Linking measures of immune function with infection, and ultimately, host and parasite fitness is a major goal in the field of ecological immunology. In this study, we tested for the presence and timing of a cellular immune response in the crustacean Daphnia magna following exposure to its sterilizing endoparasite Pasteuria ramosa. We found that D. magna possesses two cell types circulating in t...

Microplastic pollution is a problem not only in the marine environment but also freshwater ecosystems. Water flea (Daphnia magna) one of most common omnivorous cladocerans In this study, potential effects microplastics (fluorescent polystyrene beads with dimensions 6 microns) on survival, growth and reproduction Daphnia magna were examined during 21 days laboratory experiments. Microplastics (M...

this study was carried out to evaluate the effect of commercial live bakery’s’ yeast( saccharomyces cerevisiae ), (marketed as amax), on growth and survival of persian sturgeon( acipenser persicus) larvae (74.9 ± 9.7mg) during 30 days. sturgeon larvae were fed on daphnia magna enriched at three suspensions of yeast, amax, (0, 50, 100, and 150 mg yeast per litter). the feeding level was 30 perce...

Freshwater zooplankton is increasingly used to study effects of dispersal on community and metacommunity structure. Yet, it remains unclear how zooplankton disperses. Clearly, birds and wind play a significant role as zooplankton dispersal agents, but they may not always be the main vectors. This experimental study shows that a cosmopolitan aquatic insect, Notonecta, can be an important vector ...

One of the most important aims of aquatic hatcheries is availability to mass produce of Daphnia magna as a live food with high nutritional value in the shortest time. In the present study, D. magna fed with two freshwater green algae species, Chlorella sp. and Scenedesmus obliquus, enriched with different dosages of a mixture B group vitamins (0, 0.5, 1 and 2 ml.l) were compared at two stages (...

This research aimed to know the effect of quail manure on an abundance Daphnia magna. The method for D. magna was a Completely Randomized Design (CRD) with four settings, each repeated times, namely use P0 (Control without fertilizer), P1 (Quail fertilize 1 g/L), P2 3 P3 5 g/L). cultured 15 days in container volume liters. updated parameters were magna, mortality and water quality. results anal...

We examined the tolerance development to mercury (Hg) by a population of freshwater zooplankton (Daphnia magna) with different pre-exposure histories to Hg. The growth and reproductive performance of the F1 offspring as affected by the maternal (F0) and offspring (F1) exposures was quantified. The F0 daphnids exposed to 2.5 and 25 nM of Hg for 4 d and followed by 4 d of depuration had elevated ...