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Artículo

The use of actometry and electronic nose devices to assess the locomotor activity of two species of Coccinellidae (Coleoptera)

Heit, Guillermo Eugenio; Messina, Valeria MarisaIcon ; Mareggiani, Graciela Silvia; Cohen, Rosa Graciela; Carrizo, Paola
Fecha de publicación: 07/2011
Editorial: Pontificia Universidad Católica Chile
Revista: Ciencia e Investigación Agraria
ISSN: 0304-5609
e-ISSN: 0718-1620
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Agricultura

Resumen

The effect of odor signals on the locomotor activity of Cycloneda sanguinea and Harmonia axyridis was evaluated using two different actometric devices. The purpose of the analysis was to differentiate between the responses elicited by direct contact with the substrates and the responses that occurred if the coccinellids were exposed only to volatiles and had no direct substrate contact. The odor profile of the environmental volatiles (semiochemicals) in the bioassays was analyzed using an electronic nose (Modular Sensor System Moses II). The treatments used included volatiles emitted by pepper leaves (healthy or infested with Myzus persicae), M. persicae molts and honeydew, and healthy leaves treated with an artificial inducer of the systemic acquired response to herbivory (AISAR). The results suggest that a specific stimulus linked to aphid-host interaction would trigger a distinctive locomotor activity pattern in H. axyridis, with or without any contact with the aphids or the host plant. In contrast, C. sanguinea was not able to differentiate between volatiles from infested or uninfected pepper leaves or to distinguish these volatiles from clean filter paper (control). If C. sanguinea was in contact with aphid-infested pepper leaves (regardless of the previous prey density), it moved slowly and scanned the area exhaustively; H. axyridis showed significantly reduced locomotor activity when it was in contact with aphid-infested pepper leaves or aphid molts and honeydew, all reliable signals of the presence of a food source. In both species, treatment with Actigard (AISAR: Acibenzolar-S-methyl) failed to evoke the behavioral response observed in the treatment with aphid-infested pepper plants. The study also demonstrated that the E-nose can differentiate among blends of volatiles released from cut healthy or aphid-infested pepper leaves.
Palabras clave: Coccinellidae , Electronic Nose , Acibenzolar-S-Methyl , Locomotor Activity
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/82033
URL: https://rcia.uc.cl/index.php/rcia/article/view/122
DOI: http://dx.doi.org/10.7764/rcia.v38i2.122
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Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Citación
Heit, Guillermo Eugenio; Messina, Valeria Marisa; Mareggiani, Graciela Silvia; Cohen, Rosa Graciela; Carrizo, Paola; The use of actometry and electronic nose devices to assess the locomotor activity of two species of Coccinellidae (Coleoptera); Pontificia Universidad Católica Chile; Ciencia e Investigación Agraria; 38; 2; 7-2011; 265-275
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