Chemical interference by Daphnia on Keratella: a life table experiment
نویسندگان
چکیده
منابع مشابه
Effects of physical interference on life history shifts in Daphnia pulex.
Daphnia pulex were reared in 50 ml flasks, each containing 1, 20 or 40 individuals, which were serially connected with a 20-mum mesh screens between, in order to examine the effect of physical interference due to crowding on shifts of life history traits throughout two consecutive generations. A flow-through system, designed to maintain a sufficient food supply and minimize the accumulation of ...
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In 1992, I wrote an article on a method of modifying the Decennial US Life Table to accommodate any pattern of excess mortality expressed in terms of excess death rate (EDR), for the specific purpose of calculating the reduced life expectancy, e. I believe this was the first article published in the Journal of Insurance Medicine (JIM) that dealt specifically with life expectancy as an index of ...
متن کاملGenomic Response in Daphnia to Chemical Pollutants
Chemicals released into the environment have a potential to affect on various species and evaluation of the impacts on ecosystems including aquatic organisms is urgent issue. In order to evaluate chemical effects on various species, it is important to understand their mode of action. Recent advances in toxicogenomics, the integration of genomics into toxicology is promising for understanding mo...
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چکیده ندارد.
15 صفحه اولResource quality effects on life histories of Daphnia
We investigated the changes in life histories imposed on the water flea, Daphnia magna, due to biochemical and mineral limitations. Phosphorus-deficient Scenedesmus obliquus were incubated with or without a single essential fatty acid, eicosapentaenoic acid (EPA). Additionally, the algae were spiked with dissolved phosphorus to create a range of C : P ratios from 600 to 200. This procedure crea...
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ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 1998
ISSN: 0142-7873,1464-3774
DOI: 10.1093/plankt/20.8.1637