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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 72, No. 3, 2012, pp. 338-344
Bioline Code: cj12053
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 72, No. 3, 2012, pp. 338-344

 en PARASITOIDISM RATE AND LIFE TABLE PARAMETERS OF Aphytis diaspidis check for this species in other resources (HOWARD) (HYMENOPTERA: APHELINIDAE) AND Hemiberlesia lataniae check for this species in other resources (SIGNORET) (HEMIPTERA: DIASPIDIDAE)
Navea, Dennis O. & Vargas, Robinson M.

Abstract

Latania scale, Hemiberlesia lataniae check for this species in other resources (Signoret), has become a major pest of avocado ( Persea americana check for this species in other resources Mill.) in Chile and has reached high populations in the fruit because of limited natural control. The objective of this study was to identify the biological parameters of the parasitoid Aphytis diaspidis check for this species in other resources (Howard) as a control agent of latania scale. Postembryonic development, parasitoidism rate, and life table parameters of the parasitoid and scale were determined under laboratory conditions. Aphytis diaspidis postembryonic development and parasitoidism rate varied significantly when evaluated on distinct latania scale stages with the highest survival (56%) occurring at the third scale stage, it also had the shortest development time between egg and adult (19.14 d) and the highest parasitoidism rate (66%). The intrinsic growth rate (rm) was higher for A. diaspidis (rm = 0.099) than latania scale (rm = 0.068). These laboratory results demonstrated that A. diaspidis is an effective parasitoid for decreasing H. lataniae populations, especially in the third stage.

Keywords
Postembryonic development, life tables, parasitoidism, biological control, white scale, avocado

 
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