Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction
Many scolytine beetle species have been expanding in new territories, travelling with wood and plants for planting, sometimes with a high impact on plant health. Here, we attempt to quantify the mobility of these species and to identify the biological drivers of mobility and impact. Mobility was est...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2023-05-01
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| Series: | NeoBiota |
| Online Access: | https://neobiota.pensoft.net/article/89826/download/pdf/ |
| _version_ | 1797823316433567744 |
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| author | Jean-Claude Grégoire Hervé Jactel Jiri Hulcr Andrea Battisti Daegan Inward Françoise Petter Fabienne Grousset |
| author_facet | Jean-Claude Grégoire Hervé Jactel Jiri Hulcr Andrea Battisti Daegan Inward Françoise Petter Fabienne Grousset |
| author_sort | Jean-Claude Grégoire |
| collection | DOAJ |
| description | Many scolytine beetle species have been expanding in new territories, travelling with wood and plants for planting, sometimes with a high impact on plant health. Here, we attempt to quantify the mobility of these species and to identify the biological drivers of mobility and impact. Mobility was estimated by counting the numbers of landmasses (contiguous pieces of land, surrounded by ocean or sea) colonised by each species. A series of potential drivers (taxonomic tribes; feeding regimes; polyphagy; reproductive strategy; host taxa; aggregation pheromones and long-range primary attractants), as well as impact on host health were recorded. A total of 163 species were identified, out of 5546 counted in the whole subfamily. The cosmopolitan taxa amongst the subfamily showed significant disharmony with regards to invasion frequency. Four tribes (Xyleborini; Ipini; Crypturgini; Hylastini) were significantly over-represented and two others (Corthylini; Hexacolini) were under-represented. Some 53% of the 163 species are inbreeding, a very significant excess as compared to the whole subfamily (29%). The inbreeders colonised more landmasses than the outbreeders. There is a significant relationship between the number of host families attacked by a species and the number of colonised landmasses. Most of the invasive species are recorded to respond to long-range host primary attractants, only one quarter respond to pheromones. All very mobile species respond to long-range primary attractants and none is known to respond to pheromones. Very mobile species are all associated with a substantial or moderate impact. The most mobile species belong to a limited number of subtribes. They are often inbreeding, polyphagous and respond to long-range primary attractants, but do not produce pheromones. However, there are many counter-examples. The outbreeding Scolytus multistriatus attacks only three host families, producing aggregation pheromones and has established in thirteen landmasses, with a high impact. Due to these many exceptions, species-based risk prediction relying on the few traits routinely analysed in literature suffers from important uncertainties. |
| first_indexed | 2024-03-13T10:22:17Z |
| format | Article |
| id | doaj.art-e4b1a6677dcd40bcb2ba214a605eebd3 |
| institution | Directory Open Access Journal |
| issn | 1314-2488 |
| language | English |
| last_indexed | 2024-03-13T10:22:17Z |
| publishDate | 2023-05-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | NeoBiota |
| spelling | doaj.art-e4b1a6677dcd40bcb2ba214a605eebd32023-05-20T08:11:10ZengPensoft PublishersNeoBiota1314-24882023-05-01848110510.3897/neobiota.84.8982689826Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate predictionJean-Claude Grégoire0Hervé Jactel1Jiri Hulcr2Andrea Battisti3Daegan Inward4Françoise Petter5Fabienne Grousset6Université Libre de BruxellesINRAE, University of BordeauxUniversity of FloridaUniversity of PadovaForest ResearchEuropean and Mediterranean Plant Protection OrganizationEuropean and Mediterranean Plant Protection OrganizationMany scolytine beetle species have been expanding in new territories, travelling with wood and plants for planting, sometimes with a high impact on plant health. Here, we attempt to quantify the mobility of these species and to identify the biological drivers of mobility and impact. Mobility was estimated by counting the numbers of landmasses (contiguous pieces of land, surrounded by ocean or sea) colonised by each species. A series of potential drivers (taxonomic tribes; feeding regimes; polyphagy; reproductive strategy; host taxa; aggregation pheromones and long-range primary attractants), as well as impact on host health were recorded. A total of 163 species were identified, out of 5546 counted in the whole subfamily. The cosmopolitan taxa amongst the subfamily showed significant disharmony with regards to invasion frequency. Four tribes (Xyleborini; Ipini; Crypturgini; Hylastini) were significantly over-represented and two others (Corthylini; Hexacolini) were under-represented. Some 53% of the 163 species are inbreeding, a very significant excess as compared to the whole subfamily (29%). The inbreeders colonised more landmasses than the outbreeders. There is a significant relationship between the number of host families attacked by a species and the number of colonised landmasses. Most of the invasive species are recorded to respond to long-range host primary attractants, only one quarter respond to pheromones. All very mobile species respond to long-range primary attractants and none is known to respond to pheromones. Very mobile species are all associated with a substantial or moderate impact. The most mobile species belong to a limited number of subtribes. They are often inbreeding, polyphagous and respond to long-range primary attractants, but do not produce pheromones. However, there are many counter-examples. The outbreeding Scolytus multistriatus attacks only three host families, producing aggregation pheromones and has established in thirteen landmasses, with a high impact. Due to these many exceptions, species-based risk prediction relying on the few traits routinely analysed in literature suffers from important uncertainties.https://neobiota.pensoft.net/article/89826/download/pdf/ |
| spellingShingle | Jean-Claude Grégoire Hervé Jactel Jiri Hulcr Andrea Battisti Daegan Inward Françoise Petter Fabienne Grousset Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction NeoBiota |
| title | Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction |
| title_full | Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction |
| title_fullStr | Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction |
| title_full_unstemmed | Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction |
| title_short | Cosmopolitan Scolytinae: strong common drivers, but too many singularities for accurate prediction |
| title_sort | cosmopolitan scolytinae strong common drivers but too many singularities for accurate prediction |
| url | https://neobiota.pensoft.net/article/89826/download/pdf/ |
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