Influence of carbon dioxide gas on German cockroach (Dictyoptera: Blattellidae) knockdown, recovery, movement and feeding
| Autor: | Philip G. Koehler, F. M. Oi, D. D. Branscome |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
German cockroach
Gene knockdown Cockroach biology Physiology Hydramethylnon Ecology Dictyoptera biology.organism_classification Blattellidae chemistry.chemical_compound Animal science chemistry Insect Science biology.animal Carbon dioxide Carbon dioxide exposure Ecology Evolution Behavior and Systematics |
| Zdroj: | Physiological Entomology. 30:144-150 |
| ISSN: | 1365-3032 0307-6962 |
| DOI: | 10.1111/j.1365-3032.2005.00439.x |
| Popis: | Carbon dioxide anaesthesia differentially affects the knockdown and recovery of cockroaches, depending on the strain and the length of time that the colony has been subjected to a CO2 regime. Adult males from two laboratory and two field-collected strains of German cockroaches, Blattella germanica, are knocked down within 7–45 s after exposure to CO2. After 5 min of CO2 exposure, presumptive recovery (i.e. the time for the cockroach to right itself after knockdown) for laboratory strains occurs significantly sooner than for field-collected strains. Control cockroaches, exposed to compressed air rather than CO2, exit harbourage cups rapidly (≤3.20 min). However, although allowed a recovery period of 5 min, significant movement impairment occurs for all cockroach strains anaesthetized with CO2. Carbon dioxide exposure significantly reduces consumption of 2.15% hydramethylnon bait and delays mortality even when 24 h is allowed for recovery before bait placement. Cockroaches allowed to recover for 48 h after 5 min of CO2 exposure consume significantly more bait and die significantly faster than CO2 exposed groups allowed 24 h of recovery, and mortality is not significantly different from nonanaesthetized bait-fed controls. |
| Databáze: | OpenAIRE |
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