The ecological requirements of caddisflies larvae (Insecta: Trichoptera) and their usefulness in water quality assessment of a river in south-west Romania

Pîrvu, Mălina; Pacioglu, Octavian

doi:10.1051/kmae/2012029

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…The two Hydropsyche species (H. bulgaromanorum and H. guttata) turned out to be highly resistant to maximum nitrate levels which was revealed in the RDA analysis. Many species of this genus are known to be tolerant of contaminants, especially organic ones (Pliūrait_ e & Kesminas, 2004;Pirvu & Pacioglu, 2012), and often at levels far higher than those we measured in the Oder. This applies in particular to H. bulgaromanorum (Czachorowski & Serafin, 2004).…”

Section: Factors Influencing Trichoptera In a Large Rivermentioning

confidence: 57%

“…This also applies to caddisflies: there are no comprehensive data on the influence of groynes on caddisfly assemblages, even though caddisflies are among the more important and numerous constituents of the river benthos, occupying the largest number of trophic and microhabitat niches of all aquatic invertebrates (Holzenthal et al, 2007). They are, moreover, good indicators of a river's ecological status (Cèrèghino et al, 2001) and of water quality (Pirvu & Pacioglu, 2012). The latter aspect is particularly important in the case of the Oder: although its waters have been placed in biochemical and physical and chemical classes 2 or 3 (good or satisfactory quality), the overall quality of its waters is poor (class 4) resulting from their high nutrient levels (Lewicki, 2011;WIOŚ Wrocław, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Human impact on large rivers: the influence of groynes of the River Oder on larval assemblages of caddisflies (Trichoptera)

et al. 2018

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The influence of groynes in large rivers on caddisflies has been poorly studied in the literature. Therefore, we carried out an investigation on the 420-km stretch of the River Oder equipped with groynes. At 29 stations, we caught caddisflies in four habitats: current sites, groyne fields, riverine control sites without groynes and in the river's oxbows. We found that groyne construction increased species richness, diversity, evenness, and altered the structure of functional groups into more diversified and sustainable ones compared to the control sites. The groyne field fauna is similar to that of natural lentic habitats, but its composition is largely governed by the presence of potential colonists in the nearby oxbows. We distinguished three of the river's caddisfly assemblages. The distribution of Trichoptera was governed inter alia by the plant cover and the amount of detritus, and consequently, the food resources. Oxygen, nitrates, phosphates and electrolytic conductivity were important as well. Groynes have had positive effects for caddisflies-not only those in the river itself, but also those in its valley. They can therefore be of significance in river restoration (although originally they served other purposes), especially with respect to the radically transformed ecosystems of large rivers.

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Section: Factors Influencing Trichoptera In a Large Rivermentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Human impact on large rivers: the influence of groynes of the River Oder on larval assemblages of caddisflies (Trichoptera)

et al. 2018

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“…The sensitivity of trichopterans to environmental changes seems to be species-specific. According to Pirvu and Pacioglu (2012), various trichopteran taxa such as rhyacophilids, limnephilids and sericostomatids have a clear affinity for oxygenated and pristine waters, whereas hydropsychids are tolerant to anthropogenic disturbances. In summary, our findings support the potential usefulness of different species of insect larvae as discriminators of the quality of aquatic habitats.…”

Section: Discussionmentioning

confidence: 99%

Neglected symbionts and other metazoan invertebrates associated with molluscs from Africa's largest lake: Diversity, biotic interactions and bioindication

et al. 2022

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Freshwater molluscs are hosts for diverse metazoan symbionts. However, apart from the digenean helminths, symbionts of molluscs are underreported worldwide. Therefore, this study focused on the diversity of oligochaetes, leeches, mites, insect larvae and nematodes associated with gastropods and bivalves from Lake Victoria, East Africa. Overall, 1,633 mollusc specimens representing 14 species were sampled from the Kenyan part of the lake. Each host specimen was examined to determine co‐occurrence of symbionts (including digeneans) and other metazoan invertebrates, and their microhabitat preferences on/in the hosts. In addition, prevalence and abundance of symbionts were compared for molluscs obtained from an unpolluted site, and sites that are eutrophic and polluted with heavy metals. In total, 33 species were recovered from the molluscs: six oligochaetes, four insects, two mites, two nematodes, one leech and 18 digeneans. The nematode Daubaylia potomaca, mite Unionicola macani, leech Batracobdelloides sp., oligochaetes Chaetogaster limnaei, Dero digitata, Aulophorus africanus, Allonais paraguayensis and Ophidonais serpentina, and gorgoderid digenean larvae are new records for Lake Victoria. Moreover, the genus Bratislavia (Oligochaeta) is reported for the first time in Africa. Our results show that parasitic mites and leeches were absent from mollusc specimens that harboured chironomids. Likewise, there was no co‐occurrence of C. limnaei, D. potomaca and digeneans, suggesting that antagonistic interactions occur between the symbionts. Although co‐occurrence of mites and digeneans in individual mollusc hosts was common, the symbionts occupied different microhabitats. This study shows that prevalence and intensities of U. macani and C. limnaei, were significantly higher in hosts from the unpolluted site, compared with the polluted sites. What is more, D. potomaca and trichopteran larvae, were recorded only from the unpolluted site. The distribution of the chironomid Kiefferulus chloronatus suggests their preference for sites that are rich in organic matter and their ability to tolerate pollution. Information on antagonistic interactions between symbionts might be applicable in biocontrol, especially of digenean species that have veterinary or medical importance. Finally, this study shows a potential for the use of U. macani, C. limnaei, D. potomaca and insect larvae as discriminators of the quality of aquatic habitats.

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“…Therefore, the relevance of this group for assessing freshwater ecosystems health in central African countries, in comparison with Trichoptera or Ephemeroptera orders, is low. However, because aquatic macroinvertebrates have been successfully used in various countries to assess ecological quality of watercourses (Dallas 1997;Stuijfzand et al 1999;Dickens and Graham 2002;Houghton 2004;Souto et al 2011;Pirvu and Pacioglu 2012), it is important to dedicate time and energy to develop a biotic index system to be able to monitor changes in water and ecosystem quality in the KBNP area. Knowing that Leptophlebiidae (Adenophlebia), Hydropsychidae (Cheumatopsyche, Ethiopsyche) and Perlidae (Neoperla) are sensitive to organic pollution and require clean and well-oxygenated waters to survive in other regions of the world (Tachet et al 2003;Griffiths et al 2015), the presence of these taxa at the sampling sites could indicate a general good quality of river ecosystems.…”

Section: Faunal Diversity Of Kbnp Riversmentioning

confidence: 99%

Contribution to the knowledge of the macroinvertebrate fauna of the streams of Kahuzi-Biega National Park, Democratic Republic of Congo

François¹,

Pauls

Holzenthal

et al. 2019

African Journal of Aquatic Science

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The Albertine Rift is one of Africa's major biodiversity hotspots. However, the aquatic fauna of its western border in Democratic Republic of Congo (DRC) remains understudied and poorly characterised. Kahuzi-Biega National Park (KBNP) in DRC is a crucial link for biodiversity conservation of this hotspot; however, scientific studies of this rich biodiversity are scarce because of insecurity and harsh field conditions. In the current study, benthic macroinvertebrates communities and some environmental conditions were investigated in 10 rivers in the KBNP. Eighty-four morphospecies, belonging to 47 families and 12 orders, were sampled from 13 sites. The abundance and diversity of taxa within systematic groups varied across the study area. Spatial distribution of systematic groups was also analysed. The high morphospecies richness, characterised by the number of families and Shannon's and Simpson's Diversity Indices, recorded at some sites was probably owing to the diversity of substratum and undisturbed environmental conditions observed in these forested rivers. Conversely, some sites presented lower species richness, possibly because of unfavourable natural conditions.

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The ecological requirements of caddisflies larvae (Insecta: Trichoptera) and their usefulness in water quality assessment of a river in south-west Romania

Cited by 11 publications

References 34 publications

Human impact on large rivers: the influence of groynes of the River Oder on larval assemblages of caddisflies (Trichoptera)

Human impact on large rivers: the influence of groynes of the River Oder on larval assemblages of caddisflies (Trichoptera)

Neglected symbionts and other metazoan invertebrates associated with molluscs from Africa's largest lake: Diversity, biotic interactions and bioindication

Contribution to the knowledge of the macroinvertebrate fauna of the streams of Kahuzi-Biega National Park, Democratic Republic of Congo

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