Spawning behavior - PowerPoint PPT Presentation

Fish Reproduction

Fish Reproduction. Spawning?. Egg Maturation Ovulation Spawning. Spawning?. Temperature. Photoperiod. Temperature. Pineal Gland. Photoperiod. Opening for pineal gland. Melatonin:. Regulates 24 hr cycle. Also changes skin pigmentation!. Weather. Substrate. Mate Availability &amp;

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Testing the Effects of Elevated Flows on the Spawning

Testing the Effects of Elevated Flows on the Spawning Behavior of Chum Salmon in the Columbia River. Kenneth F. Tiffan U.S. Geological Survey Western Fisheries Research Center Cook, Washington. Background. From November 1 through December 15, 2003, tailwater elevations exceeded

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211 views • 10 slides

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