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Sensilla on antennae, ovipositor and tarsi of the larval parasitoids, Cotesia sesamiae (Cameron 1906) and Cotesia flavipes Cameron 1891 (Hymenoptera: Braconidae): a comparative scanning electron microscopy study

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dc.contributor.author Obonyo, Meshack Amos Owino
dc.contributor.author Schulthess, Fritz
dc.contributor.author Chimtawi, Mathayo
dc.contributor.author Mascarel, Gérard
dc.contributor.author Ahuya, Peter O.
dc.contributor.author Le Ru, Bruno
dc.contributor.author Van den Berg, Johann (Johnnie)
dc.contributor.author Silvain, Jean-François
dc.contributor.author Calatayud, Paul-André
dc.date.accessioned 2012-08-31T13:43:08Z
dc.date.available 2012-08-31T13:43:08Z
dc.date.issued 2011
dc.identifier.citation Obonyo, M.A.O. et al. 2011. Sensilla on antennae, ovipositor and tarsi of the larval parasitoids, Cotesia sesamiae (Cameron 1906) and Cotesia flavipes Cameron 1891 (Hymenoptera: Braconidae): a comparative scanning electron microscopy study. Annales de la Société Entomologique de France, 47(1–2):119-127. [http://ann.sef.free.fr/] en_US
dc.identifier.uri http://hdl.handle.net/10394/7179
dc.description.abstract Two braconid parasitoids of cereal stemborers in eastern Africa, Cotesia sesamiae and Cotesia flavipes, have been shown to display a similar hierarchy of behavioural events during host recognition and acceptance. In order to understand the mechanisms underlying host recognition and acceptance, the morphology of antennal sensilla on the last antennomeres, on the ovipositor, and on the fifth tarsomere and pretarsus of the prothoracic legs tarsi were studied using scanning electron microscopy followed by selective silver nitrate staining. It appeared that female C. sesamiae and C. flavipes shared the same types and distribution of sensory receptors, which enable them to detect volatiles and contact chemical stimuli from their hosts. In both parasitoids, four types of sensilla were identified on the three terminal antennomeres: (i) non-porous sensilla trichodea likely to be involved in mechanoreception, (ii) uniporous sensilla chaetica with porous tips that have gustatory functions, (iii) multiporous sensilla placodea, which are likely to have olfactory function, and (iv) sensilla coeloconica known to have thermo-hygroreceptive function. The tarsi of both parasitoids possessed a few uniporous sensilla chaetica with porous tips, which may have gustatory functions. The distal end of the ovipositor bore numerous dome-shaped sensilla. However, there were no sensilla coeloconica or styloconica, known to have gustatory function in other parasitoid species, on the ovipositors of the two braconid wasps. en_US
dc.description.uri http://ann.sef.free.fr/
dc.language.iso en en_US
dc.publisher Société Entomologique de France en_US
dc.subject External morphology en_US
dc.subject antennae en_US
dc.subject ovipositor en_US
dc.subject tarsi en_US
dc.subject chemosensilla en_US
dc.subject host acceptance en_US
dc.title Sensilla on antennae, ovipositor and tarsi of the larval parasitoids, Cotesia sesamiae (Cameron 1906) and Cotesia flavipes Cameron 1891 (Hymenoptera: Braconidae): a comparative scanning electron microscopy study en_US
dc.type Article en_US


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