Relationship of flight and reproduction in beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae), a migrant lacking the oogenesis-flight syndrome
Relationship of flight and reproduction in beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae), a migrant lacking the oogenesis-flight syndrome
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DOI：
10.1016/j.jinsphys.2010.06.006
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发表时间：
2010-11-01
影响因子：
2.2
通讯作者：
Sappington, Thomas W.
中科院分区：
文献类型：
--
作者：
Jiang, Xing Fu;Luo, Li Zhi;Sappington, Thomas W.
甜菜粘虫（Spodoptera exigua）进行长途迁徙。考虑到卵生-飞行综合症的明显缺失，我们使用飞行磨坊来研究该物种飞行与繁殖之间的相互作用。这种综合症在许多迁徙昆虫中很常见，其特点是一系列特征，包括在产卵前时期的迁徙，然后转向产卵。产卵间飞行对终生繁殖力没有负面影响。相反，当雌性在羽化后的第一天和产卵前开始飞行时，成虫的繁殖产出受到影响，这表明迁徙飞行与产卵期重叠，而不仅仅局限于产卵前期。雄性和雌性的交配状态对其飞行性能没有负面影响，但7日龄雌性的飞行距离和飞行时间显著小于未交配的雌性。此外，7日龄以下雌鸟的产卵数和交配频率与飞行性能没有显著相关，表明生殖发育是平行的，与迁徙行为无关。成虫的飞行和繁殖之间的这种独立关系与该物种非常短的产卵前期是一致的，这表明在蛹发育过程中，资源在这些活动之间被分配。综上所述，我们的研究结果并没有揭示出南鬣蜥在飞行和繁殖之间存在明显的权衡和相互抑制，这表明在这两个能量密集型过程的协调中缺乏卵生-飞行综合征。本文在总结前人研究成果的基础上，提出了该物种迁移的概念模型。(C) 2010 Elsevier Ltd.版权所有。
The beet armyworm, Spodoptera exigua, undertakes long-distance migration. We used flight mills to investigate the interaction between flight and reproduction in this species given the apparent absence of the oogenesis-flight syndrome. This syndrome, common in many migratory insects, is characterized by a suite of traits including migration during the pre-oviposition period followed by a switch to oogenesis. No negative effects of inter-ovipositional flight on lifetime fecundity were observed. Instead, adult reproductive output suffered when female flight was initiated the first day after eclosion and before oviposition, suggesting that migratory flight overlaps with the oviposition period rather than being confined to the pre-oviposition period. Mating status of both females and males had no negative influence on their flight performance except that flight distance and flight duration of 7-day-old mated females were significantly less than in unmated females. Furthermore, the number of eggs produced and mating frequency of females less than 7 days of age were not significantly correlated with flight performance, suggesting reproductive development paralleled and was independent of migratory behavior. This independent relationship between flight and reproduction of adults is consistent with the very short pre-oviposition period in this species, and suggests that resources are partitioned between these activities during pupal development. Together, our results uncovered neither obvious trade-offs nor mutual suppression between flight and reproduction in S. exigua, which indicates the lack of an oogenesis-flight syndrome for coordination of these two energy-intensive processes. We propose a conceptual model of migration for this species based on the current and previous studies. (C) 2010 Elsevier Ltd. All rights reserved.