Elenco y biogeografía de los ácaros acuáticos (Acari, Parasitengona, Hydrachnidia) de Sudamérica

Ferradás, Beatriz Rosso de; Fernández, Héctor Velázquez

doi:10.3989/graellsia.2005.v61.i2.19

Cited by 19 publications

(13 citation statements)

References 16 publications

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“…To date, the last two biomonitoring requirements are well known for European species; however, data on the ecology of tropical water mites are still very limited. The few existing studies suggest that neotropical taxa have a similarly differentiated sensitivity towards habitat type and water quality (Fernández & Fossati-Gaschignard, 2011;Goldschmidt, 2001Goldschmidt, , 2004aGoldschmidt, , 2009aGoldschmidt, , 2009bMonkolski et al, 2005;Rosso de Ferradás & Fernández, 2005).…”

Section: Introductionmentioning

confidence: 99%

Ecology of water mite assemblages in Panama – First data on water mites (Acari, Hydrachnidia) as bioindicators in the assessment of biological integrity of neotropical streams

2016

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The ecological integrity of freshwater ecosystems is regularly examined through assessment of their macroinvertebrate assemblages. The various methods used in such biomonitoring all have one characteristic in commonthe neglect of water mites. Even though this group perfectly fulfills all necessary requisites for successful bioindicators, these invertebrates are either completely ignored or lumped together as-Acari‖. This study, for the first time, uses water mites (Hydrachnidia) as bioindicators in the Neotropics to compare the anthropogenic stress in 15 streams at three different levels of contamination (pristine, rural, urban). In total, 4371 water mite specimens, belonging to 31 genera and 14 families, were collected. Diversity, abundance, and richness of water mite assemblages were significantly reduced with increasing levels of contamination. These differences were clearest in the dry season. Atractidella turned out to be, by far, the most tolerant water mite genus, having the greatest abundance at the most contaminated sites. In contrast, Pseudotorrenticola was found only in pristine waters, while Hydrodroma, Limnesia, Koenikea, Torrenticola, Monatractides and the family Aturidae showed clear preferences for pristine waters.

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Section: Introductionmentioning

confidence: 99%

Ecology of water mite assemblages in Panama – First data on water mites (Acari, Hydrachnidia) as bioindicators in the assessment of biological integrity of neotropical streams

2016

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“…We considered as superficial species those that are able to move easily within the aquatic vegetation and are seldom found in open waters. Benthic species are able to move between the sediment grains, are seldom found above Fernández, 2005), with numbers of species indicated as well as functional classification. Un-Unknown, T-Thermal, P-Planktonic, S-Superficial, B-Benthic, Sx-Stygoxene, Oh-Occasional hyporheos, Pe-Permanent hyporheos, U-Ubiquitous stygobite, Ph-phreatobyte.…”

Section: Proposed Classificationmentioning

confidence: 99%

“…In addition, with the exception of a few studies [3][4][5][6] in South America, knowledge has barely progressed beyond the stage of describing local water mite fauna. However, taxonomic lists have recently been published for South America in general [7] and for Argentina in particular [8].…”

Section: Introductionmentioning

confidence: 99%

An Initial Classification of Neotropical Water Mites (Acari: Hydrachnidia) Based on Habitat Preferences

Fernández

Fossati‐Gaschignard

2011

International Journal of Ecology

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Existing classifications of benthic and interstitial freshwater invertebrates are described and discussed. A classification is proposed for southern neotropical (south of latitude S 15) water mites in relation to their life style and habitat preferences. The classification includes planktonic, superficial, benthic, thermal, and subterranean forms. The diversity of the Hydrachnidia family and genera (22 families, 97 genera, and 521 species) is then analyzed using the new classification. Ubiquitous stygobites deserve special consideration because they move through ecotone zones and tolerate extreme conditions. Water mite communities from a north-western Argentinean stream were first described using a surber net and consequently considered as benthic. Nineteen Hydrachnidia species (from benthic to stygobite) were collected and classified. The vertical distribution observed during the year confirmed the permanent presence of benthic Hydrachnidia, even during the first flood, which is of special importance in running waters. The functional classification we propose will facilitate comparison of fauna from different areas that have different faunistic composition but may have similar functional distribution.

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“…Specimens were identified to species using a phase-contrast light microscope (Leica DM750) with the help of identification keys (Rosso de Ferradás andFernández 2009, Smith et al 2009). Specimens collected were deposited in the mite reference collection of the Museum of Natural Sciences of the University Center UNIVATES (ZAUMCN), Lajeado, Rio Grande do Sul, Brazil.…”

Section: Methodsmentioning

confidence: 99%

Responses of water mite assemblages (Acari) to environmental parameters at irrigated rice cultivation fields and native lakes

Silva¹,

Metzelthin

Da-Costa

et al. 2017

Zoologia

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ABSTRACT. Many studies have revealed that water mite communities can be affected by the physical and chemical parameters of the water. The similarity between the water 'mite assemblages in local water bodies and in irrigated rice areas can be a way to measure the water conditions, enabling an assessment of the anthropic impact in the environment. The aim of this study was to evaluate the distribution of water mites in lakes and irrigated rice fields in south Brazil. To accomplish that we characterized the distinctive environments using physical and chemical variables such as pH, turbidity (NTU), water temperature (°C) and dissolved oxygen (mg/L), in order to verify the influence of these abiotic factors on the species composition of water mite communities; and to compare water mite abundance, richness and composition among different habitats.We assessed three native lakes and four sites with irrigated rice cultivation. Our results showed, for the first time in Brazil, strong correlations between the water mite fauna and turbidity. In addition, native lakes were richer and had greater mite abundance when compared with the irrigated rice areas. KEY WORDS. Coastal plain, habitat, physical and chemical variables, rice field, water mite.

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Elenco y biogeografía de los ácaros acuáticos (Acari, Parasitengona, Hydrachnidia) de Sudamérica

Cited by 19 publications

References 16 publications

Ecology of water mite assemblages in Panama – First data on water mites (Acari, Hydrachnidia) as bioindicators in the assessment of biological integrity of neotropical streams

Ecology of water mite assemblages in Panama – First data on water mites (Acari, Hydrachnidia) as bioindicators in the assessment of biological integrity of neotropical streams

An Initial Classification of Neotropical Water Mites (Acari: Hydrachnidia) Based on Habitat Preferences

Responses of water mite assemblages (Acari) to environmental parameters at irrigated rice cultivation fields and native lakes

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