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The Oxygen Consumption of Ephemerid Nymphs from Flowing and from Still Waters in Relation to the Concentration of Oxygen in the Water
The data are best summarized by reference to Fig. 1. An extreme contrast is presented by Cloeon dipterum and Baetis sp. in the relation between oxygen consumption and oxygen concentration in theExpand
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The Effect of Certain Environmental Factors on the Growth of Brown Trout (Salmo Trutta L.)
1. The factors responsible for seasonal variations in the growth of brown trout in any one environment are examined. 2. The probable basic importance of the water temperature is established. AExpand
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A Portable Apparatus for the Determination of Oxygen Dissolved in a Small Volume of Water
A method for the estimation of the amount of oxygen dissolved in water is described. The method requires only 1-2 c.c. of water and is accurate to 2%, even at low oxygen concentrations. The apparatusExpand
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The Function of the Gills of Mayfly Nymphs from Different Habitats
1. The oxygen consumption of normal and gill-less nymphs of the mayflies Baetis sp., Cloeon dipterum and Ephemera vulgata has been measured at various oxygen concentrations. 2. It has been foundExpand
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Function of the Gills of the Mayfly Nymph, Cloeon dipterum
IT is generally supposed that the plate-like abdominal gills occurring in some ephemerid nymphs are respiratory organs, although little experimental evidence is available to support this view.Expand
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Rate of Tissue Metabolism of Marine Cold-blooded Animals in Different Latitudes
IN previous communications to NATUBE1 the activities and metabolism of arctic and English marine invertebrates were compared. It was shown that English species consume more oxygen, at theExpand
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Oxygen Consumption of Mayfly Nymphs in Relation to Available Oxygen
LITTLE is known of the reasons why freshwater animals are confined to certain habitats, or of the effects of their particular environments on the metabolism of the animals. The first steps in a studyExpand
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