نتایج جستجو برای: rotifer distribution

تعداد نتایج: 609210  

Journal: :Journal of Ecophysiology and Occupational Health 2021

Kashmir traditionally known as heaven on earth for its beauty is gifted with water resources comprising rivers, lakes, streams and springs. Lakes provide a multitude of uses are prime regions human settlement habitat. One such body Khushalsar Lake located in the downtown area Srinagar city. It noticed that at present has fallen victim to extensive encroachment, garbage dumping release untreated...

2013
Beata Klimek Edyta Fiałkowska Wioleta Kocerba-Soroka Janusz Fyda Mateusz Sobczyk Agnieszka Pajdak-Stós

The aim of the study was to assess the toxicity of a range of trace metals to the rotifer Lecane inermis, a species tested as a potential biological tool to control activated sludge bulking caused by overgrowth of filamentous bacteria in wastewater treatment plants. LC50 values (concentration lethal to 50 % of individuals, mg dm(-3)) were ranked in the following order: Cu < Al < Fe < Zn < Sn < ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
E Paige Stout James J La Clair Terry W Snell Tonya L Shearer Julia Kubanek

Steroids play fundamental roles regulating mammalian reproduction and development. Although sex steroids and their receptors are well characterized in vertebrates and several arthropod invertebrates, little is known about the hormones and receptors regulating reproduction in other invertebrate species. Evolutionary insights into ancient endocrine pathways can be gained by elucidating the hormon...

ژورنال: بوم شناسی آبزیان 2018

This study evaluated the acute toxicity of herbicide paraquat and the insecticide permethrin and their impacts on growth and reproduction of freshwater rotifers Brachionus calyciflorus according to the guidelines OECD. The acute toxicity (LC50 24h) of paraquat and permethrin on freshwater rotifers B. calyciflorus were 0.541 and 8.997 mg l-1, respectively. The level of exposure responses of roti...

Journal: :Molecular biology and evolution 2009
Jae H Hur Karine Van Doninck Morgan L Mandigo Matthew Meselson

Rotifers of Class Bdelloidea are abundant freshwater invertebrates known for their remarkable ability to survive desiccation and their lack of males and meiosis. Sequencing and annotation of approximately 50-kb regions containing the four hsp82 heat shock genes of the bdelloid Philodina roseola, each located on a separate chromosome, have suggested that its genome is that of a degenerate tetrap...

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