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Cohen Z, Crossley MS, Mitchell RF, Engsontia P, Chen YH, Schoville SD. Evolution of chemosensory genes in Colorado potato beetle, Leptinotarsa decemlineata. J Evol Biol 2024; 37:62-75. [PMID: 38285658 DOI: 10.1093/jeb/voad004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/05/2023] [Accepted: 11/01/2023] [Indexed: 01/31/2024]
Abstract
Associating with plant hosts is thought to have elevated the diversification of insect herbivores, which comprise the majority of global species diversity. In particular, there is considerable interest in understanding the genetic changes that allow host-plant shifts to occur in pest insects and in determining what aspects of functional genomic diversity impact host-plant breadth. Insect chemoreceptors play a central role in mediating insect-plant interactions, as they directly influence plant detection and sensory stimuli during feeding. Although chemosensory genes evolve rapidly, it is unclear how they evolve in response to host shifts and host specialization. We investigate whether selection at chemosensory genes is linked to host-plant expansion from the buffalo burr, Solanum rostratum, to potato, Solanum tuberosum, in the super-pest Colorado potato beetle (CPB), Leptinotarsa decemlineata (Coleoptera: Chrysomelidae). First, to refine our knowledge of CPB chemosensory genes, we developed novel gene expression data for the antennae and maxillary-labial palps. We then examine patterns of selection at these loci within CPB, as well as compare whether rates of selection vary with respect to 9 closely related, non-pest Leptinotarsa species that vary in diet breadth. We find that rates of positive selection on olfactory receptors are higher in host-plant generalists, and this signal is particularly strong in CPB. These results provide strong candidates for further research on the genetic basis of variation in insect chemosensory performance and novel targets for pest control of a notorious super-pest.
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Affiliation(s)
- Zachary Cohen
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, United States
| | - Michael S Crossley
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, United States
| | - Robert F Mitchell
- Department of Biology, University of Wisconsin-Oshkosh, Oshkosh, WI, United States
| | - Patamarerk Engsontia
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Yolanda H Chen
- Department of Plant and Soil Science, University of Vermont, Burlington, VT, United States
| | - Sean D Schoville
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, United States
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Edison A, Michelbach A, Sowade D, Kertzel H, Schmidt L, Schäfer M, Lysander M, Nauen R, Duchen P, Xu S. Evidence of active oviposition avoidance to systemically applied imidacloprid in the Colorado potato beetle. INSECT SCIENCE 2024. [PMID: 38282249 DOI: 10.1111/1744-7917.13319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 11/08/2023] [Accepted: 12/07/2023] [Indexed: 01/30/2024]
Abstract
Agricultural pests can develop behavioral resistance to insecticides by choosing to feed or oviposit on insecticide-free hosts. As young larvae have relatively low mobility, oviposition preferences from female adults may play a critical role in shaping the evolutionary trajectory of pest populations. While oviposition avoidance of insecticide-treated hosts was found in different agriculture pests, it remains unclear whether female adults actively choose to occupy insecticide-free hosts. To address this question, we investigated feeding and oviposition preferences between imidacloprid-treated and imidacloprid-free plants in the Colorado potato beetle, Leptinotarsa decemlineata Say, a major potato pest. We performed behavioral choice assays on two strains that differed in both fecundity and insecticide resistance. We found that one strain preferred to feed on the insecticide-free plants and that this preference is not innate. Meanwhile, the other strain chose plants for feeding and oviposition randomly. Further analyses of the moving patterns of the beetles suggested that the oviposition preference in the first strain is likely due to active learning.
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Affiliation(s)
- Alitha Edison
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Anja Michelbach
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Current address: Department of Cell and Tissue Dynamics, Münster, Germany
| | - Dominique Sowade
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
| | - Hanna Kertzel
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Luise Schmidt
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
| | - Martin Schäfer
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Maximillian Lysander
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Ralf Nauen
- Crop Science Division, Research and Development Department, Bayer AG, Monheim, Germany
| | - Pablo Duchen
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Shuqing Xu
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
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Cohen ZP, Brevik K, Chen YH, Hawthorne DJ, Weibel BD, Schoville SD. Elevated rates of positive selection drive the evolution of pestiferousness in the Colorado potato beetle (Leptinotarsa decemlineata, Say). Mol Ecol 2020; 30:237-254. [PMID: 33095936 DOI: 10.1111/mec.15703] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 09/28/2020] [Accepted: 10/15/2020] [Indexed: 12/16/2022]
Abstract
Contextualizing evolutionary history and identifying genomic features of an insect that might contribute to its pest status is important in developing early detection and control tactics. In order to understand the evolution of pestiferousness, which we define as the accumulation of traits that contribute to an insect population's success in an agroecosystem, we tested the importance of known genomic properties associated with rapid adaptation in the Colorado potato beetle (CPB), Leptinotarsa decemlineata Say. Within the leaf beetle genus Leptinotarsa, only CPB, and a few populations therein, has risen to pest status on cultivated nightshades, Solanum. Using whole genomes from ten closely related Leptinotarsa species native to the United States, we reconstructed a high-quality species tree and used this phylogenetic framework to assess evolutionary patterns in four genomic features of rapid adaptation: standing genetic variation, gene family expansion and contraction, transposable element abundance and location, and positive selection at protein-coding genes. Throughout approximately 20 million years of history, Leptinotarsa species show little evidence of gene family turnover and transposable element variation. However, there is a clear pattern of CPB experiencing higher rates of positive selection on protein-coding genes. We determine that these rates are associated with greater standing genetic variation due to larger effective population size, which supports the theory that the demographic history contributes to rates of protein evolution. Furthermore, we identify a suite of coding genes under positive selection that are putatively associated with pestiferousness in the Colorado potato beetle lineage. They are involved in the biological processes of xenobiotic detoxification, chemosensation and hormone function.
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Affiliation(s)
- Zachary P Cohen
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
| | - Kristian Brevik
- Department of Plant and Soil Sciences, University of Vermont, Burlington, VT, USA
| | - Yolanda H Chen
- Department of Plant and Soil Sciences, University of Vermont, Burlington, VT, USA
| | - David J Hawthorne
- Department of Entomology, University of Maryland, College Park, MD, USA
| | - Benjamin D Weibel
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
| | - Sean D Schoville
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
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Trans-generational desensitization and within-generational resensitization of a sucrose-best neuron in the polyphagous herbivore Helicoverpa armigera (Lepidoptera: Noctuidae). Sci Rep 2016; 6:39358. [PMID: 27966640 PMCID: PMC5155215 DOI: 10.1038/srep39358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 11/22/2016] [Indexed: 11/08/2022] Open
Abstract
Dietary exposure of insects to a feeding deterrent substance for hours to days can induce habituation and concomitant desensitization of the response of peripheral gustatory neurons to such a substance. In the present study, larvae of the herbivore Helicoverpa armigera were fed on diets containing either a high, medium or low concentration of sucrose, a major feeding stimulant. The responsiveness of the sucrose-best neuron in the lateral sensilla styloconica on the galea was quantified. Results showed the response of the sucrose-best neuron exposed to high-sucrose diets decreased gradually over successive generations, resulting in complete desensitization in the 5th and subsequent generations. However, the sensitivity was completely restored in the ninth generation after neonate larvae were exposed to low-sucrose diet. These findings demonstrate phenotypic plasticity and exclude inadvertent artificial selection for low sensitivity to sucrose. No significant changes were found in the sensitivity of caterpillars which experienced low- or medium-sucrose diets over the same generations. Such desensitization versus re-sensitization did not generalise to the phagosimulant myo-inositol-sensitive neuron or the feeding deterrent-sensitive neuron. Our results demonstrate that under conditions of high sucrose availability trans-generational desensitization of a neuron sensitive to this feeding stimulant becomes more pronounced whereas re-sensitization occurs within one generation.
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Tang QB, Huang LQ, Wang CZ, Tang QB, Zhan H, van Loon JJA. Inheritance of electrophysiological responses to leaf saps of host- and nonhost plants in two Helicoverpa species and their hybrids. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2014; 86:19-32. [PMID: 24599618 DOI: 10.1002/arch.21154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The polyphagous cotton bollworm Helicoverpa armigera (Hübner) and the oligophagous oriental tobacco budworm Helicoverpa assulta (Guenée) (Lepidoptera: Noctuidae) display contrasting heritable feeding preferences for cotton and pepper leaves. In this study, electrophysiological response patterns to cotton and pepper leaf saps in gustatory sensilla styloconica on the maxillae of these two species, their reciprocal F1 hybrids, and backcrossed lines were investigated using the tip recording technique. The identity of the neurons responding to the two leaf saps has been established using action potential waveform analysis. The two plant leaf saps elicited neural activity in at least six of the eight taste neurons innervating the lateral and medial sensilla styloconica of the parental species and crosses. Discriminant analysis of this multineural input predicted that correct classification occurred in 87 - 92% of the cases. Differences in taste neuron responses between insect lines to the two plant saps were consistent with differences in feeding preference behaviors. Comparisons of taste neuron response patterns of parental species, F1 hybrids and backcrosses indicate that autosomal loci contributed to the difference in gustatory response patterns between the two Helicoverpa species with the H. armigera derived alleles being partly dominant to those carried by H. assulta. These findings contribute to the understanding of gustatory codes for preference and provide insight into taste evolution of lepidopteran insects.
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Affiliation(s)
- Qing-Bo Tang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, The Chinese Academy of Sciences, Beijing, China
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Sablon L, Dickens JC, Haubruge É, Verheggen FJ. Chemical Ecology of the Colorado Potato Beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), and Potential for Alternative Control Methods. INSECTS 2012; 4:31-54. [PMID: 26466794 PMCID: PMC4553428 DOI: 10.3390/insects4010031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 11/08/2012] [Accepted: 11/20/2012] [Indexed: 11/16/2022]
Abstract
The Colorado potato beetle (CPB) has been a major insect pest to potato farming for over 150 years and various control methods have been established to reduce its impact on potato fields. Crop rotation and pesticide use are currently the most widely used approaches, although alternative methods are being developed. Here we review the role of various volatile and nonvolatile chemicals involved in behavior changes of CPB that may have potential for their control. First, we describe all volatile and nonvolatile chemicals involved in host plant localization and acceptance by CPB beetles, including glycoalcaloids and host plant volatiles used as kairomones. In the second section, we present the chemical signals used by CPB in intraspecific communication, including sex and aggregation pheromones. Some of these chemicals are used by natural enemies of CPBs to locate their prey and are presented in the third section. The last section of this review is devoted a discussion of the potential of some natural chemicals in biological control of CPB and to approaches that already reached efficient field applications.
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Affiliation(s)
- Ludovic Sablon
- Unité d'Entomologie fonctionnelle et évolutive, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, B-5030 Gembloux, Belgium.
| | - Joseph C Dickens
- Invasive Insect Biocontrol and Behavior Laboratory, Plant Sciences Institute, Henry A. Wallace Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland, 20705, USA.
| | - Éric Haubruge
- Unité d'Entomologie fonctionnelle et évolutive, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, B-5030 Gembloux, Belgium.
| | - François J Verheggen
- Unité d'Entomologie fonctionnelle et évolutive, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, B-5030 Gembloux, Belgium.
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Hiroi M, Tanimura T, Marion-Poll F. Hedonic taste in Drosophila revealed by olfactory receptors expressed in taste neurons. PLoS One 2008; 3:e2610. [PMID: 18612414 PMCID: PMC2440521 DOI: 10.1371/journal.pone.0002610] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Accepted: 06/04/2008] [Indexed: 01/01/2023] Open
Abstract
Taste and olfaction are each tuned to a unique set of chemicals in the outside world, and their corresponding sensory spaces are mapped in different areas in the brain. This dichotomy matches categories of receptors detecting molecules either in the gaseous or in the liquid phase in terrestrial animals. However, in Drosophila olfactory and gustatory neurons express receptors which belong to the same family of 7-transmembrane domain proteins. Striking overlaps exist in their sequence structure and in their expression pattern, suggesting that there might be some functional commonalities between them. In this work, we tested the assumption that Drosophila olfactory receptor proteins are compatible with taste neurons by ectopically expressing an olfactory receptor (OR22a and OR83b) for which ligands are known. Using electrophysiological recordings, we show that the transformed taste neurons are excited by odor ligands as by their cognate tastants. The wiring of these neurons to the brain seems unchanged and no additional connections to the antennal lobe were detected. The odor ligands detected by the olfactory receptor acquire a new hedonic value, inducing appetitive or aversive behaviors depending on the categories of taste neurons in which they are expressed i.e. sugar- or bitter-sensing cells expressing either Gr5a or Gr66a receptors. Taste neurons expressing ectopic olfactory receptors can sense odors at close range either in the aerial phase or by contact, in a lipophilic phase. The responses of the transformed taste neurons to the odorant are similar to those obtained with tastants. The hedonic value attributed to tastants is directly linked to the taste neurons in which their receptors are expressed.
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Affiliation(s)
- Makoto Hiroi
- UMR n°1272, Physiologie de l'Insecte: Signalisation and Communication, INRA / UPMC / AgroParisTech, Route de Saint Cyr, Versailles, France
- Department of Biology, Graduate School of Sciences, Kyushu University, Ropponmatsu, Fukuoka, Japan
| | - Teiichi Tanimura
- Department of Biology, Graduate School of Sciences, Kyushu University, Ropponmatsu, Fukuoka, Japan
| | - Frédéric Marion-Poll
- UMR n°1272, Physiologie de l'Insecte: Signalisation and Communication, INRA / UPMC / AgroParisTech, Route de Saint Cyr, Versailles, France
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Gökçe A, Isaacs R, Whalon ME. Behavioural response of Colorado potato beetle (Leptinotarsa decemlineata) larvae to selected plant extracts. PEST MANAGEMENT SCIENCE 2006; 62:1052-7. [PMID: 16886174 DOI: 10.1002/ps.1271] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Potato leaves were treated with 2, 20 or 200 g kg(-1) solutions of extracts of five plant species collected in Turkey, and then exposed to larvae of Colorado potato beetle, Leptinotarsa decemlineata (Say). During the first 24 h of exposure, leaf consumption was not affected by 2 g kg(-1) extracts, whereas significantly more leaf tissue remained on leaves treated with 20 g kg(-1) extracts of Arctium lappa L., Bifora radians M Bieb, Humulus lupulus L. or Xanthium strumarium L. than on untreated control leaves. Feeding was not affected by the 20 g kg(-1) extract of Verbascum songaricum Schrenk ex Fisch & Mey. Extracts of all species at 200 g kg(-1) reduced larval feeding, with H. lupulus and X. strumarium providing the greatest protection. Observations of larval behaviour over the first 15 min of exposure to these extracts revealed that the interaction of beetles with leaf tissue was significantly affected by plant extracts. Feeding frequency was not affected by 2 g kg(-1) extracts but was reduced by all higher concentrations. Feeding was inhibited completely by 20 g kg(-1) of H. lupulus extract and reduced significantly compared with the controls by all other extracts. Suppression of feeding was caused by all extracts at 200 g kg(-1), with V. songaricum providing 91% reduction in feeding duration. Rejection behaviour, in which larvae did not return to the leaf after their interaction with it, was rare on 2 g kg(-1) extracts but seen in over 60% of larvae on 20 g kg(-1) extracts and over 80% on 200 g kg(-1) extracts. The present results demonstrate that these extracts have significant ability to protect potato leaves for up to 24 h by prevention of feeding behaviour by L. decemlineata. Further studies are needed to determine the potential of these plant extracts, or their active components, for use in biologically based pest management strategies.
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Affiliation(s)
- Ayhan Gökçe
- Department of Plant Protection, Agriculture Faculty, Gaziosmanpasa University, Tokat, Turkey.
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Diehl PA, Vlimant M, Guerenstein P, Guerin PM. Ultrastructure and receptor cell responses of the antennal grooved peg sensilla of Triatoma infestans (Hemiptera: Reduviidae). ARTHROPOD STRUCTURE & DEVELOPMENT 2003; 31:271-285. [PMID: 18088986 DOI: 10.1016/s1467-8039(03)00004-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2002] [Accepted: 01/02/2003] [Indexed: 05/25/2023]
Abstract
Ultrastructural examination of grooved-peg (GP) sensilla on the antenna of fifth instar Triatoma infestans nymphs by scanning electron microscopy and transmission electron microscopy reveal that they are 8-18 microm long with a diameter of about 2-2.8 microm at the non-articulated base. Some pegs have a terminal pore. These double-walled wall-pore (dw-wp) sensilla have an outer cuticular wall with 13-18 longitudinal grooves at the distal part of the peg. Groove channels are present at the bottom of the grooves from which radial spoke channels lead into the inner sensillum-lymph cavity. A dendrite sheath connects the tip of the thecogen cell to the inner cuticular wall thus forming separated outer and inner sensillum-lymph cavities. Four or five bipolar receptor cells are ensheathed successively within the GP sensilla by the thecogen cell, trichogen and tormogen cells. The inner dendritic segments of each sensory cell give rise at the ciliary constriction to an unbranched outer dendritic segment which can reach the tip of the sensillum. Electrophysiological recordings from the GP sensilla indicate that they house NH3, short-chain carboxylic acid and short-chain aliphatic amine receptor cells and can be divided into three functional sub-types (GP 1-3). All GP sensilla carry a receptor cell excited by aliphatic amines, such as isobutylamine, a compound associated with vertebrate odour. GP type 1 and 2 sensilla house, in addition, an NH3-excited cell whereas the type 2 sensilla also contains a short-chain carboxylic acid receptor. No cell particularly sensitive to either NH3 or carboxylic acids was found in the grooved-peg type 3 sensilla. GP types 1, 2 and 3 represent ca. 36, 10 and 43% of the GP sensilla, respectively, whereas the remaining 11% contain receptor cells that manifest normal spontaneous activity but do not respond to any of the afore mentioned stimuli.
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Affiliation(s)
- Peter A Diehl
- Institute of Zoology, University, Rue Emile-Argand 11, CH-2007 Neuchâtel, Switzerland
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Hollister B, Dickens JC, Perez F, Deahl KL. Differential neurosensory responses of adult Colorado potato beetle, Leptinotarsa decemlineata, to glycoalkaloids. J Chem Ecol 2001; 27:1105-18. [PMID: 11504017 DOI: 10.1023/a:1010307827348] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Neurons from chemosensory hairs on the galeae of adult Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), were investigated for responses to glycoalkaloids of the family Solanaceae. While solanine and tomatine elicited irregular firing by multiple neurons and bursting activity at 1 mM concentration in most sensory hairs, stimulation with leptine I resulted in consistently high-frequency, slowly adapting responses with a dose-dependent effect between 0.03 and 0.3 mM concentrations. Responses to a mixture of solanine and leptine I suggested possible modification of the leptine I response by other glycoalkaloids, resulting in reduced neural activity relative to leptine I alone. These results establish a method for specifically evaluating leptine I and other glycoalkaloids for effects on feeding behavior of CPB and provide a sensory component for incorporating deterrent chemistry into biorational control methods for the CPB.
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Affiliation(s)
- B Hollister
- USDA, ARS, Beltsville Agricultural Research Center, Plant Sciences Institute, Maryland 20705, USA
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Functional morphology of a double-walled multiporous olfactory sensillum: the sensillum coeloconicum of Bombyx mori (Insecta, Lepidoptera). Tissue Cell 1998; 30:14-29. [DOI: 10.1016/s0040-8166(98)80003-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/1997] [Accepted: 09/02/1997] [Indexed: 11/23/2022]
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