daphnia


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Related to daphnia: Daphnia pulex
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Synonyms for daphnia

minute freshwater crustacean having a round body enclosed in a transparent shell

References in periodicals archive ?
However, given the sensitivity of these organisms, many other factors possibly led to this result, such as concentration of toxic substances to Daphnia, including chlorpyrifos degradation products, organic acids and even pathogenic microorganisms.
That research produced five populations of Daphnia adapted to salt concentrations ranging from the current concentration of 15 milligrams per liter of chloride in Lake George, to concentrations of 1,000 milligrams per liter as found in highly contaminated lakes in North America.
Arastirmada Tablo 1'de goruldugu gibi Rotifera'ya ait turlerden Dicranophorus epicharis (%32,14), Keratella quadrata (%16,96), Anuraeopsis fissa (%9,77), Cladocera'ya ait turlerden Chydorus sphaericus (%7,25), Daphnia longispina (%1,20) organizma gruplari icerisindeki baskin turler olarak belirlenmistir.
Higher predation pressure by juveniles on Daphnia and Ceriodaphnia, in comparison to adults, was also found by another studies (Scott and Murdoch, 1983; Murdoch and Scott, 1984), differing from Gilbert and Bums (1999), who found that large instars of notonectids preyed on more cladocerans than small ones.
Cladoceran abundances exhibited two peaks with the first of the two consisting of primarily Daphnia retrocurva and Bosmina and the second Eubosmina and Diaphanasoma (Fig.
The organisms Lemna minor, Azolla caroliniana, Daphnia magna and Hyphessobrycon eques showed potential to be used as bioindicators of ethanol effetcs in water bodies, specially the Pomacea canaliculata snail, which had presented elevated sensibility to small ethanol concentrations.
These EQCs are derived from the most sensitive endpoint determined during studies of sentinel species--typically fish, daphnia and algae.
Keywords: Daphnia magna, gill epithelium, membrane infoldings, mitochondria, rough endoplasmic reticulum, dense tubules, multivesicular bodies, coated vesicles, cuticle, lysosomes
In the study, the researchers exposed Daphnia to 0.
Where in a garden might you find a daphnia, and why?
Aims of the Research are the study of the influence of structure of aliphatic n-alcohols, phenols, sodium salts of a-alkoxycarbonylsulfuric acids and their mixtures on toxicity towards Daphnia magna using simplex representation of the molecular structure and the determination of molecular fragments with positive or negative influence on the toxicity.
5,3 mg/l 48 h, en Daphnia y otros invertebrados acuaticos: EC50--Daphnia pulex (Waterflea) - 1,44 mg/l - 48 h.
cornuta y Daphnia gessneri, en donde mostraran distintos efectos en la tasa de crecimiento y reproduccion.
The Daphnia waterfleas will become the first animals from UK waters to go into space when they are sent to the International Space Station (ISS) as part of a schools' science project.