As pesquisas sobre insetos aquáticos vem sendo muito difundidas nos últimos anos. Entretanto, existem lacunas o conhecimento de suas relações com macrófitas aquáticas. O objetivo deste trabalho foi analisar a composição e estrutura da entomofauna associada seis gêneros represa do Ribeirão das Anhumas (Américo Brasiliense/SP), avaliar as categorias funcionais tróficas dos insetos, comparar similaridades faunísticas entre os períodos coletas através analises PSC (similaridade) ACP (Análise...

Insects of the orders Ephemeroptera, Plecoptera, and Trichoptera (EPT) are often used to assess conditions aquatic environments, but few studies have examined differences in these communities between riffles pools. Our objective was test whether shelter greater richness abundance EPT, as well sensitivity insects for detecting impacts from different land uses streams southeastern Brazil. Samples were collected dry season 2012 with a Surber sampler pools nine (forest, pasture, urban areas)....

Despite the importance of Oligochaeta to dynamics aquatic ecosystems and studies biology pollution, there is currently a dearth information on this group's ecology in Brazil. The aim study was describe fauna four watercourses - three urban one rural state São Paulo: Pinheirinho stream, Água Branca Monjolinho River Gouveia respectively. Sediment samples were taken with Van Veen grab two areas from each watercourse, during summer winter 2001. In all collection areas, measurements pH,...

Studies on benthic macroinvertebrates of lotic environments usually focus the occurrence, distribution, and richness aquatic insects decapod crustaceans. Only rarely these studies include Oligochaeta. The aim present study was to examine occurrence species Oligochaeta in different substrata patches environments. studied included seven stream sites at Parque Estadual Intervales (São Paulo, Brazil). Stream differed size ranged from first fourth order. In each stream, qualitative collections...

Abstract There are few studies in tropical regions exploring the use of leaf breakdown process as a functional tool to assess anthropic disturbance on aquatic ecosystems. We assessed effects water pollution due human activities rate Picramnia sellowii streams southeastern Brazil. The experiment was carried out for 60 days three reference and impaired by organic absence riparian vegetation. Three litter bags were incubated each stream containing 3 ± 0.05 g P. leaves. presented higher values...

The Chironomidae occupy different habitats along the lotic system with their distribution determined by factors such as substrate characteristics and water speed. input of vegetable material from riparian forest allows a higher habitat diversity food to benthic fauna. main aim this paper is verify structure spatial fauna in mesohabitats first order stream located at Biological Reserve southeast Brazil. In months July, August, September 2007, January, February, March 2008, samples were...

In order to estimate the water quality of São Pedro stream, through distribution and composition Chironomidae larvae present in sediment four sampling sites were selected. each site, three samples collected within a period twelve months using Petersen (0.0189 m²) van Veen (0.0518 dredges. Samples washed sieve with 0.21 mm mesh organisms sorted transparent trays, light shine being reflected into tray. The located greatest urban showed high densities genus Chironomus lower values for...

The objective of the present study was to examine colonization oligochaetes during decomposition leaves macrophyte Eichhornia azurea in a lentic system southeastern Brazil. experiment conducted between September and November 2007, with use 21 nylon bags measuring 15×15 cm 2 mm mesh, each containing 10 g dried leaves. were removed from lake after 2, 5, 8, 12, 25, 45 65 days. At end experiment, 31.40% initial mass remained, rate 0.018 d−1. mean density 32.81±9.58 ind.g−1 DM. sub-families...

The family Amplullaridae belongs to this class Gastropoda and is made up of freshwater organisms with a wide geographical distribution in tropical regions. Oligochaeta worms can be found association snails family, inhabiting the umbilicus their shells. Due lack information on ecology these worms, work focused investigating which kind species associate mollusk Pomacea bridgesii (Reeve, 1856). Samples were collected during winter spring 2003 summer 2004. From total 209 collected, presence was...

The family Amplullaridae belongs to this class Gastropoda and is made up of freshwater organisms with a wide geographical distribution in tropical regions. Oligochaeta worms can be found association snails family, inhabiting the umbilicus their shells. Due lack information on ecology these worms, work focused investigating which kind species associate mollusk Pomacea bridgesii (Reeve, 1856). Samples were collected during winter spring 2003 summer 2004. From total 209 collected, presence was...

This paper analyses the relationship among mesohabitat and aquatic oligochaete species in Galharada Stream (Campos do Jordão State Park, state of São Paulo, Brazil). Between August 2005 May 2006 a total 192 samples were obtained areas four different mesohabitats: riffle leaf litter (RL), pool (PL), sediment (PS) interstitial from rocky beds (IS). In mesohabitats sampled, 2007 specimens identified, belonging to two families (Naididae Enchytraeidae). Among oligochaetes identified Naididae was...

The objective of this study was to analyze the colonization Chironomidae (Diptera) larvae during decomposition Eichhornia azurea (Swartz) Kunth (Commelinales: Pontederiaceae) leaves in a lake southeastern Brazil two seasons year. experiment conducted from September November 2007 and February April 2008. In each period, 21 litter bags were used, containing 10 g dried leaves. Three removed after 2, 5, 8, 12, 25, 45, 65 days colonization. rate E. rapid both seasons, with no significant...

Riparian vegetation along streams in the Atlantic Forest Brazil contributes to formation of a highly heterogeneous leaf litter streambeds. To investigate structure and composition aquatic invertebrate community during process decomposition two plant species present banks stream studied, 21 plastic mesh bags containing 2.5g (dry weight) matter from each (Alchornea glandulosa (Vell) Cabralea canjerana End. Poeppig), for total 5.0g, were placed streambed. Three removed after 3, 6, 9, 12, 24, 48...

Centro Universitario de Araraquara, UNIARA, SP, BrazilCorrespondence to: Juliano J. Corbi, Laboratorio Entomologia Aquatica, Departamento Hidrobiologia,Universidade Federal Sao Carlos, C.P. 676, Brazil, e-mail: pjcorbi@iris.ufscar.brReceived April 24, 2003 – Accepted July 7, Distributed February 28, 2005

Site preference and spatial temporal occurrence of the peritrich ciliate Rhabdostyla sp. colonizing oligochaetes species Limnodrilus hoffmeisteri were investigated along a polluted stream in Brazil. Three patterns site ciliates on observed, with location predominantly posterior region L. hoffmeisteri. The epibionts was spatially temporally heterogeneous. results are discussed terms possible causes ciliates' for tubificids, factors related to heterogeneous patterns.

The tubificid worm Limnodrilus hoffmeisteri Claparede, 1862 is widely used as an indicator of organic pollution in aquatic environments. Nevertheless, little known about its biology. present work aimed to compare the reproductive rate L. raised at three different temperatures (15, 20 and 25°C). Seventy-five adult individuals were kept fifteen 250 ml beakers (five per beaker) containing sand dechlorinated tap-water each. Beakers arranged so form groups five. Each group was a given temperature...

Abstract Aim The high sensitivity of springs to anthropic impacts is largely due the existing aquatic-terrestrial connectivity. degradation these ecosystems can be caused by land use, such as eucalyptus monoculture. aim this study was test influence Eucalyptus urograndis plantations on richness and diversity benthic macroinvertebrate community environmental variables measured in Atlantic Forest domains. Methods Ten (5 native forest areas 5 area) were sampled dry period 2017. organisms...

Mosses and liverworts can be colonized by various invertebrates, including fresh water oligochaete worms. However, little information is available on the habits habitats of this oligochaetes in Brazil. Therefore, present study was undertaken to examine occurrence naidids mosses, as well broaden knowledge about these oligochaetes. Sampling bryophytes adhered rock substrates rapids Jacaré Pepira River (municipality Brotas, São Paulo, Brazil) a vertical wall waterfall near river revealed 191...

Epibiosis is a facultative association of two organ -isms: the epibiont and basibiont. The term “epibiont” includes organisms that, during sessile phase their life cycle, are attached to surface living substra-tum, while basibiont lodges constitutes support for (Wahl, 1989; Fernandez-Leborans Tato-Porto, 2000). Several ciliate protozoans live as epibionts on ani-mals plants, using them substrate (Fenchel, 1987; Sleigh, 1988; Mayen-Estrada Aladro-Lubel, 2001). Most ciliates genus

O objetivo desse artigo foi inventariar as espécies de oligoquetos limnícolas que habitam córregos do Parque Estadual Campos Jordão (PECJ). As amostras revelaram 2302 indivíduos, distribuídos em três famílias (Naididae, Enchytraeidae, Tubificidae). Foram inventariadas 17 espécies, sendo elas: Achaeta sp., Allonais paraguayensis, Chaetogaster diastrophus, Nais communis, variabilis, Pristina biserrata, leidyi, proboscidea, Pristinella jenkinae, longidentata, minuta, notopora, osborni, sima,...