Achroia grisella

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Michael D Greenfield - One of the best experts on this subject based on the ideXlab platform.

  • quantitative genetic mapping and genome assembly in the lesser wax moth Achroia grisella
    G3: Genes Genomes Genetics, 2019
    Co-Authors: Boryana S Koseva, Jennifer L. Hackett, Jennifer M. Gleason, Michael D Greenfield, Yihong Zhou, Bethany R. Harris, John Kelly, Stuart J Macdonald
    Abstract:

    Specific characteristics of the male Achroia grisella acoustic mating signal determine a male's attractiveness toward females. These features are genetically variable in populations, and mapping experiments have been used to identify loci contributing to song variation, and understand the evolutionary forces acting on this important sexual trait. Here we built on this foundation and carried out QTL (Quantitative Trait Locus) mapping using >1,000 recombinant individuals, genotyping this large cohort at thousands of sequence-based markers covering the entire collection of 30 A. grisella chromosomes. This dense marker set, coupled with our development of an annotated, draft genome of A. grisella, allowed us to link >3,000 genome scaffolds, >10,000 predicted genes, and close to 275Mb of genome sequence to chromosomes. Our QTL mapping confirmed a fraction of the QTL identified in a previous study, and additionally revealed novel loci. Collectively, QTL explained only small fractions of the phenotypic variance, suggesting many more causative factors remain below the detection threshold of our study. A surprising, and ultimately challenging feature of our study was the low level of intrachromosomal recombination present in our mapping population. This led to difficulty ordering markers along linkage groups, necessitating a chromosome-by-chromosome mapping approach, rather than true interval mapping, and precluded confident ordering/orienting of scaffolds along each chromosome. Nonetheless, our study increased the genomic resources available for the A. grisella system. Enabled by ever more powerful technologies, future investigators will be able to leverage our data to provide more detailed genetic dissection of male song variation in A. grisella.

  • evolution of directional hearing in moths via conversion of bat detection devices to asymmetric pressure gradient receivers
    Proceedings of the National Academy of Sciences of the United States of America, 2016
    Co-Authors: Andrew Reid, Thibaut Marincudraz, James Frederick Charles Windmill, Michael D Greenfield
    Abstract:

    Abstract Small animals typically localize sound sources by means of complex internal connections and baffles that effectively increase time or intensity differences between the two ears. However, some miniature acoustic species achieve directional hearing without such devices, indicating that other mechanisms have evolved. Using 3D laser vibrometry to measure tympanum deflection, we show that female lesser waxmoths (Achroia grisella) can orient toward the 100-kHz male song, because each ear functions independently as an asymmetric pressure gradient receiver that responds sharply to high-frequency sound arriving from an azimuth angle 30° contralateral to the animal's midline. We found that females presented with a song stimulus while running on a locomotion compensation sphere follow a trajectory 20°–40° to the left or right of the stimulus heading but not directly toward it, movement consistent with the tympanum deflections and suggestive of a monaural mechanism of auditory tracking. Moreover, females losing their track typically regain it by auditory scanning—sudden, wide deviations in their heading—and females initially facing away from the stimulus quickly change their general heading toward it, orientation indicating superior ability to resolve the front–rear ambiguity in source location. X-ray computer-aided tomography (CT) scans of the moths did not reveal any internal coupling between the two ears, confirming that an acoustic insect can localize a sound source based solely on the distinct features of each ear.

  • Achroia_phenotypes_males
    2016
    Co-Authors: Sylvain Alem, Denis Limousin, Brigitte Courtois, Rejane Streiff, Saliha Zenboudji, Michael D Greenfield
    Abstract:

    Phenotypes measured in Achroia grisella males. Data used for the QTL analysis

  • Achroia_genotypes_males
    2016
    Co-Authors: Sylvain Alem, Denis Limousin, Brigitte Courtois, Rejane Streiff, Saliha Zenboudji, Michael D Greenfield
    Abstract:

    Genotypes of Achroia grisella males. 0 / 1 = absence / presence of AFLP markers. Data used for the QTL analysis

  • Genetic Architecture of Sexual Selection: QTL Mapping of Male Song and Female Receiver Traits in an Acoustic Moth
    PLoS ONE, 2016
    Co-Authors: Denis Limousin, Brigitte Courtois, Virginie Dupuy, Sylvain Alem, Rejane Streiff, Michael D Greenfield
    Abstract:

    Models of indirect (genetic) benefits sexual selection predict linkage disequilibria between genes that influence male traits and female preferences, owing to non-random mate choice or physical linkage. Such linkage disequilibria can accelerate the evolution of traits and preferences to exaggerated levels. Both theory and recent empirical findings on species recognition suggest that such linkage disequilibria may result from physical linkage or pleiotropy, but very little work has addressed this possibility within the context of sexual selection. We studied the genetic architecture of sexually selected traits by analyzing signals and preferences in an acoustic moth, Achroia grisella, in which males attract females with a train of ultrasound pulses and females prefer loud songs and a fast pulse rhythm. Both male signal characters and female preferences are repeatable and heritable traits. Moreover, female choice is based largely on male song, while males do not appear to provide direct benefits at mating. Thus, some genetic correlation between song and preference traits is expected. We employed a standard crossing design between inbred lines and used AFLP markers to build a linkage map for this species and locate quantitative trait loci (QTL) that influence male song and female preference. Our analyses mostly revealed QTLs of moderate strength that influence various male signal and female receiver traits, but one QTL was found that exerts a major influence on the pulse-pair rate of male song, a critical trait in female attraction. However, we found no evidence of specific co-localization of QTLs influencing male signal and female receiver traits on the same linkage groups. This finding suggests that the sexual selection process would proceed at a modest rate in A. grisella and that evolution toward exaggerated character states may be tempered. We suggest that this equilibrium state may be more the norm than the exception among animal species.

Berchi Selima - One of the best experts on this subject based on the ideXlab platform.

  • Un Gecko africain Hemidactylus mabouia (Squamata, Gekkonidae) dans la lutte contre les fausses teignes des ruches Galleria mellonella et Achroia grisella (Lepidoptera, Pyralidae)
    PERSÉE : Université de Lyon CNRS & ENS de Lyon, 2009
    Co-Authors: Dridah Aziz, Louadi Kamel, Berchi Selima
    Abstract:

    An African Gecko Hemidactylus mabouia (Squamata, Gekkonidae) to control the wax moths of hives Galleria mellonella and Achroia grisella (Lepidoptera, Pyralidae). To test the effect on the Honey Bees and the control efficiency on moths Galleria mellonella Linnaeus and Achroia grisella Fabricius (Insecta, Lepidoptera) called commonly greater and lesser wax moths of bee hives, the Squamate Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata, Gekkonidae) has been introduced in hives populated of bees in presence separately of imagos of wax moths and honey bees in globes. It showed that Hemidactylus mabouia fitted easily to microclimatic conditions of hives and consumed 90.33 ± 1.93% of moths ; on the other hand it had no effect on bees’ populations. Introduction of gecko couples in hives infested by this Lepidoptera also showed that the rate of consumed wax moths adjoined the 90.28 ± 3.64%.Pour tester l’effet sur les Abeilles domestiques et l’efficacité sur la lutte contre les papillons nocturnes Galleria mellonella Linné et Achroia grisella Fabricius (Insecta, Lepidoptera) appelés communément grandes et petites fausses teignes des ruches, le Squamate Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata, Gekkonidae) a été introduit dans des ruches peuplées d’Abeilles en présence séparément d’imagos de fausses teignes et des Abeilles domestiques dans des bocaux. Il s’est avéré que Hemidactylus mabouia s’adapte facilement aux conditions microclimatiques de la ruche et a consommé 90,33 ± 1,93% des papillons ; par contre il n’a aucun effet sur la population d’Abeilles. L’introduction de couples de gecko dans des ruches infestées par ces insectes lépidoptères donne également un taux moyen presque identique de fausses teignes consommées de 90,28 ± 3,64 %.Dridah Aziz, Louadi Kamel, Berchi Selima. Un Gecko africain Hemidactylus mabouia (Squamata, Gekkonidae) dans la lutte contre les fausses teignes des ruches Galleria mellonella et Achroia grisella (Lepidoptera, Pyralidae). In: Bulletin de la Société entomologique de France, volume 114 (4),2009. pp. 423-427

  • Utilisation de Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) contre la grande et la petite fausse teigne des ruches Galleria mellonella (Linné) et Achroia grisella (Fabricius) (Lepidoptera, Pyralidae)
    PERSÉE : Université de Lyon CNRS & ENS de Lyon, 2007
    Co-Authors: Dridah Aziz, Louadi Kamel, Berchi Selima
    Abstract:

    Utilization of Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) to control the greater and lesser wax moths Galleria mellonella (L.) and Achroia grisella (Fab.) (Lepidoptera, Pyralidae). The para-sitoid wasp Dibrachys cavus Walker (Hymenoptera Pteromalidae) has been introduced in bottles with wax moths larvae, Galleria mellonella (L.) and Achroia grisella (Fab.), Pyralidae, inside honeybees hives to test its efficiency in the control of these lepidoptera. The wasp fited easily to hive microclimatic conditions and destroyed 96% of the wax moth population. Same results were obtained in dead colonies infested by the wax moths.Dibrachys cavus Walker, un Hyménoptère Chalcidien Pteromalidae, a été introduit dans des bocaux avec des larves de fausses teignes, Galleria mellonella (Linné) et Achroia grisella (Fabricius), Pyralidae, à l'intérieur des ruches peuplées d'abeilles domestiques pour tester son efficacité dans la lutte contre ces lépidoptères. Il s'avère que ce parasitoïde s'adapte bien aux conditions microclimatiques de la ruche ; il a détruit 96% de la population de fausses teignes. Des résultats analogues ont été observés lors des lâchers dans les ruches mortes envahies par les fausses teignes.Dridah Aziz, Louadi Kamel, Berchi Selima. Utilisation de Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) contre la grande et la petite fausse teigne des ruches Galleria mellonella (Linné) et Achroia grisella (Fabricius) (Lepidoptera, Pyralidae). In: Bulletin de la Société entomologique de France, volume 112 (2), juin 2007. pp. 249-251

Selima Berchi - One of the best experts on this subject based on the ideXlab platform.

Dridah Aziz - One of the best experts on this subject based on the ideXlab platform.

  • Un Gecko africain Hemidactylus mabouia (Squamata, Gekkonidae) dans la lutte contre les fausses teignes des ruches Galleria mellonella et Achroia grisella (Lepidoptera, Pyralidae)
    PERSÉE : Université de Lyon CNRS & ENS de Lyon, 2009
    Co-Authors: Dridah Aziz, Louadi Kamel, Berchi Selima
    Abstract:

    An African Gecko Hemidactylus mabouia (Squamata, Gekkonidae) to control the wax moths of hives Galleria mellonella and Achroia grisella (Lepidoptera, Pyralidae). To test the effect on the Honey Bees and the control efficiency on moths Galleria mellonella Linnaeus and Achroia grisella Fabricius (Insecta, Lepidoptera) called commonly greater and lesser wax moths of bee hives, the Squamate Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata, Gekkonidae) has been introduced in hives populated of bees in presence separately of imagos of wax moths and honey bees in globes. It showed that Hemidactylus mabouia fitted easily to microclimatic conditions of hives and consumed 90.33 ± 1.93% of moths ; on the other hand it had no effect on bees’ populations. Introduction of gecko couples in hives infested by this Lepidoptera also showed that the rate of consumed wax moths adjoined the 90.28 ± 3.64%.Pour tester l’effet sur les Abeilles domestiques et l’efficacité sur la lutte contre les papillons nocturnes Galleria mellonella Linné et Achroia grisella Fabricius (Insecta, Lepidoptera) appelés communément grandes et petites fausses teignes des ruches, le Squamate Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata, Gekkonidae) a été introduit dans des ruches peuplées d’Abeilles en présence séparément d’imagos de fausses teignes et des Abeilles domestiques dans des bocaux. Il s’est avéré que Hemidactylus mabouia s’adapte facilement aux conditions microclimatiques de la ruche et a consommé 90,33 ± 1,93% des papillons ; par contre il n’a aucun effet sur la population d’Abeilles. L’introduction de couples de gecko dans des ruches infestées par ces insectes lépidoptères donne également un taux moyen presque identique de fausses teignes consommées de 90,28 ± 3,64 %.Dridah Aziz, Louadi Kamel, Berchi Selima. Un Gecko africain Hemidactylus mabouia (Squamata, Gekkonidae) dans la lutte contre les fausses teignes des ruches Galleria mellonella et Achroia grisella (Lepidoptera, Pyralidae). In: Bulletin de la Société entomologique de France, volume 114 (4),2009. pp. 423-427

  • Utilisation de Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) contre la grande et la petite fausse teigne des ruches Galleria mellonella (Linné) et Achroia grisella (Fabricius) (Lepidoptera, Pyralidae)
    PERSÉE : Université de Lyon CNRS & ENS de Lyon, 2007
    Co-Authors: Dridah Aziz, Louadi Kamel, Berchi Selima
    Abstract:

    Utilization of Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) to control the greater and lesser wax moths Galleria mellonella (L.) and Achroia grisella (Fab.) (Lepidoptera, Pyralidae). The para-sitoid wasp Dibrachys cavus Walker (Hymenoptera Pteromalidae) has been introduced in bottles with wax moths larvae, Galleria mellonella (L.) and Achroia grisella (Fab.), Pyralidae, inside honeybees hives to test its efficiency in the control of these lepidoptera. The wasp fited easily to hive microclimatic conditions and destroyed 96% of the wax moth population. Same results were obtained in dead colonies infested by the wax moths.Dibrachys cavus Walker, un Hyménoptère Chalcidien Pteromalidae, a été introduit dans des bocaux avec des larves de fausses teignes, Galleria mellonella (Linné) et Achroia grisella (Fabricius), Pyralidae, à l'intérieur des ruches peuplées d'abeilles domestiques pour tester son efficacité dans la lutte contre ces lépidoptères. Il s'avère que ce parasitoïde s'adapte bien aux conditions microclimatiques de la ruche ; il a détruit 96% de la population de fausses teignes. Des résultats analogues ont été observés lors des lâchers dans les ruches mortes envahies par les fausses teignes.Dridah Aziz, Louadi Kamel, Berchi Selima. Utilisation de Dibrachys cavus Walker, 1835 (Hymenoptera, Pteromalidae) contre la grande et la petite fausse teigne des ruches Galleria mellonella (Linné) et Achroia grisella (Fabricius) (Lepidoptera, Pyralidae). In: Bulletin de la Société entomologique de France, volume 112 (2), juin 2007. pp. 249-251

Aziz Dridah - One of the best experts on this subject based on the ideXlab platform.