Tanytarsus rhabdomantis: New combination for Nimbocera rhabdomantis Trivinho-Strixino &amp;amp; Strixino, 1991 (Diptera: Chironomidae)

Trivinho‐Strixino, Susana; Sanseverino, Ângela M.

doi:10.11646/zootaxa.389.1.1

Cited by 824 publications

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“…The US is the most degraded as a function of receiving a large load of urban pollution, but in this environment, the species consumed a high amount of Chironomidae. Although the taxa in the gastrointestinal content identification was to family level, it is known that several Chironomidae genera and species are very resistant to hostile environment (Trivinho-Strixino & Strixino, 2005), being these genera probably the ones that colonize the US of this study. The amount of Chironomidae consumed (approximately 50% and 20% in the rainy and dry periods, respectively) coincides with its abundance in the environment in these hydrological periods (Janet Higuti, unpublished data) and it seems that the rainfall did not affect the permanence of these insects in this stream.…”

Section: Discussionmentioning

confidence: 97%

Diet of Poecilia reticulata Peters, 1959 in streams from Paraná River basin: influence of the urbanization

Alves

Tófoli

Ganassin

et al. 2016

Acta Sci. Biol. Sci.

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ABSTRACT. This study aimed to assess the diet of Poecilia reticulata in rural (RS) and urban stream (US) and under seasonal influence. We hypothesized that rainfall have a strong negative impact on the diet of the species in the US, due to its abrupt effect on food resources; in RS this effect is less apparent. Both streams belong to Pirapó River sub-basin, Paraná River basin. Fishes were sampled bimonthly, between July 2007 and June 2008 in three sample sites along the longitudinal gradient of the streams, using electrofishing. According to the Feeding Index, in both streams the population consumed almost exclusively detritus associated with aquatic organisms (>95%), regardless of the hydrological period. The main taxa explored by fish were Simuliidae in RS and Chironomidae in US. The diet was significantly different between streams; however, the seasonal factor was not significant, showing that the results were partially consistent with the suggested proposal. In US stream the diet of the fish followed an ordinarily pattern found in urban environments. Thus, P. reticulata can be used as a tool to assess environmental conditions due to its ability to reach bioindicator organisms, such as Chironomidae species. Keywords: benthivorous fish, feeding, macroinvertebrates, anthropic impact, Paraná River basin.Dieta de Poecilia reticulata Peters, 1959 em riachos da bacia do rio Paraná: influência da urbanização RESUMO. Este estudo objetivou investigar a dieta de Poecilia reticulata, em riacho rural (RR) e urbano (RU), sob influência sazonal. Foi hipotetizado que a chuva tem forte impacto negativo na dieta da espécie no RU, devido ao efeito abrupto sobre os recursos alimentares disponíveis, sendo este menos aparente em RR. Os riachos pertencem à sub-bacia hidrográfica do rio Pirapó, bacia do rio Paraná. Os peixes foram amostrados bimestralmente entre julho de 2007 e junho de 2008 em três pontos ao longo do gradiente longitudinal dos riachos, usando pesca elétrica. De acordo com o Índice alimentar, em ambos os riachos as populações consumiram quase que exclusivamente detrito associado com organismos aquáticos (>95%) independente do período hidrológico, sendo os principais: Simuliidae no RR e Chironomidae no RU. Houve diferença significativa na dieta entre os dois riachos, porém o fator sazonal não foi significativo, mostrando que os resultados foram parcialmente consistentes com a proposta sugerida. No RU a dieta mostrou um padrão comumente encontrado em ambientes urbanos. Dessa forma, P. reticulata pode ser usada como ferramenta para avaliar condições ambientais devido à sua habilidade em consumir organismos bioindicadores, tais como espécies de Chironomidae.Palavras-chave: peixe bentívoro, alimentação, impacto antrópico, bacia do rio Paraná. IntroductionThe fast radial expansion of urban centers has had as consequence the habitat degradation, and it reflects upon natural resources and aquatic ecosystems (Lee, 2000;Fogaça, Gomes, & Higuti, 2013). Regarding streams in urban areas, the status of degradation is more accele...

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Section: Discussionmentioning

confidence: 97%

Diet of Poecilia reticulata Peters, 1959 in streams from Paraná River basin: influence of the urbanization

Alves

Tófoli

Ganassin

et al. 2016

Acta Sci. Biol. Sci.

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“…In the Guide to Chironomidae Larvae of São Paulo State (TrivinhoStrixino & Strixino 1995) this species was called Tanytarsini Gênero A sp.2. The feature is unique among the Tanytarsini, but similar to the annular Lauterborn organs pedicels of the Nimbocera patagonica and some Tanytarsus and Caladomyia species Trivinho-Strixino & Sanseverino 2003). This characteristic annulation of the second antennal segment of some species of Tanytarsus larvae was commented by authors as Roback (1966) with his Calopsectra sp.13, Nolte (1989) with Tanytarsus (b) and Epler (2001) with Tanytarsus sp.…”

Section: Taxonomic Remarksmentioning

confidence: 68%

A new Tanytarsus species (Insecta, Diptera, Chironomidae) from São Paulo State, Brazil

Strixino

Sonoda²

2006

Biota Neotrop.

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Tanytarsus obiriciae, spec. nov., a new Tanytarsini from the Neotropics is described based on male and female adults, larvae and pupae. The larvae were found living associated with aquatic macrophytes in ponds and lakes from the Northern Region of São Paulo State, Brazil. Information on larval abundance dynamics and the adults' emergence periods is presented. Tanytarsus obiriciae, spec. nov., nova espécie de Tanytarsini da região Neotropical é descrita com base em todos os estágios, macho e fêmea adultos, pupa e larva. As larvas foram encontradas vivendo associadas a macrófitas aquáticas em lagoas e lagos da região norte do Estado de São Paulo, Brasil. Informações sobre a dinâmica numérica das larvas e a periodicidade da emergência dos adultos são apresentadas. Palavras

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“…In freshwaters of Brazil, the importance of aquatic invertebrates, especially Chironomidae, has often been demonstrated and some research has been done to understand their distribution in running water ecosystems (Trivinho-Strixino et al, 2000;Higuti and Takeda, 2002), ecological (Sanseverino and Nessimian, 2001;Henriques-Oliveira et al, 2003;Sanseverino and Nessimian, 2008) and taxonomic aspects (Trivinho- Strixino and Sanseverino, 2003;Roque and Trivinho-Strixino, 2003).…”

Section: Introductionmentioning

confidence: 99%

Habitats and trophic relationships of Chironomidae insect larvae from the Sepotuba River basin, Pantanal of Mato Grosso, Brazil

Butakka¹,

Grzybkowska

Pinha

et al. 2014

Braz. J. Biol.

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Benthic habitats are linked by physical processes and are essential elements in assessing of the distribution dynamics of Chironomidae dipteran insects and their role in aquatic ecosystems. This work presents results of distribution patterns of chironomids larvae in 38 sites that are abundant in the study site, inhabiting the substrate of the main river channel, rapids, tributary brook, floodplain lakes and reservoir along the Sepotuba River from its mouth at the Paraguay River to the headwater region. A total of 1,247 larvae was registered. The most abundant taxa were Polypedilum (Tripodura) sp. (25.2%), Cricotopus sp.3 (23.0%) and Tanytarsus sp. (15.0%). Fissimentum desiccatum were found only in the reservoir; Fissimentum sp.2 and Tanytarsus cf. T. obiriciae sp.2 in floodplain lakes, and Goeldichironomus sp. in the main channel. The low diversity of the sites S06 and S35 is caused by the near-exclusive presence of the species Cricotopus sp.3, alone or together with one or another taxon (Tanytarsus sp., Djalmabatista sp.3). Collectors-filterers represent 16%, collectors-gatherers 15%, predators 11% and scrapers only 1%. The predators dominated in the secondary channel (±88 ind/m 2 ), corresponding to 40% of the total of this group. Cryptochironomus sp.2 (34%) and Ablasbemyia gr. annulata (26%) were the most abundant among the predators. The differences along the river course are decisive for the formation of distinct or discontinuous communities and the limits become obvious though the interrelations between the populations in the community, as for instance, competition for food and habitats.Keywords: Chironomidae, functional trophic groups, diversity, Pantanal of Mato Grosso, floodplains. Hábitats e relações tróficas de insetos Chironomidae da bacia do RioSepotuba, Pantanal de Mato Grosso, Brasil ResumoHábitats bênticos estão ligados por processos físicos e são elementos essenciais na avaliação da dinâmica de distribuição de insetos dípteros Chironomidae e seu papel em ecossistemas aquáticos. Este trabalho apresenta os resultados dos padrões de distribuição de larvas de Chironomidae em 38 locais que são abundantes na área de estudo, habitando o substrato do canal principal do rio, cachoeiras, córregos tributários, lagoas de planície de inundação, e reservatórios ao longo do Rio Sepotuba de sua desembocadura ao Rio Paraguai e na região de cabeceira.

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Tanytarsus rhabdomantis: New combination for Nimbocera rhabdomantis Trivinho-Strixino & Strixino, 1991 (Diptera: Chironomidae)

Cited by 824 publications

References 0 publications

<b>Diet of <i>Poecilia reticulata</i> Peters, 1959 in streams from Paraná River basin: influence of the urbanization

<b>Diet of <i>Poecilia reticulata</i> Peters, 1959 in streams from Paraná River basin: influence of the urbanization

A new Tanytarsus species (Insecta, Diptera, Chironomidae) from São Paulo State, Brazil

Habitats and trophic relationships of Chironomidae insect larvae from the Sepotuba River basin, Pantanal of Mato Grosso, Brazil

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