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Bailly TPM, Kohlmeier P, Etienne RS, Wertheim B, Billeter JC. Social modulation of oogenesis and egg laying in Drosophila melanogaster. Curr Biol 2023:S0960-9822(23)00750-9. [PMID: 37369209 DOI: 10.1016/j.cub.2023.05.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 02/02/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023]
Abstract
Being part of a group facilitates cooperation between group members but also creates competition for resources. This is a conundrum for gravid females, whose future offspring benefit from being in a group only if there are enough resources relative to group size. Females may therefore be expected to modulate reproductive output depending on social context. In the fruit fly Drosophila melanogaster, females actively attract conspecifics to lay eggs on the same resources, generating groups in which individuals may cooperate or compete. The genetic tractability of this species allows dissecting the mechanisms underlying physiological adaptation to social context. Here, we show that females produce eggs increasingly faster as group size increases. By laying eggs faster when grouped than when isolated, females reduce competition between offspring and increase offspring survival. In addition, grouped females lay eggs during the day, while isolated females lay them at night. We show that responses to the presence of others requires visual input and that flies from any sex, mating status, or species can trigger these responses. The mechanisms of this modulation of egg laying by group is connected to a lifting of the inhibition of light on oogenesis and egg laying, possibly mediated in part by an increase in juvenile hormone activity. Because modulation of reproduction by social context is a hallmark of animals with higher levels of sociality, our findings in a species considered solitary question the validity of this nomenclature and suggest a widespread and profound influence of social context on reproduction.
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Affiliation(s)
- Tiphaine P M Bailly
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9474AG Groningen, the Netherlands
| | - Philip Kohlmeier
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9474AG Groningen, the Netherlands; University of Memphis, Department of Biological Sciences, Memphis, TN 38152-3530, USA
| | - Rampal S Etienne
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9474AG Groningen, the Netherlands
| | - Bregje Wertheim
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9474AG Groningen, the Netherlands
| | - Jean-Christophe Billeter
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9474AG Groningen, the Netherlands.
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Dawson EH, Bailly TPM, Dos Santos J, Moreno C, Devilliers M, Maroni B, Sueur C, Casali A, Ujvari B, Thomas F, Montagne J, Mery F. Social environment mediates cancer progression in Drosophila. Nat Commun 2018; 9:3574. [PMID: 30177703 PMCID: PMC6120865 DOI: 10.1038/s41467-018-05737-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 07/19/2018] [Indexed: 12/18/2022] Open
Abstract
The influence of oncogenic phenomena on the ecology and evolution of animal species is becoming an important research topic. Similar to host-pathogen interactions, cancer negatively affects host fitness, which should lead to the selection of host control mechanisms, including behavioral traits that best minimize the proliferation of malignant cells. Social behavior is suggested to influence tumor progression. While the ecological benefits of sociality in gregarious species are widely acknowledged, only limited data are available on the role of the social environment on cancer progression. Here, we exposed adult Drosophila, with colorectal-like tumors, to different social environments. We show how subtle variations in social structure have dramatic effects on the progression of tumor growth. Finally, we reveal that flies can discriminate between individuals at different stages of tumor development and selectively choose their social environment accordingly. Our study demonstrates the reciprocal links between cancer and social interactions and how sociality may impact health and fitness in animals and its potential implications for disease ecology.
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Affiliation(s)
- Erika H Dawson
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
- Unité mixte internationale de Modélisation Mathématique et Informatique des Systèmes Complexes. (UMI IRD/ Sorbonne Université, UMMISCO), 32 Avenue Henri Varagnat, 93143, Bondy Cedex, France
| | - Tiphaine P M Bailly
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Julie Dos Santos
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Céline Moreno
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Maëlle Devilliers
- Institut for Integrative Biology of the Cell (I2BC), CNRS, Université Paris-Sud, CEA, UMR 9198, 91190, Gif-sur-Yvette, France
| | - Brigitte Maroni
- Institut for Integrative Biology of the Cell (I2BC), CNRS, Université Paris-Sud, CEA, UMR 9198, 91190, Gif-sur-Yvette, France
| | - Cédric Sueur
- Département Ecologie, Physiologie et Ethologie, Centre National de la Recherche Scientifique, 67037, Strasbourg, France
- Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, 67037, Strasbourg, France
| | - Andreu Casali
- Institut de Recerca Biomèdica de Lleida Fundació Dr. Pifarré (IRBLleida), 25198, Lleida, Spain
| | - Beata Ujvari
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, 3216, Australia
| | - Frederic Thomas
- CREEC, MIVEGEC, UMR IRD/CNRS/UM 5290, 34394, Montpellier, France.
| | - Jacques Montagne
- Institut for Integrative Biology of the Cell (I2BC), CNRS, Université Paris-Sud, CEA, UMR 9198, 91190, Gif-sur-Yvette, France.
| | - Frederic Mery
- Evolution, Génomes, Comportement & Ecologie, CNRS, IRD, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France.
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