Changes in parasitoid communities over time and space: a historical case study of the maize pest Ostrinia nubilalis
Understanding the ways in which human environmental modifications affect biodiversity is a key challenge in conservation planning, pest control and evolutionary ecology. Parasitoid communities, particularly those associated with agricultural pests, may be susceptible to such modifications. We docume...
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| Veröffentlicht in: | PloS one 2011-09, Vol.6 (9), p.e25374-e25374 |
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| creator | Folcher, Laurent Bourguet, Denis Thiéry, Denis Pélozuelo, Laurent Phalip, Michel Weissenberger, Alain Eychenne, Nathalie Regnault-Roger, Catherine Delos, Marc |
| description | Understanding the ways in which human environmental modifications affect biodiversity is a key challenge in conservation planning, pest control and evolutionary ecology. Parasitoid communities, particularly those associated with agricultural pests, may be susceptible to such modifications. We document here changes in the larval parasitoid communities of Ostrinia nubilalis--the main pest of maize--and its sibling species O. scapulalis, based on two historical datasets, one collected from 1921-1928 and the other from 2001-2005. Each of these datasets encompasses several years and large geographical areas and was based on several thousands/millions of host larvae. The 80-year interval between the two datasets was marked by a decrease in O. nubilalis parasitism to about two thirds its initial level, mostly due to a decrease in the rate of parasitism by hymenopterans. However, a well balanced loss and gain of species ensured that species richness remained stable. Conversely, O. scapulalis displayed stable rates of parasitism over this period, with a decline in the species richness of its parasitoid community. Rates of parasitism and species richness in regions colonized by O. nubilalis during the 1950s were one half to one third those in regions displaying long-term colonisation by this pest. During the recent human activity-driven expansion of its range, O. nubilalis has neither captured native parasitoids nor triggered parasite spill back or spill over. |
| doi_str_mv | 10.1371/journal.pone.0025374 |
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Parasitoid communities, particularly those associated with agricultural pests, may be susceptible to such modifications. We document here changes in the larval parasitoid communities of Ostrinia nubilalis--the main pest of maize--and its sibling species O. scapulalis, based on two historical datasets, one collected from 1921-1928 and the other from 2001-2005. Each of these datasets encompasses several years and large geographical areas and was based on several thousands/millions of host larvae. The 80-year interval between the two datasets was marked by a decrease in O. nubilalis parasitism to about two thirds its initial level, mostly due to a decrease in the rate of parasitism by hymenopterans. However, a well balanced loss and gain of species ensured that species richness remained stable. Conversely, O. scapulalis displayed stable rates of parasitism over this period, with a decline in the species richness of its parasitoid community. Rates of parasitism and species richness in regions colonized by O. nubilalis during the 1950s were one half to one third those in regions displaying long-term colonisation by this pest. During the recent human activity-driven expansion of its range, O. nubilalis has neither captured native parasitoids nor triggered parasite spill back or spill over.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0025374</identifier><identifier>PMID: 21980436</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Agricultural pests ; Agriculture ; Animals ; Biodiversity ; Biology ; Case reports ; Case studies ; Citrus fruits ; Colonization ; Communities ; Community planning ; Conservation ; Corn ; Databases, Factual ; Datasets ; Diptera ; Ecology ; Environment ; Evolution ; Global warming ; Gracillariidae ; Habitats ; History, 20th Century ; History, 21st Century ; Human Activities ; Insects ; Larva - physiology ; Larvae ; Lepidoptera ; Life Sciences ; Mathematics ; Mortality ; Moths - classification ; Moths - physiology ; Ostrinia nubilalis ; Parasites ; Parasitism ; Parasitoids ; Pest control ; Pests ; Pyralidae ; Sibling species ; Species richness ; Studies ; Tachinidae ; Urbanization ; Vegetal Biology ; Wildlife conservation ; Zea mays - parasitology</subject><ispartof>PloS one, 2011-09, Vol.6 (9), p.e25374-e25374</ispartof><rights>COPYRIGHT 2011 Public Library of Science</rights><rights>2011 Folcher et al. 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Parasitoid communities, particularly those associated with agricultural pests, may be susceptible to such modifications. We document here changes in the larval parasitoid communities of Ostrinia nubilalis--the main pest of maize--and its sibling species O. scapulalis, based on two historical datasets, one collected from 1921-1928 and the other from 2001-2005. Each of these datasets encompasses several years and large geographical areas and was based on several thousands/millions of host larvae. The 80-year interval between the two datasets was marked by a decrease in O. nubilalis parasitism to about two thirds its initial level, mostly due to a decrease in the rate of parasitism by hymenopterans. However, a well balanced loss and gain of species ensured that species richness remained stable. Conversely, O. scapulalis displayed stable rates of parasitism over this period, with a decline in the species richness of its parasitoid community. 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One</addtitle><date>2011-09-30</date><risdate>2011</risdate><volume>6</volume><issue>9</issue><spage>e25374</spage><epage>e25374</epage><pages>e25374-e25374</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Understanding the ways in which human environmental modifications affect biodiversity is a key challenge in conservation planning, pest control and evolutionary ecology. Parasitoid communities, particularly those associated with agricultural pests, may be susceptible to such modifications. We document here changes in the larval parasitoid communities of Ostrinia nubilalis--the main pest of maize--and its sibling species O. scapulalis, based on two historical datasets, one collected from 1921-1928 and the other from 2001-2005. Each of these datasets encompasses several years and large geographical areas and was based on several thousands/millions of host larvae. The 80-year interval between the two datasets was marked by a decrease in O. nubilalis parasitism to about two thirds its initial level, mostly due to a decrease in the rate of parasitism by hymenopterans. However, a well balanced loss and gain of species ensured that species richness remained stable. Conversely, O. scapulalis displayed stable rates of parasitism over this period, with a decline in the species richness of its parasitoid community. Rates of parasitism and species richness in regions colonized by O. nubilalis during the 1950s were one half to one third those in regions displaying long-term colonisation by this pest. During the recent human activity-driven expansion of its range, O. nubilalis has neither captured native parasitoids nor triggered parasite spill back or spill over.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>21980436</pmid><doi>10.1371/journal.pone.0025374</doi><tpages>e25374</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1932-6203 |
| ispartof | PloS one, 2011-09, Vol.6 (9), p.e25374-e25374 |
| issn | 1932-6203 1932-6203 |
| language | eng |
| recordid | cdi_plos_journals_1308857717 |
| source | MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry; Public Library of Science (PLoS) |
| subjects | Agricultural pests Agriculture Animals Biodiversity Biology Case reports Case studies Citrus fruits Colonization Communities Community planning Conservation Corn Databases, Factual Datasets Diptera Ecology Environment Evolution Global warming Gracillariidae Habitats History, 20th Century History, 21st Century Human Activities Insects Larva - physiology Larvae Lepidoptera Life Sciences Mathematics Mortality Moths - classification Moths - physiology Ostrinia nubilalis Parasites Parasitism Parasitoids Pest control Pests Pyralidae Sibling species Species richness Studies Tachinidae Urbanization Vegetal Biology Wildlife conservation Zea mays - parasitology |
| title | Changes in parasitoid communities over time and space: a historical case study of the maize pest Ostrinia nubilalis |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-05T14%3A27%3A03IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Changes%20in%20parasitoid%20communities%20over%20time%20and%20space:%20a%20historical%20case%20study%20of%20the%20maize%20pest%20Ostrinia%20nubilalis&rft.jtitle=PloS%20one&rft.au=Folcher,%20Laurent&rft.date=2011-09-30&rft.volume=6&rft.issue=9&rft.spage=e25374&rft.epage=e25374&rft.pages=e25374-e25374&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0025374&rft_dat=%3Cgale_plos_%3EA476877737%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1308857717&rft_id=info:pmid/21980436&rft_galeid=A476877737&rft_doaj_id=oai_doaj_org_article_cfb83422164c42c1a41309666559793a&rfr_iscdi=true |