Haplotype diversity of aspidiotus species in the Philippines using the 28S rRNA gene region

Issue Date

10-2017

Abstract

The haplotype diversity of coconut scale insect (CSI) populations collected from 10 provinces in the Philippines was investigated using the 28S region of the large subunit ribosomal RNA gene. Three Aspidiotus species, namely A. destructor Signoret, A. rigidus Reyne and A. excisus Green were identified. Molecular analyses using BioEdit and DNAsp revealed the presence of at least seven haplotypes of A. destructor with the dominant haplotype (HF=0.575) found in six provinces in the country including Bataan, Batangas, Laguna, Quezon, Camarines Norte, and Zamboanga City. Three haplotypes were observed for A. rigidus with the most dominant (HF=0.800) covering Bataan, Laguna, Quezon, and Basilan. On the other hand, two haplotypes were revealed for A. excisus with the dominant (HF=0.857) found in Laguna and Basilan. Haplotype diversity (Hd) index of the Aspidiotus species was 0.633, 0.346, and 0.286 for A. destructor suggests high species survival through adaptation to varied local environments as depicted by its wide distribution, and host range. The phylogenetic analysis suggested close association of the species within the genus Aspidiotus but distinct groupings were formed when compared to the other genera within the tribe Aspidiotini.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

140

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

COCONUTS; ASPIDIOTUS; COCCOIDEA; DIASPIDIDAE; PEST OF PLANTS; PEST; INSECTA; PEST INSECTS; IDENTIFICATION; PHYLOGENY; RNA SEQUENCE; GENETIC VARIATION; PHILIPPINES

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