Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/17735
Title: Black-fly assemblage distribution patterns in streams in disturbed areas in southern Brazil
Authors: Couceiro, Sheyla R.M.
Hamada, Neusa
Sagot, Lúcia Beatriz
Pepinelli, Mateus
Keywords: Aquatic Ecosystem
Environmental Disturbance
Fly
Neotropical Region
Population Distribution
Rural Area
Spatial Distribution
Species Occurrence
Stochasticity
Stream
Assembly Rule
Geographical Distribution
Pest Species
Species Richness
Streamwater
Altitude
Aquatic Environment
Brasil
Electric Conductivity
Geography
Insect
Larva
Neotropics
Nonhuman
Ph
Rural Area
Simuliidae
Simulium
Simulium Clavibranchium
Simulium Incrustatum
Simulium Jujuyense
Simulium Minusculum
Simulium Perflavum
Simulium Pertinax
Simulium Rubrithorax
Simulium Spinibranchium
Simulium Subnigrum
Simulium Subpallidum
Simulium Tnaequale
Simulium Tncrustatum
Species Distribution
Species Identification
Species Richness
Stream (river)
Vegetation
Water Temperature
Controlled Study
Environmental Factor
Simulium Incrustatum
Species Coexistence
Animals
Classification
Female
Insect Bites And Stings
Insect Control
Microbiology
River
Simuliidae
Brasil
Rio Grande Do Sul
Water
Simuliidae
Simulium Nigricoxum
Animal
Brasil
Female
Insect Bites And Stings
Insect Control
Rivers
Simuliidae
Water Microbiology
Issue Date: 2014
metadata.dc.publisher.journal: Acta Tropica
metadata.dc.relation.ispartof: Volume 140, Pags. 26-33
Abstract: Black flies (Simuliidae) are considered to be pests in rural and in some urban areas in the south of Brazil due to the bites of females. Little information exists on the factors that contribute to Simuliidae distribution in these areas. We sampled 39 streams in the state of Rio Grande do Sul in September 2004 to address ecological aspects. Of the 18 species collected, those that occurred in more than 50% of the streams were: Simulium subnigrum Lutz 1910, Simulium pertinax Kollar 1882, Simulium subpallidum Lutz 1910 and Simulium incrustatum Lutz 1910. Species richness was not influenced by any of the environmental or geographical variables considered, and there was no pattern of species co-occurrence, corroborating the hypothesis of a stochastic distribution of the Simuliidae assemblage. When analyzed individually, only three of seven species with occurrence frequency >30% were related to any of the variables measured. The probabilities of occurrence of Simulium jujuyense Paterson & Shannon 1927 and S. pertinax were higher in streams with high values of water pH and electrical conductivity, whereas the opposite was observed for S. incrustatum. Therefore, due to stochastic distribution, the population studies of Simuliidae are more suitable for predicting the occurrence of species in rural areas than are studies of assemblages. © 2014 Elsevier B.V.
metadata.dc.identifier.doi: 10.1016/j.actatropica.2014.07.018
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