The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.

Drosophila melanogaster larvae develop on fermenting fruits with increasing ethanol concentrations. To address the relevance of ethanol in the behavioral response of the larvae, we analyzed the function of ethanol in the context of olfactory associative behavior in Canton S and w1118 larvae. The mot...

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Main Authors: Michael Berger, Barış Yapıcı, Henrike Scholz
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2023-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0276714
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author Michael Berger
Barış Yapıcı
Henrike Scholz
author_facet Michael Berger
Barış Yapıcı
Henrike Scholz
author_sort Michael Berger
collection DOAJ
description Drosophila melanogaster larvae develop on fermenting fruits with increasing ethanol concentrations. To address the relevance of ethanol in the behavioral response of the larvae, we analyzed the function of ethanol in the context of olfactory associative behavior in Canton S and w1118 larvae. The motivation of larvae to move toward or out of an ethanol-containing substrate depends on the ethanol concentration and the genotype. Ethanol in the substrate reduces the attraction to odorant cues in the environment. Relatively short repetitive exposures to ethanol, which are comparable in their duration to reinforcer representation in olfactory associative learning and memory paradigms, result in positive or negative association with the paired odorant or indifference to it. The outcome depends on the order in which the reinforcer is presented during training, the genotype and the presence of the reinforcer during the test. Independent of the order of odorant presentation during training, Canton S and w1118 larvae do not form a positive or negative association with the odorant when ethanol is not present in the test context. When ethanol is present in the test, w1118 larvae show aversion to an odorant paired with a naturally occurring ethanol concentration of 5%. Our results provide insights into the parameters influencing olfactory associative behaviors using ethanol as a reinforcer in Drosophila larvae and indicate that short exposures to ethanol might not uncover the positive rewarding properties of ethanol for developing larvae.
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spelling doaj.art-9c6ab46b74e4499ba2cb2968605dbb952023-04-12T05:32:53ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-01183e027671410.1371/journal.pone.0276714The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.Michael BergerBarış YapıcıHenrike ScholzDrosophila melanogaster larvae develop on fermenting fruits with increasing ethanol concentrations. To address the relevance of ethanol in the behavioral response of the larvae, we analyzed the function of ethanol in the context of olfactory associative behavior in Canton S and w1118 larvae. The motivation of larvae to move toward or out of an ethanol-containing substrate depends on the ethanol concentration and the genotype. Ethanol in the substrate reduces the attraction to odorant cues in the environment. Relatively short repetitive exposures to ethanol, which are comparable in their duration to reinforcer representation in olfactory associative learning and memory paradigms, result in positive or negative association with the paired odorant or indifference to it. The outcome depends on the order in which the reinforcer is presented during training, the genotype and the presence of the reinforcer during the test. Independent of the order of odorant presentation during training, Canton S and w1118 larvae do not form a positive or negative association with the odorant when ethanol is not present in the test context. When ethanol is present in the test, w1118 larvae show aversion to an odorant paired with a naturally occurring ethanol concentration of 5%. Our results provide insights into the parameters influencing olfactory associative behaviors using ethanol as a reinforcer in Drosophila larvae and indicate that short exposures to ethanol might not uncover the positive rewarding properties of ethanol for developing larvae.https://doi.org/10.1371/journal.pone.0276714
spellingShingle Michael Berger
Barış Yapıcı
Henrike Scholz
The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
PLoS ONE
title The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
title_full The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
title_fullStr The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
title_full_unstemmed The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
title_short The function of ethanol in olfactory associative behaviors in Drosophila melanogaster larvae.
title_sort function of ethanol in olfactory associative behaviors in drosophila melanogaster larvae
url https://doi.org/10.1371/journal.pone.0276714
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