Direct competition and potential displacement involving managed Trogoderma stored product pests
Abstract The establishment of an exotic pest may require displacing local species with a similar niche. The potential of Trogoderma granarium to displace Trogoderma inclusum was explored in a stored product setting. We performed direct competition experiments varying commodity and temperature over d...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-30618-8 |
| _version_ | 1797864730771062784 |
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| author | Michael J. Domingue Yunke Wu Kendra A. Vieira Alana R. McGraw Mandy Furtado Christos G. Athanassiou William R. Morrison Scott W. Myers |
| author_facet | Michael J. Domingue Yunke Wu Kendra A. Vieira Alana R. McGraw Mandy Furtado Christos G. Athanassiou William R. Morrison Scott W. Myers |
| author_sort | Michael J. Domingue |
| collection | DOAJ |
| description | Abstract The establishment of an exotic pest may require displacing local species with a similar niche. The potential of Trogoderma granarium to displace Trogoderma inclusum was explored in a stored product setting. We performed direct competition experiments varying commodity and temperature over different durations. At nine weeks T. inclusum outproduced T. granarium on all commodities at any temperature. However the proportion of T. granarium versus T. inclusum was greater at 32 °C compared to 25 °C. The nine-week production of T. granarium was best on wheat, while rice was optimal for T. inclusum. After 25 weeks, when adults were used at the start of competition, T. inclusum maintained an advantage in the direct competition. If larvae were used to initiate the competition for 25 weeks, the two species coexisted well at 25 °C, but T. granarium nearly excluded T. inclusum at 32 °C. Thus T. inclusum performs better in competition over shorter intervals when resources are plentiful, but T. granarium can be more successful over longer time periods, particularly when late instar larvae are involved. The finding suggests a real threat of introductions of T. granarium larvae to establish populations within grain storage infrastructure where T. inclusum is common. |
| first_indexed | 2024-04-09T22:56:49Z |
| format | Article |
| id | doaj.art-efe6b35670a54764b0842f62146526ea |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T22:56:49Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-efe6b35670a54764b0842f62146526ea2023-03-22T11:14:08ZengNature PortfolioScientific Reports2045-23222023-03-0113111110.1038/s41598-023-30618-8Direct competition and potential displacement involving managed Trogoderma stored product pestsMichael J. Domingue0Yunke Wu1Kendra A. Vieira2Alana R. McGraw3Mandy Furtado4Christos G. Athanassiou5William R. Morrison6Scott W. Myers7United States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyUnited States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyUnited States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyUnited States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyUnited States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyLaboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of ThessalyDepartment of Agriculture, Agricultural Research Service, Center for Grain and Animal Health ResearchUnited States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and TechnologyAbstract The establishment of an exotic pest may require displacing local species with a similar niche. The potential of Trogoderma granarium to displace Trogoderma inclusum was explored in a stored product setting. We performed direct competition experiments varying commodity and temperature over different durations. At nine weeks T. inclusum outproduced T. granarium on all commodities at any temperature. However the proportion of T. granarium versus T. inclusum was greater at 32 °C compared to 25 °C. The nine-week production of T. granarium was best on wheat, while rice was optimal for T. inclusum. After 25 weeks, when adults were used at the start of competition, T. inclusum maintained an advantage in the direct competition. If larvae were used to initiate the competition for 25 weeks, the two species coexisted well at 25 °C, but T. granarium nearly excluded T. inclusum at 32 °C. Thus T. inclusum performs better in competition over shorter intervals when resources are plentiful, but T. granarium can be more successful over longer time periods, particularly when late instar larvae are involved. The finding suggests a real threat of introductions of T. granarium larvae to establish populations within grain storage infrastructure where T. inclusum is common.https://doi.org/10.1038/s41598-023-30618-8 |
| spellingShingle | Michael J. Domingue Yunke Wu Kendra A. Vieira Alana R. McGraw Mandy Furtado Christos G. Athanassiou William R. Morrison Scott W. Myers Direct competition and potential displacement involving managed Trogoderma stored product pests Scientific Reports |
| title | Direct competition and potential displacement involving managed Trogoderma stored product pests |
| title_full | Direct competition and potential displacement involving managed Trogoderma stored product pests |
| title_fullStr | Direct competition and potential displacement involving managed Trogoderma stored product pests |
| title_full_unstemmed | Direct competition and potential displacement involving managed Trogoderma stored product pests |
| title_short | Direct competition and potential displacement involving managed Trogoderma stored product pests |
| title_sort | direct competition and potential displacement involving managed trogoderma stored product pests |
| url | https://doi.org/10.1038/s41598-023-30618-8 |
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