Characterizations of 28S ribosomal RNA region of insect parasitoids and predators associated with armored scale insects

Issue Date

10-2017

Abstract

The parasitoids and predators associated with armored scale insects on coconut were identified using 28S nucleotide regions. Based on BLAST hits, the parasitoids identified were Comperiella bifasciata, Pteroptrix sp., Coccophaginae sp., Encarsia heratyi, and Marietta sp., while the predators were Telsimia sp., Pseudoscymnus sp., Nothocolus sp., and Chilocorus cacti. However, low percent homologies were observed, ranging from 83-92%. All of the sequences of parasitoids and predators showed cytosine (C) and guanine (G) biases. Sequences of Co. bifasciata, Coccophaginae sp., E. heratyi, and Telsimia sp. were aligned among their samples, these shown with gaps, singleton variable sites and parsimony informative sites. In terms of nucleotide and haplotype diversities among the parasitoids, highest was obtained from Coccophaginae sp. and Pteroptrix sp., respectively. In the case of predators, only Telsimia sp. showed polymorphic sequence. Phylogenetic trees for parasitoids and predators were constructed.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

140-141

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

COCONUTS; COCCOIDEA; COMPERIELLA BIFASCIATA; COMPERIELLA; PEST OF PLANTS; PESTS; INSECTA; PEST INSECTS; PARASITOIDS; INSECTA AND PREDATORS; PARASITES; RNA SEQUENCE; NUCLEOTIDE SEQUENCE; IDENTIFICATION

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