The foraging gene affects adult but not larval olfactory-related behavior in Drosophila melanogaster

Shaver, Susan A.; Varnam, C.J; Hilliker, Arthur J.; Sokolowski, Marla B.

doi:10.1016/s0166-4328(97)00206-4

Cited by 42 publications

(26 citation statements)

References 42 publications

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“…It is likely that plasticity of pheromone response in C. fraxinella is regulated by allelic polymorphism of genes that control a more general reproductive diapause phenomenon in this species, and on-going research in our laboratory is examining variation in male accessory gland morphology and protein expression and spermiogenesis throughout the extended adult life stage. Allelic variation of the Drosophila melanogaster foraging gene (Shaver et al, 1998) and associated expression of a protein kinase influences behavioral response to food odors in adult flies (Shaver et al, 1998). EAG responses by D. melanogaster antennae to host volatiles also vary with expression of circadian clock genes (Krishnan et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

Peripheral and behavioral plasticity of pheromone response and its hormonal control in a long-lived moth

Lemmen

Evenden

2009

Journal of Experimental Biology

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SUMMARYReproductive success in many animals depends on the efficient production of and response to sexual signals. In insects, plasticity in sexual communication is predicted in species that experience periods of reproductive inactivity when environmental conditions are unsuitable for reproduction. Here, we study a long-lived moth Caloptilia fraxinella (Ely) (Lepidoptera: Gracillariidae) that is reproductively inactive from eclosion in summer until the following spring. Male sex pheromone responsiveness is plastic and corresponds with female receptivity. Pheromone response plasticity has not been studied in a moth with an extended period of reproductive inactivity. In this study, we ask whether male antennal response and flight behavior are plastic during different stages of reproductive inactivity and whether these responses are regulated by juvenile hormone. Antennal response to the pheromone blend is significantly reduced in reproductively inactive males tested in the summer and autumn as compared with reproductively active males tested in the spring. Reproductively inactive autumn but not summer males show lower antennal responses to individual pheromone components compared with spring males. Treatment with methoprene enhances antennal response of autumn but not summer males to high doses of the pheromone blend. Behavioral response is induced by methoprene treatment in males treated in the autumn but not in the summer. Plasticity of pheromone response in C. fraxinella is regulated, at least in part, by the peripheral nervous system. Antennal and behavioral response to pheromone differed in reproductively active and inactive males and increased with methoprene treatment of inactive males.

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Section: Discussionmentioning

confidence: 99%

Peripheral and behavioral plasticity of pheromone response and its hormonal control in a long-lived moth

Lemmen

Evenden

2009

Journal of Experimental Biology

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“…Larval and adult rovers leave food patches readily and explore more food patches, whereas sitters tend to remain on food patches [28]. There seems to be a strong connection between PKG activity and olfactory response to food, which in turn may lead to variation in aggregation patterns [29]. Variation in the tendency to aggregate may impact group dynamics and population structure, even in the absence of food, though this has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Genetic variation in aggregation behaviour and interacting phenotypes in Drosophila

et al. 2016

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Aggregation behaviour is the tendency for animals to group together, which may have important consequences on individual fitness. We used a combination of experimental and simulation approaches to study how genetic variation and social environment interact to influence aggregation dynamics in Drosophila. To do this, we used two different natural lines of Drosophila that arise from a polymorphism in the foraging gene (rovers and sitters). We placed groups of flies in a heated arena. Flies could freely move towards one of two small, cooler refuge areas. In groups of the same strain, sitters had a greater tendency to aggregate. The observed behavioural variation was based on only two parameters: the probability of entering a refuge and the likelihood of choosing a refuge based on the number of individuals present. We then directly addressed how different strains interact by mixing rovers and sitters within a group. Aggregation behaviour of each line was strongly affected by the presence of the other strain, without changing the decision rules used by each. Individuals obeying local rules shaped complex group dynamics via a constant feedback loop between the individual and the group. This study could help to identify the circumstances under which particular group compositions may improve individual fitness through underlying aggregation mechanisms under specific environmental conditions.

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“…imaginal conditioning | sensory adaptation | odor imprinting | JensenShannon divergence | chemo receptor tuning O lfaction in the fruit fly, Drosophila melanogaster, is crucial for a variety of behaviors, including associative learning (1,2), courtship (3), foraging (4), and flight (5,6). Odorants are detected by approximately 1,300 olfactory receptor neurons (ORNs), which are housed in sensilla on the third antennal segment and individually express one of approximately 50 functional odor receptors in adults (7)(8)(9).…”

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confidence: 99%

Post-eclosion odor experience modifies olfactory receptor neuron coding in Drosophila

Iyengar

Chakraborty

Goswami

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

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Olfactory responses of Drosophila undergo pronounced changes after eclosion. The flies develop attraction to odors to which they are exposed and aversion to other odors. Behavioral adaptation is correlated with changes in the firing pattern of olfactory receptor neurons (ORNs). In this article, we present an information-theoretic analysis of the firing pattern of ORNs. Flies reared in a synthetic odorless medium were transferred after eclosion to three different media: (i) a synthetic medium relatively devoid of odor cues, (ii) synthetic medium infused with a single odorant, and (iii) complex cornmeal medium rich in odors. Recordings were made from an identified sensillum (type II), and the Jensen-Shannon divergence (D JS ) was used to assess quantitatively the differences between ensemble spike responses to different odors. Analysis shows that prolonged exposure to ethyl acetate and several related esters increases sensitivity to these esters but does not improve the ability of the fly to distinguish between them. Flies exposed to cornmeal display varied sensitivity to these odorants and at the same time develop greater capacity to distinguish between odors. Deprivation of odor experience on an odorless synthetic medium leads to a loss of both sensitivity and acuity. Rich olfactory experience thus helps to shape the ORNs response and enhances its discriminative power. The experiments presented here demonstrate an experience-dependent adaptation at the level of the receptor neuron.imaginal conditioning | sensory adaptation | odor imprinting | JensenShannon divergence | chemo receptor tuning O lfaction in the fruit fly, Drosophila melanogaster, is crucial for a variety of behaviors, including associative learning (1, 2), courtship (3), foraging (4), and flight (5, 6). Odorants are detected by approximately 1,300 olfactory receptor neurons (ORNs), which are housed in sensilla on the third antennal segment and individually express one of approximately 50 functional odor receptors in adults (7-9). All ORNs expressing the same olfactory receptor project to one of approximately 50 glomeruli in the antennal lobe, where they synapse with a set of projection neurons (PNs) (10, 11). The activity of ORNs, either excitation or inhibition, provides behaviorally relevant information about odorants such as their identity, concentration, and source. The information transduced by an ORN is processed in the antennal lobe (12, 13) and sent via PNs to the mushroom bodies, which are believed to be centers for olfactory learning and memory (14, 15).Experience-dependent modifiability (i.e., plasticity) of olfactory representation at the level of the central nervous system is well known (2,16,17). Relatively little attention has been paid to long-term changes in sensory neuron activity resulting from odor experiences. It was previously shown that exposure of newly born imago to a particular set of odorants alters their responses to these odors (18,19). The flies develop an attraction to the chemicals to which they are exposed and an av...

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The foraging gene affects adult but not larval olfactory-related behavior in Drosophila melanogaster

Cited by 42 publications

References 42 publications

Peripheral and behavioral plasticity of pheromone response and its hormonal control in a long-lived moth

Peripheral and behavioral plasticity of pheromone response and its hormonal control in a long-lived moth

Genetic variation in aggregation behaviour and interacting phenotypes in Drosophila

Post-eclosion odor experience modifies olfactory receptor neuron coding in Drosophila

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