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河南省苗期玉米田草地贪夜蛾幼虫与常见其他种类害虫的识别特征 被引量:19
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作者 李国平 王亚楠 +3 位作者 李辉 黄建荣 何运转 封洪强 《中国生物防治学报》 CSCD 北大核心 2019年第5期747-754,共8页
草地贪夜蛾Spodoptera frugiperda(J. E. Smith)是全球预警的一种重大农业害虫。2019年1月份入侵我国,半年时间已迅速扩散和蔓延至21个省市。在黄淮海夏玉米地区,草地贪夜蛾幼虫与甜菜夜蛾、棉铃虫、亚洲玉米螟、劳氏黏虫等鳞翅目害虫... 草地贪夜蛾Spodoptera frugiperda(J. E. Smith)是全球预警的一种重大农业害虫。2019年1月份入侵我国,半年时间已迅速扩散和蔓延至21个省市。在黄淮海夏玉米地区,草地贪夜蛾幼虫与甜菜夜蛾、棉铃虫、亚洲玉米螟、劳氏黏虫等鳞翅目害虫常常混合发生。这几种幼虫特别是低龄幼虫的形态特征及取食为害玉米的症状相似,容易混淆,给田间鉴定带来困扰。本文详细比较了草地贪夜蛾与甜菜夜蛾、棉铃虫、亚洲玉米螟和劳氏黏虫的低龄和高龄幼虫的形态差别,以期为黄淮海玉米田苗期草地贪夜蛾的准确监测和预报提供技术支撑。 展开更多
关键词 草地贪夜蛾 玉米苗期害虫 幼虫形态特征
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爱玉子传粉榕小蜂幼虫龄数的划分
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作者 吴婷婷 吴文珊 +3 位作者 陈友铃 陈小贞 黄镇 周莲香 《环境昆虫学报》 CSCD 北大核心 2022年第1期204-211,共8页
桑科榕属植物爱玉子既是亚热带植物生态系统的关键树种,也是驯化成功的特有果树,它依赖爱玉子传粉榕小蜂传粉才能结实,而榕小蜂幼虫生活在密闭的榕果内,虫体小、历期长,龄数划分困难。本文旨在确定爱玉子传粉榕小蜂的龄数及其划分标准,... 桑科榕属植物爱玉子既是亚热带植物生态系统的关键树种,也是驯化成功的特有果树,它依赖爱玉子传粉榕小蜂传粉才能结实,而榕小蜂幼虫生活在密闭的榕果内,虫体小、历期长,龄数划分困难。本文旨在确定爱玉子传粉榕小蜂的龄数及其划分标准,探讨其个体发育进度的最佳形态特征和指标。采用野外定期取样的方法,对662头爱玉子传粉榕小蜂幼虫的头壳宽、体长和第3体节宽等进行测量,利用频次分布分析、均差分析和回归分析等方法分析幼虫形态与龄数的关系。以头壳宽、体长和第3体节宽为分龄指标的频次分布分析表明,爱玉子传粉榕小蜂幼虫的龄数共有5个龄期;回归分析显示,幼虫头壳宽、体长和第3体节宽的测量值与龄数之间均呈极显著正相关关系(P<0.01),由于头壳宽与龄数回归曲线(y=23.49e^(0.49x))的判定系数(R^(2)=0.98)最高,头壳宽可作为分龄的最佳测量指标。冬季爱玉子传粉榕小蜂1~5龄幼虫的龄期分别为8.05,10.47,14.70,46.07和91.35 d,幼虫期约171 d,并对各龄幼虫的形态特征进行了描述和比较。头壳宽可作为划分榕小蜂幼虫龄数可靠的分龄指标,为进一步研究榕小蜂生物学特性及其保护榕小蜂资源奠定基础。 展开更多
关键词 头壳宽 体长 第3体节宽 频次分布 幼虫形态特征
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桔实瘿蚊对沙田柚的为害及其防治
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作者 区善汉 叶鸿恩 +4 位作者 杨德彪 欧少岳 韦光福 贾成东 韦祯学 《广西园艺》 2002年第2期16-17,共2页
关键词 桔实瘿蚊 沙田柚害虫 幼虫形态特征 为害规律 防治
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An integrative study of larval organogenesis of American shad Alosa sapidissima in histological aspects 被引量:1
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作者 高小强 洪磊 +3 位作者 刘志峰 郭正龙 王耀辉 雷霁霖 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2016年第1期136-152,共17页
We describe organogenesis at a histological level in American shad( Alosa sapidissima) larvae from 0 until 45 days after hatching(DAH). Larval development was divided into four stages based on the feeding mode,externa... We describe organogenesis at a histological level in American shad( Alosa sapidissima) larvae from 0 until 45 days after hatching(DAH). Larval development was divided into four stages based on the feeding mode,external morphological features,and structural changes in the organs: stage 1(0–2 DAH),stage 2(3–5 DAH),stage 3(6–26 DAH) and stage 4(27–45 DAH). At early stage 2(3 DAH),American shad larvae developed the initial digestive and absorptive tissues,including the mouth and anal opening,buccopharyngeal cavity,oesophagus,incipient stomach,anterior and posterior intestine,differentiated hepatocytes,and exocrine pancreas. The digestive and absorptive capacity developed further in stages 2 to 3,at which time the pharyngeal teeth,taste buds,gut mucosa folds,differentiated stomach,and gastric glands could be observed. Four defined compartments were discernible in the heart at 4 DAH. From 3 to 13 DAH,the excretory systems started to develop,accompanied by urinary bladder opening,the appearance and development of primordial pronephros,and the proliferation and convolution of renal tubules. Primordial gills were detected at 2 DAH,the pseudobranch was visible at 6 DAH,and the filaments and lamellae proliferated rapidly during stage 3. The primordial swim bladder was first observed at 2 DAH and started to inflate at 9 DAH; from then on,it expanded constantly. The spleen was first observed at 8 DAH and the thymus was evident at 12 DAH. From stage 4 onwards,most organs essentially manifested an increase in size,number,and complexity of tissue structure. 展开更多
关键词 Alosa sapidissima larval development ONTOGENY HISTOLOGY organ differentiation
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THE MORPHOLOGY OF MATURE LARVAE OF THREE ENNOMINAE SPECIES IN KOREA (LEPIDOPTERA:GEOMETRIDAE)
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作者 朴美花 陈学新 李灿镛 《Entomologia Sinica》 CSCD 2003年第1期73-79,共7页
The larval external morphologies of Ectropis crepuscularia (Denis & Sc hiffermüller), Zamacra juglansiaria (Graeser) and Phigalia verecundaria (Leech) of Ennominae are described and illustrated.
关键词 larval morphology ENNOMINAE GEOMETRIDAE LEPIDOPTERA Korea.
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SOME BIOLOGICAL ASPECTS AND A UNIQUE HABITAT CHOICE OF DAMSELFLY INDOCNEMIS ORANG FOERSTER(ODONATA:PLATYCNEMIDIDAE)FROM MALAYSIA 被引量:2
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作者 Y.Norma-Rashid 《Entomologia Sinica》 CSCD 2003年第2期115-120,共6页
The hemimetabolous preliminary studies on the life cycle of Indocnemis orang is here reported for the first time, being completed in 6 instars for a minimum duration of 69 days. It can be classified as a stenotopic s... The hemimetabolous preliminary studies on the life cycle of Indocnemis orang is here reported for the first time, being completed in 6 instars for a minimum duration of 69 days. It can be classified as a stenotopic species being sensitive to biotope requirements but having tolerance towards fluctuating water qualities during its developmental process. The need for caution in the interpretation of bioindicator species for habitat assessment and biomonitoring is here both indicated and discussed. 展开更多
关键词 DRAGONFLIES LIFE-HISTORY habitat MALAYSIA MORPHOMETRICS larvae
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