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Tan S, Li J, Yang Q, Fu J, Chen J. Light/dark phase influences intra-individual plasticity in maintenance metabolic rate and exploratory behavior independently in the Asiatic toad. BMC ZOOL 2022; 7:39. [PMID: 37170388 PMCID: PMC10127016 DOI: 10.1186/s40850-022-00139-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 06/28/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
It is well-known that light/dark phase can affect energy expenditure and behaviors of most organisms; however, its influences on individuality (inter-individual variance) and plasticity (intra-individual variance), as well as their associations remain unclear. To approach this question, we repeatedly measured maintenance metabolic rate (MR), exploratory and risk-taking behaviors across light/dark phase four times using wild-caught female Asiatic toads (Bufo gargarizans), and partitioned their variance components with univariate and bivariate mixed-effects models.
Results
The group means of maintenance MR and risk-taking behavior increased at night, while the group mean of exploratory behavior remained constant throughout the day. At night, the intra-individual variances were elevated in maintenance MR but reduced in exploration, suggesting that phenotypic plasticity was enhanced in the former but constrained in the latter. In addition, maintenance MR was not coupled with exploratory or risk-taking behaviors in daytime or at night, neither at the inter-individual nor intra-individual levels.
Conclusions
Our findings suggest that these traits are independently modulated by the light/dark phase, and an allocation energy management model may be applicable in this species. This study sheds new insights into how amphibians adapt nocturnal lifestyle across multiple hierarchy levels via metabolic and behavioral adjustments.
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Lartigue S, Yalaoui M, Belliard J, Caravel C, Jeandroz L, Groussier G, Calcagno V, Louâpre P, Dechaume‐Moncharmont F, Malausa T, Moreau J. Consistent variations in personality traits and their potential for genetic improvement in biocontrol agents: Trichogramma evanescens as a case study. Evol Appl 2022; 15:1565-1579. [PMID: 36330304 PMCID: PMC9624082 DOI: 10.1111/eva.13329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/18/2021] [Indexed: 11/30/2022] Open
Abstract
Improvements in the biological control of agricultural pests require improvements in the phenotyping methods used by practitioners to select efficient biological control agent (BCA) populations in industrial rearing or field conditions. Consistent inter-individual variations in behaviour (i.e. animal personality) probably affect BCA efficiency, but have never been taken into account in the development of phenotyping methods, despite having characteristics useful for phenotyping: repeatable (by definition), often heritable, etc. We developed a video-tracking method targeting animal personality traits and evaluated the feasibility of its use for genetic improvement in the BCA Trichogramma evanescens, by phenotyping 1,049 individuals from 24 isogenic lines. We found consistent individual variations in boldness, activity and exploration. Personality differences between the 24 isogenic lines suggested a genetic origin of the variations in activity and exploration (broad-sense heritability estimates of 0.06 to 0.11) and revealed a trade-off between exploration and fecundity.
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Affiliation(s)
- Silène Lartigue
- ENGREF AgroParisTechParisFrance
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
- UMR CNRS 6282 BiogéosciencesUniversité Bourgogne Franche‐ComtéDijonFrance
| | - Myriam Yalaoui
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | - Jean Belliard
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | - Claire Caravel
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | - Louise Jeandroz
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | | | - Vincent Calcagno
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | - Philippe Louâpre
- UMR CNRS 6282 BiogéosciencesUniversité Bourgogne Franche‐ComtéDijonFrance
| | | | - Thibaut Malausa
- UMR Institut Sophia Agrobiotech, INRAE, UCA, CNRSSophia AntipolisFrance
| | - Jérôme Moreau
- UMR CNRS 6282 BiogéosciencesUniversité Bourgogne Franche‐ComtéDijonFrance
- Centre d'Études Biologiques de ChizéUMR 7372, CNRS & La Rochelle UniversitéVilliers‐en‐boisFrance
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Plantamp C, Henri H, Andrieux T, Regis C, Mialdea G, Dray S, Gibert P, Desouhant E. Phenotypic plasticity in the invasive pest Drosophila suzukii: activity rhythms and gene expression in response to temperature. J Exp Biol 2019; 222:jeb.199398. [DOI: 10.1242/jeb.199398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/07/2019] [Indexed: 11/20/2022]
Abstract
Phenotypic plasticity may contribute to the invasive success of an alien species in a new environment. A higher plastic species may survive and reproduce in more diverse environments, thereby supporting establishment and colonization. We focused on plasticity in the circadian rhythm of activity, which can favour species coexistence in invasion, for the invasive species Drosophila suzukii, which is expected to be a weaker direct competitor than other Drosophila species of the resident community. We compared between the invasive D. suzukii and the resident D. melanogaster the circadian rhythms of the locomotor activity in adults and the expression of clock genes in response to temperature. We showed that D. suzukii is active in a narrower range of temperatures than D. melanogaster and that the activities of both species overlap during the day, regardless of the temperature. Both species are diurnal and exhibit rhythmic activity at dawn and dusk, with a much lower activity at dawn for D. suzukii females. Our results showed that the timeless and clock genes are good candidates to explain the plastic response that is observed in relation to temperature. Overall, our results suggest that thermal phenotypic plasticity in D. suzukii activity is not sufficient to explain the invasive success of D. suzukii and calls for testing other hypotheses, such as the release of competitors and/or predators.
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Affiliation(s)
- C. Plantamp
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - H. Henri
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - T. Andrieux
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - C. Regis
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - G. Mialdea
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - S. Dray
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - P. Gibert
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - E. Desouhant
- Université de Lyon, 69000 Lyon, Université Claude Bernard Lyon 1, CNRS, VetAgro Sup, INRIA, Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
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