Social modulation of oogenesis and egg laying in Drosophila melanogaster

Bailly, Tiphaine P. M.; Kohlmeier, Philip; Etienne, Rampal S.; Wertheim, Bregje; Billeter, Jean‐Christophe

doi:10.1016/j.cub.2023.05.074

Cited by 6 publications

(10 citation statements)

References 106 publications

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“…Figure 1 also shows that, in LD, CS females have a peak of egg deposition at the end of the day, as described earlier 14,16,17 ( Figure 1A and 1E ) and that rhythmicity is between 60% and 75% ( Figure 1I ). In DD, rhythmicity percentages can be even smaller.…”

Section: Resultssupporting

confidence: 80%

“…Likewise, the assessment of rhythmicity is more difficult than for locomotor activity because the variable studied (number of eggs) is discrete and usually small when recorded for periods of a few hours. Even though population-level experiments can partially overcome these difficulties, social interactions can influence the oviposition behavior of Drosophila females 16 , making the results much harder to interpret.…”

Section: Egg-laying Is Rhythmic When Registered With An Automatic Ovi...mentioning

confidence: 99%

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Circadian control of a sex-specific behaviour in Drosophila

Riva,

Ceriani,

Risau-Gusman

et al. 2024

Preprint

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An endogenous circadian clock controls many of the behavioral traits of Drosophila melanogaster. This clock relies on the activity of interconnected clusters of neurons that harbor the clock machinery. The hierarchy among clusters involved in the control of rest-activity cycles has been extensively studied. Sexually dimorphic behaviors, on the other hand, have received less attention. Even though egg-laying, a female characteristic behavior, has been shown to be rhythmic, it remains largely unexplored possibly due to metholodological constraints. The current study provides the first steps towards determining the neural substrates underlying the circadian control of egg-laying. We show that, whereas the lateral ventral neurons (LNvs) and the dorsal neurons (DNs) are dispensable, the lateral dorsal neurons (LNds) are necessary for rhythmic egg-laying. Systematically probing the Drosophila connectome for contacts between circadian clusters and oviposition-related neurons, we found no evidence of direct connections between LNvs or DNs and neurons recruited during oviposition. Conversely, we did find bidirectional connections between Cryptochrome (Cry) expressing LNd (Cry+ LNds) and oviposition related neurons. Taken together, these results reveal that cry positive LNd neurons have a leading role in the control of the egg-laying rhythm in Drosophila females.

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Section: Resultssupporting

confidence: 80%

Section: Egg-laying Is Rhythmic When Registered With An Automatic Ovi...mentioning

confidence: 99%

Circadian control of a sex-specific behaviour in Drosophila

Riva,

Ceriani,

Risau-Gusman

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Figure 1 also shows that, in LD, CS females have a peak of egg deposition at the end of the day, as described earlier 14,16,17 (Figure 1A and 1E) and that rhythmicity is between 60% and 75% (Figure 1I).…”

Section: Egg-laying Is Rhythmic When Registered With An Automatic Ovi...supporting

confidence: 80%

Circadian control of a sex-specific behaviour in Drosophila

Franco,

Riva,

Ceriani

et al. 2024

Preprint

View full text Add to dashboard Cite

An endogenous circadian clock controls many of the behavioral traits of Drosophila melanogaster. This ¨clock¨ relies on the activity of interconnected clusters of neurons that harbor the clock machinery. The hierarchy among clusters involved in the control of rest-activity cycles has been extensively studied. Sexually dimorphic behaviors, on the other hand, have received less attention. Even though egg-laying, a female characteristic behavior, has been shown to be rhythmic, it remains largely unexplored possibly due to metholodological constraints. The current study provides the first steps towards determining the neural substrates underlying the circadian control of egg-laying. We show that, whereas the lateral ventral neurons (LNvs) and the dorsal neurons (DNs) are dispensable, the lateral dorsal neurons (LNds) are necessary for rhythmic egg-laying. Systematically probing the Drosophila connectome for contacts between circadian clusters and oviposition-related neurons, we found no evidence of direct connections between LNvs or DNs and neurons recruited during oviposition. Conversely, we did find bidirectional connections between Cryptochrome (Cry) expressing LNd (Cry+ LNds) and oviposition related neurons. Taken together, these results reveal that cry positive LNd neurons have a leading role in the control of the egg-laying rhythm in Drosophila females.

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“…The potential fitness benefits of joining an existing egg cluster could depend on key factors such as number, quality, fertility, and age of eggs already present. Based on existing evidence that females can vary the number of eggs they lay according to social density (9, 10, 32) we predict, and test here, the idea that females should use number of eggs and/or number of adult conspecifics as cues to direct their egg-clustering patterns.…”

Section: Introductionmentioning

confidence: 90%

Female fruit flies use social cues to make egg clustering decisions

Churchill,

Fowler,

Friend

et al. 2024

Preprint

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The ability to respond plastically to environmental cues is a key determinant of fitness. In changing environments, females plastically adjust the number and placement of eggs they lay, allowing them to optimise the level of resources available for offspring by minimising over-exploitation whilst also accruing potential cooperative benefits such as through communal larval feeding. This suggests that the pattern of female egg laying should vary across differing social environments, to balance potential for cooperative benefits versus competitive costs of egg clustering. Here we test this prediction in the fruit flyDrosophila melanogaster. We developed a mathematical null model, which verified that females lay eggs on substrates in significantly non-random patterns. We then tested the effects of manipulating social density and egg density on the egg laying patterns of mated females. As the density of adult females was increased, females laid more eggs, laid them faster, and laid more eggs in clusters. Females also preferred to place eggs within existing egg clusters -and most egg clusters were of mixed maternity. These results show that females in groups, or females that encounter already laid eggs, adjust their laying to place more eggs in mixed maternity clusters. Overall, the results are consistent with our predictions and reveal that females exhibit active choice in egg investment and egg deposition patterns in response to variation in social environments.

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Social modulation of oogenesis and egg laying in Drosophila melanogaster

Cited by 6 publications

References 106 publications

Circadian control of a sex-specific behaviour in Drosophila

Circadian control of a sex-specific behaviour in Drosophila

Circadian control of a sex-specific behaviour in Drosophila

Female fruit flies use social cues to make egg clustering decisions

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