Tropical Wetland Journal
Vol 3 No 2 (2017): Tropical Wetland Journal

THE LIFE TABLE OF Spodoptera pectinicornis Hampson AS BIOLOGICAL CONTROL AGENT OF WATER LETTUCE (Pistia stratiotes L.) WEED

Lyswiana Aphrodyanti (Department of Plant Protection plant, Faculty of Agriculture University of Lambung Mangkurat)
Abdul Haris (Department of Soil, Faculty of Agriculture University of Lambung Mangkurat)
Lidia Luisa Momongan (Department of Plant Pests and Diseases, Faculty of Agriculture University of Lambung Mangkurat)



Article Info

Publish Date
04 Jul 2017

Abstract

The table of life can provide information on birth (natality), death (mortality) and the opportunity to breed, so it can be used as a parameter of the behavior of population development.The purpose of this study was to determine the calculation of life table of S. pectinicornis Hampson as biological control agent of water lettuce (P. stratiotes) weed.The table of life is done by observing survival ability, mortality and fecundity of S. pectinicornis of a cohort of 300 eggs by looking at all the stages from egg, larva, pupa, and imago, and fecundity of female imago per day. The research was conducted in a condition of unlimited food resources and environment free of natural enemies. Parameters observed were gross reproductive rate (GRR), net reproductive rate (Ro), average of generation time (T), intrinsic rate of growth (r), and limited rate of growth (λ). The research result of the life table calculation showed that GRR value was 350.29, the value of net reproductive rate (Ro) was 19.59 descendants, the average of generation time (T) was 29.47 days, the value of intrinsic rate of accretion (r) was 0.10 and the value of limited rate of accretion (λ) was 1.11.

Copyrights © 2017






Journal Info

Abbrev

twj

Publisher

Subject

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Education Medicine & Pharmacology Other

Description

The journal will accept any manuscripts related to tropical wetland issues. The articles in this journal may from dissertations, theses, research reports, scientific papers and articles reviews. This journal is published in every 2 (twice) in a year (July and ...