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Questing activity in bed bug populations: male and female responses to host signals
Physiological Entomology ( IF 1.5 ) Pub Date : 2014-05-29 , DOI: 10.1111/phen.12062
Anders Aak 1 , Bjørn A Rukke 1 , Arnulf Soleng 1 , Marte K Rosnes 2
Affiliation  

A large‐arena bioassay is used to examine sex differences in spatiotemporal patterns of bed bug Cimex lectularius L. behavioural responses to either a human host or CO2 gas. After release in the centre of the arena, 90% of newly‐fed bed bugs move to hiding places in the corners within 24 h. They require 3 days to settle down completely in the arena, with generally low activity levels and the absence of responses to human stimuli for 5 days. After 8–9 days, persistent responses can be recorded. Sex differences are observed, in which females are more active during establishment, respond faster after feeding, expose themselves more than males during the daytime, and respond more strongly to the host signal. The number of bed bugs that rest in harbourages is found to vary significantly according to light setting and sex. Both sexes stay inside harbourages more in daylight compared with night, and males hide more than females during the daytime but not during the night. The spatial distribution of the bed bugs is also found to change with the presence of CO2, and peak aggregation around the odour source is observed after 24 min. Both male and female bed bugs move from hiding places or the border of the arena toward the centre where CO2 is released. Peak responses are always highest during the night. Bed bug behaviour and behaviour‐regulating features are discussed in the context of control methods.

中文翻译:

臭虫种群的探索活动:雄性和雌性对宿主信号的反应

大型竞技场生物测定用于检查臭虫 Cimex lectularius L. 对人类宿主或 CO2 气体的行为反应时空模式的性别差异。在场地中央释放后,90% 的新喂养臭虫会在 24 小时内转移到角落的藏身之处。它们需要 3 天才能在竞技场中完全安定下来,通常活动水平较低,并且 5 天没有对人类刺激做出反应。8-9 天后,可以记录持续的反应。观察到性别差异,其中雌性在建立期间更活跃,进食后反应更快,白天比雄性暴露更多,并对宿主信号反应更强烈。发现栖息在栖息地的臭虫数量因光照环境和性别而异。与夜间相比,两性在白天更多地呆在窝点内,而雄性在白天比雌性躲藏得更多,但在夜间则不然。还发现臭虫的空间分布随着 CO2 的存在而变化,并且在 24 分钟后观察到气味源周围的峰值聚集。雄性和雌性臭虫都会从藏身之处或竞技场的边界向释放二氧化碳的中心移动。峰值反应总是在夜间最高。在控制方法的上下文中讨论了臭虫行为和行为调节功能。24 分钟后观察到气味源周围的峰值聚集。雄性和雌性臭虫都会从藏身之处或竞技场的边界向释放二氧化碳的中心移动。峰值反应总是在夜间最高。在控制方法的上下文中讨论了臭虫行为和行为调节功能。24 分钟后观察到气味源周围的峰值聚集。雄性和雌性臭虫都会从藏身之处或竞技场的边界向释放二氧化碳的中心移动。峰值反应总是在夜间最高。在控制方法的上下文中讨论了臭虫行为和行为调节功能。
更新日期:2014-05-29
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