RogersMathesonDesplandEtAl2003

Reference

Rogers, S.M., Matheson, T., Despland, E., Dodgson, T., Burrows, M. and Simpson, S.J. (2003) Mechanosensory-induced behavioural gregarization in the desert locust Schistocerca gregaria. Journal of Experimental Biology, 206(22):3991-4002.

Abstract

Desert locusts show an extreme form of phenotypic plasticity, changing between a cryptic solitarious phase and a swarming gregarious phase that differ in many aspects of behaviour, physiology and appearance. Solitarious locusts show rapid behavioural phase change in response to tactile stimulation directed to the hind femora. Repeatedly touching as little as one quarter of the anterior (outer) surface area of a hind femur produced full behavioural gregarization within 4 h. Solitarious locusts have approximately 30% more mechanosensory trichoid sensilla on the hind femora than do gregarious locusts but have similar or fewer numbers of sensilla elsewhere on the legs. Tactile stimulation of a hind femur in solitarious locusts that had been restrained so that they could not move their legs failed to induce any behavioural gregarization. Patterned electrical stimulation of metathoracic nerve 5, which innervates the hind leg, however, produced full gregarization in restrained locusts. Our data show for the first time that the gregarizing signal combines both exteroceptive and proprioceptive components, which travel in both nerves 5B1 and 5B2, and provides us with a powerful experimental method with which to elicit and study neuronal plasticity in this system. Acetic acid odour, a strong chemosensory stimulus that activates the same local processing pathways as exteroceptive stimuli, failed to elicit behavioural gregarization, suggesting an early segregation in the central nervous system of the mechanosensory signals that leads to gregarization.

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@ARTICLE { RogersMathesonDesplandEtAl2003,
    AUTHOR = { Rogers, S.M. and Matheson, T. and Despland, E. and Dodgson, T. and Burrows, M. and Simpson, S.J. },
    TITLE = { Mechanosensory-induced behavioural gregarization in the desert locust Schistocerca gregaria },
    JOURNAL = { Journal of Experimental Biology },
    YEAR = { 2003 },
    VOLUME = { 206 },
    PAGES = { 3991-4002 },
    NUMBER = { 22 },
    NOTE = { 00220949 (ISSN) Cited By (since 1996): 7 Export Date: 27 April 2007 Source: Scopus CODEN: JEBIA Language of Original Document: English Correspondence Address: Rogers, S.M.; Department of Zoology; University of Cambridge; Downing St Cambridge CB2 3EJ, United Kingdom; email: smr34@cam.ac.uk Chemicals/CAS: acetic acid, 127-08-2, 127-09-3, 64-19-7, 71-50-1; Acetic Acid, 64-19-7 References: Applebaum, S.W., Heifetz, Y., Density-dependent physiological phase in insects (1999) Annu. Rev. Entomol., 44, pp. 317-341; Ba?ssler, U., Sense organs in the femur of the stick insect and their relevance to the control of position of the femur-tibia joint (1977) J. Comp. Physiol., 121, pp. 99-113; Bouai?chi, A., Roessingh, P., Simpson, S.J., An analysis of the behavioural effects of crowding and re-isolation on solitary-reared adult desert locusts (Schistocerca gregaria) and their offspring (1995) Physiol. Entomol., 20, pp. 199-208; Bra?unig, P., The peripheral and central organization of the locust coxotrochanteral joint (1982) J. Neurobiol., 13, pp. 413-433; Bra?unig, P., Hustert, R., Pflu?ger, H.J., Distribution and specific central projections of mechanoreceptors in the thorax and proximal leg joints of locusts. 1. Morphology, location and innervation of internal proprioceptors of pro- and metathorax and their central projections (1981) Cell Tissue Res., 216, pp. 57-77; Bra?unig, P., Hustert, R., Actions and interactions of proprioceptors of the locust hind leg coxo-trochanteral joint. I. Afferent responses in relation to joint position and movement (1985) J. Comp. Physiol. A, 157, pp. 73-82; Burrows, M., Newland, P.L., Convergence of mechanosensory afferents from different classes of exteroceptors onto spiking local interneurones in the locust (1994) J. Neurosci., 14, pp. 3341-3350; Dingle, H., (1995) Migration: The Biology of Life on the Move, , Oxford: Oxford University Press; Dirsh, V.M., Morphometrical studies on phase in the desert locust (Schistocerca gregaria Forska?l) (1953) Anti-Locust Bull., 16, pp. 1-34; Ellis, P.E., Changes in the social aggregation of locust hoppers with changes in rearing conditions (1963) Anim. Behav., 11, pp. 152-160; Gillett, S.D., Social determinants of aggregation behaviour in adults of the desert locust (1973) Anim. Behav., 21, pp. 599-606; Greenwood, M., Chapman, R.F., 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.F., Simpson, S.J., The influence of mechanical, visual and contact chemosensory stimulation on the behavioural phase state of solitarious locusts Schistocerca gregaria (2000) J. Insect Physiol., 46, pp. 1295-1301; Heitler, W.J., Burrows, M., The locust jump. II. Neural circuits of the motor pattern (1977) J. Exp. Biol., 66, pp. 221-241; Hustert, R., Pflu?ger, H.J., Bra?unig, P., Distribution and specific central projections of mechanoreceptors in the thorax and proximal leg joints of locusts. III. The external mechanoreceptors: The campaniform sensilla (1981) Cell Tissue Res., 216, pp. 97-111; Laurent, G., Burrows, M., A population of ascending intersegmental interneurones in the locust with mechanosensory inputs from a hind leg (1988) J. Comp. Neurol., 275, pp. 1-12; Laurent, G., Burrows, M., Direct excitation of non-spiking local interneurones by exteroceptors underlies tactile reflexes in the locust (1988) J. Comp. Physiol. A, 162, pp. 563-572; Laurent, G., Hustert, R., Motor neuronal receptive fields delimit patterns of motor activity during locomotion of the locust (1988) J. Neurosci., 8, pp. 4349-4366; Matheson, T., Field, L.H., An elaborate tension receptor system highlights sensory complexity in the hind leg of the locust (1995) J. Exp. Biol., 198, pp. 1673-1689; Mu?cke, A., Innervation pattern and sensory supply of the midleg of Schistocerca gregaria (Insects, Orthopteroidea) (1991) Zoomorphology, 110, pp. 175-187; Newland, P.L., Morphology of a population of mechanosensory ascending interneurones in the metathoracic ganglion of the locust (1990) J. Comp. Neurol., 299, pp. 242-260; Newland, P.L., Physiological properties of afferents from tactile hairs on the hindlegs of the locust (1991) J. Exp. Biol., 155, pp. 487-503; Newland, P.L., Avoidance reflexes mediated by contact chemoreceptors on the legs of locusts (1998) J. Comp. Physiol. A, 183, pp. 313-324; Newland, P.L., Processing of gustatory information by spiking local interneurons in the locust (1999) J. Neurophysiol., 82, pp. 3149-3159; Newland, P.L., Burrows, M., Processing of mechanosensory information from gustatory receptors on a hind leg of the locust (1994) J. Comp. Physiol. A, 174, pp. 399-410; Newland, P.L., Rogers, S.M., Gaaboub, I., Matheson, T., Parallel somatotopic maps of gustatory and mechanosensory neurons in the central nervous system of an insect (2000) J. Comp. Neurol., 425, pp. 82-96; Pener, M.P., Locust phase polymorphism and its endocrine relations (1991) Adv. Insect Physiol., 23, pp. 1-79; Roessingh, P., Bouai?chi, A., Simpson, S.J., Effects of sensory stimuli on the behavioural phase state of the desert locust, Schistocerca gregaria (1998) J. Insect. Physiol., 44, pp. 883-893; Roessingh, P., Simpson, S.J., James, S., Analysis of phase-related changes in the behaviour of desert locust nymphs (1993) Proc. R. Soc. B, 252, pp. 43-49; Roessingh, P., Simpson, S.J., The time-course of behavioural phase change in nymphs in the desert locust, Schistocerca gregaria (1994) Physiol Entomol., 19, pp. 191-197; Rogers, S.M., Newland, P.L., Gustatory processing in thoracic local circuits of locusts (2002) J. Neurosci., 22, pp. 8324-8333; Siegler, M.V.S., Burrows, M., Receptive fields of motor neurones underlying local tactile reflexes in the locust (1986) J. Neurosci., 6, pp. 507-513; Simpson, S.J., Despland, E., Ha?gele, B.F., Dodgson, T., Gregarious behavior in desert locusts is evoked by touching their back legs (2001) Proc. Natl. Acad. Sci. USA, 98, pp. 3895-3897; Simpson, S.J., McCaffery, A.R., Ha?gele, B.F., A behavioural analysis of phase change in the desert locust (1999) Biol. Rev., 74, pp. 461-480; Usherwood, P.N.R., Runion, H.I., Campbell, J.I., Structure and physiology of a chordotonal organ in the locust leg (1968) J. Exp. Biol., 48, pp. 305-323; Uvarov, B., (1966) Grasshoppers and Locusts, 1. , Cambridge: Cambridge University Press; Williamson, R., Burns, M.D., Multiterminal receptors in the locust mesothoracic leg (1978) J. Insect Physiol., 24, pp. 661-666. },
    ABSTRACT = { Desert locusts show an extreme form of phenotypic plasticity, changing between a cryptic solitarious phase and a swarming gregarious phase that differ in many aspects of behaviour, physiology and appearance. Solitarious locusts show rapid behavioural phase change in response to tactile stimulation directed to the hind femora. Repeatedly touching as little as one quarter of the anterior (outer) surface area of a hind femur produced full behavioural gregarization within 4 h. Solitarious locusts have approximately 30% more mechanosensory trichoid sensilla on the hind femora than do gregarious locusts but have similar or fewer numbers of sensilla elsewhere on the legs. Tactile stimulation of a hind femur in solitarious locusts that had been restrained so that they could not move their legs failed to induce any behavioural gregarization. Patterned electrical stimulation of metathoracic nerve 5, which innervates the hind leg, however, produced full gregarization in restrained locusts. Our data show for the first time that the gregarizing signal combines both exteroceptive and proprioceptive components, which travel in both nerves 5B1 and 5B2, and provides us with a powerful experimental method with which to elicit and study neuronal plasticity in this system. Acetic acid odour, a strong chemosensory stimulus that activates the same local processing pathways as exteroceptive stimuli, failed to elicit behavioural gregarization, suggesting an early segregation in the central nervous system of the mechanosensory signals that leads to gregarization. },
    KEYWORDS = { Exteroception Grasshopper Gregarious Phase transition Phenotypic plasticity Proprioception Schistocerca gregaria Solitarious Solitary social behavior Social Behavior },
    OWNER = { racinep },
    TIMESTAMP = { 2007.09.07 },
}

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