نتایج جستجو برای: chironomid genera

تعداد نتایج: 28194  

Journal: :iranian journal of science and technology (sciences) 2005
m. ebrahimnezhad

to date, no comprehensive study has been carried out on the chironomid larvalidentification in running waters of the country, in particular in large rivers. therefore, this article is thefirst of its kind in iran that has come out in english. samples were collected in 9 sites from thezayandehrood river a distance of 230 km down the zayandehrood dam. the sampling was repeatedfour times: november...

Journal: :Environmental toxicology and chemistry 2002
Erin O Swansburg Wayne L Fairchild Brian J Fryer Jan J H Ciborowski

The effect of metal enrichment on chironomid communities was examined in streams receiving mine drainage from metal mining operations in New Brunswick, Canada. At five sites receiving mine drainage, metal concentrations were significantly (p < 0.05) elevated in water (Zn), periphyton (Cd, Co, Cu, and Zn), and chironomid tissue (Cu, Cd, and Zn) relative to five paired reference locations. Metal ...

Journal: :Medical Entomology and Zoology 2002

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2002
J Higuti A M Takeda

Chironomid larvae were collected and abiotic variables measured at monthly intervals at 21 sampling stations in two lagoons (Guaraná and Patos) and two tributaries (Baía and Ivinheima) of the Upper Paraná River floodplain. The genera Procladius, Chironomus, Goeldichironomus, and Polypedilum were dominant in the lagoons and in the Baía River, while Cryptochironomus and Lopescladius were more dom...

Journal: :Annales de Limnologie - International Journal of Limnology 2017

Chironomidae is one of the most important elements of the aquatic benthos all over the world, which has its own ecological and biological importance in different aspects. The present study has been conducted to investigate the chironomid diversity in Taleghan River in two seasons, spring and summer 2016 for six sampling points (Asfaran, Varkesh, Mir, Jostan, Barikan and Gooran). The sampling pr...

2007
S. Engels M. Nyman

Floodplain lakes are rarely analysed for fossil chironomids and usually not incorporated in modern chironomid-climate calibration datasets because of the potential complex hydrological processes that could result from flooding of the lakes. In order to investigate this potential influence of river inundations on fossil chironomid assemblages, 13 regularly inundated lakes and 20 lakes isolated f...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2010
S S Morais J Molozzi A L Viana T H Viana M Callisto

The Chironomidae (Diptera: Insecta) have a high species richness, with species adapted to live under widely different environmental conditions. The study of the taxonomic composition of chironomid larvae and the percentage of occurrence of deformities in mouthparts, mainly in the mentum, are used in biomonitoring programmes in order to obtain information on the levels of organic and chemical po...

Arezoo Azimi Mohammad Sudagar Rasool Maleknejad,

In this study, the effect of diet food (soybeans, egg yolk and chicken manure) on biomass weight and body composition (the amount of protein, fat, moisture and ash) Chironomid larvae were examined. For this purpose, 2.5 grams of food per Coconut considered in the period, with three replicates and Chironomid larvae during the period of 15 days in plastic pans were kept in nutrition. The results ...

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