Results 51 to 60 of about 11,595 (226)

Ecotoxicological Assessment of Mercury in Fish From a Gold‐Mining‐Impacted Amazonian River: Biomonitoring and Human Health Risk

Environmental Toxicology, EarlyView.
ABSTRACT The Peixoto de Azevedo River, located in northern Mato Grosso, southern Brazilian Amazon, has a long history of artisanal and small‐scale gold mining (ASGM). This study evaluated total mercury (THg) concentrations in fish tissues to assess biomagnification and potential risks.
Augusto Cesar da Costa Castilho, Kleber Solera, Vinícius José Santos Lopes, Gleyce Alves Machado, Ricardo Lopes Tortorela de Andrade, Leandro Dênis Battirola   +5 more
wiley   +1 more source

Influence of Using Some Sources of Live Aquafeeds on the Performance of European Sea Bass (Dicentrarchus labrax L.) [PDF]

Journal of Animal and Poultry Production
Impact of using rotifers Brachionus plicatilis and Artemia nauplii as a live feed on growth and survival % of European sea bass larvae (Dicentrarchus labrax) was investigated. Sea bass weighing 2.4 ± 0.10 mg and 2.3 ± 0.1 mm body length were placed in 12
Ola Mahmoud, R. Abou Zied, A. Ali, M. Sadek   +3 more
doaj   +1 more source

Enhancement of planktonic rotifers by Microcystis aeruginosa blooms: An enclosure experiment in a shallow eutrophic lake [PDF]

, 2002
Enclosure experiments with three treatments (sediment addition, sediment + nitrogen enrichment, sediment + phosphorus enrichment) and unfertilized controls were performed in shallow hypereutrophic Lake Donghu during the summer of 2000.
Hong Liu, Feizhou Chen, Xie, P, Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China, Huijuan Tang, Liqiang Xie, Ping Xie   +5 more
core  

Invasive goldfish trigger a regime shift in experimental lake ecosystems of varying trophic state

Journal of Animal Ecology, EarlyView.
The pet trade distributes exotic animals around the globe that enrich human lives. However, some pets become pests when released into the wild. This study provides experimental evidence that goldfish will negatively affect native freshwater organisms and ecosystems.
William D. Hintz, Hannah Barrett, Rick A. Relyea   +2 more
wiley   +1 more source

Tidal Impacts on Zooplankton Dynamics in a Major Ocean-Lagoon Channel: Insights from a 25-Hour Intensive Survey in the Cotonou Channel, Benin

Journal of Marine Science and Engineering
This study investigates the effects of tidal cycles on the zooplankton community within the Cotonou Channel, an important waterway connecting the large Nokoué Lagoon to the Atlantic Ocean in Benin.
Hervé Hotèkpo Akodogbo, Fridolin Ubald Dossou-Sognon, François Talomonwo Ouinsou, Thalasse Tchémangnihodé Avocegan, Junior Patric Kouglo, Olaègbè Victor Okpeitcha, Arnaud Assogba, Zacharie Sohou, Yves Morel, Alexis Chaigneau   +9 more
doaj   +1 more source

FINE STRUCTURE OF THE CILIA OF ROTIFERS [PDF]

The Journal of Cell Biology, 1961
The fine structure of the coronal cilia of the rotifer Philodina citrina has been studied in detail. Specimens were fixed with OsO4 and embedded in butyl—methyl methacrylate, Epon 812, or Vestopal and sectioned with a Porter-Blum microtome. The details of structure of the rootlets, basal bodies, basal plates, and free cilia are described.
A I, LANSING, F, LAMY
openaire   +2 more sources

A new predatory hyphomycete capturing bdelloid rotifers in soil [PDF]

, 1983
Cephaliophora navicularis, a hyphomycete capable of capturing bdelloid rotifers by using specialized adhesive pegs, is described as new. Canoe-shaped conidia are produced synchronously on ovoid- to club-shaped ampullae that arise more or less directly ...
S. S. Tzean, G. L. Barron
core   +1 more source

Compromised DNA replication in gut cells underlies sensitivity to genotoxic stress in the tardigrade Hypsibius exemplaris

The FEBS Journal, EarlyView.
DNA damage in the tardigrade Hypsibius exemplaris elicits distinct cellular outcomes depending on replication status. While non‐replicating cells tolerate genotoxic stress, constitutively replicating cells undergo irreversible replication failure upon DNA damage, leading to loss of tissue homeostasis, fat depletion, sterility, and organismal death ...
Gonzalo Quiroga‐Artigas, Pauline Fontanié, Benjamin Lacroix, Maria Dolores Molina, María Moriel‐Carretero   +4 more
wiley   +1 more source

Zooplankton biodiversity and community structure vary along spatiotemporal environmental gradients in restored peridunal ponds

Journal of Limnology, 2015
Zooplankton assemblages in neighboring ponds can show important spatial and temporal heterogeneity. Disentangling the influence of regional versus local factors, and of deterministic versus stochastic processes has been recently highlighted in the ...
Maria Anton-Pardo, Xavier Armengol, Raquel Ortells   +2 more
doaj   +1 more source

A Preliminary Survey on the Planktonic Biota in a Hypersaline Pond of Messolonghi Saltworks (W. Greece)

Diversity, 2021
During a survey in 2015, an impressive assemblage of organisms was found in a hypersaline pond of the Messolonghi saltworks. The salinity ranged between 50 and 180 ppt, and the organisms that were found fell into the categories of Cyanobacteria (17 ...
George N. Hotos
doaj   +1 more source