Salmon hatch in freshwater, and after a period of time as small parr, they remodel their physiology in preparation for the transition to seawater (smoltification). The smolts then migrate to seawater. Thyroid hormone promotes the synthesis of Na K ATPase- the sodium pump- which has an important role in excretion of excess Na from the body. True or false: You would expect thyroid hormone to be higher in parr than smolts. True
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During this transition, they undergo smoltification where their physiology is remodeled. Show more…
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