Hemoglobin changes with size in the Atlantic salmon (Salmo salar L.)
In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622, more
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| Abstract |
The hemoglobins of Salmo salar L. originating from different rivers and hatcheries in Sweden and Norway have been separated by means of electrophoresis on starch gel. The hemoglobin groups which migrate respectively to the anode (HbA) and the cathode (HbC) have been eluted as cyanohemoglobins and subjected to spectrographic analysis at 542 nm.The HbAHbC ratio has been measured in artificially land-locked specimens and in similar sized animals from the same stock coming back into fresh water after growing up in the sea. At the same size, this ratio is higher in artificially land-locked specimens. The difference is considered to be the consequence of a stress situation in the artificially land-locked animals. This may result from differences in activity of the thyroid.Differences in proportions of hemoglobin components have been observed in specimens from different stocks, at freshwater hatcheries, and under aquaculture conditions in the sea. |
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