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Studies on Egg Parasitoids of Helopeltis spp. (Hemiptera: Miridae)

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Title Studies on Egg Parasitoids of Helopeltis spp. (Hemiptera: Miridae)
Not Available
 
Creator K.K. Srikumar1, P.S.Bhat1, T.N. Raviprasad1, K. Rajmohana2 and K. Vanitha1
 
Subject cashew, H. antonii, Telenomus sp., biological control
 
Description Not Available
Survey conducted consecutively for three years from 2010 to 2013 at the Directorate of Cashew Research,
Puttur and the Shanthigodu Experimental station, Karnataka, South India determined three species of
egg parasitoids; Telenomus sp. (Hymenoptera: Platygastridae), Chetostricha sp. (Hymeoptera : Trichogrammatidae)
and Erthymelus helopeltidis (Hym: Myrmaridae) on Helopeltis spp. Telenomus sp. was the
predominant species and was recorded throughout the season except during the month of March and
April. It showed maximum parasitism during monsoon (June and July) season (range of 6.89-28.21%),
exhibiting significant positive correlation with rainfall (r 0.33). The occurrence of Chaetostricha sp. and
E. helopeltidis were comparatively lower with a maximum of 1.80 and 2.25 per cent, respectively during
the month of December as former showing significant negative correlation with minimum temperature
(r -0.63). The mean developmental period of Telenomus sp. was 20.6 ± 1.13 days and male and female
longevity were 2.83 ± 0.16 and 4.52 ± 0.11 days, respectively. Five distinct kinds of behaviour were observed;
drumming with antennae on the eggs, ovipositor insertion, egg marking, walking and resting.
Not Available
 
Date 2020-04-20T16:38:56Z
2020-04-20T16:38:56Z
2015-01-01
 
Type Book chapter
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/34954
 
Language English
 
Relation Not Available;
 
Publisher Springer