title: Immature mosquitoes from groundwater habitats in a temperate wetland of Argentina: environmental associations and seasonal variation of community attributes.
abstract: We studied the seasonal patterns of 3 community attributes (breeding site index, richness, and diversity) of groundwater mosquito immatures and their associations with meso- and microhabitat factors in the Parana Lower Delta, Argentina, from December 2009 to November 2010. Monthly collections at 4 sites yielded 2,313 mosquito immatures, belonging to 19 species assigned to 6 genera. Immatures developed in a wide range of microenvironmental conditions (water temperature 4.0-30.2 degrees C, pH 5.4-9.1, electrical conductivity 0.02-6.33 mS/cm, and dissolved oxygen 0-235.6%), and their occurrence was significantly associated with lower water temperature and dissolved oxygen values. Most frequently captured species were Culex dolosus s.l. (58.6%), Aedes crinifer (22.9%), and Cx. intrincatus (19.0%). Breeding site index was highest in winter (0.76) and lowest in spring (0.54). Species richness and diversity varied significantly among seasons (peaking in summer), land uses, and habitat types.
authors.affiliation: Unidad de Ecología de Reservorios y Vectores de Parásitos, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
authors.forename: Maria Victoria
authors.initials: MV
authors.lastname: Cardo
authors.forename: Dario
authors.initials: D
authors.lastname: Vezzani
authors.forename: Anibal Eduardo
authors.initials: AE
authors.lastname: Carbajo
mesh_terms: D000818:Animals; D001118:Argentina; D002980:Climate; D009033:Culicidae / Q000145:classification* / Q000235:genetics* / Q000254:growth & development; D003710:Demography; D017753:Ecosystem; D005618:Fresh Water; D012621:Seasons; D013045:Species Specificity; D013696:Temperature; D013997:Time Factors