Diversity and distribution of riffle beetle assemblages (Coleoptera, Elmidae) in montane rivers of Southern Brazil

Braun, Bruna Marmitt; Salvarrey, Andrea Vanesa Batalla; Kotzian, Carla Bender; Spies, Márcia Regina; Pires, Mateus Marques

doi:10.1590/1676-060320140615183046

Cited by 12 publications

(23 citation statements)

References 35 publications

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“…Coarse inorganic substrates, such as cobbles and gravel, allow the growth of micro algae and periphyton (Príncipe et al ), favoring the occurrence of scrapers (Merritt & Cummins 1996). Richer riffle beetle communities have also been recorded in other southern Brazilian streams characterized by cobble substrates (Braun et al ).…”

Section: Discussionmentioning

confidence: 75%

“…Samplings conducted in winter and summer seasons were pooled, according to each sampling unit. This procedure helped increase the number of individuals of each sampling unit as the influence of season on richness and abundance in the southern Brazilian riffle beetle communities is not yet clear (Braun et al ). A total of 36 sampling units were used, corresponding to samplings conducted in each of the three substrate types (stone, gravel and litter), from each of the four buffer strips (1, 2, 3 and 4), in each of the three streams studied.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, not only sediment type but also organic particle size can also constitute a strong driver of riffle beetle communities. A scraper habit could explain the high abundance of certain riffle beetle genera and their life stages in montane streams with stony streambeds in southern Brazil (Braun et al ), where leaf litter does not accumulate and microalgae grow. Finally, previous studies showed that some riffle beetle taxa are sensitive to water pollution (Paula & Fonseca‐Gessner ; Corbi et al ; Iñiguez‐Armijos et al ), which is directly affected by riparian vegetation removal (Rios & Bailey ; Lorion & Kennedy ; Iñiguez‐Armijos et al ).…”

Section: Introductionmentioning

confidence: 99%

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Effects of riparian vegetation width and substrate type on riffle beetle community structure

Braun

Pires

Stenert

et al. 2017

Entomological Science

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Riffle beetle community structure is influenced by the preservation condition of stream riparian vegetation. Though, the width of riparian vegetation required to ensure conservation of stream insect communities is still controversial. Effects of alterations in riparian vegetation widths on stream insect community structure can be overcame by other environmental variables, like substrate type, hindering accurate assessments. We tested the effects of different riparian vegetation widths (>40, 30–15, 15–5 and <5 m) along with different substrate types (inorganic and organic) on riffle beetle community structure in southern Brazilian 4th‐ to 5th‐order streams. Riparian buffer widths and substrate types influenced riffle beetle community structure, but no interaction between them was observed. Reduced riparian vegetation widths downstream were associated with changes in riffle beetle dominant genera (Macrelmis predominated only in streams with narrowest riparian widths). Additionally, communities in organic substrates had lower equitability and different dominant genera (Hexacylloepus and Heterelmis) than inorganic ones. Our results showed that reductions in riparian vegetation were associated with water pollution and changes in riffle beetle community structure, suggesting that buffer strips narrower than 5 m are not adequate to maintain environmental integrity of southern Brazilian streams. These results have special importance for the conservation of stream insects in Brazil, as reductions up to less than 5 m in stream banks of small properties are allowed by the new Brazilian Forest Code, independently of stream order.

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Section: Discussionmentioning

confidence: 75%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of riparian vegetation width and substrate type on riffle beetle community structure

Braun

Pires

Stenert

et al. 2017

Entomological Science

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“…Riffle beetles (Elmidae) are coleopterans that inhabit lotic systems with well-oxygenated waters with strong currents during the larval and adult stages (Brown 1987, Passos et al 2003a, b, Couceiro et al 2007, Elliott 2008, Braun et al 2014a and commonly found in well-preserved streams (Braun et al 2014b). Some genera have been associated with streams running through well-preserved and sometimes large forested areas (Weigel et al 2003, Iñiguez-Armijo et al 2014, while others seem to be tolerant to forest conversion and can be abundant in deforested streams (Paula and Fonseca-Gessner 2010).…”

Section: Introductionmentioning

confidence: 99%

Responses of riffle beetle assemblages to deforestation in a semi-deciduous Atlantic Forest remnant

Braun

Bertaso

Pires

et al. 2018

An. Acad. Bras. Ciênc.

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Deforestation affects freshwater assemblages since aquatic organisms are dependent on the structure of the riparian vegetation. To investigate the responses of riffle beetles (Elmidae) to deforestation, this study assessed the structure of riffle beetle assemblages found in streams running through a large and well-preserved semi-deciduous Atlantic Forest remnant in Southern Brazil and in nearby deforested areas. Additionally, the effects of different substrate types (litter and stone) on the assemblages were assessed. Riffle beetle assemblages showed a remarkably distinct structure between forested and deforested areas. Lower abundance occurred in deforested streams. Indicator genera of forested streams were detected (e.g.,Macrelmis and Microcylloepus), while a generalist genus (Heterelmis) predominated in deforested streams. Substrate type did not affect the composition of riffle beetle genera, although higher abundance was found in litter. Our results are likely associated with changes in the vegetation type and levels and quality of allochthonous material input between forested (native and higher levels) and deforested (exotic and lower levels) streams, which are directly linked to the feeding habits of riffle beetles. Thus, our study reveals an interesting potential of riffle beetles as indicators of stream ecological integrity in semi-deciduous areas of the Atlantic Forest biome.

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“…Elmins are aquatic insect species that are sensitive to various pollutants such as agricultural, industrial and household waste. These species are reported to be clean water indicators due to their high sensitivity to pollutants (Braun et al 2014, Taşar, 2018a. The Heteroceridae family is known to have 200 species of 5 genera worldwide (Mascagni, 1995;Taşar, 2014a).…”

Section: Aquatic Insectsmentioning

confidence: 99%

Usage of Edible Aquatic Insects for Feed Rations of Poultry Animals

Bektaş¹,

Güler²

2019

JSTR

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With the rapidly increasing population of people today, mass production, inexpensive labor, low cost, high market share and economic sufficiency are the first issues that come to mind in poultry farming. The most important cost in the poultry farming sector is production of food. As insects are in the richest group that provides species variations in the feeds for living beings, they are a significant source of feeding poultry animals. In addition to this, it is believed that aquatic insects (Coleoptera) are a source with very high protein contents that is used in poultry husbandry. The levels of edible insect consumption are only known by some people in the world. In feeding hens, hen feeds may be experimentally used by mixing these with other edible insect groups that are easier to obtain. As it is possible to use edible insects as protein sources in human consumption, these may also be utilized in feeding poultry animals that are grown for eggs. Our aim for the future is to develop alternative methods that aim to enrich the quality of meat and eggs from poultry animals and conduct a study that provides statistical analysis results regarding hematological, biochemical and economic data. Moreover, we expected to see whether or not there would be potential health risks related to the consumption of these mixed feeds by laying hens and broilers. Consequently, the purpose of this review study is to provide information about edible aquatic insect species which are more economical and practical.

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Diversity and distribution of riffle beetle assemblages (Coleoptera, Elmidae) in montane rivers of Southern Brazil

Cited by 12 publications

References 35 publications

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Responses of riffle beetle assemblages to deforestation in a semi-deciduous Atlantic Forest remnant

Usage of Edible Aquatic Insects for Feed Rations of Poultry Animals

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