نتایج جستجو برای: hydropsyche
تعداد نتایج: 79 فیلتر نتایج به سال:
To study the macrobenthos of the lower reaches of Zayandehrud River, a distance of approximately 160 km, between Birds Garden and Varzaneh Town was investigated. Hence, eight stations, based on substrate structure, were selected using Sorber and Ekman samplers and PVC tube macrobenthos of the river were collected twice each season for a full year (2003-2004). Samples were sorted out and identif...
چکیده بهمنظور مطالعه و شناسایی فون ماکروبنتوزهای چشمه دادین کازرون واقع در جنوب غربی فارس در ایران از فروردین تا اسفند سال 1393، نمونهگیری از پنج ایستگاه مختلف چشمه شامل مرکز، شمال، جنوب، غرب و شرق چشمه انجام گردید. نمونهبرداری از رسوبات با استفاده از گرب مدل ون وین انجام شدند. پس از شستشوی رسوبات برای جلوگیری از فساد موجودات زنده با استفاده از فرمالین یک درصد تثبیت و سپس شناسایی ماکروبنتوزه...
This research provides pivotal molecular genetic data on the community structure of aquatic insects from semi-mountainous and mountainous rivers 6 th Ecoregion that belongs to territory North Macedonia. The aim this is fill gaps for barcoding macroinvertebrates Balkan Peninsula check if existing barcode library could provide improved identifications specimens were not taxonomically determined l...
The effectiveness of mine-waste remediation at the Clark Fork River Superfund site in western Montana, USA, was examined by monitoring metal concentrations in resident biota (caddisfly, Hydropsyche spp.) and bed sediment over a 19-year period. Remediation activities began in 1990 and are ongoing. In the upper 45 km, reduced Cu and Cd concentrations at some sites were coincident with remediation...
Pathogenic fungi are important natural regulators of insect populations. However, many attempts to harness their potential for pest control have met with comparatively minor commercial success. Studies on mechanisms of pathogenesis have yet to contribute to the development of more efficient mycoinsecticides, but new insights into the pathogenic process are laying the groundwork. Significant pro...
insects with over 30,000 aquatic species are known as very successful arthropods in freshwater habitats. some of them are applied as biological indicators for water quality control, as well as the main food supply for fishes and amphibians. the faunistic studies are the basic step in entomological researches; the current study was carried out emphasizing on the fauna of aquatic insects in karaj...
have become an object of general concern and even acquired a certain fashionable notoriety particularly in the USA. The most celebrated of the new generation of mycotoxins so far has been aflatoxin. It was first implicated in diseases of domestic animals-turkeys and other fowl fed on contaminated groundnut meal, and subsequently cattle, pigs, and sheep-by veterinarians in this country in 1960. ...
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