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Wos G, Palomar G, Golab MJ, Marszałek M, Sniegula S. Effects of overwintering on the transcriptome and fitness traits in a damselfly with variable voltinism across two latitudes. Sci Rep 2024; 14:12192. [PMID: 38806592 PMCID: PMC11133422 DOI: 10.1038/s41598-024-63066-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 05/24/2024] [Indexed: 05/30/2024] Open
Abstract
Winter diapause consists of cessation of development that allows individuals to survive unfavourable conditions. Winter diapause may bear various costs and questions have been raised about the evolutionary mechanisms maintaining facultative diapause. Here, we explored to what extent a facultative winter diapause affects life-history traits and the transcriptome in the damselfly Ischnura elegans, and whether these effects were latitude-specific. We collected adult females at central and high latitudes and raised their larvae in growth chambers. Larvae were split into a non-diapausing and post-winter (diapausing) cohort, were phenotyped and collected for a gene expression analysis. At the phenotypic level, we found no difference in survival between the two cohorts, and the post-winter cohort was larger and heavier than the non-winter cohort. These effects were mostly independent of the latitude of origin. At the transcriptomic level, wintering affected gene expression with a small fraction of genes significantly overlapping across latitudes, especially those related to morphogenesis. In conclusion, we found clear effects of diapause on the phenotype but little evidence for latitudinal-specific effects of diapause. Our results showed a shared transcriptomic basis underpinning diapause demonstrated, here, at the intraspecific level and supported the idea of evolutionary convergence of the response to diapause across organisms.
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Affiliation(s)
- Guillaume Wos
- Institute of Nature Conservation Polish Academy of Sciences, Al. Adama Mickiewicza 33, 31-120, Kraków, Poland.
| | - Gemma Palomar
- Institute of Nature Conservation Polish Academy of Sciences, Al. Adama Mickiewicza 33, 31-120, Kraków, Poland
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, José Antonio Novais, 12, 28040, Madrid, Spain
| | - Maria J Golab
- Institute of Nature Conservation Polish Academy of Sciences, Al. Adama Mickiewicza 33, 31-120, Kraków, Poland
| | - Marzena Marszałek
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Szymon Sniegula
- Institute of Nature Conservation Polish Academy of Sciences, Al. Adama Mickiewicza 33, 31-120, Kraków, Poland.
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Schebeck M, Lehmann P, Laparie M, Bentz BJ, Ragland GJ, Battisti A, Hahn DA. Seasonality of forest insects: why diapause matters. Trends Ecol Evol 2024:S0169-5347(24)00110-1. [PMID: 38777634 DOI: 10.1016/j.tree.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/25/2024]
Abstract
Insects have major impacts on forest ecosystems, from herbivory and soil-nutrient cycling to killing trees at a large scale. Forest insects from temperate, tropical, and subtropical regions have evolved strategies to respond to seasonality; for example, by entering diapause, to mitigate adversity and to synchronize lifecycles with favorable periods. Here, we show that distinct functional groups of forest insects; that is, canopy dwellers, trunk-associated species, and soil/litter-inhabiting insects, express a variety of diapause strategies, but do not show systematic differences in diapause strategy depending on functional group. Due to the overall similarities in diapause strategies, we can better estimate the impacts of anthropogenic change on forest insect populations and, consequently, on key ecosystems.
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Affiliation(s)
- Martin Schebeck
- Institute of Forest Entomology, Forest Pathology and Forest Protection, Department of Forest and Soil Sciences, BOKU University, A-1190 Vienna, Austria.
| | - Philipp Lehmann
- Department of Animal Physiology, Zoological Institute and Museum, University of Greifswald, D-17489 Greifswald, Germany; Department of Zoology, Stockholm University, SE-10691 Stockholm, Sweden; Bolin Centre for Climate Research, SE-10691 Stockholm, Sweden
| | | | - Barbara J Bentz
- US Department of Agriculture, Forest Service, Rocky Mountain Research Station, Logan, UT 84321, USA
| | - Gregory J Ragland
- Department of Integrative Biology, University of Colorado-Denver, Denver, CO 80204, USA
| | - Andrea Battisti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, I-35020 Legnaro, Italy
| | - Daniel A Hahn
- Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611-0620, USA
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Lehmanski LMA, Kandasamy D, Andersson MN, Netherer S, Alves EG, Huang J, Hartmann H. Addressing a century-old hypothesis - do pioneer beetles of Ips typographus use volatile cues to find suitable host trees? THE NEW PHYTOLOGIST 2023; 238:1762-1770. [PMID: 36880374 DOI: 10.1111/nph.18865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 03/01/2023] [Indexed: 05/04/2023]
Abstract
Global warming and more frequent climate extremes have caused bark beetle outbreaks of unprecedented scale of these insects in many conifer forests world-wide. Conifers that have been weakened by drought and heat or damaged by storms are highly susceptible to bark beetle infestation. A large proportion of trees with impaired defences provides good conditions for beetle population build-up of beetles, but mechanisms driving host search of pioneer beetles are still uncertain in several species, including the Eurasian spruce bark beetle Ips typographus. Despite a two-century-long history of bark beetle research, we still lack a sufficient understanding of interactions between I. typographus and its host Norway spruce (Picea abies) to forecast future disturbance regimes and forest dynamics. Depending on the scale (habitat or patch) and beetle population state (endemic or epidemic), host selection is likely driven by a combination of pre and postlanding cues, including visual selection or olfactory detection (kairomones). Here, we discuss primary attraction mechanisms and how volatile emission profiles of Norway spruce may provide cues on tree vitality and suitability for attacks by I. typographus, in particular during the endemic phase. We identify several crucial knowledge gaps and provide a research agenda addressing the experimental challenges of such investigations.
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Affiliation(s)
- Linda M A Lehmanski
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
| | - Dineshkumar Kandasamy
- Department of Biology, Lund University, Lund, 22362, Sweden
- Max Planck Center for Next Generation Insect Chemical Ecology (nGICE), Department of Biology, Lund University, Lund, 22362, Sweden
| | - Martin N Andersson
- Department of Biology, Lund University, Lund, 22362, Sweden
- Max Planck Center for Next Generation Insect Chemical Ecology (nGICE), Department of Biology, Lund University, Lund, 22362, Sweden
| | - Sigrid Netherer
- Institute of Forest Entomology, Forest Pathology and Forest Protection, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, BOKU, Vienna, 1190, Austria
| | - Eliane Gomes Alves
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
| | - Jianbei Huang
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
| | - Henrik Hartmann
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
- Institute for Forest Protection, Julius Kühn-Institute Federal Research Centre for Cultivated Plants, Quedlinburg, 06484, Germany
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Schebeck M, Schopf A, Ragland GJ, Stauffer C, Biedermann PHW. Evolutionary ecology of the bark beetles Ips typographus and Pityogenes chalcographus. BULLETIN OF ENTOMOLOGICAL RESEARCH 2023; 113:1-10. [PMID: 36239260 DOI: 10.1017/s0007485321000353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Ips typographus (L.) and Pityogenes chalcographus (L.) (Coleoptera: Curculionidae) are two common bark beetle species on Norway spruce in Eurasia. Multiple biotic and abiotic factors affect the life cycles of these two beetles, shaping their ecology and evolution. In this article, we provide a comprehensive and comparative summary of selected life-history traits. We highlight similarities and differences in biotic factors, like host range, interspecific competition, host colonization, reproductive behaviour and fungal symbioses. Moreover, we focus on the species' responses to abiotic factors and compare their temperature-dependent development and flight behaviour, cold adaptations and diapause strategies. Differences in biotic and abiotic traits might be the result of recent, species-specific evolutionary histories, particularly during the Pleistocene, with differences in glacial survival and postglacial recolonization. Finally, we discuss future research directions to understand ecological and evolutionary pathways of the two bark beetle species, for both basic research and applied forest management.
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Affiliation(s)
- Martin Schebeck
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, BOKU, Vienna, Austria
| | - Axel Schopf
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, BOKU, Vienna, Austria
| | - Gregory J Ragland
- Department of Integrative Biology, University of Colorado - Denver, Denver, CO, USA
| | - Christian Stauffer
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, BOKU, Vienna, Austria
| | - Peter H W Biedermann
- Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
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Numata H, Shintani Y. Diapause in Univoltine and Semivoltine Life Cycles. ANNUAL REVIEW OF ENTOMOLOGY 2023; 68:257-276. [PMID: 36198404 DOI: 10.1146/annurev-ento-120220-101047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Although it is generally more adaptive for insects to produce additional generations than to have longer life cycles, some insects produce one or fewer generations per year (univoltine or semivoltine life cycles, respectively). Some insects with the potential to produce multiple generations per year produce a univoltine life cycle in response to environmental conditions. Obligatory univoltine insects have a single long diapause or multiple diapauses in different seasons. Semivoltine insects have multiple diapauses in different years, a prolonged diapause for more than a year, or diapause controlled by a circannual rhythm. Diapause in these insects greatly varies among species both in the physiological mechanism and in the evolutionary background, and there is no general rule defining it. In this review, we survey the physiological control of univoltine and semivoltine insects' diapause and discuss the adaptive significance of the long life cycles. Although constraints such as slow development are sometimes responsible for these life cycles, the benefits of these life cycles can be explained by bet-hedging in many cases. We also discuss the effect of climate warming on these life cycles as a future area of research.
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Affiliation(s)
- Hideharu Numata
- Institute for the Future of Human Society, Kyoto University, Kyoto, Japan;
| | - Yoshinori Shintani
- Laboratory of Entomology, Department of Environmental and Horticultural Sciences, Minami Kyushu University, Miyakonojo, Japan;
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