Summary
An electron microscopical study was made of the coeloconic and placoid sensilla on the antennae of the aphids Aphis pomi, Macrosiphum euphorbiae, Nasonovia ribis-nigri, and Pemphigus bursarius. Scanning electron microscopy revealed some variation in morphology which may be functionally important but is more likely to reflect the evolution of these species.
The placoid sensilla were shown by transmission electron microscopy to have the same basic structural pattern. Each group of two or three neurons is surrounded by two ensheathing cells. The ciliary regions of the dendrites pass through a vacuole into a cavity between an outer and an inner cuticle where they may be connected to the dendritic branches although such connections were not seen. Small pores (8 nm diameter) partially penetrate the cuticle implying that these sensilla have an olfactory function. They are suggested to be important in host selection by alate aphids.
The coeloconic sensilla are poreless pegs with nonsensory cuticular projections at their tips. The distal portions of their dendrites contain densely packed microtubules and the cellular arrangement of the sensilla is similar to that of the placoid sensilla. It is suggested that they may function as thermoreceptors.
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Boo, K.S., McIver, S.B.: Fine structure of sunken thick-walled pegs (sensilla ampullacea and coeloconica) on the antennae of mosquitoes. Can J. Zool. 53, 262–266 (1975)
Booth, C.O.: Photokinetic function of aphid antennae. Nature 197, 265–266 (1963)
Borden, J.H., Rose, A., Chorney, R.J.: Morphology of the elongate sensillum placodeum on the antennae of Aphidius smithi (Hymenoptera: Aphidiidae). Can. J. Zool. 56, 519–525 (1978)
Dunn, J.A.: Antennal sensilla of vegetable aphids. Ent. Exp. Appl. 24, 348–349 (1978)
Finck, H.: Epoxy resins in electron microscopy. J. Biophys. Biochem. Cytol. 7, 27–30 (1960)
Flögel, J.H.L.: Monographie der Johannisbeeren-Blattlaus, Aphis ribis L. 13. Voll entwickeltes geflügeltes agames Weibchen. Z. Wiss. Insektenbiol. 2, 49–63 (1905)
Jones, M.G.: The structure of the antenna of Aphis (Dorsalis) fabae Scopoli, and of Melanoxantherium salicis L. (Hemiptera), and some experiments on olfactory responses. Proc. R. Entomol. Soc. Lond. Ser. A. Gen. Entomol. 19, 13–22 (1944)
Krzywiec, D.: Neue, unbekannte Sinnesorgane der Blattläuse (Homoptera, Aphidoidea). Bull. Acad. Pol. Sci. Cl. II. 16, 765–771 (1968)
Lacher, V.: Elektrophysiologische Untersuchungen an einzelnen Rezeptoren für Geruch, Kohlendioxyd, Luftfeuchtigkeit und Temperatur auf den Antennen der Arbeitsbiene und der Drohne (Apis mellifica L.). Z. Vergl. Physiol. 48, 587–623 (1964)
Lacher, V., Schneider, D.: Elektrophysiologischer Nachweis der Riechfunktion von Porenplatten (Sensilla Placodea) auf den Antennen der Drohne und der Arbeitsbiene (Apis mellifica L.). Z. Vergl. Physiol. 47, 274–278 (1963)
McIver, S.B.: Fine structure of antennal sensilla coeloconica of culicine mosquitoes. Tissue Cell 5, 105–112 (1973)
McIver, S., Siemicki, R.: Fine structure of antennal sensilla coeloconica of adult Toxorhynchites brevipalpis (Diptera: Culicidae). J. Med. Entomol. 14, 673–676 (1978)
McLean, D.L., Kinsey, M.G.: Probing behavior of the pea aphid Acyrthosiphon pisum. III. Effect of temperature differences on certain probing activities. Ann. Entomol. Soc. Am. 61, 927–933 (1968)
Meinecke, C.-C.: Riechsensillen und Systematik der Lamellicornia (Insecta, Coleoptera). Zoomorphologie 82, 1–42 (1975)
Nault, L.R., Edwards, L.J., Styer, W.E.: Aphid alarm pheromones: secretion and reception. Environ. Entomol. 2, 101–105 (1973)
Pettersson, J.: An aphid sex attractant. I. Biological studies. Entomol. Scand. 1, 63–73 (1970)
Pettersson, J.: An aphid sex attractant. II. Histological, ethological and comparative studies. Entomol. Scand. 2, 81–93 (1971)
Pettersson, J.: Olfactory reactions of Brevicoryne brassicae (L.) (Hom.: Aph.). Swed. J. Agric. Res. 3, 95–103 (1973)
Shambaugh, G.F., Frazier, J.L., Castell, A.E.M., Coons, L.B.: Antennal sensilla of seventeen aphid species (Homoptera:Aphidinae). Int. J. Insect Morphol. Embryol. 7, 389–404 (1978)
Slifer, E.H., Sekhon, S.S.: The fine structure of the plate organs on the antenna of the honey bee, Apis mellifera Linnaeus. Exp. Cell Res. 19, 410–414 (1960)
Slifer, E.H., Sekhon, S.S.: Fine structure of the sense organs on the antennal flagellum of the honey bee, Apis mellifera Linnaeus. J. Morphol. 109, 351–382 (1961)
Slifer, E.H., Sekhon, S.S.: Some evidence for the continuity of ciliary fibrils and microtubules in the insect sensory dendrite. J. Cell Sci. 4, 527–540 (1969)
Slifer, E.H., Sekhon, S.S., Lees, A.D.: The sense organs on the antennal flagellum of aphids (Homoptera), with special reference to the plate organs. Q.J. Microsc. Sci. 105, 21–29 (1964)
Spurr, A.R.: A low-viscosity epoxy resin embedding medium for electron microscopy. J. Ultrastruct. Res. 26, 31–43 (1969)
Steinbrecht, R.A., Müller, B.: Fine structure of the antennal receptors of the bed bug, Cimex lectularius L. Tissue Cell 8, 615–636 (1976)
Wang, C.-H., Huber, F.: Morphological study of the aphid antennae of Aphis nerri Boyer (Homoptera: Aphididae). I. Flagellar sensilla. Bull. Inst. Zool. Acad. Sin. (Taipei) 15, 47–56 (1976)
Witlaczil, E.: Zur Anatomie der Aphiden. Arb. Zool. Inst. Wien 4, 397–441 (1882)
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The authors thank the Long Ashton Research Station, Bristol for use of the SEM facilities. A.K. Bromley gratefully acknowledges the tenure of a S.R.C. CASE Studentship and thanks Professor L.H. Finlayson for research facilities
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Bromley, A.K., Dunn, J.A. & Anderson, M. Ultrastructure of the antennal sensilla of aphids. Cell Tissue Res. 203, 427–442 (1979). https://doi.org/10.1007/BF00233272
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DOI: https://doi.org/10.1007/BF00233272