Results 201 to 210 of about 28,195 (243)
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2018
The individual Artemia populations vary considerably with respect to their tolerance for waters of different ionic compositions. Ecological isolation among these populations occurs because of an intolerance for each other's natural habitat due to differences in lakewater chemistry. The Artemia of the New World are bisexual and with the exception of one
Petra H. Lenz, Robert A. Browne
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The individual Artemia populations vary considerably with respect to their tolerance for waters of different ionic compositions. Ecological isolation among these populations occurs because of an intolerance for each other's natural habitat due to differences in lakewater chemistry. The Artemia of the New World are bisexual and with the exception of one
Petra H. Lenz, Robert A. Browne
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Satellite DNA in the crustacean Artemia
Gene, 1986We have isolated a satellite fraction from the Artemia genome by both restriction endonuclease digestion and equilibrium density centrifugation in CsCl gradients containing ligand dye Hoechst 33258. Satellite DNA was arranged in long stretches (approx. 23 kb) of tandem repeats of a basic unit of 113 bp.
J, Cruces +4 more
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Diguanosinetetraphosphate guanylohydrolase in Artemia salina
Biochimica et Biophysica Acta (BBA) - Enzymology, 19741. The diguanosinetetraphosphate guanylohydrolase (EC 3.6.1.17) of Artemia salina has been found to be located in the cytosol while its substrate, diguanosine tetraphosphate, is in the sediment. 2. Two spectrophotometric methods have been developed to study this enzyme.
Vallejo, Carmen G. +2 more
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GMP reductase in Artemia salina
Biochimica et Biophysica Acta (BBA) - Enzymology, 1974Abstract 1. 1. A GMP reductase (NADPH:GMP oxidoreductase (deaminating), EC 1.6.6.8) activity has been characterized, and partially purified, in Artemia salina extracts. The enzyme is specific for NADPH, has a k m of 0.01 mM for GMP, is maximally active at a pH value of approx. 8.5, requires thiol groups and is resistant to heating at
M F, Renart, A, Sillero
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Comparative Toxicokinetics of Cadmium in Artemia
Archives of Environmental Contamination and Toxicology, 2005The toxicokinetics of cadmium was determined for five populations belonging to four species of Artemia (A. salina, A. parthenogenetica, A. franciscana, and A. persimilis) using a bicompartmental model. The effects of sublethal cadmium concentration on the kinetic parameters in A. parthenogenetica were determined. The BCF values are inversely related to
R, Sarabia +6 more
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Effect of methylparaben in Artemia franciscana
Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2017In this study, the toxicity of methylparaben (MeP) an emerging contaminant, was analysed in the sexual species Artemia franciscana, due to its presence in coastal areas and marine saltworks in the Mediterranean region. The acute toxicity (24h-LC50) of MeP in nauplii was tested and its chronic effect (9days) evaluated by measuring survival and growth ...
Comeche Sanz, Amparo +3 more
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2016
The crustacean Artemia franciscana is able to switch between two different reproductive ways controlled by environmental cues: adult females can produce embryos in their ovisac, coated with a thin cuticle shell layer, ready to hatch immediately or metabolically inactive eggs, namely cysts, which undergo diapause in a late gastrula stage.
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The crustacean Artemia franciscana is able to switch between two different reproductive ways controlled by environmental cues: adult females can produce embryos in their ovisac, coated with a thin cuticle shell layer, ready to hatch immediately or metabolically inactive eggs, namely cysts, which undergo diapause in a late gastrula stage.
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2018
Scanning electron microscopy provided much details to the external morphology of Artemia. The whole body of Artemia is covered by an extremely thin exoskeleton. In the larval stages the cuticle is 0.3 to 1.0 µm thin and probably has a similar appearance in all regions of the integument.
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Scanning electron microscopy provided much details to the external morphology of Artemia. The whole body of Artemia is covered by an extremely thin exoskeleton. In the larval stages the cuticle is 0.3 to 1.0 µm thin and probably has a similar appearance in all regions of the integument.
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Aquaculture, 1993
Abstract Artemia sp. were grown to pre-adult on diets consisting of bacteria, bacteria plus algae, and algae alone. There was little difference in survival among Artemia grown on these diets, but significant differences in length and dry weight were observed.
Pablo Intriago, D.A. Jones
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Abstract Artemia sp. were grown to pre-adult on diets consisting of bacteria, bacteria plus algae, and algae alone. There was little difference in survival among Artemia grown on these diets, but significant differences in length and dry weight were observed.
Pablo Intriago, D.A. Jones
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Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1990
Abstract 1. 1. Isozyme patterns of 24 and 72 hr post-hydration Artemia uromiana (AU) nauplii and adults AU were compared with other bisexual and parthenogenetic Artemia strains using isoelectric focusing of proteins. 2. 2. Esterase (EST) and phosphoglucose isomerase (PGI) patterns reveal bisexual and parthenogenetic Artemia inhabit ...
Mohammad Reza Ahmadi +2 more
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Abstract 1. 1. Isozyme patterns of 24 and 72 hr post-hydration Artemia uromiana (AU) nauplii and adults AU were compared with other bisexual and parthenogenetic Artemia strains using isoelectric focusing of proteins. 2. 2. Esterase (EST) and phosphoglucose isomerase (PGI) patterns reveal bisexual and parthenogenetic Artemia inhabit ...
Mohammad Reza Ahmadi +2 more
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