本文選題：短梳角野螟　切入點：形態(tài)特征　出處：《植物保護》2017年03期 　論文類型：期刊論文

【摘要】：短梳角野螟Meroctena tullalis(Walker)是為害紅花天料木Homalium hainanense Gagnep的重要食葉害蟲,其形態(tài)描述和幼蟲準確分齡是開展害蟲生物生態(tài)學(xué)及林間防控研究的重要依據(jù)。本文采用林間采樣與室內(nèi)飼養(yǎng)相結(jié)合的方法,首次對短梳角野螟卵、幼蟲、蛹和成蟲的形態(tài)及生活習(xí)性和生活史進行調(diào)查和描述。并通過測定頭寬、頭長和體長3項分齡指標,利用SPSS Statistics19.0統(tǒng)計軟件對數(shù)據(jù)進行頻次分析,結(jié)合戴氏法則和線性回歸等試圖探究準確劃分幼蟲蟲齡的可靠方法。結(jié)果表明:短梳角野螟幼蟲隨齡期增長,幼蟲顏色由淺黃綠色逐漸變?yōu)樯罹G色,頭部由肉色逐漸變深,最后形成外圍紅褐色中間深肉色。通過頻次分析統(tǒng)計,測得短梳角野螟幼蟲蟲齡為5齡;頭寬可作為最佳分齡指標,且頭寬測量指標平均值自然對數(shù)與幼蟲齡期呈線性關(guān)系(y=0.181 6x-0.602 3,R2=0.999 1)。頭長和體長統(tǒng)計檢驗,符合戴氏法則,但頻次分析5個峰值不是很明顯,且有部分區(qū)域重疊,只能作為劃分蟲齡的輔助指標。本研究確定了短梳角野螟各蟲態(tài)的形態(tài)特征及劃分幼蟲齡期的最佳指標,以期為該蟲林間防治提供生物學(xué)依據(jù)。
[Abstract]:Meroctena tullalis Walker is an important leaf-eating pest of Homalium hainanense Gagnep. The morphological description and accurate larval age are the important basis for the study of pest biological ecology and interstand control and control. In this paper, the method of interstand sampling and indoor feeding was used to study the eggs and larva of C. brevis for the first time. The morphology, life habits and life history of pupae and adult were investigated and described. The frequency of the data was analyzed by SPSS Statistics19.0 software by measuring three age indexes: head width, head length and body length. The reliable method of accurately dividing the larval age of the larvae was explored by combining the Dyschner's rule and linear regression. The results showed that the larval color changed from light yellowish green to dark green, and the head color gradually increased from flesh color to dark green. Through frequency analysis and statistics, it was found that the larval age was 5 years, and the head width could be used as the best age index. The average natural logarithm of head width was linearly related to larval age. The statistical test of head length and body length was consistent with de's rule, but the five peak values of frequency analysis were not obvious, and some areas overlapped. In order to provide biological basis for the control of this insect, the morphological characteristics of each species and the best index for determining the larval age were determined in this study.
【作者單位】： 中南林業(yè)科技大學(xué)森林有害生物防控湖南省重點實驗室經(jīng)濟林培育與保護省部共建教育部重點實驗室;
【基金】：國家林業(yè)公益性行業(yè)科研專項(201304402)
【分類號】：S433.4

【參考文獻】

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本文編號：1609705