Despland2001

Reference

Despland, E. (2001) Role of olfactory and visual cues in the attraction/repulsion responses to conspecifics by gregarious and solitarious desert locusts. Journal of Insect Behavior, 14(1):35-46.

Abstract

Desert locusts [Schistocerca gregaria Forska?l (Orthoptera, Acrididae)] change phase in response to population density: solitarious insects avoid one another, but when crowded they change to the gregarious phase and aggregate. The attraction/repulsion responses of gregarious and solitarious locusts maintain phase differences in locust populations. Despite considerable research, the cues for aggregation are poorly understood; moreover, the repulsion response of solitarious locusts has not previously been investigated. This study analyzes the role of visual and olfactory stimuli in triggering these different responses to conspecifics. Isolation-reared insects were repelled by both olfactory and visual stimuli from other locusts. Crowd-reared insects were attracted by the combination of olfactory and visual cues. In addition, olfactory stimuli affected other behaviors in both phases, and behavioral differences between isolation-and crowd-reared locusts were clear even in the absence of conspecifics. The sensory and neurological mechanisms underlying these responses are not well understood and will form the basis for neurobiological investigations of locust phase.

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@ARTICLE { Despland2001,
    AUTHOR = { Despland, E. },
    TITLE = { Role of olfactory and visual cues in the attraction/repulsion responses to conspecifics by gregarious and solitarious desert locusts },
    JOURNAL = { Journal of Insect Behavior },
    YEAR = { 2001 },
    VOLUME = { 14 },
    PAGES = { 35-46 },
    NUMBER = { 1 },
    NOTE = { 08927553 (ISSN) Cited By (since 1996): 4 Export Date: 27 April 2007 Source: Scopus CODEN: JIBEE doi: 10.1023/A:1007845528500 Language of Original Document: English Correspondence Address: Despland, E.; Zoology Department; Oxford University Oxford OX1 3PS, United Kingdom; email: emma.despland@zoo.ox.ac.uk References: Bouai?chi, A., Simpson, S., Roessingh, P., The influence of environmental microstructure on the behavioural phase state and distribution of the desert locust Schistocerca gregaria (1996) Physiol. Entomol., 21, pp. 247-256; Burrows, M., (1996) Neurobiology of the Insect Brain, , Oxford University Press, Oxford; Byers, J., Pheromones and chemical ecology of locusts (1991) Biol. Rev., 66, pp. 347-378; Despland, E., (1999) Small-Scale Environmental Factors and Desert Locust Behaviour and Phase State, , D.phil. thesis, Department of Zoology, Oxford University, Oxford; Despland, E., Simpson, S., Small-scale vegetation patterns in the parental environment influence the phase state of hatchlings of the desert locust (2000) Physiol. Entomol., 25, pp. 1-9; Ellis, P., Learning and social aggregation in locust hoppers (1959) Anim. Behav., 7 (1-2), pp. 91-106; Ellis, P., The behaviour of locusts in relation to phases and species (1962) Physiologie, Comportement et Ecologie des Acridiens en Rapport avec la Phase, , CNRS, Paris; Ellis, P., The influence of some environmental factors on learning and aggregation in locust hoppers (1963) Anim. Behav., 11 (1), pp. 142-151; Ellis, P., Pearce, A., Innate and learned behaviour patterns that lead to group formation in locust hoppers (1962) Anim. Behav., 10 (3-4), pp. 305-318; Fisher, R., (1954) Statistical Methods for Research Workers, 12th ed., , Oliver \& Boyd, Edinburgh, UK; Fuzeau-Braesch, S., Genin, E., Jullien, R., Knowles, E., Papin, C., Composition and role of volatile substances in atmosphere surrounding two gregarious locusts, Locusta migratoria and Schistocerca gregaria (1988) J. Chem. Ecol., 14, pp. 1023-1033; Greenwood, M., Chapman, R., Differences in numbers of sensilla on the antennae of solitarious and gregarious Locusta migratoria L. (Orthoptera: Acrididae) (1984) Int. J. Insect Morphol. Embryol., 13, pp. 295-301; Ha?gele, B., Simpson, S., The influence of mechanical, visual and contact chemical stimulation on the behavioural phase state of solitarious desert locusts Schistocerca gregaria (2000) J. Insect Physiol., 46, pp. 1295-1301; Hassanali, A., Torto, B., Grasshoppers and locusts (1999) Pheromones of Non-lepidopteran Insects Associated with Agricultural Plants, , Hardy, J., and Minks, A. (eds.), CABI, London; Hedges, L., Olkin, I., (1985) Statistical Methods in Meta-Analysis, , Academic Press, Boston; Heifetz, Y., Voet, H., Applebaum, S.W., Factors affecting behavioural phase transition in the desert locust Schistocerca gregaria (Forska?l) (Orthoptera: Acrididae) (1996) J. Chem. Ecol., 22, pp. 1717-1734; Kirk, R., (1982) Experimental Design: Procedures for the Behavioural Sciences, 2nd ed., , Brooks/Cole, Pacific Grove, CA; Njagi, P., Torto, B., Obeng-Ofori, D., Hassanali, A., Phase-independent responses to phase-specific aggregation pheromone in adult desert locusts, Schistocerca gregaria (Orthoptera: Acrididae) (1996) Physiol. Entomol., 21, pp. 131-137; Obeng-Ofori, D., Torto, B., Hassanali, A., Evidence for mediation of two releaser pheromones in the aggregation behavior of the gregarious desert locust, Schistocerca gregaria (Forska?l) (Orthoptera: Acrididae) (1993) J. Chem. Ecol., 19 (8), pp. 1665-1676; Obeng-Ofori, D., Njagi, P., Torto, B., Hassanali, A., Amiani, H., Sex differentiation studies relating to releaser aggregation pheromones of the desert locust Schistocerca gregaria (1994) Entomol. Exp. Appl., 73, pp. 85-91; Obeng-Ofori, D., Torto, B., Njagi, P., Hassanali, A., Amiani, H., Fecal volatiles as part of the aggregation pheromone complex of the desert locust, Schistocerca gregaria (Forska?l) (Orthoptera: Acrididae) (1994) J. Chem. Ecol., 20 (8), pp. 2077-2086; Ochieng', S., Hansson, B., Responses of olfactory receptor neurones to behaviourally important odours in gregarious and solitarious desert locust, Schistocerca gregaria (1999) Physiol. Entomol., 24, pp. 28-36; Ochieng', S., Halberg, E., Hansson, B., Fine structure and distribution of antennal sensilla of the desert locust, Schistocerca gregaria (Forska?l) (Orthoptera: Acrididae) (1998) Cell Tissue Res., 291, pp. 525-536; Pener, M., Locust phase polymorphism and its endocrine relations (1991) Adv. Insect Physiol., 23, pp. 1-79; Pener, M., Yerushalmi, Y., The physiology of locust phase polymorphism: An update (1998) J. Insect Physiol., 44, pp. 365-377; Roessingh, P., Simpson, S., The time-course of behavioural phase change in nymphs of the desert locust, Schistocerca gregaria (1994) Physiol. Entomol., 19, pp. 191-197; Roessingh, P., Simpson, S., James, S., Analysis of phase-related changes in the behaviour of desert locust nymphs (1993) Proc. Roy. Soc. London Ser. B, 252, pp. 43-49; Roessingh, P., Bouai?chi, A., Simpson, S., Effects of sensory stimuli on the behavioural phase state of the desert locust, Schistocerca gregaria (1998) J. Insect Physiol., 44 (10), pp. 883-893; Simpson, S., McCaffery, A., Ha?gele, B., A behavioural analysis of phase change in the desert locust (1999) Biol. Rev., 74, pp. 461-480; Sokal, R., Rohlf, F., (1995) Biometry: The Principles and Practice of Statistics in Biological Research, 3rd ed., , W. H. Freeman, New York; Sword, G., Simpson, S., Is there an intraspecific role for density-dependent colour change in the desert locust? (2000) Anim. Behav., 59, pp. 861-870; Torto, B., Obeng-Ofori, D., Njagi, P., Hassanali, A., Amiani, H., Aggregation pheromone system of adult gregarious desert locust Schistocerca gregaria (Forska?l) (1994) J. Chem. Ecol., 20 (7), pp. 1749-1762; Uvarov, B., (1977) Grasshoppers and Locusts, 2. , COPR, London. },
    ABSTRACT = { Desert locusts [Schistocerca gregaria Forska?l (Orthoptera, Acrididae)] change phase in response to population density: solitarious insects avoid one another, but when crowded they change to the gregarious phase and aggregate. The attraction/repulsion responses of gregarious and solitarious locusts maintain phase differences in locust populations. Despite considerable research, the cues for aggregation are poorly understood; moreover, the repulsion response of solitarious locusts has not previously been investigated. This study analyzes the role of visual and olfactory stimuli in triggering these different responses to conspecifics. Isolation-reared insects were repelled by both olfactory and visual stimuli from other locusts. Crowd-reared insects were attracted by the combination of olfactory and visual cues. In addition, olfactory stimuli affected other behaviors in both phases, and behavioral differences between isolation-and crowd-reared locusts were clear even in the absence of conspecifics. The sensory and neurological mechanisms underlying these responses are not well understood and will form the basis for neurobiological investigations of locust phase. },
    KEYWORDS = { Aggregation stimuli Desert locust Gregarization Olfaction Phase state Schistocerca gregaria Solitarious Vision },
    OWNER = { racinep },
    TIMESTAMP = { 2007.09.07 },
}

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