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Match up worksheet
- 1. Match Up Name ___________________Date ____________________ Draw a line to match the label with the correct description Adult In late winter and spring, salmon eggs hatch and become ?????? . This is a fragile creature with huge eyes and a large yolk sac protruding from its belly. The vitelline vein, running through the center of the sac, extracts oxygen from the water. The at this stage remains under gravel, protected from predators and other hazards. A good flow of pure water is critical to alevin survival. Fry The female digs a nest to lay her eggs in. The male fertilizes them by covering them with a milky substance known as milt. The female then covers the eggs with gravel to complete the spawning process. The salmon’s life is finished and within a short time it dies and the body drifts downstream, providing nutrients to the stream system as it decays Egg The first stage of the life cycle. A female Salmon deposits as many as 10,000, about one-fourth inch in diameter. They are laid in the gravel of a stream. After about a month, eyes become visible. Smolt Ocean ????? salmon spend varied amounts of time in the sea, ranging up to five years. They eat as much as possible and grow rapidly in the Ocean feeding grounds Alevin The fry loose their stripes and turn a Silvery colour. At the ????? stage, they head downstream. Four to six inches long, They swim seaward in late May during the spring rains, and enter salt water, where they grow to adulthood. Spawning Adult Alevins absorb their yolk sacs and emerge from the gravel as fry in late spring and summer. About an inch long, they are easy prey for larger fish. At this stage they feed on plankton and small insects. Important survival requirements include good streamside cover and an ample food supply.
- 2. Match Up Name ___________________Date ____________________ Draw a line to match the label with the correct picture. Egg Alevin Fry Smolt Adult Spawning Adult