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M Paradis

Publications and source records attributed to M Paradis.

46 records · Page 3Linked to original sources
PubMed1976

Localization of a marine source of odd chain-length fatty acids. I. The amphipod Pontoporeia femorata (Kröyer).

The amphipod Pontoporeia femorata (Kröyer) contains approximately equal amounts of odd chain length and even chain length fatty acids. Mature males of this species are released into the waters of Jeddore Harbour during winter months as the result of a regular reproductive cycle and become food for smelt Osmerus mordax moving into the harbor in preparation for spring spawning runs, thus accounting for the previously reported unusual fatty acid composition of these smelt. The exceptionally high levels of odd chain length fatty acids in P. femorata occur at all stages of maturity in both sexes of the animal and are found in P. femorata in other locations.

Animals↗
PubMed1976

Localization of a source of marine odd chain-length fatty acids. II. Seasonal propagation of odd chain-length monoethylenic fatty acids in a marine food chain.

The unusual occurrence of elevated levels of odd chain length fatty acids (OCFA) in smelt taken during winter months in Jeddore Harbour, Nova Scotia, is due to the dietary intake of large numbers of the amphipod Pontoporeia femorata (Kröyer). Sampling over two winters confirms that the seasonal peak period for this amphipod in stomachs is mid-December to the end of February. The distributions of monoethylenic isomers are compared to distinguish exogenous and endogenous smelt dietary features in terms of the geographically limited phenomenon of high OCFA levels and the essential absence of biological activity for these acids.

Animals↗
PubMed1975

Occurrence and chemical structure of nonmethylene-interrupted dienoic fatty acids in American oyster Crassostrea virginica.

The American oyster, Crassostrea virginica, was found to contain structurally homologous nonmethylene-interrupted dienoic (NMID) fatty acids. The major C20 and C22 nonmethylene-interrupted dienoic fatty acid isomers were shown to occur as two pairs of homologues 5,13-20:2 with 7,15-22:2 and 5,11-20:2 with 7,13-22:2. A combination of analytical procedures was required for conclusive structure determination.

Animals↗
PubMedDate not supplied

Generalizable outcomes of bilingual aphasia research.

A number of constructs developed to account for bilingual aphasia phenomena have been advantageously extended to increase our understanding of language representation, processing, breakdown and rehabilitation in unilinguals as well. In particular, focus on the right-hemisphere-based pragmatic component of verbal communicative competence, the activation threshold, the control of resources, the role of emotion in second language acquisition and that of procedural vs. declarative memory, has led to the suggestion that unilinguals are in fact at one end of a continuum, with multilinguals who speak genetically unrelated languages at the other end. No function is available to the bilingual speaker that is not already available to the unilingual, unidialectal speaker. The only difference seems to be the degree of use the speaker makes of each of the relevant cerebral systems.

Aphasia↗
PubMedDate not supplied

Serum free thyroxine concentrations measured by chemiluminescence in hyperthyroid and euthyroid cats.

Serum free thyroxine (FT4) concentrations using chemiluminescence were measured in hyperthyroid cats (n = 72) and clinically normal cats (n = 129) to establish reference values and to determine if this method could be a useful alternative to total T4 (TT4) measurement by radioimmunoassay (RIA). Mean serum FT4 concentration (68.3 +/- 26.8 pmol/L) of hyperthyroid cats was significantly higher than that of euthyroid cats (22.9 +/- 4.8 pmol/L). Reference values for basal FT4 of hyperthyroid and healthy cats were 33 to 114 pmol/L and 16 to 30 pmol/L, respectively. The results of the present study suggest that FT4 measured by chemiluminescence could be a useful alternative to TT4 measured by RIA when evaluating thyroid function in cats, since the hazardous effects of radioactive materials on the manipulators and the environment could be avoided. Further studies are required to corroborate these preliminary findings.

Animals↗