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Rocha S, Caldeira MC, Burban C, Kerdelhué C, Branco M. Shifted phenology in the pine processionary moth affects the outcome of tree-insect interaction. BULLETIN OF ENTOMOLOGICAL RESEARCH 2020; 110:68-76. [PMID: 31190650 DOI: 10.1017/s0007485319000282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the Mediterranean and temperate regions, an increase in the frequency and intensity of drought events has been recorded, probably due to climate change. In consequence, trees will more frequently experience hydric stress, a condition that can be expected to affect insect-tree interactions, while adaptation mechanisms may be further in course. The effect of tree water stress on the performance of two allochronic populations of Thaumetopoea pityocampa was here studied. Namely, we compared a unique population of this insect, in which the larvae develop in the summer (SP), with the typical population having winter larval development (WP), to test the adaptation hypothesis to host plant status. Larvae of each population were fed on needles of young potted Pinus pinaster plants under two water supply regimes: (i) well-watered (control) and (ii) subjected to 3 months of drought stress. Compared to control, stressed plants had higher amounts of soluble sugars, phenols, and higher C/N ratio, whereas water content and chlorophylls concentrations were lower. In general, T. pityocampa larvae had lower performances on water-stressed plants, as shown by lower survival rates, lower needle consumption, and longer development times. Yet, the detrimental effects of tree stress were only significant for the WP larvae, while SP larvae were able to overcome such conditions. Results demonstrate that tree water stress can negatively affect T. pityocampa populations. Furthermore, the evidence is also provided that responses to the physiological condition of the host trees may occur at the population level, as a result of adaptation mechanisms driven by climate change.
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Affiliation(s)
- S Rocha
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - M C Caldeira
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - C Burban
- BIOGECO, INRA, Univ. Bordeaux, 33610 Cestas, France
| | - C Kerdelhué
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier, 34988 Montferriez-sur-Lez, France
| | - M Branco
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
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Gschloessl B, Dorkeld F, Berges H, Beydon G, Bouchez O, Branco M, Bretaudeau A, Burban C, Dubois E, Gauthier P, Lhuillier E, Nichols J, Nidelet S, Rocha S, Sauné L, Streiff R, Gautier M, Kerdelhué C. Draft genome and reference transcriptomic resources for the urticating pine defoliator Thaumetopoea pityocampa (Lepidoptera: Notodontidae). Mol Ecol Resour 2018; 18:602-619. [PMID: 29352511 DOI: 10.1111/1755-0998.12756] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 12/23/2017] [Accepted: 01/03/2018] [Indexed: 12/15/2022]
Abstract
The pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) is the main pine defoliator in the Mediterranean region. Its urticating larvae cause severe human and animal health concerns in the invaded areas. This species shows a high phenotypic variability for various traits, such as phenology, fecundity and tolerance to extreme temperatures. This study presents the construction and analysis of extensive genomic and transcriptomic resources, which are an obligate prerequisite to understand their underlying genetic architecture. Using a well-studied population from Portugal with peculiar phenological characteristics, the karyotype was first determined and a first draft genome of 537 Mb total length was assembled into 68,292 scaffolds (N50 = 164 kb). From this genome assembly, 29,415 coding genes were predicted. To circumvent some limitations for fine-scale physical mapping of genomic regions of interest, a 3X coverage BAC library was also developed. In particular, 11 BACs from this library were individually sequenced to assess the assembly quality. Additionally, de novo transcriptomic resources were generated from various developmental stages sequenced with HiSeq and MiSeq Illumina technologies. The reads were de novo assembled into 62,376 and 63,175 transcripts, respectively. Then, a robust subset of the genome-predicted coding genes, the de novo transcriptome assemblies and previously published 454/Sanger data were clustered to obtain a high-quality and comprehensive reference transcriptome consisting of 29,701 bona fide unigenes. These sequences covered 99% of the cegma and 88% of the busco highly conserved eukaryotic genes and 84% of the busco arthropod gene set. Moreover, 90% of these transcripts could be localized on the draft genome. The described information is available via a genome annotation portal (http://bipaa.genouest.org/sp/thaumetopoea_pityocampa/).
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Affiliation(s)
- B Gschloessl
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - F Dorkeld
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - H Berges
- INRA-CNRGV, Castanet Tolosan Cedex, France
| | - G Beydon
- INRA-CNRGV, Castanet Tolosan Cedex, France
| | - O Bouchez
- INRA, US 1426, GeT-PlaGe, Genotoul, INRA Auzeville, Castanet Tolosan Cedex, France
| | - M Branco
- Forest Research Center (CEF), Instituto Superior de Agronomia (ISA), University of Lisbon (ULisboa), Lisboa, Portugal
| | - A Bretaudeau
- INRA, UMR Institut de Génétique, Environnement et Protection des Plantes (IGEPP), BioInformatics Platform for Agroecosystems Arthropods (BIPAA), Rennes, France.,INRIA, IRISA, GenOuest Core Facility, Rennes, France
| | - C Burban
- BIOGECO, INRA, Univ. Bordeaux, Cestas, France
| | - E Dubois
- Plateforme MGX-Montpellier GenomiX, c/o Institut de Génomique Fonctionnelle IGF-sud, UMR 5203 CNRS-U 661 INSERM-Université de Montpellier, Montpellier Cedex 05, France
| | - P Gauthier
- CBGP, IRD, CIRAD, INRA, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - E Lhuillier
- INRA, US 1426, GeT-PlaGe, Genotoul, INRA Auzeville, Castanet Tolosan Cedex, France
| | - J Nichols
- Edinburgh Genomics, Ashworth Laboratories, The University of Edinburgh, Edinburgh, UK
| | - S Nidelet
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France.,Plateforme MGX-Montpellier GenomiX, c/o Institut de Génomique Fonctionnelle IGF-sud, UMR 5203 CNRS-U 661 INSERM-Université de Montpellier, Montpellier Cedex 05, France
| | - S Rocha
- Forest Research Center (CEF), Instituto Superior de Agronomia (ISA), University of Lisbon (ULisboa), Lisboa, Portugal
| | - L Sauné
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - R Streiff
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - M Gautier
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
| | - C Kerdelhué
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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Leblois R, Gautier M, Rohfritsch A, Foucaud J, Burban C, Galan M, Loiseau A, Sauné L, Branco M, Gharbi K, Vitalis R, Kerdelhué C. Deciphering the demographic history of allochronic differentiation in the pine processionary moth Thaumetopoea pityocampa. Mol Ecol 2017; 27:264-278. [DOI: 10.1111/mec.14411] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/17/2017] [Accepted: 10/25/2017] [Indexed: 01/01/2023]
Affiliation(s)
- R. Leblois
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
- Institut de Biologie Computationnelle (IBC); Université de Montpellier; Montpellier France
| | - M. Gautier
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
- Institut de Biologie Computationnelle (IBC); Université de Montpellier; Montpellier France
| | - A. Rohfritsch
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
| | - J. Foucaud
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
| | - C. Burban
- INRA, UMR1202 BIOGECO (INRA - Université de Bordeaux); Cestas Cedex France
| | - M. Galan
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
| | - A. Loiseau
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
| | - L. Sauné
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
| | - M. Branco
- Centro de Estudos Florestais (CEF); Instituto Superior de Agronomia (ISA); University of Lisbon; Lisbon Portugal
| | - K. Gharbi
- Edinburgh Genomics; School of Biological Sciences; University of Edinburgh; Edinburgh UK
| | - R. Vitalis
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
- Institut de Biologie Computationnelle (IBC); Université de Montpellier; Montpellier France
| | - C. Kerdelhué
- CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ. Montpellier; Montferrier sur Lez Cedex France
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5
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Rocha S, Kerdelhué C, Ben Jamaa ML, Dhahri S, Burban C, Branco M. Effect of heat waves on embryo mortality in the pine processionary moth. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:583-591. [PMID: 28185608 DOI: 10.1017/s0007485317000104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Extreme climate events such as heat waves are predicted to become more frequent with climate change, representing a challenge for many organisms. The pine processionary moth Thaumetopoea pityocampa is a Mediterranean pine defoliator, which typically lays eggs during the summer. We evaluated the effects of heat waves on egg mortality of three populations with different phenologies: a Portuguese population with a classical life cycle (eggs laid in summer), an allochronic Portuguese population reproducing in spring, and a Tunisian population from the extreme southern limit of T. pityocampa distribution range, in which eggs are laid in fall. We tested the influence of three consecutive hot days on egg survival and development time, using either constant (CT) or daily cycling temperatures (DT) with equivalent mean temperatures. Maximum temperatures (T max) used in the experiment ranged from 36 to 48°C for DT and from 30 to 42°C for CT. Heat waves had a severe negative effect on egg survival when T max reached 42°C for all populations. No embryo survived above this threshold. At high mean temperatures (40°C), significant differences were observed between populations and between DT and CT regimes. Heat waves further increased embryo development time. The knowledge we gained about the upper lethal temperature to embryos of this species will permit better prediction of the potential expansion of this insect under different climate warming scenarios.
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Affiliation(s)
- S Rocha
- Centro de Estudos Florestais,Instituto Superior de Agronomia, Universidade de Lisboa,1349-017, Lisboa,Portugal
| | - C Kerdelhué
- INRA Centre de Montpellier, UMR CBGP,F-34988, Montferrier-sur-Lez cedex,France
| | - M L Ben Jamaa
- Université de Carthage, INRGREF,BP 10-2080 Ariana,Tunisie
| | - S Dhahri
- Université de Carthage, INRGREF,BP 10-2080 Ariana,Tunisie
| | - C Burban
- BIOGECO, INRA, Université de Bordeaux,33610 Cestas,France
| | - M Branco
- Centro de Estudos Florestais,Instituto Superior de Agronomia, Universidade de Lisboa,1349-017, Lisboa,Portugal
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