A comparison of the pre-calling period between Japanese and southeastern Asian populations of Spodoptera litura

• 来源期刊: 中国昆虫科学（英文版）
• 关键词: geographical variation long distance migration pre-calling period Spodoptera litura
• 年，卷（期）: 2006,（3）
• 页码范围: 211-216
• 页数: 6页
• 语种: 英文

摘要

The pre-calling behavior of female adults of the common cutworm, Spodoptera litura (Lepidoptera: Noctuidae) collected in southern Japan and southeastern Asian countries was investigated. Most females started calling on days 1-4 after adult emergence. In three populations obtained in Saga prefecture in Kyushu mainland, Japan, two different patterns of pre-calling period (PCP) were observed: one was the above-mentioned pattern shown by most individuals, and the other was a pattern in which females sexually matured within several hours after emergence. Diel periodicity was shown in the time of calling activity, and its pattern varied among the populations. Pre-calling period was stable over successive generations in the laboratory.