Digitale Bibliotheek
Sluiten Bladeren door artikelen uit een tijdschrift
 
<< vorige    volgende >>
     Tijdschrift beschrijving
       Alle jaargangen van het bijbehorende tijdschrift
         Alle afleveringen van het bijbehorende jaargang
           Alle artikelen van de bijbehorende aflevering
                                       Details van artikel 21 van 35 gevonden artikelen
 
 
  Evaluation of Acetone Vapors Toxicity on Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae) Eggs
 
 
Titel: Evaluation of Acetone Vapors Toxicity on Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae) Eggs
Auteur: Ali Asghr Pourmirza
Fershteh Sadeghi Nasab
Verschenen in: Pakistan journal of biological sciences
Paginering: Jaargang 10 (2007) nr. 15 pagina's 2442-2447
Jaar: 2007
Inhoud: The efficacy of acetone vapors against carefully aged eggs of Plodia interpunctella (Hubner) at 17±1 and 27±1°C at different dosage levels of acetone over various exposure times was determined. Acetone was found to be toxic to Indian meal moth eggs. Considerable variation in the susceptibility of different age groups of eggs was apparent in the fiducial limits of the LD50 values. An inverse relationship between LD50 values and exposure times was observed in age groups of tested eggs. At 27±1°C and 24 h exposure period, eggs aged 1-2 day-old were more tolerant to acetone than other age groups, followed by 0-1 day-old, 2-3 day-old and 3-4 day-old eggs. A similar pattern of susceptibility of eggs was observed at 72 h exposure. In all bioassays, eggs exposed to higher dosages of acetone developed at smaller rate. This was significant for the eggs, which were exposed to the highest dosage for 24 h. Increasing the temperature from 17±1 to 27±1°C greatly increased the efficacy of acetone. At 27±1°C eggs of P. interpunctella were killed by less than one-third of the dosage required for control at 17±1°C. Acetone achieved 50% mortality with a dosage of 82.76 mg L-1 in 1-2 day-old eggs at 27±1°C. At this temperature hatching was retarded and greatly diminished when eggs aged 1-2 day-old were exposed to 80 mg L-1 of acetone for the 24 h exposure period. There was no evidence of a hatch delay longer than the time spent under vapors for eggs exposed at 17±1 or 27±1°C, indicating that some development must have occurred under fumigation.
Uitgever: Asian Network for Scientific Information (provided by DOAJ)
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details van artikel 21 van 35 gevonden artikelen
 
<< vorige    volgende >>
 
 Koninklijke Bibliotheek - Nationale Bibliotheek van Nederland