Chapter 5 Migratory and Polyphagous Pest Insects Wu Junxiang可Li Yiping 他. 1003coi▣
+ Chapter 5 Chapter 5 Migratory and Migratory and Polyphagous Polyphagous Pest Insects Pest Insects Wu Junxiang Junxiang & Li Yiping Junxw@nwsuaf.edu.cn lyp2003@126.com
Lecture Outline Overview 小地老虎成 Biological Characteristics 虫 Bionomics Black Cutworm Oriental Armyworm Survey and management
Lecture Outline Lecture Outline ¾ Overview ¾ Biological Characteristics ¾ Bionomics ¾ Black Cutworm ¾ Oriental Armyworm ¾ Survey and management
OVERVIEW 1.Definition of migratory pests Annually migrate a long distance at the same season each year; Heredity characteristics suitable for environments. 2.Migratory Advantages Decreasing interspecies competition; Escaping from environmental disadvantages
1. Definition of migratory pests Annually migrate a long distance at the same season each year; Heredity characteristics suitable for environments. 2. Migratory Advantages Decreasing interspecies competition; Escaping from environmental disadvantages. OVERVIEW OVERVIEW
OVERVIEW 3.Migratory Process Beginning to fly (emigration) Transfer (fly with wind) Landing (immigration) 4.Polyphagous habits
3. Migratory Process Beginning to fly (emigration) Transfer (fly with wind) Landing (immigration) 4. Polyphagous habits OVERVIEW OVERVIEW
OVERVIEW 5.Categories More than 10 species recorded in China. Typical migratory species include: Black cutworm Agrotis ypsilon; Oriental armyworm Leucania separata; Beet armyworm Laphygma exigua; Cnaphalocrocis medinalis(稻纵卷叶螟)； Brown rice planthopper Nilaparvata lugens; White-backed rice planthopper Sogota furcifera
5. Categories More than 10 species recorded in China. Typical migratory species include: Black cutworm Agrotis ypsilon; Oriental armyworm Leucania separata; Beet armyworm Laphygma exigua; Cnaphalocrocis medinalis (稻纵卷叶螟); Brown rice planthopper Nilaparvata lugens; White-backed rice planthopper Sogota furcifera. OVERVIEW OVERVIEW