Diversity and microdistribution of black fly (Diptera: Simuliidae) assemblages in the tropical savanna streams of the Brazilian cerrado

Figueiró, Ronaldo; Gil-Azevedo, Leonardo H.; Maia-Herzog, Marilza; Monteiro, Ricardo Ferreira

doi:10.1590/s0074-02762012000300011

Cited by 27 publications

(29 citation statements)

References 37 publications

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“…Figueiró and Gil-Azevedo (2010) reported the scarcity of studies on microhabitat requirements of Neotropical black flies and the lack of studies relating labral morphology to microhabitat type in the Neotropics. Figueiró et al (2012) recently observed that Simulium subpallidum Lutz, 1909, in the presence of Simulium nigrimanum Macquart, 1838, was restricted to velocities between 0.19 m.s -1 and 0.88 m.s -1 , while the later occupied velocities between 0.99 m.s -1 and 1.32 m.s -1 . However, when S. nigrimanum was absent, S. subpallidum occupied the same water velocity range that the former species would.…”

Section: Introductionmentioning

confidence: 97%

Evidence of phenotypic plasticity of larvae of Simulium subpallidum Lutz in different streams from the Brazilian Cerrado

Figueiró

Calvet

Gil-Azevedo

et al. 2015

Revista Brasileira de Entomologia

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In this paper, the overall morphological differences between populations of Simulium subpallidum Lutz, 1909 are studied. Several studies found in the literature point to a relationship between the labral fans and body size and the habitat where blackfly larvae occur. However, other characteristics potentially related to the microhabitat, such as abdominal hook circlet morphology, which is used for larvae to fix themselves in the substratum, and thoracic prolegs morphology, which help larvae move in the substratum, were analyzed in three different populations of S. subpallidum, one of which occupied a faster flow. The results suggest phenotypic plasticity in S. subpallidum and a tendency toward larger structures in faster flows.

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Section: Introductionmentioning

confidence: 97%

Evidence of phenotypic plasticity of larvae of Simulium subpallidum Lutz in different streams from the Brazilian Cerrado

Figueiró

Calvet

Gil-Azevedo

et al. 2015

Revista Brasileira de Entomologia

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“…biotic factors, such as trophic relationships and food availability as well as abiotic factors (Figueiró et al, 2012). Other environmental changes that are associated with enrichment, i.e., alteration of the flow regime and changes in streamside vegetation, can influence the distribution and abundance of black flies (Pachón and Walton, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Other environmental changes that are associated with enrichment, i.e., alteration of the flow regime and changes in streamside vegetation, can influence the distribution and abundance of black flies (Pachón and Walton, 2011). Several studies on black fly communities associated with environmental factors have been reported from various parts of the world, though, mostly from America, Europe and Africa (McCreadie et al, 2006;Landeiro et al, 2009;Pachón and Walton, 2011;Figueiró et al, 2012;Rabha et al, 2013). Similar studies have been carried out on the planes of northeastern Thailand (Pramual and Kuvangkadilok, 2009;Pramual and Wongpakam, 2010).…”

Section: Introductionmentioning

confidence: 99%

Seasonal biodiversity of black flies (Diptera: Simuliidae) and evaluation of ecological factors influencing species distribution at Doi Pha Hom Pok National Park, Thailand

et al. 2015

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This is the first study on the seasonal biodiversity of black flies and evaluation of ecological factors influencing their distribution at Doi Pha Hom Pok National Park, northern Thailand. Larvae were collected from six fixed-stream sites in relation to altitude gradients from May 2011 to April 2013. The water temperature, water pH, conductivity, total dissolved solids (TDS), salt, water velocity, stream width and depth, streambed particle sizes, riparian vegetation, and canopy cover were recorded from each site. Monthly collections from the six sites yielded 5475 last-instar larvae, belonging to 29 black fly species. The most frequently found species from all sites were Simulium asakoae (100%) followed by Simulium yuphae (83.3%), and Simulium chiangdaoense, Simulium gombakense, Simulium phahompokense, Simulium fruticosum, Simulium maeaiense and Simulium fenestratum (66.6%). Of the 5475 last-instar larvae, S. maeaiense (19.3%), S. chiangdaoense (15.8%) and S. asakoae (14.8%), were the three most abundant species. The Shannon diversity index (H) at the six sites with different altitudes of 2100m, 2000m, 1500m, 1400m, 700m, and 500m above mean sea level, were 2.042, 1.832, 2.158, 2.123, 1.821 and 1.822, respectively. The Shannon index and number of taxa in the cold season were higher than those in the rainy and hot seasons. Principal component analysis (PCA) indicated that at least three principal components have eigen values >1.0 and accounted for 93.5% of the total variability of ecological factors among sampling sites. The Canonical correspondence analyses (CCA) showed that most species had a trend towards altitude, canopy cover, riparian vegetation and water velocity.

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“…and Simuliidae corroborate studies that indicate the preference and higher abundance of these two taxa to fast water environments (beneTTi et al, 1998;beneTTi & haMada, 2003;sanTos JR. et al, 2007;FiGueiRó et al, 2012). The opposite occurred with Gyrinus sp., because this genus was also present in this period while studies indicate the preference to lentic environments and pools in streams (beneTTi et al, 1998, seGuRa et al, 2012.…”

Section: Discussionmentioning

confidence: 95%

Macroinvertebrates under stochastic hydrological disturbance in Cerrado streams of Central Brazil

Saito

Mazão

2012

Iheringia, Sér. Zool.

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ABSTRACT. In the Cerrado vegetation, where the seasonal is well defined, rainfall has an important role in controlling the flow of streams and consequently on the structure of macroinvertebrates community. Despite the effects of rainfall associated with seasonality are well studied, little is known about the effects of stochastic rains on the community. In the present study we evaluated the structure and faunal composition of four first-order streams in Central Brazil during the dry season in two years, with and without stochastic rains. Community sampling was done by colonization of boards of high density polyethylene (HDPE), removed after one month submerged in streams. Analysis of Variance (ANOVA) performed indicated no difference in rarefied richness between the two periods, different from numeric density of organisms that was higher in the period without disturbance; moreover, the Detrended Correspondence Analysis (DCA) revealed differences in faunal composition between the two periods. Our results indicate that stochastic rainfall is an important factor in structuring the macroinvertebrates community in studied region.KEYWORDS. Rainfall, faunal structure, rarefied richness, numeric density, benthic fauna. RESUMO. Macroinvertebrados sob perturbações hidrológicas estocásticas em riachos de Cerrado do Brasil Central.No Cerrado, onde o regime pluviométrico é bem definido, as chuvas tem um importante papel no controle da vazão dos riachos e, por consequência, sobre a estruturação da fauna de macroinvertebrados. Apesar dos efeitos das chuvas associados à sazonalidade serem bem estudados, pouco se sabe a respeito dos efeitos de chuvas estocásticas sobre a comunidade. No presente estudo nós avaliamos a estrutura e a composição faunística de quatro riachos de primeira ordem no Brasil Central na estação seca em dois anos, com e sem chuvas estocásticas. A amostragem da comunidade foi feita através da colonização de placas de polietileno de alta densidade (PEAD), removidas após um mês submersas nos riachos. A Análise de Variância (ANOVA) realizada não indicou diferença da riqueza rarefeita entre os dois períodos coletados, diferente da densidade numérica de organismos que se mostrou maior no período em que não houve perturbação; além disso, a Análise de Correspondência Destendenciada (DCA) revelou diferenças na composição faunística entre os dois períodos. Nossos resultados indicam que as chuvas estocásticas são um importante fator na estruturação da fauna de macroinvertebrados na região estudada. PALAVRAS-CHAVE.Chuva, estrutura faunística, riqueza rarefeita, densidade numérica, fauna bentônica.

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Diversity and microdistribution of black fly (Diptera: Simuliidae) assemblages in the tropical savanna streams of the Brazilian cerrado

Cited by 27 publications

References 37 publications

Evidence of phenotypic plasticity of larvae of Simulium subpallidum Lutz in different streams from the Brazilian Cerrado

Evidence of phenotypic plasticity of larvae of Simulium subpallidum Lutz in different streams from the Brazilian Cerrado

Seasonal biodiversity of black flies (Diptera: Simuliidae) and evaluation of ecological factors influencing species distribution at Doi Pha Hom Pok National Park, Thailand

Macroinvertebrates under stochastic hydrological disturbance in Cerrado streams of Central Brazil

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