Results 31 to 40 of about 62,652 (241)

Environmental DNA tracks zooplankton population dynamics in experimental mesocosms

open access: yesEnvironmental DNA, 2023
Environmental DNA (eDNA) holds notable potential for biomonitoring and ecological research. However, its utility for quantifying temporal changes in abundance, biomass, and diversity remains contentious.
Danielle A. Bourque   +5 more
doaj   +1 more source

Water quality changes in Lake Pskovskoe (2000–2018)

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2020
Changes in the water quality of Lake Pskovskoe in 2000–2018 are considered. The water quality assessment employed a new ecotoxicological approach to comprehensive assessment of surface water pollution based on the risk of death from exposure to a wide ...
Grigory Frumin, Natalia Malysheva
doaj   +1 more source

Food quantity and quality shapes reproductive strategies of Daphnia

open access: yesEcology and Evolution, 2022
In freshwater environments, one of the challenges aquatic grazers face are periods of suboptimal food quantity and quality. In a life table experiment, the effects of food quantity (a gradient of algae concentration) and quality (a diet of cyanobacteria)
Anna Bednarska
doaj   +1 more source

Herbisit Glifosatın Daphnia magna Üzerine Akut Toksisitesi

open access: yesJournal of Agricultural Sciences, 2009
Bu çalışmada, Daphnia magna üzerinde, %48 glifosat içeren Roundup isimli herbisitin, 24 ve 48 saatlik ortalama öldürücü konsantrasyonları LC50 saptanmıştır.
Süleyman Bekcan, Zeynep Sarıgül
doaj   +1 more source

Annotation of the Daphnia magna nuclear receptors: Comparison to Daphnia pulex [PDF]

open access: yesGene, 2014
Most nuclear receptors (NRs) are ligand-dependent transcription factors crucial in homeostatic physiological responses or environmental responses. We annotated the Daphnia magna NRs and compared them to Daphnia pulex and other species, primarily through phylogenetic analysis. Daphnia species contain 26 NRs spanning all seven gene subfamilies.
Elizabeth J, Litoff   +6 more
openaire   +2 more sources

Experimental analysis of polymorphic microsatellite loci in Cladocera: mixed breeding strategy and population dynamics [PDF]

open access: yesПисьма в Вавиловский журнал генетики и селекции
The aim of this work is to identify polymorphic loci in Daphnia genomes using genome sequence analysis and experimental analysis of real accessions of samples collected in nature. We use primers predicted by an algorithm for DNA amplification from Daph-
Poroshina A.A., Sherbakov D.Yu.
doaj   +1 more source

Introducing of the methods of pollutants detecting and species used as experiment organisms in testing laboratories (ro) [PDF]

open access: yesMedicamentul Veterinar, 2012
Zebrafish are vertebrate animals often used in research for wastewaters, environment chemicals, cancer and diabetes drugs due to their speed and ease for handling and obtaining test results.
Romeo T. Cristina   +2 more
doaj  

Apprendre à voir, apprendre à dire

open access: yesArts et Savoirs, 2017
The emergence of a microscopic science in the 18th century was marked by an attempt to standardize the methods of observation and also of description. How can these methods be shared?
Nathalie Vuillemin
doaj   +1 more source

Inference of Historical Population-Size Changes with Allele-Frequency Data

open access: yesG3: Genes, Genomes, Genetics, 2020
With up to millions of nearly neutral polymorphisms now being routinely sampled in population-genomic surveys, it is possible to estimate the site-frequency spectrum of such sites with high precision.
Michael Lynch   +3 more
doaj   +1 more source

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