Results 181 to 190 of about 6,143 (232)

Fish predation pressure on and interactions between cladocerans: Observations using enclosures in three temperate lakes (Germany) and one tropical lake (Ethiopia) [PDF]

Limnologica, 2001
Observations were made on the response of cladocerans to fish predation and the interactions among cladocerans using enclosure experiments in three temperate lakes (Germany) and one tropical lake (Ethiopia).
Rainer Koschel, Brook Lemma, Jürgen Benndorf   +2 more
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Toxicity of fluoroquinolones on the cladoceran Daphnia magna

Water Environment Research, 2021
AbstractThis study evaluates the acute and chronic toxicological effects of six fluoroquinolones on the mortality and growth of Daphnia magna. The NOECs calculated with the multivariate Probit regression model for the chronic study were 56 μg/L ciprofloxacin, 63 μg/L enrofloxacin, 78 μg/L levofloxacin, 85 μg/L marbofloxacin, 69 μg/L norfloxacin, and ...
Dafna Eluk, Orlando Nagel, Ana Gagneten, Ulises Reno, Rafael Althaus   +4 more
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The future of cladoceran research

Hydrobiologia, 1997
The cladocerans are a group of Crustacea used as model organisms in many fields of biology. In system-atics, ecology, physiology and genetics, the cladocerans appear as frequently used examples in case studies. Their reproductive system, switching between parthenogenesis and sexual reproduction, makes them particularly suited for studies dealing with ...
Petter Larsson, Maria Rosa Miracle
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Review of Recent Ecotoxicological Studies on Cladocerans

Journal of Environmental Science and Health, Part B, 2006
Cladocerans have been widely used as the bioassay organisms in evaluating the impact of different toxic substances. Literature survey during the last 10 years revealed that cladoceran ecotoxicological research has been in an exponential phase constituting nearly 10% of publications on this group.
S S S, Sarma, S, Nandini
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Succession of cladocerans in a northern Italian ricefield

Hydrobiologia, 1991
The seasonal succession of cladocerans was studied in an experimental ricefield (never treated with biocides) located on the Po River Plain (Province of Reggio Emilia) in 1982, the first year of rice cultivation, and in two later years, 1984 and 1986.
FERRARI, Ireneo, BACHIORRI, Antonella, MARGARITORA F. G., ROSSI, Valeria   +3 more
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The Genomics of Cladoceran Physiology

2017
Recent advances in genomic approaches and their increasing application to a wide range of taxa are contributing to the rapid development of the field of physiological genomics. Understanding the relationship between organisms and their environment is central to this field that focuses on genomic exploration of the physiological mechanisms that underlie
K. Van Damme, D. Becker, E. Turner, J. R. Shaw, J. K. Colbourne, B. Zeis, M. Cordellier, E. Decaestecker, Michael E. Pfrender   +8 more
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Ecotoxicity of nanosilver on cladocerans and the role of algae provision

Environmental Science and Pollution Research, 2022
Silver nanoparticles (AgNPs) are applied in diverse industries due to their biocide and physicochemical properties; therefore, they can be released into aquatic systems, interact with environmental factors, and ultimately exert adverse effects on the biota.
Victoria Soledad Andrade, Analía Ale, Pablo Edmundo Antezana, Martín Federico Desimone, Jimena Cazenave, María Florencia Gutierrez   +5 more
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Comparative phylogeography of marine cladocerans

Marine Biology, 2008
We examined the population genetics of six species of marine cladocerans, using a ~600 bp fragment of the cytochrome oxidase subunit I gene sequence. Phylogenetic analysis revealed significant intraspecific, semi-allopatric phylogenetic breaks in four out of five species belonging to the Podonidae, supporting an ancient radiation and oceanic expansion ...
Alan Durbin, Paul D. N. Hebert, Melania E. A. Cristescu   +2 more
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STATISTICAL ANALYSIS OF THE CLADOCERAN REPRODUCTIVITY TEST

Environmental Toxicology and Chemistry, 1986
AbstractThe data from a renewal toxicity test are awkward to interpret if some of the adult organisms die during the experiment. The usual summary statistic is the mean number of young produced per adult, but when some adults die, the mean can be defined in two different ways, the mean overall (MOA) and the mean ignoring mortality (MIM).
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Cladoceran assemblages in a mineralization gradient

Hydrobiologia, 2001
Cladoceran assemblages were studied in littoral samples from 44 water bodies in Central Spain, showing great differences in salinity and permanence of water. Principal component analyses (PCA) were performed with data on cladoceran relative abundances to identify the main groups of species. Five main groups of species were found, defining the following
Loles Boronat, Maria R. Miracle, Xavier Armengol   +2 more
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