LARVAL BEHAVIOR AND CANNIBALISM IN HELIOTHIS-ZEA (LEPIDOPTERA, NOCTUIDAE)
LARVAL BEHAVIOR AND CANNIBALISM IN HELIOTHIS-ZEA (LEPIDOPTERA, NOCTUIDAE)
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DOI：
10.1093/aesa/83.2.258
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发表时间：
1990-03-01
影响因子：
2.3
通讯作者：
ADLER, PH
中科院分区：
文献类型：
--
作者：
DIAL, CI;ADLER, PH
描述了与玉米夜蛾（Boddie）幼虫种内遭遇相关的行为，并使用实验室中的配对内容物来确定性别、龄期和蜕皮对同类相食的影响。五龄中间蜕皮幼虫的八种行为反应（冻结、轻弹、打击、后退、蠕动、移开、滚动和无反应）的频率存在显着差异。在所有龄期中，对接触最常见（> 35%）的反应是反冲。当被对手接触时，晚龄虫比早龄虫更频繁地攻击，而第一龄虫和第二龄虫则比晚龄虫更频繁地离开或停止运动。蜕皮幼虫攻击对手的频率明显低于中间蜕皮幼虫，并且通常表现出较低的机动性。幼虫的性别对同类相食没有显着影响。在中间蜕皮的幼虫中，晚龄幼虫对早龄幼虫的抵抗非常成功。没有幼虫会吃掉后来的幼虫。幼虫吃掉同龄幼虫所需的时间最长（第五龄之间长达 96 小时）。蜕皮的幼虫特别容易受到同类相食的影响，特别是当与晚龄的中间蜕皮幼虫配对时。在扩展内容中，中间蜕皮幼虫偶尔会蚕食较晚龄的蜕皮幼虫。这项研究的结果表明，可以根据玉米的龄期和蜕皮状态来预测玉米的同类相食行为。
Behaviors associated with intraspecific encounters in Heliothis zea (Boddie) larvae are described, and paired contents in laboratory arenas are used to determine the effects of sex, instar, and molting on cannibalism. The frequnency of eight behavioral responses (freezing, flicking, striking, recoiling, wriggling, moving away, rolling, and no response) differed significantly among intermolting larvae of the five instars. Among all instars, the most frequent (> 35%) response to contact was a recoil. When contacted by their opponents, later instars struck more often than did earlier instars, whereas first and second instars moved away or ceased movement more often than did later instars. Molting larvae struck at their opponents significantly less often than did intermolting larvae, and generally displayed less maneuverability. Sex of the larvae had no significant effect on cannibalism. Among intermolting larvae, later instars were highly successful against earlier instars; no larva cannibalized a later instar. The greatest amount of time (up to 96 h between fifth instars) was required for a larva to cannibalize another of the same instar. Molting larvae were especially vulnerable to cannibalism, particularly when paired with an intermolting larva of a later instar. In extended contents, intermolting larvae occasionally cannibalized molting larvae of later instars. The results of this study suggest that cannibalism in H. zea can be predicted on the basis of instar and molting status.