The evolution of invasiveness in garden ants.
It is unclear why some species become successful invaders whilst others fail, and whether invasive success depends on pre-adaptations already present in the native range or on characters evolving de-novo after introduction. Ants are among the worst invasive pests, with Lasius neglectus and its rapid...
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2008
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oai:doaj.org-article:4a2bbeff54a145ce87841a5307e1ffdf2021-11-25T06:18:20ZThe evolution of invasiveness in garden ants.1932-620310.1371/journal.pone.0003838https://doaj.org/article/4a2bbeff54a145ce87841a5307e1ffdf2008-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19050762/?tool=EBIhttps://doaj.org/toc/1932-6203It is unclear why some species become successful invaders whilst others fail, and whether invasive success depends on pre-adaptations already present in the native range or on characters evolving de-novo after introduction. Ants are among the worst invasive pests, with Lasius neglectus and its rapid spread through Europe and Asia as the most recent example of a pest ant that may become a global problem. Here, we present the first integrated study on behavior, morphology, population genetics, chemical recognition and parasite load of L. neglectus and its non-invasive sister species L. turcicus. We find that L. neglectus expresses the same supercolonial syndrome as other invasive ants, a social system that is characterized by mating without dispersal and large networks of cooperating nests rather than smaller mutually hostile colonies. We conclude that the invasive success of L. neglectus relies on a combination of parasite-release following introduction and pre-adaptations in mating system, body-size, queen number and recognition efficiency that evolved long before introduction. Our results challenge the notion that supercolonial organization is an inevitable consequence of low genetic variation for chemical recognition cues in small invasive founder populations. We infer that low variation and limited volatility in cuticular hydrocarbon profiles already existed in the native range in combination with low dispersal and a highly viscous population structure. Human transport to relatively disturbed urban areas thus became the decisive factor to induce parasite release, a well established general promoter of invasiveness in non-social animals and plants, but understudied in invasive social insects.Sylvia CremerLine V UgelvigFalko P DrijfhoutBirgit C Schlick-SteinerFlorian M SteinerBernhard SeifertDavid P HughesAndreas SchulzKlaus S PetersenHeino KonradChristian StaufferKadri KiranXavier EspadalerPatrizia d'EttorreNihat AktaçJørgen EilenbergGraeme R JonesDavid R NashJes S PedersenJacobus J BoomsmaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 12, p e3838 (2008) |
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Medicine R Science Q Sylvia Cremer Line V Ugelvig Falko P Drijfhout Birgit C Schlick-Steiner Florian M Steiner Bernhard Seifert David P Hughes Andreas Schulz Klaus S Petersen Heino Konrad Christian Stauffer Kadri Kiran Xavier Espadaler Patrizia d'Ettorre Nihat Aktaç Jørgen Eilenberg Graeme R Jones David R Nash Jes S Pedersen Jacobus J Boomsma The evolution of invasiveness in garden ants. |
| description |
It is unclear why some species become successful invaders whilst others fail, and whether invasive success depends on pre-adaptations already present in the native range or on characters evolving de-novo after introduction. Ants are among the worst invasive pests, with Lasius neglectus and its rapid spread through Europe and Asia as the most recent example of a pest ant that may become a global problem. Here, we present the first integrated study on behavior, morphology, population genetics, chemical recognition and parasite load of L. neglectus and its non-invasive sister species L. turcicus. We find that L. neglectus expresses the same supercolonial syndrome as other invasive ants, a social system that is characterized by mating without dispersal and large networks of cooperating nests rather than smaller mutually hostile colonies. We conclude that the invasive success of L. neglectus relies on a combination of parasite-release following introduction and pre-adaptations in mating system, body-size, queen number and recognition efficiency that evolved long before introduction. Our results challenge the notion that supercolonial organization is an inevitable consequence of low genetic variation for chemical recognition cues in small invasive founder populations. We infer that low variation and limited volatility in cuticular hydrocarbon profiles already existed in the native range in combination with low dispersal and a highly viscous population structure. Human transport to relatively disturbed urban areas thus became the decisive factor to induce parasite release, a well established general promoter of invasiveness in non-social animals and plants, but understudied in invasive social insects. |
| format |
article |
| author |
Sylvia Cremer Line V Ugelvig Falko P Drijfhout Birgit C Schlick-Steiner Florian M Steiner Bernhard Seifert David P Hughes Andreas Schulz Klaus S Petersen Heino Konrad Christian Stauffer Kadri Kiran Xavier Espadaler Patrizia d'Ettorre Nihat Aktaç Jørgen Eilenberg Graeme R Jones David R Nash Jes S Pedersen Jacobus J Boomsma |
| author_facet |
Sylvia Cremer Line V Ugelvig Falko P Drijfhout Birgit C Schlick-Steiner Florian M Steiner Bernhard Seifert David P Hughes Andreas Schulz Klaus S Petersen Heino Konrad Christian Stauffer Kadri Kiran Xavier Espadaler Patrizia d'Ettorre Nihat Aktaç Jørgen Eilenberg Graeme R Jones David R Nash Jes S Pedersen Jacobus J Boomsma |
| author_sort |
Sylvia Cremer |
| title |
The evolution of invasiveness in garden ants. |
| title_short |
The evolution of invasiveness in garden ants. |
| title_full |
The evolution of invasiveness in garden ants. |
| title_fullStr |
The evolution of invasiveness in garden ants. |
| title_full_unstemmed |
The evolution of invasiveness in garden ants. |
| title_sort |
evolution of invasiveness in garden ants. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2008 |
| url |
https://doaj.org/article/4a2bbeff54a145ce87841a5307e1ffdf |
| work_keys_str_mv |
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