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1 Name_________________________
Salmon Life Cycle and Migration Envs 102 50 points
Overview:
Pacific salmon species spend their lives in both freshwater and saltwater. In this activity,
you will describe and illustrate a sample life cycle for Pacific salmon, including where
they spend di!erent phases of their lives, the salmon migration route, hazards they
encounter along the way, and the fact that salmon are able to return to the streams
where they were born after spending years swimming in the ocean. You will:
describe the di!erent stages of salmon life cycle;
detail the various hazards salmon encounter during their migration;
visualize an example salmon migration route using a Google Earth tour
Materials Required:
• Computer with Internet access, Microsoft Word and Google Earth
References and Resources:
Part 1: Fish Life Cycle
http://www.nps.gov/olym/naturescience/the-salmon-life-cycle.htm
http://www.nmfs.noaa.gov/pr/species/fish/chinooksalmon.htm
http://www.fws.gov/alaska/cybersalmon/coho.htm
http://library.thinkquest.org/05aug/00548/species--life%20cycle.html
Part 2: Tagging
PIT Tag Information Center :
Start by doing the QUICK REPOTRS TUTORIAL: http://www.ptagis.org/support/tutorials
Use Quick Reports to answer the questions for this section.
http://www.ptagis.org
Part 3: Distribution and Migration Maps:
Fish Passage: http://www.fao.org/docrep/004/y2785e/y2785e03.htm
http://www.salmonnation.com/fish/meet_species.html#
http://www.nmfs.noaa.gov/pr/pdfs/rangemaps/chinooksalmon.pdf
http://alaska.fws.gov/cybersalmon/Ocean%20maps.pdf
Part One: Salmon Life Cycle
Use the required reading to answer the following questions. No credit will be given for
answers that are “cut and paste” from the website text. Use your own words.
1. In the “Fish Life Cycle” section, use the listed websites to answer the questions below.
a. Salmon and steelhead are described as anadromous fish. What does this mean?
Anadromous (sh is a kind of (sh who born in the river and living in the
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2 Name_________________________
sea for a long time and spawing in the river again.
b. What life stages are considered “Juvenile Fish?”
After the (sh in the alevins stages and before reture to the sea.
c. How long do juvenile fish stay in fresh water? At what stage do they begin to
migrate to the ocean?
It depends on different kind of anadromous (sh. Sockeye have been
spending 1-2 years. Chinook have been spending less than 5 month and
coho have been spending over 1 year. At this moment, they are called as
fry.
d. What direction are the juvenile fish heading when they reach the dams?
They have to Hide from predator and prevent themselves during 2ood.
e. How long do the salmon and steelhead spend in the ocean?
Salmon spend 1-7 years and the steelhead spend 1-4 years.
