Abstract
The types, numbers and distributions of antennal sensilla were studied in both male and female adults of eight Acrididae species in Northeast China using scanning electron microscope (SEM). Totally, there were thirteen types of sensilla found on the antennae. They were identified as trichoid sensilla (I, II), chaetic sensilla (I, II), basiconic sensilla (I, II, III, IV, V), cavity sensilla, coeloconic sensilla, boehm's bristles and paddle-shaped sensilla. The types of antennal sensilla in each Acrididae species ranged from nine to twelve. Each of the species had the same types of antennal sensilla in male and female, and males had more abundant basiconic sensilla, chaetic sensilla, coeloconic sensilla, cavity sensilla than females. Acrida cinerca had the largest total numbers of sensilla, and Euthystria lueifemora had the fewest. Boehm's bristles had a concentration in the base of the pedicel. Paddle-shaped sensilla had a concentration in the base of the scape. There were significant differences in the distribution of the other eleven types of sensilla.References
Ameismeier, F. (1987) Ultrastructure of the chemosensitive basiconic single-walled wall pore sensilla on the antennae in adult sand embryonic stages of Locusta migratria L. (Insecta, Orthoptera). Cell and Tissue Research, 247, 605–612.
Abushama, F. T. (1968) Food-plant selection by Poekilocerus hieroglyphicus (Klug) (Acrididae: Pyrgomorphinae) and some of the receptors involved. Proceedings of the Royal Society of London, 43, 96–104.
Altner, H., Routil, C., & Loftus, R. (1981) The structure of bimodal chemo-, thermo-, and hygroreceptive sensilla on the antenna of Locusta migratoria. Cell and Tissue Research, 215, 289–308.
Bland, R. G. (1982) Morphology and distribution of sensilla on the antennae and mouthparts of Hypochlora alba (Orthoptera: Acrididae). Annals of Entomological Society America, 75, 272–283.
Bland, R. G. (1989) Antennal sensilla of Acrididae (Orthoptera) in relation to subfamily and food preference. Annals of Entomoogical Society of America, 82, 368–384.
Chapman, R. F. (1982) Chemoreception: The significance of receptor numbers. Advance in Insect Physiology, 16, 247–333.
Chen, H. H., Zhao, Y. X., & Kang, L. (2003) Antennal sensilla of grasshoppers (Orthoptera: Acrididae) in relation to food preferences and habits. Journal of Biosciences, 28, 743–752.
Greenwood, M. & Chapman, R. F. (1984) Differences in numbers of sensilla on the antennae of solitarious and gregarious Locusta migratoria L. (Orthoptera: Acrididae). International Journal of Insect Morphology and Embryology, 13, 295–301.
Kafka, W. A. (1970) Molekulare wechselwirkungen bei der Erregung einzeiner Riechzellen. Zeitschrift Fuer Vergleichende Physiologie, 70, 105–143.
Ocheing, S. A., Hallberg, E., & Hansson, B. S. (1998) Fine structure and distributions of antennal sensilla of the desert locust, Schistocerca gregaria (Orthoptera: Acrididae). Cell and Tissue Research, 291, 525–536.
Ochieng, S. A. & Hansson, B. S. (1996) Morphological types and physiological responses of antennal olfactory receptor neurons in the desert locust, Schistocerca gregaria (Orthoptera: Acrididae). The Proceeding of International Congress of Entomology, Florence, Italy, August 25-31, p 137.
Ren, B. Z. (2001) Grasshoppers and Locusts from Northeast. Jilin Science and Technology Press, Changchun, 173pp.
Schneider, D. (1964) Insect antennae. Annual Review Entomology, l9, 103–122.
Slifer, E. H., Prestage, J. J., & Beams, H. W. (1959) The chemoreceptors and other sense organs on the antennal flagellum of the grasshopper (Orthoptra: Acrididae). Journal of Morphology, 105, 145–191.
Zacharuk, R. Y. (1985) Antennae and sensilla. In: Kerkut, G. A. Gilbert, L. I. (Editors), Comparative Insect Physiology, Biochemistry and Pharmacology. Pergamon Press, Oxford, 6, 1–69.