Incidence of tobacco stemborer, scrobipalpa aptatella (Walker) (Lepidoptera: gelechiidae) in Mindanao with notes on its biology

Issue Date

10-2017

Abstract

Scrobipalpa aptatella (Walker) is a reported pest of tobacco from various countries including the Philippines. It is considered a minor pest in the Ilocos Region where tobacco is normally grown once a year. Recently, there has been increased level of importance of S. aptatella in tobacco grown in Mindanao due to unlimited food resource where tobacco is planted year-round. Swelling or galling of damaged plant parts, stunting, and unusual branching of young plants are common field symptoms of feeding damage of the larvae. High incidence of the pest reduced yield by 50% in 2016, which is expected to decline even more in the absence of an effective management protocol. The life history of S. aptatella from Mindanao was studied on tobacco under laboratory conditions. The incubation period ranged from 4-5 day. Development time of the larva was about 16 days and pupa, 4-5 days. Total development time (egg to adult) was about 24 days. Fecundity ranged from 3-127 eggs per female. Longevity of male ranged from 5-28 days while the female had shorter lifespan ranging from 3-15 days.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

177

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

NICOTIANA TABACUM; SCROBIPALPA; INSECTA; PESTS; PEST INSECTS; PEST OF PLANTS; LIFE CYCLE; PLANT DAMAGE

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