Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Influence of different types of food on the reproductive performance of Anagyrus pseudococci (Hymenoptera: Encyrtidae).

Abstract

Potential fecundity of Anagyrus pseudococci, a primary parasitoid of Planococcus citri and Pseudococcus affinis, was studied on various food sources in the laboratory. Females provided with 50% honey solution and deprived of the opportunity of egg laying had the largest number (25.08 ± 0.63) of egg complements in the ovaries 5 days after eclosion. Fecundity was higher in the honey-fed parasitoids than those fed on honeydew and water. Water-fed parasitoids had less than 20% of the number of mature eggs than those fed on 50% honey solution. Females given honeydew of the 2 mealybug species had similar fecundities. When fed on water, rapid resorption and slow maturation of eggs occurred. Deprivation of suitable food up to 4 days after emergence showed increase in fecundity provided that 50% honey solution was available from the age of 5 days. The results are discussed in relation to the reproductive strategy of this parasitoid species.