(a.) Pertaining to water; growing in water; living in, swimming in, or frequenting the margins of waters; as, aquatic plants and fowls.
(n.) An aquatic animal or plant.
(n.) Sports or exercises practiced in or on the water.
Example Sentences:
(1) In a number of bacteriological drinking water analyses, this property was confirmed insofar as aquatic myxobacteria could regularly be demonstrated when inspecting hygienically deficient wells or springs.
(2) While the combined O2 uptake changed by a factor of 2, within the weight range under study, the aquatic O2 uptake changed 8-fold within the same range.
(3) Heavy metals are well known pollutants in the aquatic environment.
(4) In contrast to widespread distribution of PCBs in the environment, PCT residues were seldom found in samples from aquatic environments such as water and sludge and waterfowl and fish, and, if found, the levels of PCTs were so low as to be practically negligible.
(5) Neither the stock cultures nor the aquatic strains were capable of growth in autoclaved river water taken above the sewage outfall at the three temperatures tested.
(6) Hydrotherapy is based on several important bioengineering principles that permit the design and development of aquatic exercise devices, techniques and programs.
(7) Using zoospore capture technique, 361 colonies of aquatic freshwater fungi were recovered from sewage effluents, out of which 341 reached sexual maturity.
(8) Based on this concern, the objectives of this study were to: (1) compile, review, and synthesize literature on the fate, persistence, and environmental concentrations of DFB in both freshwater and saltwater environments; (2) compile, review, and synthesize acute and chronic aquatic toxicity data on DFB effects on freshwater and saltwater organisms; (3) assess possible risk to aquatic biota associated with the use of this insecticide in one specific area (Maryland); and (4) recommend future research based on the data gaps identified from this study.
(9) Monthly mean concentrations of dieldrin in river water and most aquatic organisms were highest in June and July, soon after aldrin had been applied to corn land in the watershed.
(10) Thus, the fern bioassay may be an inexpensive means of detecting both chronic low dose and episodic high dose inputs of mutagenic pollutants into aquatic ecosystems.
(11) Concentration factors of strontium-90 in aquatic organisms and substrates are higher in a dystrophic lake than in the other types.
(12) A minimal kinetic scheme is derived, in which a transient monodentate DNA-platinum(II) adduct is formed in a bimolecular reaction between DNA and aquated platinum(II) compounds.
(13) The substances released by algae in the profundal are taken up by aquatic bacteria which explains the lower release and PER measured.
(14) Eggs contained first-stage larvae in 23-26 days at 25 C. Seven species of aquatic oligochaetes were exposed experimentally to eggs of E. tubifex containing first-stage larvae.
(15) A gas-liquid chromatographic (GLC) method is described for determining residues of Bayer 73 (2-aminoethanol salt of 2',5-dichloro-4'-nitrosalicylanilide) in fish muscle, aquatic invertebrates, mud, and water by analyzing for 2-chloro-4-nitroaniline (CNA), a hydrolysis product of Bayer 73.
(16) The oral communications and posters were divided into five subsections, covering systematics at supraspecific, specific and subspecific levels, evolution, and life cycles of parasites with hosts in both aquatic and terrestrial environments.
(17) Their stabilities were studied in water and the influence of chloride anions, pH, temperature and time was discussed and rate constants of the aquation reactions at different conditions were calculated.
(18) Since sediments from the habitats occupied by the fish in this study have been shown to contain multiple hepatocarcinogens, the findings strengthen cumulative evidence that English sole are useful as indicators of exposure to hepatocarcinogens in aquatic environments.
(19) Aquatic plants are notoriously difficult to study systematically due to convergent evolution and reductionary processes that result in confusing arrays of morphological features.
(20) Tryptic peptide comparisons of 125I-labeled virion proteins showed that five viruses are different from each other, although there was considerable overlap in the peptide maps of the three aquatic viruses, indicting a degree of relatedness.
Shellfish
Definition:
(n.) Any aquatic animal whose external covering consists of a shell, either testaceous, as in oysters, clams, and other mollusks, or crustaceous, as in lobsters and crabs.
Example Sentences:
(1) To simulate naturally polluted shellfish as closely as technically possible, shellfish were polluted with minimal amounts of virus.
(2) Schemes employing solid media, such as the roll tube and pour plate methods, underestimated faecal contamination in shellfish tissue compared with a liquid MPN multiple test-tube method using minerals-modified-glutamate broth (MMGB) as primary enrichment medium.
(3) They harvest shellfish standing in the water or meandering through mangrove forests on the shore.
(4) We were unable to establish a significant relationship between the presence of the bacterium and that of its specific bacteriophages in the shellfish.
(5) These effects were observed in 5 and 10% shellfish feeding.
(6) "Fisherwomen, who before in a week would get 20 to 30 kilos of shellfish, now take a whole week to get 2 or 3 kilos," says De Alcántara, sitting on a folding metal chair in a dusty meeting hall.
(7) Provocation tests by eating foods such as eggs, meats, and shellfish reproduced the above-mentioned bladder disorders.
(8) Evidence is presented which establishes that mackerel fed in captivity can, by relay from contaminated shellfish via sand eels, accumulate paralytic shellfish poisons (PSP) in the edible flesh at a level (250 micrograms saxitoxin equivalents per kg) similar to that in the contaminated shellfish.
(9) injections of dinophysistoxin-1 and pectenotoxin-1, causative agents of diarrhetic shellfish poisoning.
(10) The shellfish also contained decarbamoyl toxins (dc-GTX II and dc-GTX-III) at approximately 2% of the total profile.
(11) These studies suggest the possibility that patients sensitized by exposure to caddis fly antigens could develop allergic reactions during their first exposure to shellfish or to their first bee sting.
(12) When the two thirds of the subjects who had been exposed were classified according to the frequency with which they had recently consumed any type of raw shellfish, there was a clear dose-response relation.
(13) Another shellfish sterol, 24-methylene cholesterol, also stimulated ACAT in human macrophages, but most of the xanthomatosis-related sterols did not stimulate ACAT.
(14) A reversed-phase high-performance liquid chromatographic method was developed to detect oxytetracycline (OTC) in three species of marine shellfish (Crassostrea gigas, Ruditapes philippinarum and Scrobicularia plana).
(15) Thin-layer chromatography and high performance liquid chromatography results indicate that Aphanizomenon flos-aquae NH-5 may produce paralytic shellfish poisons, mainly neo-saxitoxin and saxitoxin.
(16) Ten paralytic shellfish toxins [saxitoxin, neosaxitoxin, B-1, B-2, gonyautoxin 1, 2, and 3 (i.e., GTX-1, GTX-2, and GTX-3), C-1, C-2, and C-3] were oxidized at room temperature under mildly basic conditions with hydrogen peroxide or periodic acid.
(17) wt of 23,000 was identified in foot homogenate derived from paralytic shellfish poisoning (PSP) contaminated butter clams and was found to cross-react with crab-saxitoxin-induced protein (SIP) antiserum.
(18) A study was carried out to further evaluate the practicability of viral depuration by assaying individual shellfish.
(19) Other matters for investigation are: methods for quantitatively detecting viruses adsorbed on solids, the virus-removal capability of soils, better virus indicators, virus concentration in shellfish, the frequency of infection in man brought about by swallowing small numbers of viruses in water, the epidemiology of virus infection in man by the water route, the effect of viruses of nonhuman origin on man, and the occurrence of tumour-inducing agents in water.
(20) The control measures consisted of the prohibition of the harvest and sale of all bivalve mollusks as well as a public warning to avoid the consumption of such shellfish.