The Survival of the Madeira Cockroach in Various Atmospheres

Autor:	J. C. Keller, R. A. Fulton, S. R. Dutky, M. S. Schechter, W. N. Sullivan
Rok vydání:	1961
Předmět:	Cockroach Ecology biology chemistry.chemical_element General Medicine Partial pressure Nitrogen Oxygen Lithium hydroxide Atmosphere chemistry.chemical_compound chemistry Volume (thermodynamics) Insect Science biology.animal Environmental chemistry Carbon dioxide
Zdroj:	Journal of Economic Entomology. 54:661-663
ISSN:	1938-291X 0022-0493
DOI:	10.1093/jee/54.4.661
Popis:	The Madeira cockroach ( Leucophaea maderae (F.)) has characteristics that should make it useful for biological studies on factors affecting life in outer space. In studies to determine a favorable atmosphere for survival in satellites the insects were sealed in 12-ounce containers with oxygen, nitrogen, helium, or mixtures of these gases but without food or water. Lithium hydroxide was used to absorb the carton dioxide evolved in most of the tests. The survival time was short with very low or with very high concentrations of oxygen. An atmosphere containing 55% to 58% of oxygen and 42% to 45% of nitrogen by volume appeared to be near optimum for the survival of the cockroaches, probable vided carbon dioxide was removed. The gradual reduction in the partial pressure as oxygen was utilized by the insects probably was a factor in the decrease of activity of the cockroaches and in the increase of their survival time.
Databáze:	OpenAIRE
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