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Tougeron K, van Baaren J, Town J, Nordin D, Dumonceaux T, Wist T. Body-color plasticity of the English grain aphid in response to light in both laboratory and field conditions. Evol Ecol 2020. [DOI: 10.1007/s10682-020-10088-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tougeron K, Devogel M, van Baaren J, Le Lann C, Hance T. Trans-generational effects on diapause and life-history-traits of an aphid parasitoid. J Insect Physiol 2020; 121:104001. [PMID: 31874137 DOI: 10.1016/j.jinsphys.2019.104001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 12/09/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Transgenerational effects act on a wide range of insects' life-history traits and can be involved in the control of developmental plasticity, such as diapause expression. Decrease in or total loss of winter diapause expression recently observed in some species could arise from inhibiting maternal effects. In this study, we explored transgenerational effects on diapause expression and traits in one commercial and one Canadian field strain of the aphid parasitoid Aphidius ervi. These strains were reared under short photoperiod (8:16 h LD) and low temperature (14 °C) conditions over two generations. Diapause levels, developmental times, physiological and morphological traits were measured. Diapause levels increased after one generation in the Canadian field but not in the commercial strain. For both strains, the second generation took longer to develop than the first one. Tibia length and wing surface decreased over generations while fat content increased. A crossed-generations experiment focusing on the industrial parasitoid strain showed that offspring from mothers reared at 14 °C took longer to develop, were heavier, taller with wider wings and with more fat reserves than those from mothers reared at 20 °C (8:16 h LD). No effect of the mother rearing conditions was shown on diapause expression. Additionally to direct plasticity of the offspring, results suggest transgenerational plasticity effects on diapause expression, development time, and on the values of life-history traits. We demonstrated that populations showing low diapause levels may recover higher levels through transgenerational plasticity in response to diapause-induction cues, provided that environmental conditions are reaching the induction-thresholds specific to each population. Transgenerational plasticity is thus important to consider when evaluating how insects adapt to changing environments.
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Affiliation(s)
- K Tougeron
- Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal, 4101, Sherbrooke Est, Montréal, Québec H1X 2B2, Canada; Univ Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35000 Rennes, France; Earth and Life Institute, Centre de recherche sur la biodiversité, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium.
| | - M Devogel
- Univ Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35000 Rennes, France; Earth and Life Institute, Centre de recherche sur la biodiversité, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - J van Baaren
- Univ Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35000 Rennes, France
| | - C Le Lann
- Univ Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35000 Rennes, France
| | - T Hance
- Earth and Life Institute, Centre de recherche sur la biodiversité, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
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Moiroux J, Delava E, Fleury F, van Baaren J. Local adaptation of a Drosophila
parasitoid: habitat-specific differences in thermal reaction norms. J Evol Biol 2013; 26:1108-16. [DOI: 10.1111/jeb.12122] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/04/2013] [Accepted: 01/07/2013] [Indexed: 11/30/2022]
Affiliation(s)
- J. Moiroux
- Equipe Paysaclim; UMR CNRS 6553; Université Rennes 1; Rennes France
| | - E. Delava
- Laboratoire de Biométrie et Biologie Evolutive; UMR CNRS 5558; Université Lyon 1; Villeurbanne France
| | - F. Fleury
- Laboratoire de Biométrie et Biologie Evolutive; UMR CNRS 5558; Université Lyon 1; Villeurbanne France
| | - J. van Baaren
- Equipe Paysaclim; UMR CNRS 6553; Université Rennes 1; Rennes France
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Louâpre P, van Baaren J, Pierre J, van Alphen J. Information gleaned and former patch quality determine foraging behavior of parasitic wasps. Behav Ecol 2011. [DOI: 10.1093/beheco/arr090] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Le Lann C, Outreman Y, van Alphen J, van Baaren J. First in, last out: asymmetric competition influences patch exploitation of a parasitoid. Behav Ecol 2010. [DOI: 10.1093/beheco/arq180] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Roux O, Le Lann C, van Alphen JJM, van Baaren J. How does heat shock affect the life history traits of adults and progeny of the aphid parasitoid Aphidius avenae (Hymenoptera: Aphidiidae)? Bull Entomol Res 2010; 100:543-9. [PMID: 20102660 DOI: 10.1017/s0007485309990575] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Because insects are ectotherms, their physiology, behaviour and fitness are influenced by the ambient temperature. Any changes in environmental temperatures may impact the fitness and life history traits of insects and, thus, affect population dynamics. Here, we experimentally tested the impact of heat shock on the fitness and life history traits of adults of the aphid parasitoid Aphidius avenae and on the later repercussions for their progeny. Our results show that short exposure (1 h) to an elevated temperature (36 degrees C), which is frequently experienced by parasitoids during the summer, resulted in high mortality rates in a parasitoid population and strongly affected the fitness of survivors by drastically reducing reproductive output and triggering a sex-dependent effect on lifespan. Heat stress resulted in greater longevity in surviving females and in shorter longevity in surviving males in comparison with untreated individuals. Viability and the developmental rates of progeny were also affected in a sex-dependent manner. These results underline the ecological importance of the thermal stress response of parasitoid species, not only for survival, but also for maintaining reproductive activities.
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Affiliation(s)
- O Roux
- Laboratoire d'Ecologie Fonctionnelle, UMR 5245 CNRS-UPS-INPT, Université Paul Sabatier, 31062 Toulouse cedex 04, France.
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van Baaren J, Le Lann C, Pichenot J, Pierre JS, Krespi L, Outreman Y. How could host discrimination abilities influence the structure of a parasitoid community? Bull Entomol Res 2009; 99:299-306. [PMID: 19063755 DOI: 10.1017/s0007485308006342] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Three related Aphidius parasitoid species share the same host, the grain aphid Sitobion avenae. Among this parasitoid community, Aphidius rhopalosiphi is the most abundant species in the field. Both the interspecific host discrimination of A. rhopalosiphi towards hosts parasitized by the two other species (i.e. A. avenae and A. ervi) and the interspecific host discrimination of the two other species towards hosts parasitized by A. rhopalosiphi were studied here. Results showed that females of A. rhopalosiphi and A. avenae both discriminated between unparasitized hosts and hosts parasitized by the other species. This discrimination occurred only after ovipositor insertion, suggesting the perception of an internal marker of parasitism. Likewise, females of A. rhopalosiphi and A. ervi were able to discriminate between unparasitized hosts and hosts parasitized by the other species. However, in this combination of species, recognition of parasitized hosts occurred before ovipositor insertion, through an antennal perception, suggesting the presence an external cue indicating parasitism. Hence, interspecific host discrimination in the three Aphidius species is based on internal or external cues, which are used either alone or together. Our results showed that the cues used for interspecific host discrimination depend on the specific identity of the interaction. These differences seemed strongly linked to the way the different species respond to defensive behaviours of their aphid hosts. Results are discussed in the context of optimal foraging and possible consequences for community structure.
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Affiliation(s)
- J van Baaren
- UMR 1099 INRA-Agrocampus Ouest-Université Rennes I, Avenue du Général Leclerc, 35042 Rennes cedex, France.
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Boivin G, van Baaren J. The role of larval aggression and mobility in the transition between solitary and gregarious development in parasitoid wasps. Ecol Lett 2000. [DOI: 10.1046/j.1461-0248.2000.00174.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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van Baaren J, Boivin G, Le Lannic J, Nénon JP. The male and female first instar larvae of Anaphes victus and A. listronoti (Hymenoptera, Mymaridae). ZOOMORPHOLOGY 1997. [DOI: 10.1007/s004350050044] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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