Effects of phosphine fumigation on survivorship of Epiphyas postvittana (Lepidoptera: Tortricidae) eggs.
J Econ Entomol
; 106(4): 1613-8, 2013 Aug.
Article
em En
| MEDLINE
| ID: mdl-24020273
ABSTRACT
Light brown apple moth, Epiphyas postvittana (Walker), eggs were subjected to phosphine fumigations under normal atmospheric and elevated oxygen levels in laboratory-scale chamber experiments to compare their susceptibilities to the two different fumigation methods. In fumigations conducted under atmospheric oxygen at 5 and 10 degrees C, egg survivorship decreased with increase in phosphine concentration but then increased at a concentration of 3,000 ppm; this increase was significant at 10 degrees C. Based on egg survivorship data, phosphine fumigations conducted in a 60% oxygen atmosphere were significantly more effective than those conducted under atmospheric oxygen conditions. Oxygenated phosphine fumigations at 5 and 10 degrees C killed all 1,998 and 2,213 E. postvittana eggs treated, respectively, after 72 h of exposure. These results indicate the great potential of oxygenated phosphine fumigation for the control of E. postvittana eggs.
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Base de dados:
MEDLINE
Assunto principal:
Fosfinas
/
Atmosfera
/
Fumigação
/
Inseticidas
/
Mariposas
Limite:
Animals
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article