Laju enkapsulasi parasitoid Anagyrus lopezi (De Santis) (Hymenoptera: Encyrtidae) oleh kutu putih singkong Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae)
2017
Adriani, Evie | Rauf, Aunu | Pudjianto
<p>Parasitoid <em>Anagyrus lopezi</em> (De Santis) (Hymenoptera: Encyrtidae) was introduced into Indonesia in early 2014 to control the cassava mealybug, <em>Phenacoccus manihoti</em> Matile-Ferrero (Hemiptera: Pseudococcidae). The objective of study was to determine encapsulation rate of parasitoid <em>A. lopezi</em> by various host instars of <em>P. manihoti</em>. Observation of encapsulation rate was made by exposing a single mated female of parasitoid on mealybug nymph-1, -2, -3, and adult in a plastic cage for 24 h. Mealybugs then were dissected and number of parasitoid eggs laid and those encapsulated were counted. Study revealed that rate of aggregate encapsulation was highest (8.4%) by adults, followed by nymph-3 (5.8%), nymph-2 (3.1%), and nymph-1 (1.1%). Rate of effective encapsulation by adults was 2.0%, whereas by nymphs about 1.0%. The low rate of encapsulation is believed not to reduce the effectiveness of parasitoid <em>A. lopezi</em> in the biological control of cassava mealybug <em>P. manihoti</em> in Indonesia.</p>
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