Abstract
Chemosensory information is crucial for most insects to feed and reproduce. Olfactory signals are mainly used at a distance, whereas gustatory stimuli play an important role when insects directly contact chemical substrates. In noctuid moths, although the antennae are the main olfactory organ, they also bear taste sensilla. These taste sensilla detect sugars and hence are involved in appetitive learning but could also play an important role in food evaluation by detecting salts and bitter substances. To investigate this, we measured the responses of individual taste sensilla on the antennae of Spodoptera littoralis to sugars and salts using tip recordings. We also traced the projections of their neuronal axons into the brain. In each sensillum, we found one or two neurons responding to sugars: one NaCl-responsive and one water-sensitive neuron. Responses of these neurons were dose-dependent and similar across different locations on the antenna. Responses were dependent on the sex for sucrose and on both sex and location for glucose and fructose. We did not observe a spatial map for the projections from specific regions of the antennae to the deutocerebrum or the tritocerebrum/suboesophageal ganglion complex. In accordance with physiological recordings, back-fills from individual sensilla revealed up to four axons, in most cases targeting different projection zones.
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References
Accolla R, Bathellier B, Petersen CCH, Carleton A (2007) Differential spatial representation of taste modalities in the rat gustatory cortex. J Neurosci 27:1396–1404
Altner H, Sass H, Altner I (1977) Relationship between structure and function of antennal chemoreceptive, hygroreceptive, and thermoreceptive sensilla in Periplaneta americana. Cell Tissue Res 176:389–405
Anderson P, Hallberg E (1990) Structure and distribution of tactile and bimodal taste tactile sensilla on the ovipositor, tarsi and antennae of the flour moth, Ephestia kuehniella (Zeller) (Lepidoptera, Pyralidae). Int J Insect Morphol Embryol 19:13–23
Barrozo RB, Couton L, Lazzari CR, Insausti TC, Minoli SA, Fresquet N, Rospars JP, Anton S (2009) Arthropod Struct Dev 38:101–110
Calas D, Berthier A, Marion-Poll F (2007) Do European corn borer females detect and avoid laying eggs in the presence of 20-Hydroxyecdysone? J Chem Ecol 33:1393–1404
Camazine SM, Hildebrand JG (1979) Central projections of antennal sensory neurons in mature and developing Manduca sexta. Soc Neurosci Abstr 5:155
Cameron P, Hiroi M, Ngai J, Scott K (2010) The molecular basis for water taste in Drosophila. Nature 465:91–95
Chaika SY, Sinitsina EE (1997) Antennal sensory organs of the flour moth Ephestia kuehniella Zell. (Lepidoptera: Pyralidae). Moscow Univ Biol Sci Bull 52:29–35
Chapman RF (1982) Chemoreception: the significance of receptor numbers. Adv Insect Physiol 16:247–333
Chapman RF (2003) Contact chemoreception in feeding by phytophagous insects. Annu Rev Entomol 48:455–484
Cornford ME, Rowley WA, Klun JA (1973) Scanning electron-microscopy of antennal sensilla of European corn borer, Ostrinia nubilalis Lepidoptera-Pyralidae. Ann Entomol Soc Am 66:1079–1088
Cuperus PL (1985) Ultrastructure of antennal sense organs of small ermine moths, Yponomeuta spp (Lepidoptera, Yponomeutidae). Int J Insect Morphol Embryol 14:179–191
Dahanukar A, Hallem EA, Carlson JR (2005) Insect chemoreception. Curr Opin Neurobiol 15:423–430
Dethier VG (1976) The hungry fly: a physiological study of the behavior associated with feeding. Harvard University Press, Cambridge
Edgecomb RS, Murdock LL (1992) Central projections of axons from taste hairs n the labellum and tarsi of the blowfly, Phormia regina Meigen. J Comp Neurol 315:431–444
Evans DR, Mellon D (1962) Electrophysiological studies of a water receptor associated with taste sensilla of the blowfly. J Gen Physiol 45:487–500
Fan RJ, Anderson P, Hansson BS (1997) Behavioural analysis of olfactory conditioning in the moth Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae). J Exp Biol 200:2969–2976
Fujishiro N, Kijima H, Morita H (1984) Impulse frequency and action potential amplitude in the labellar chemosensory neurones of Drosophila melanogaster. J Insect Physiol 30:317–325
Galizia CG, Menzel R (2001) The role of glomeruli in the neural representation of odours: results from optical recording studies. J Insect Physiol 47:115–130
Grant GG, Zhao B, Langevin D (2000) Oviposition response of spruce budworm (Lepidoptera: Tortricidae) to aliphatic carboxylic acids. Environ Entomol 29:164–170
Hansson BS, Anton S (2000) Function and morphology of the antennal lobe: new developments. Annu Rev Entomol 45:203–231
Hartlieb E, Anderson P, Hansson BS (1999) Appetitive learning of odours with different behavioural meaning in moths. Physiol Behav 67:671–677
Haupt SS (2007) Central gustatory projections and side-specificity of operant antennal muscle conditioning in the honeybee. J Comp Physiol A 193:523–535
Heisenberg M (2003) Mushroom body memoir: from maps to models. Nature Rev Neurosci 4:266–275
Hildebrand JG, Shepherd GM (1997) Mechanisms of olfactory discrimination: converging evidence for common principles across phyla. Annu Rev Neurosci 20:595–631
Hiroi M, Marion-Poll F, Tanimura T (2002) Differentiated response to sugars among labellar chemosensilla in Drosophila. Zoolog Sci 19:1009–1018
Hiroi M, Meunier N, Marion-Poll F, Tanimura T (2004) Two antagonistic gustatory receptor neurons responding to sweet-salty and bitter taste in Drosophila. J Neurobiol 61:333–342
Hodgson ES, Lettvin JY, Roeder KD (1955) Physiology of a primary chemoreceptor unit. Science 122:417–418
Homberg U, Christensen TA, Hildebrand JG (1989) Structure and function of the deutocerebrum in insects. Annu Rev Entomol 34:477–501
Inoshita T, Tanimura T (2006) Cellular identification of water gustatory receptor neurons and their central projection pattern in Drosophila. Proc Natl Acad Sci USA 103:1094–1099
Jørgensen K, Kvello P, Almaas TJ, Mustaparta H (2006) Two closely located areas in the suboesophageal ganglion and the tritocerebrum receive projections of gustatory receptor neurons located on the antennae and the proboscis in the moth Heliothis virescens. J Comp Neurol 496:121–134
Jørgensen K, Almaas TJ, Marion-Poll F, Mustaparta H (2007) Electrophysiological characterization of responses from gustatory receptor neurons of sensilla chaetica in the moth Heliothis virescens. Chem Senses 32:863–879
Kent KS, Hildebrand JG (1987) Cephalic sensory pathways in the central nervous system of larval Manduca sexta (Lepidoptera: Sphingidae). Philos Trans R Soc London B Biol Sci 315:1–36
Kloppenburg P (1995) Anatomy of the antennal motoneurons in the brain of the honeybee (Apis mellifera). J Comp Neurol 363:333–343
Kloppenburg P, Camazine SM, Sun XJ, Randolph P, Hildebrand JG (1997) Organization of the antennal motor system in the sphinx moth Manduca sexta. Cell Tissue Res 287:425–433
Kvello P, Almaas TJ, Mustaparta H (2006) A confined taste area in a lepidopteran brain. Arthrop Struct Dev 35:35–45
Kvello P, Jørgensen K, Mustaparta H (2010) Central gustatory neurons integrate taste quality information from four appendages in the moth Heliothis virescens. J Neurophysiol 103:2965–2981
Lacaille F, Hiroi M, Twele R, Inoshita T, Umemoto D, Maniere G, Marion-Poll F, Ozaki M, Francke W, Cobb M et al (2007) An inhibitory sex pheromone tastes bitter for Drosophila males. PLoS One 2:e661
Liscia A, Majone R, Solari P, Barbarossa IT, Crnjar R (1998) Sugar response differences related to sensillum type and location on the labella of Protophormia terraenovae: a contribution to spatial representation of the stimulus. J Insect Physiol 44:471–481
Maes FW, Den Otter CJ (1976) Relationship between taste cell responses and arrangement of labellar taste setae in the blowfly Calliphora vicina. J Insect Physiol 22:377–384
Marella S, Fischler W, Kong P, Asgarian S, Reukhert E, Scott K (2006) Imaging taste responses in the fly brain reveals a functional map of taste category and behavior. Neuron 49:285–295
Marion-Poll F (1996) Display and analysis of electrophysiological data under MS-Windows. Entomol Exp Appl 80:116–119
Marion-Poll F, Van der Pers JNC (1996) Un-filtered recordings from insect taste sensilla. Entomol Exp Appl 80:113–115
Masek P, Scott K (2010) Limited taste discrimination in Drosophila. Proc Natl Acad Sci USA 107:14833–14838
Menzel R, Muller U (1996) Learning and memory in honeybees: from behavior to neural substrates. Annu Rev Neurosci 19:379–404
Merivee E, Renou M, Mänd M, Luik A, Heidemaa M, Ploomi A (2004) Electrophysiological responses to salts from antennal chaetoid taste sensilla of the ground beetle Pterostichus aethiops. J Insect Physiol 50:1001–1013
Meunier N, Ferveur JF, Marion-Poll F (2000) Sex-specific non-pheromonal taste receptors in Drosophila. Curr Biol 10:1583–1586
Meunier N, Marion-Poll F, Lansky P, Rospars JP (2003a) Estimation of the individual firing frequencies of two neurons recorded with a single electrode. Chem Senses 28:671–679
Meunier N, Marion-Poll F, Rospars JP, Tanimura T (2003b) Peripheral coding of bitter taste in Drosophila. J Neurobiol 56:139–152
Mitchell BK, Itagaki H (1992) Interneurons of the subesophageal ganglion of Sarcophaga bullata responding to gustatory and mechanosensory stimuli. J Comp Physiol A 171:213–230
Mitchell BK, Itagaki H, Rivet MP (1999) Peripheral and central structures involved in insect gustation. Microsc Res Tech 47:401–415
Müller C, Riederer M (2005) Plant surface properties in chemical ecology. J Chem Ecol 31:2621–2651
Murphey RK, Possidente D, Pollack G, Merritt DJ (1989) Modality-specific axonal projections in the CNS of the flies Phormia and Drosophila. J Comp Neurol 290:185–200
Newland PL (1999) Processing of gustatory information by spiking local interneurons in the locust. J Neurophysiol 82:3149–3159
Newland PL, Rogers SM, Gaaboub I, Matheson T (2000) Palrallel somatotopic maps of gustatory and mechanosensory neurons in the central nervous system of an insect. J Comp Neurol 425:82–96
Nishino H, Nishikawa M, Yokohari F, Mizunami M (2005) Dual, multilayered somatosensory maps formed by antennal tactile and contact chemosensory afferents in an insect brain. J Comp Neurol 493:291–308
Poitout S, Bues R (1974) Linoleic acid requirement of Lepidoptera reared in artificial medium, Noctuidae, Quadrifinae and Plusiinae: Chrysodeixis chalcites Esp., Autographa gamma L., Macdunnoughia confusa Stph., Trichoplusia ni Hbn. Ann Nutr Aliment 28:173–187
Powell G, Maniar SP, Pickett JA, Hardie J (1999) Aphid responses to non-host epicuticular lipids. Entomol Exp Appl 91:115–123
Rees CJC (1970) The primary process of reception in the type 3 (‘water’) receptor cell of the fly, Phormia terranovae. Proc R Soc Lond B 174:469–490
Renwick JA (1989) Chemical ecology of oviposition in phytophagous insects. Experientia 45:223–228
Rogers SM, Simpson SJ (1999) Chemo-discriminatory neurones in the sub-oesophageal ganglion of Locusta migratoria. Entomol Exp Appl 91:19–28
Rospars JP (1983) Invariance and sex-specific variations of the glomerular organization in the antennal lobes of a moth, Mamestra brassicae, and a butterfly, Pieris brassicae. J Comp Neurol 220:80–96
Rospars JP (1988) Structure and development of the insect antennodeutocerebral system. Int J Insect Morphol Embryol 17:243–294
Schoonhoven LM, van Loon JJA (2002) An inventory of taste in caterpillars: each species its own key. Acta Zool Acad Sci Hung 48:215–263
Singh RN (1997) Neurobiology of the gustatory systems of Drosophila and some terrestrial insects. Microsc Res Tech 39:547–563
Skiri HT, Ro H, Berg BG, Mustaparta H (2005) Consistent organization of glomeruli in the antennal lobes of related species of heliothine moths. J Comp Neurol 491:367–380
Steinbauer MJ, Schiestl FP, Davies NW (2004) Monoterpenes and epicuticular waxes help female autumn gum moth differentiate between waxy and glossy Eucalyptus and leaves of different ages. J Chem Ecol 30:1117–1142
Stocker RF (1994) The organization of the chemosensory system in Drosophila melanogaster: a review. Cell Tissue Res 275:3–26
Thorne N, Chromey C, Bray S, Amrein H (2004) Taste perception and coding in Drosophila. Curr Biol 14:1065–1079
Udayagiri S, Mason CE (1997) Epicuticular wax chemicals in Zea mays influence oviposition in Ostrinia nubilalis. J Chem Ecol 23:1675–1687
Vosshall LB, Wong AM, Axel R (2000) An olfactory sensory map in the fly brain. Cell 102:147–159
Wang Z, Singhvi A, Kong P, Scott K (2004) Taste representations in the Drosophila brain. Cell 117:981–991
Wieczorek H, Köppl R (1978) Effect of sugars on the labellar water receptor of the fly. J Comp Physiol A 126:131–136
Acknowledgments
This work was supported by a doctoral fellowship to AP from the doctoral school ABIES and the bilateral exchange program Aurora (EGIDE). Romina Barrozo and Sebastian Minoli are acknowledged for help with the figures and Dominique Van Oort for help with the scanning electron microscopy. We thank Delphine Calas-List for helpful comments on the manuscript.
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F. Marion-Poll and S. Anton share senior authorship.
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Popescu, A., Couton, L., Almaas, TJ. et al. Function and central projections of gustatory receptor neurons on the antenna of the noctuid moth Spodoptera littoralis . J Comp Physiol A 199, 403–416 (2013). https://doi.org/10.1007/s00359-013-0803-0
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DOI: https://doi.org/10.1007/s00359-013-0803-0