caa a22 4500 477073557 CHVBK 20180405111433.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02764252 doi (NATIONALLICENCE)springer-10.1007/BF02764252 Developmental response of four species of Trichogramma (Hym.: Trichogrammatidae) to heat shocks [Elektronische Daten] [B. Ramesh, P. Baskaran] Effet de chocs de température sur le développement de 4 espèces de Trichogramma (Hym.: Trichogrammatidae) In India, species ofTrichogramma oophagous parasitoids against several lepidopteran pests have gained importance in the last few years. However, the performance of these parasitoids under certain climatic conditions seems erratic. High temperature prevailing in the sub-continent is suspected to have varying influence on performance of different species ofTrichogramma. To understand the effect of high temperature regimes we applied heat shocks (35°, 40° and 45°C) for 6 h to all developmental stages of four species ofTrichogramma namelyT. chilonis Ishii,T. brasiliensis Ashmead,T. pretiosum Riley andT. japonicum Ashmead. Based on two categories, "A”: to parasitized host eggs heat shock given for 6 h on the day specified in subscript with A1, A2, A3, A4, A5, A6 and A7 and "B”: to parasitized host eggs heat shock given for 6h from day specified in the subscript with B (B3, B4, B5 and B6) onwards till the adult emergence. The results showed that single day heat shock (A series) at 35°C had minimum effect on the developmental biology, adult biofeatures and in the progeny ofThichogramma. In B series the shock from third day onwards till adult emergence seemed to be damaging while the rest were safer. However, 40°C proved highly deleterious toTrichogramma in both A and B series of all species, exceptT chilonis which withstood heat to some extent Lavoisier Abonnements, 1996 parasitoid nationallicence biological control nationallicence heat shock nationallicence Ramesh B. Department of Entomology, Faculty of Agriculture, Annamalai University, 608 002, Tamil Nadu, India aut Baskaran P. Department of Entomology, Faculty of Agriculture, Annamalai University, 608 002, Tamil Nadu, India aut Entomophaga Springer Netherlands 41/2(1996-06-01), 267-277 0013-8959 41:2<267 1996 41 10526 https://doi.org/10.1007/BF02764252 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02764252 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ramesh B. Department of Entomology, Faculty of Agriculture, Annamalai University, 608 002, Tamil Nadu, India aut NATIONALLICENCE 700 1- Baskaran P. Department of Entomology, Faculty of Agriculture, Annamalai University, 608 002, Tamil Nadu, India aut NATIONALLICENCE 773 0- Entomophaga Springer Netherlands 41/2(1996-06-01), 267-277 0013-8959 41:2<267 1996 41 10526 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer