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Costa Rican gut fungi (Trichomycetes) infeting lotic insect larvae

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dc.creatorLichtwardt, Robert W
dc.date2015-10-16
dc.date.accessioned2016-05-03T15:26:45Z
dc.date.available2016-05-03T15:26:45Z
dc.descriptionTrichomycetes infecting freshwater Ephemeroptera and Díptera (Siínuliidae, Chironomidae) in various life zones oC Cósta Rica were studied. Insect populations in 36 streams were sampled, a few repeatedly, at four different . perlods of time over seven years. Eleven new species of Harpellales are reported, plus six species known to occur also in n ontropical parts oí the world. Included are new species of Harpella and Pennella, a new monotypic genus (Graminelloides), and four new species of the previously monotypic genera Spartiella and Genistellospora. Seven new Smittiúm species, including three that are not named at this time, were cultured axenically. A new Amoebidium (Amoebidiales) was found in a stream polluted with organic matter. In the same polluted stream more species of dipteran larvae and a greater number of gut fungi were present than in stretclies of unpolluted water upstream. The overall diversity of Harpellales and their aquatic insect hosts in most Costa Rican streams appeared to be lower than what the author has found in many lotic habitats in more northem and southem regions of the world, and thus this order of fungi may be an exception to the 'latitudinal species diversity gradient' concept as it applies to many other tropical organisms. A key to all 23 Tric homycetes now known to be present in Costa Rica is provideden-US
dc.descriptionTrichomycetes infecting freshwater Ephemeroptera and Díptera (Siínuliidae, Chironomidae) in various life zones oC Cósta Rica were studied. Insect populations in 36 streams were sampled, a few repeatedly, at four different . perlods of time over seven years. Eleven new species of Harpellales are reported, plus six species known to occur also in n ontropical parts oí the world. Included are new species of Harpella and Pennella, a new monotypic genus (Graminelloides), and four new species of the previously monotypic genera Spartiella and Genistellospora. Seven new Smittiúm species, including three that are not named at this time, were cultured axenically. A new Amoebidium (Amoebidiales) was found in a stream polluted with organic matter. In the same polluted stream more species of dipteran larvae and a greater number of gut fungi were present than in stretclies of unpolluted water upstream. The overall diversity of Harpellales and their aquatic insect hosts in most Costa Rican streams appeared to be lower than what the author has found in many lotic habitats in more northem and southem regions of the world, and thus this order of fungi may be an exception to the 'latitudinal species diversity gradient' concept as it applies to many other tropical organisms. A key to all 23 Tric homycetes now k n o w n to be present in Costa R i c a is providedes
dc.formatapplication/pdf
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/21442
dc.identifier.urihttps://hdl.handle.net/10669/25944
dc.languageeng
dc.publisherUniversidad de Costa Ricaen
dc.rightsCopyright (c) 2015 International Journal of Tropical Biology and Conservationen
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 45 (4) December 1997; 1349-1383en
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 45 (4) December 1997; 1349-1383es
dc.sourceRevista Biología Tropical; Vol. 45 (4) December 1997; 1349-1383pt-PT
dc.source2215-2075
dc.source0034-7744
dc.subjectaquatic insectsen
dc.subjectdipteraen
dc.subjectephemeropteraen
dc.subjectsymbiosisen
dc.subjecttrichomycetesen
dc.subjecttropicsen
dc.titleCosta Rican gut fungi (Trichomycetes) infeting lotic insect larvaeen
dc.titleCosta Rican gut fungi (Trichomycetes) infecting lotic insect larvaees
dc.typeartículo original

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Revista de Biología Tropical