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Gol'Berg, A.M., Entomology laboratory, ARO, Gilat Regional Experiment Station, Negev, Israel
Some biological aspects of the encyrtid parasite Pauridia peregrina Timberlake were studied. Non-ovipositing ♀♀ lived longer than ovipositing ♀♀. Parasite survival was strongly affected by relative humidity. Females survived best at 21.5° and 92% r.h.; 41.0° and 45% r.h. caused 96.7% mortality within 3 hr. Total number of eggs laid was not influenced by 49-71% r.h. at 26.5°. Lowering of the r.h. increased the proportion of the eggs laid on the first day to 91.1, 65.9 and 59.1%, respectively, at 49, 57, and 71% r.h. The parasite could complete development in mealybugs (Plaococcus citri (Risso)) growing on young twigs of grapefruit. Grapefruit sepals provided good protection to mealybugs against P. peregrina. © 1982 Springer-Verlag.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
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תנאי שימוש
Influence of temperature and relative humidity on survival and fecundity of Pauridia peregrina, a parasite of mealybugs and its interactions with Planococcus citri
32
Gol'Berg, A.M., Entomology laboratory, ARO, Gilat Regional Experiment Station, Negev, Israel
Influence of temperature and relative humidity on survival and fecundity of Pauridia peregrina, a parasite of mealybugs and its interactions with Planococcus citri
Some biological aspects of the encyrtid parasite Pauridia peregrina Timberlake were studied. Non-ovipositing ♀♀ lived longer than ovipositing ♀♀. Parasite survival was strongly affected by relative humidity. Females survived best at 21.5° and 92% r.h.; 41.0° and 45% r.h. caused 96.7% mortality within 3 hr. Total number of eggs laid was not influenced by 49-71% r.h. at 26.5°. Lowering of the r.h. increased the proportion of the eggs laid on the first day to 91.1, 65.9 and 59.1%, respectively, at 49, 57, and 71% r.h. The parasite could complete development in mealybugs (Plaococcus citri (Risso)) growing on young twigs of grapefruit. Grapefruit sepals provided good protection to mealybugs against P. peregrina. © 1982 Springer-Verlag.
Scientific Publication
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