Results 311 to 320 of about 315,032 (356)
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The transport of freshwater fish
Journal of Fish Biology, 1975A method is described for the transport of fish resulting in very few or no mortalities during or after this procedure. Commercial salt is added to the water to give a final conentration of 0–5 %, compressed air is bubbled through the water and the fish are kept in ‘salt water’ after transportation to decrease the incidence of skin infections.
Hattingh, J +2 more
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Conservation of Freshwater Fishes
2015Freshwater fish are one of the most diverse groups of vertebrates, but are also amongst the most threatened. With contributions from leaders in the field, this is the first assessment of the global state of freshwater fish diversity, synthesising the opportunities, challenges and barriers facing the conservation of freshwater fish biodiversity.
Gerard P. Closs +2 more
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The Distribution of Freshwater Fishes [PDF]
Nature, 1926 As a mere sciolist in geology it sometimes occurs to me to wonder whether enough attention has been given to the distribution of freshwater fauna, in estimating the origin of British land contours and the course of rivers. It is generally accepted that until the North Sea was formed by an extensive subsidence of land in an age not geologically remote ...
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Chemistry and Ecology, 1987
Abstract Nitrite occurs naturally in fresh waters as a result of nitrification of ammonia and denitrification of nitrate, and its concentration can be enhanced by partial oxidation of ammoniacal discharges. Nitrite is toxic to vertebrates including fish and a principal effect is the conversion of haemoglobin to methaemoglobin which is incapable of ...
F. B. Eddy, E. M. Williams
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Abstract Nitrite occurs naturally in fresh waters as a result of nitrification of ammonia and denitrification of nitrate, and its concentration can be enhanced by partial oxidation of ammoniacal discharges. Nitrite is toxic to vertebrates including fish and a principal effect is the conversion of haemoglobin to methaemoglobin which is incapable of ...
F. B. Eddy, E. M. Williams
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1973
Publisher Summary This chapter describes the methods for freshwater fishes' tissue culture. The inorganic constituents of sera from mammals, teleosts, and even from cyclostome fishes in freshwater environments are qualitatively and quantitatively similar.
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Publisher Summary This chapter describes the methods for freshwater fishes' tissue culture. The inorganic constituents of sera from mammals, teleosts, and even from cyclostome fishes in freshwater environments are qualitatively and quantitatively similar.
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Science, 2009
Insights into how small, isolated fish populations persist in the wild could aid conservation efforts.
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Insights into how small, isolated fish populations persist in the wild could aid conservation efforts.
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Freshwater fishes of northern Australia
Zootaxa, 2017Northern Australia is biologically diverse and of national and global conservation signicance. Its ancient landscape contains the world’s largest area of savannah ecosystem in good ecological condition and its rivers are largely free-flowing. Agriculture, previously confined largely to open range-land grazing, is set to expand in extent and to focus ...
Pusey, Bradley J. +6 more
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1974
As stressed in chapter III, Tasmania possesses both an abundance of fresh water and a diversity of freshwater environments. Nevertheless, the native freshwater fish fauna is relatively small and it is also unbalanced in composition. There are about twenty-three species of native fish which are commonly found in fresh water or are dependent on it for ...
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As stressed in chapter III, Tasmania possesses both an abundance of fresh water and a diversity of freshwater environments. Nevertheless, the native freshwater fish fauna is relatively small and it is also unbalanced in composition. There are about twenty-three species of native fish which are commonly found in fresh water or are dependent on it for ...
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THE SCALES OF FRESHWATER FISHES
The Biological Bulletin, 1911Professor N. S. Shaler,1 writing of his experiences as a student under Agassiz, said: "I acquired a considerable knowledge of the literature of ichthyology, becoming especially interested in the sytem of classification, then most imperfect. I tried to follow Agassiz's scheme of division into the order of ctenoids and ganoids, with the result that I ...
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Parasites of Freshwater Fishes
The Journal of Parasitology, 1974Ross F. Nigrelli +2 more
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