Results 51 to 60 of about 62,652 (241)

Pulgas-de-água (Daphnia spp.) [PDF]

open access: yesRevista de Ciência Elementar, 2017
Daphnia spp. (pulgas-de-água) - Os organismos do género Daphnia são micro-crustáceos planctónicos de água doce pertencentes à ordem Cladocera (classe Branchiopoda), que ocorrem em ecossistemas lênticos. Devem o nome de “pulga-de-água” aos movimentos natatórios irregulares, análogos aos saltos das pulgas “verdadeiras”.
Bruno Castro, Sara Antunes
openaire   +2 more sources

Magnetic Pinecone Biochar‐Activated Peroxymonosulfate for Efficient Sulfamethoxazole Degradation: Performance, Mechanism, and Toxicity Analysis

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study successfully prepared magnetic iron/cobalt codoped biochar catalyst (CFSBC) using a one‐step calcination method. The morphology and structure of the material were systematically characterized using SEM, XRD, FTIR, TEM, BET, Raman, VSM, and XPS techniques. The effects of key parameters such as catalyst dosage, peroxymonosulfate (PMS)
Jianhua Ni   +3 more
wiley   +1 more source

Evaluation of Abundance of Dead Crustacean Zooplankton in a Water Body Using Staining of the Samples by Aniline Blue Technique: Methodological Aspects [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2008
Three long special experiments with killed by heating copepodites of Cyclops vicinus, Mesocyclops leuckarti (experiments 1 and 2), of Cyclops vicinus and Daphnia longispina group of different sizes and stages (experiment 3) were carried out to test an ...
Olga P. Dubovskaya
doaj  

Episodic zooplanktivory by largemouth bass (Micropterus salmoides) on Daphnia: a 25-year natural history record from a small northern temperate lake

open access: yesJournal of Freshwater Ecology, 2020
We observed episodic zooplanktivory by largemouth bass (Micropterus salmoides; LMB) ≥ 150 mm total length (TL) on the cladoceran Daphnia spp. over two decades in a small oligotrophic lake. While zooplanktivory is beneficial for young-of-year and juvenile
Tyler J. Butts   +3 more
doaj   +1 more source

wFleaBase: the Daphnia genome database [PDF]

open access: yesBMC Bioinformatics, 2005
Abstract Background wFleaBase is a database with the necessary infrastructure to curate, archive and share genetic, molecular and functional genomic data and protocols for an emerging model organism, the microcrustacean Daphnia.
Singan Vasanth R   +2 more
openaire   +3 more sources

Integration of Nutrition and Organic Agriculture Framework in Managing Gastrointestinal Nematodes in Ruminants

open access: yesAnimal Research and One Health, EarlyView.
Gastrointestinal nematode infections damage the gastrointestinal epithelial tissues of ruminants, affecting nutrient utilization and overall production performance. This review outlines host‐gastrointestinal nematode interactions and discusses integrated control strategies, including nutritional supplementation, grazing management, vaccines, and ...
Wenxun Chen   +5 more
wiley   +1 more source

Using a new high-throughput video-tracking platform to assess behavioural changes in Daphnia magna exposed to neuro-active drugs [PDF]

open access: yes, 2019
© 2019. ElsevierOne of the major challenges that faces today regulatory risk assessment is to speed up the way of assessing threshold sublethal detrimental effects of existing and new chemical products.
Barata Martí, Carlos   +8 more
core   +1 more source

The Daphnia bioassay: a critique [PDF]

open access: yesHydrobiologia, 1989
Daphnia magna is used widely as a standard ecotoxicological indicator organism, and protocols exist for its use in assessing the toxicity of substances under acute and chronic experimental conditions. Problems exist in repeatability of such bioassays between laboratories.
Baird, Donald J.   +4 more
openaire   +2 more sources

Loss, persistence and reversal of phenotypic traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni   +4 more
wiley   +1 more source

Dispersion and sedimentation of titanium dioxide nanoparticles in freshwater algae and daphnia aquatic culture media in the presence of arsenate

open access: yesJournal of Experimental Nanoscience, 2018
Little information is available on Titanium dioxide nanoparticles (nTiO2) behavior in different culture media for aquatic organisms. This study aimed to accurately evaluate nTiO2 dispersion and sedimentation in common freshwater algae (BG-11) and daphnia
Zhenhong Wang, Zhuanxi Luo, Yamen Yan
doaj   +1 more source

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