German Cockroach (Orthoptera: Blatellidae) Mortality on Various Surfaces Following Application of Diazinon

1985 ◽  
Vol 78 (4) ◽  
pp. 733-737 ◽  
Author(s):  
Elray M. Roper ◽  
Charles G. Wright
Keyword(s):  
German Cockroach

scholarly journals Salivary Digestion Extends the Range of Sugar-Aversions in the German Cockroach

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 263
Author(s):  
Ayako Wada-Katsumata ◽  
Coby Schal
Keyword(s):  
Rapid Evolution ◽  
German Cockroach ◽  
Gustatory System ◽  
Resistance Trait ◽  
Cockroach Blattella Germanica ◽  
Behavioral Resistance ◽  
Gustatory Information ◽  
The Impact ◽  
Hydrolysis Of ◽  
Glucose Aversion

Saliva has diverse functions in feeding behavior of animals. However, the impact of salivary digestion of food on insect gustatory information processing is poorly documented. Glucose-aversion (GA) in the German cockroach, Blattella germanica, is a highly adaptive heritable behavioral resistance trait that protects the cockroach from ingesting glucose-containing-insecticide-baits. In this study, we confirmed that GA cockroaches rejected glucose, but they accepted oligosaccharides. However, whereas wild-type cockroaches that accepted glucose also satiated on oligosaccharides, GA cockroaches ceased ingesting the oligosaccharides within seconds, resulting in significantly lower consumption. We hypothesized that saliva might hydrolyze oligosaccharides, releasing glucose and terminating feeding. By mixing artificially collected cockroach saliva with various oligosaccharides, we demonstrated oligosaccharide-aversion in GA cockroaches. Acarbose, an alpha-glucosidase inhibitor, prevented the accumulation of glucose and rescued the phagostimulatory response and ingestion of oligosaccharides. Our results indicate that pre-oral and oral hydrolysis of oligosaccharides by salivary alpha-glucosidases released glucose, which was then processed by the gustatory system of GA cockroaches as a deterrent and caused the rejection of food. We suggest that the genetic mechanism of glucose-aversion support an extended aversion phenotype that includes glucose-containing oligosaccharides. Salivary digestion protects the cockroach from ingesting toxic chemicals and thus could support the rapid evolution of behavioral and physiological resistance in cockroach populations.

scholarly journals THE PERIOD GENE OF THE GERMAN COCKROACH AND ITS NOVEL LINKING POWER BETWEEN VERTEBRATE AND INVERTEBRATE

2002 ◽  
Vol 19 (6) ◽  
pp. 1023-1040 ◽  
Author(s):  
George Guan-Hua Lin ◽  
Ruey-Fen Liou ◽  
How-Jing Lee
Keyword(s):  
German Cockroach ◽  
Period Gene

Origin and Extent of Resistance to Fipronil in the German Cockroach, Blattella germanica (L.) (Dictyoptera: Blattellidae)

2003 ◽  
Vol 96 (5) ◽  
pp. 1548-1558 ◽  
Author(s):  
Glenn L. Holbrook ◽  
Jamie Roebuck ◽  
Clyde B. Moore ◽  
Michael G. Waldvogel ◽  
Coby Schal
Keyword(s):  
Blattella Germanica ◽  
German Cockroach ◽  
Cockroach Blattella Germanica
Sign in / Sign up

Export Citation Format

Share Document