Larvas de Synoestropsis sp. (Trichoptera: Hydropsychidae) são predadoras?

Abstract

RESUMOCaracterísticas morfológicas sugerem que larvas de Synoestropsis sp. (trichoptera: Hydropsychidae) são predadoras. examinamos o conteúdo estomacal de 48 larvas de Synoestropsis sp. coletadas na época de estiagem de quatro rios de cerrado (Arraia, Cauamé, Cotingo e ereu) do estado de Roraima para avaliar o hábito alimentar de larvas desse gênero. A alta freqüência de itens animais no conteúdo estomacal das larvas corrobora a hipótese de que esta espécie é predadora. PALAVRAS-CHAVE:Insetos aquáticos, hábito alimentar, cerrado roraimense Are Synoestropsis sp. larvae (Trichoptera: Hydropsychidae) predators? ABSTRACTMorphological characteristics of the Synoestropsis sp. larvae (trichoptera: Hydropsychidae) suggests that this species is a predator. We examined the stomach contents of 48 Synoestropsis sp. larvae collected in four savannah rivers (Arraia, Cauamé, Cotingo e ereu) in the state of Roraima during the dry season to evaluate their feeding habits. the high frequency of animal items in the stomach content confirmed the hypothesis that this specie is a predator.

Diversity and composition of Trichoptera (Insecta) larvae assemblages in streams with different environmental conditions at Serra da Bocaina, Southeastern Brazil

“…This result denotes a high tolerance of this genus to small impacts as absence of riparian vegetation, sedimentation, or small input of organic matter, and corroborates the results found by Righi-Cavallaro et al (2010) and Massoli & Callil (2014) for other regions of the country. According Bentes et al (2008), Smicridea is a water quality bioindicator with generalist habit which can be found in environments with different degrees of preservation. Smicridea larvae are found in rocky substrates in moderate or high current velocity and its main source of food is fine particulate organic matter (FPOM) that is trapped in the capture nets they build (Wiggins, 1996;Merritt & Cummins, 1996).…”

Trichoptera Kirby (Insecta) immature fauna from Rio das Almas Basin and Rio Paranã, Goiás State, Brazil, with new records for some genera

“…Zumatrichia Mosely larvae are periphyton scrapers (Wiggins 1996a,b) and probably so are Anchitrichia Flint larvae (Flint Junior 1983). Synoestropsis Ulmer is a predatory hydropsychid (Bentes et al 2008) and was collected in a gravel riffle of a large stream (Flint Junior et al 1999), the same micro-habitat where this genus was sampled in this study.…”

“…Synoestropsis Ulmer with 10 described species (Morse 2011 , Santos et al 2011; Synoestropsis punctipennis Ulmer, 1905 in Amazonas State ; and Synoestropsis stictonata Navás, 1932 in Santa Catarina State . Synoestropsis Ulmer was registered by Marioni & Almeida (2000) in Paraná State, by Bentes et al (2008) in Roraima State and by Spies & Froehlich (2009) in São Paulo State. In Roraima, Mato Grosso and Goiás it was sampled in the Brazilian Savanna (Bentes et al 2008, Calor 2008b, and the present study respectivelly).…”

Catalog of the Neotropical Trichoptera (Caddisflies)

“…— Roback, 1966 :243 [probable larva]. — Bentes et al, 2008 :580 [biology]. — Calor, 2008a :320 [larva].…”