Colleterial glands of Sesamia nonagrioides as a source of the host-recognition kairomone for the egg parasitoid Telenomus busseolae |
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Authors: | FEDERICA DE SANTIS ERIC CONTI ROBERTO ROMANI GIANANDREA SALERNO FRANCESCO PARILLO FERDINANDO BIN |
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Institution: | Dipartimento di Scienze Agrarie e Ambientali, Universitàdi Perugia, Italy;and Dipartimento di Scienze Veterinarie, Facoltàdi Medicina Veterinaria, Universitàdi Camerino, Matelica, Italy. |
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Abstract: | Abstract. The maize stemborer Sesamia nonagrioides glues its egg masses under the leaf sheaths or ear bracts using colleterial gland secretion. In spite of such concealed oviposition sites, these eggs are parasitized by Telenomus busseolae. The colleterial glands of S. nonagrioides are investigated as a possible source of the host-recognition kairomone for T. busseolae . This secretion, applied on glass beads, elicits intense antennal drumming and oviposition probing behaviour in the parasitoid. Through an histochemical study, neutral and acid glycoconjugates are identified as components of the secretion. Finally, using ultrastructural techniques, the colleterial glands are described and classified as comprising class 3 secretory cells. |
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Keywords: | Class 3 secretory cells gland ultrastructure glycoconjugates oviposition behaviour secretion histochemistry semiochemicals |
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