02977nas a2200289   4500008004100000022001400041245010200055210006900157260007400226300001200300490000700312520202900319653001302348653001302361653001102374653000802385653001502393653001502408653003302423653002602456653001402482100001102496700001302507700002102520700001702541856012902558       2005                        eng d  a1386-614100aResponse of trichogramma chilonis to infochemicals: an SEM and electrophysiological investigation0 aResponse of trichogramma chilonis to infochemicals an SEM and el  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJUN  a429-4470 v503 a<p>The external morphology and peripheral olfactory responses of antennal chemoreceptors of Trichogramma chilonis Ishii (Hymenoptera:Trichogrammatidae) to host related stimuli were examined by SEM and EAG technique respectively. The antennae of male and female T. chilonis reveal strong sexual dimorphism in structure as well as in types, density and distribution of individual sensillar types. The female antennae are characterized by the presence of a single uniporous sensilla on the apical tip of the dome and numerous multiporous pitted sensilla. Sensilla common to both males and females include the multiporous plate sensilla, the peg sensilla and trichoid sensilla. Differences between males and females occur with respect to their EAG profiles to 22 chemicals commonly found in plants viz., hexanal, β-pinene, citronellal, terpinene, citronellol, phytol, caryophyllene, R-(+)-limonene, linalool, carvacrol, cis-3-hexen-1-ol, ethanol, α-pinene, trans-2-hexanal, α-phellandrene, amyl acetate, cineole, quinolene, S-(-)limonene, β-myrcene, carvone, terpineol; hexane leaf extracts of three host plants of Helicoverpa armigera (cotton, chickpea and pigeon pea) and hexane scale extracts of adult males and females of H. armigera. Individually, the largest peak amplitudes in females were obtained with citronellal, phytol, caryophyllene, R-(+)-limonene, linalool, carvacrol and citronellol while in males citronellol, caryophyllene, linalool, R-(+)-limonene and amyl acetate caused the highest response. Among the different chemical classes, the largest peak amplitudes in females were obtained with oxygenated monoterpenes, while in males, fatty acid derivatives caused the highest response. In both males and females, the hydrocarbon monoterpenes caused the least response. Thus, the wide spectrum response of Trichogramma chilonis, to a wide group of chemicals belonging to different chemical classes, though varying, nevertheless suggests that using plant information enhances its parasitization efficiency.</p>10aantennae10aChickpea10acotton10aEAG10aparasitoid10apigeon pea10ascanning electron microscopy10aTrichogramma chilonis10aVolatiles1 aSen, A1 aRaina, R1 aJoseph, Mary, P.1 aTungikar, VB  uhttps://library.ncl.res.in/content/response-trichogramma-chilonis-infochemicals-sem-and-electrophysiological-investigation-001807nas a2200157   4500008004100000245018400041210006900225260000800294300001200302490000700314520114700321100002001468700002001488700001101508856013001519       2017                        eng d00aOviposition and feeding behaviour of Xanthopimpla pedator (Fabricius) (Hymenoptera: Ichneumonidae) on tropical tasar silkworm, Antheraea mylitta (Drury) (Lepidoptera: Saturniidae)0 aOviposition and feeding behaviour of Xanthopimpla pedator Fabric  cSEP  a977-9830 v203 aXanthopimpla pedator is a major pupal endoparasitoid of tropical tasar silkworm, Antheraea mylitta. Extensive parasitism by X. pedator results in pupal (seed) mortality and broken cocoons, which declines the wild tasar silk production. A detailed account is given on the oviposition behaviour of the female X. pedator and feeding behaviour of its immature forms in the pupa of A. mylitta. Scanning electron microscopic (SEM) details of the ovipositor of X. pedator revealed the presence of various mechano- and chemoreceptors, which regulate host discrimination and oviposition behaviour. The oviposition and feeding behaviour of X. pedator were evaluated in the field as well as in situ conditions. In addition, the invasion caused by X. pedator on A. mylitta, are also described. Host-parasitoid interactions are also discussed and recorded frame-by-frame video-graphically. The parasitoid X. pedator, arrests development and eventually the survival of A. mylitta. We also assume that parasitism by X. pedator in tasar culture is due to the microhabitat and food content of pupal host A. mylitta, which favors the development of parasitoid.1 aGathalkar, G.B.1 aBarsagade, D.D.1 aSen, A  uhttps://library.ncl.res.in/content/oviposition-and-feeding-behaviour-xanthopimpla-pedator-fabricius-hymenoptera-ichneumonidae