃度的EAG反應(yīng)，并結(jié)合"Y"型嗅覺儀測定了3種小蠹蟲對不同信息化合物及其組合的趨向反應(yīng)91小黄片。

Although each of the 11 species of the bark beetle had its own spatial niche and overlogs niche, they could attain competitive equilibrium and coexistance according to their requirment for different nutrition and space, the interference of population density and the different time interval attacking the host tree.

雖然被操高潮了视频，這11種小蠹蟲具有各自不同的生態(tài)位寬度，且存在不同程度的生態(tài)位重疊插入美女国产，但各小蠹蟲可依據(jù)其對寄主樹木營養(yǎng)和空間需求的不同日韩欧美久久精品影视大全免费观看、種群密度的相互制約，以及入侵寄主樹木時序的差異達到競爭的平衡和共存免费AV免费网站。