Damien Gergonne, Chantal Poteaux, Yoan Fourcade, Romain Fougeyrollas, Robert Hanus, David Sillam‐Dussès, Virginie Roy
{"title":"苏里南和法属圭亚那不断变化的地貌在食土白蚁扩散中的作用","authors":"Damien Gergonne, Chantal Poteaux, Yoan Fourcade, Romain Fougeyrollas, Robert Hanus, David Sillam‐Dussès, Virginie Roy","doi":"10.1111/icad.12761","DOIUrl":null,"url":null,"abstract":"<jats:list> <jats:list-item>Neotropical forest ecosystems harbour significant biodiversity. To develop effective insect conservation practices, it is important to understand the factors that influence the diversity and population structure of the species.</jats:list-item> <jats:list-item>Dispersal, a key determinant of population structure, is well studied in termites nesting in wood, for which it can be influenced by wood transport, or in termites living in urban environments. However, understanding the dispersal of termites whose mobility remains unaffected by wood transport remains understudied.</jats:list-item> <jats:list-item>We investigated the dispersal of <jats:italic>Embiratermes neotenicus</jats:italic>, a soil‐feeding species with short dispersal distance, in the Neotropical region, where both intact and degraded forests exist. Using mitochondrial and nuclear data, we analysed genetic diversity, structure and factors contributing to population differentiation in Suriname and French Guiana at multiple scales for 70 colonies.</jats:list-item> <jats:list-item>The population in French Guiana is the ancestral population in the region that subsequently expanded.</jats:list-item> <jats:list-item>Significant genetic differentiation between populations was observed, with distinct patterns identified in Suriname and French Guiana. The Suriname population showed higher genetic diversity and no subpopulation differentiation, whereas the French Guiana population showed substructure into distinct genetic clusters.</jats:list-item> <jats:list-item>Analyses at the scale of all colonies suggest the influence of landscape features, such as the Maroni River, on genetic differentiation. At the local scale, genetic differentiation between colonies increases with forest alteration, even when this does not include major changes in forest cover.</jats:list-item> <jats:list-item>Our results highlight the sensitivity of soil‐feeding termite populations to habitat change. We argue that multi‐scale studies are needed for a comprehensive understanding of genetic patterns, especially for species with short dispersal distances.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.2000,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The role of changing landscape in the dispersal of a soil‐feeding termite in Suriname and French Guiana\",\"authors\":\"Damien Gergonne, Chantal Poteaux, Yoan Fourcade, Romain Fougeyrollas, Robert Hanus, David Sillam‐Dussès, Virginie Roy\",\"doi\":\"10.1111/icad.12761\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<jats:list> <jats:list-item>Neotropical forest ecosystems harbour significant biodiversity. To develop effective insect conservation practices, it is important to understand the factors that influence the diversity and population structure of the species.</jats:list-item> <jats:list-item>Dispersal, a key determinant of population structure, is well studied in termites nesting in wood, for which it can be influenced by wood transport, or in termites living in urban environments. However, understanding the dispersal of termites whose mobility remains unaffected by wood transport remains understudied.</jats:list-item> <jats:list-item>We investigated the dispersal of <jats:italic>Embiratermes neotenicus</jats:italic>, a soil‐feeding species with short dispersal distance, in the Neotropical region, where both intact and degraded forests exist. Using mitochondrial and nuclear data, we analysed genetic diversity, structure and factors contributing to population differentiation in Suriname and French Guiana at multiple scales for 70 colonies.</jats:list-item> <jats:list-item>The population in French Guiana is the ancestral population in the region that subsequently expanded.</jats:list-item> <jats:list-item>Significant genetic differentiation between populations was observed, with distinct patterns identified in Suriname and French Guiana. The Suriname population showed higher genetic diversity and no subpopulation differentiation, whereas the French Guiana population showed substructure into distinct genetic clusters.</jats:list-item> <jats:list-item>Analyses at the scale of all colonies suggest the influence of landscape features, such as the Maroni River, on genetic differentiation. At the local scale, genetic differentiation between colonies increases with forest alteration, even when this does not include major changes in forest cover.</jats:list-item> <jats:list-item>Our results highlight the sensitivity of soil‐feeding termite populations to habitat change. 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The role of changing landscape in the dispersal of a soil‐feeding termite in Suriname and French Guiana
Neotropical forest ecosystems harbour significant biodiversity. To develop effective insect conservation practices, it is important to understand the factors that influence the diversity and population structure of the species.Dispersal, a key determinant of population structure, is well studied in termites nesting in wood, for which it can be influenced by wood transport, or in termites living in urban environments. However, understanding the dispersal of termites whose mobility remains unaffected by wood transport remains understudied.We investigated the dispersal of Embiratermes neotenicus, a soil‐feeding species with short dispersal distance, in the Neotropical region, where both intact and degraded forests exist. Using mitochondrial and nuclear data, we analysed genetic diversity, structure and factors contributing to population differentiation in Suriname and French Guiana at multiple scales for 70 colonies.The population in French Guiana is the ancestral population in the region that subsequently expanded.Significant genetic differentiation between populations was observed, with distinct patterns identified in Suriname and French Guiana. The Suriname population showed higher genetic diversity and no subpopulation differentiation, whereas the French Guiana population showed substructure into distinct genetic clusters.Analyses at the scale of all colonies suggest the influence of landscape features, such as the Maroni River, on genetic differentiation. At the local scale, genetic differentiation between colonies increases with forest alteration, even when this does not include major changes in forest cover.Our results highlight the sensitivity of soil‐feeding termite populations to habitat change. We argue that multi‐scale studies are needed for a comprehensive understanding of genetic patterns, especially for species with short dispersal distances.
期刊介绍:
To publish papers of the highest scientific quality within the general area of insect (and other arthropods) conservation and diversity covering topics ranging from ecological theory to practical management.
Papers are invited on the following topics: Conservation genetics; Extinction debt; Long-term conservation planning and implementation; Global implications of local or national conservation actions; Management responses of species and communities; Captive breeding programs; Comparisons of restored and natural habitats; Biogeography; Global biodiversity; Metapopulation dynamics; Climate change: impacts on distributions and range; Invasive species: impacts and control; Effects of pollution; Genetic threats to diversity by introgression; Effects of fragmentation on diversity and distribution; Impact of agricultural and forestry practices on biodiversity; Enhancing urban environments for diversity and protection; Biodiversity action plans: can we scale up from insects?; Effectiveness and choice of indicator species; Soil biodiversity and interactions with above-ground biodiversity; Ecological interactions at local levels; Ecological and evolutionary factors influencing diversity and local, regional and global scales; Sustainable livelihoods and training on the ground; Integrating science and policy.