Effect of temperature on survival of Steinernema seemae, S. masoodi and S. carpocapsae (Rhabditida: Steinernematidae) and their subsequent infectivity to prepupa of Helicoverpa armigera (Hübner)

The survival and infectivity of three indigenous entomopathogenic nematodes, Steinernema seemae, S. masoodi and S. carpocapsae at different temperatures (15, 20, 25, 30, 35, 40 and 45°C) were studied against prepupa of Helicoverpa armigera (Hübner). Percent survival of nematodes decreased with incre...

Full description

Saved in:
Bibliographic Details
Published in:Archiv für Phytopathologie und Pflanzenschutz 2007-06, Vol.40 (3), p.183-187
Main Authors: Ali, S. S., Pervez, R., Hussain, M. Abid, Ahmad, R.
Format: Article
Language:English
Subjects:
Entomopathogenic nematode (EPN)
Helicoverpa armigera
infectivity
Nematoda
Rhabditida
Steinernema
Steinernematidae
survival
temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The survival and infectivity of three indigenous entomopathogenic nematodes, Steinernema seemae, S. masoodi and S. carpocapsae at different temperatures (15, 20, 25, 30, 35, 40 and 45°C) were studied against prepupa of Helicoverpa armigera (Hübner). Percent survival of nematodes decreased with increases in temperature. However, 46.6% of the populations were able to survive and tolerate the sub-lethal temperature (45°C) treatment for 6 h. Out of the populations that survived, 43.3% infectivity was observed against H. armigera prepupa. The survivors did not infect at 25 and 30°C, rather their activity was found optimum. These heat tolerant isolates could play a vital role in the management of susceptible stages of H. armigera at high temperature regimes and for the management of other insect pests of agricultural importance, which pupate in the soil.
ISSN:0323-5408
1477-2906
DOI:10.1080/03235400500383750