The invasive coconut scale insect, aspidiotus rigidus Reyne: life cycle and mass rearing

Issue Date

10-2017

Abstract

The life cycle and mass rearing of the coconut scale insect (CSI), Aspidiotus rigidus reyne were studied. Mass rearing was successfully conducted on mangosteen wherein A. rigidus completed its development and reproduction. Pure culture was also possible on mangosteen due to non-preference of other CSI species such as A. destructor, as validated by the DNA sequencing of the reared insects. The life cycle study was conducted on mangosteen seedlings in a greenhouse at 18˚C and 52% RH. CSI underwent several stages: egg (2.3 ± 0.18 days), crawlers (1st instar) (2.03 ± 0.18 days), white cap (3.50 ± 0.81 days), nipple stage (9.53 ± 1.61 days), 2nd instar (11.60 ± 1.91), 3rd instar and adult-female (24.87 ± 2.32 days); pre-pupa and pupa-male (10.67 ± 1.01 days) adult-male inside the scale (4.36 ± 0.77 days). The female A. rigidus completed its life cycle in 52 days; the male in 42 days. Female CSI produced an average of 48 eggs. The information gathered was used in the conduct of studies on identifying resistant variety(ies) for coconut breeding program.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

176

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

ASPIDIOTUS, COCCOIDEA, LIFE CYCLE; MASS REARING; DNA SEQUENCE; BIOLOGICAL CONTROL; INSECT CONTROL, IDENTIFICATION

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