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survivorship during starvation for cimex lectularius l.生存在饥饿臭虫l。.pdf

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survivorship during starvation for cimex lectularius l.生存在饥饿臭虫l。

Insects 2011, 2, 232-242; doi:10.3390/insects2020232 OPEN ACCESS insects ISSN 2075-4450 /journal/insects/ Article Survivorship During Starvation for Cimex lectularius L. Andrea M. Polanco, Dini M. Miller * and Carlyle C. Brewster Department of Entomology, Virginia Tech, 216A Price Hall, Blacksburg, VA 24061, USA; E-Mails: apolanco@ (A.M.P.); carlyleb@ (C.C.B.) * Author to whom correspondence should be addressed; E-Mail: dinim@; Tel.: +1-540-231-4045; Fax: +1-540-231-2925. Received: 09 February 2011; in revised form: 20 April 2011 / Accepted: 9 May 2011 / Published: 11 May 2011 Abstract: Four bed bug strains (Cimex lectularius) with different levels of pyrethroid resistance were evaluated to determine their ability to survive extended periods of starvation. First instar bed bugs of all strains were the most vulnerable to starvation (13.8–36.3 days mean survival time). Fifth instars and adults survived the longest during starvation (41.5–142.6 days). Significant differences in survivorship during starvation were observed between resistant and susceptible strains of bed bugs. Overall, all immature and adult stages of the resistant bed bug strains had significantly shorter survival times than those of the susceptible strains (P 0.05). Keywords: Cimex lectularius; bed bug; starvation; resistance; survivorship; pyrethroids 1. Introduction The relationship between humans and bed bugs (Cimex lectularius) has been well documented throughout history [1];