Difference between revisions of "Anadromous"
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The [[salmon]] is a familiar example of an anadromous fish; everyone has seen dramatic images of salmon struggling as they swim upstream to [[spawn]]. Most salmon return to their "home stream," the stream where they were born, to spawn, even though may have traveled thousands of miles away from it as adults.<ref>"... salmon are able to return to the streams where they were born after spending years swimming in the ocean." [http://www.nationalgeographic.com/xpeditions/lessons/09/gk2/migrationsalmon.html National Geographic] </ref> In the 1960s and 70s scientists learned that salmon recognize their home stream by smell.{{fact-science}} | The [[salmon]] is a familiar example of an anadromous fish; everyone has seen dramatic images of salmon struggling as they swim upstream to [[spawn]]. Most salmon return to their "home stream," the stream where they were born, to spawn, even though may have traveled thousands of miles away from it as adults.<ref>"... salmon are able to return to the streams where they were born after spending years swimming in the ocean." [http://www.nationalgeographic.com/xpeditions/lessons/09/gk2/migrationsalmon.html National Geographic] </ref> In the 1960s and 70s scientists learned that salmon recognize their home stream by smell.{{fact-science}} | ||
| + | *... most scientists believe that salmon use special magnetic navigation to figure out which way to travel. When they get close to the mouth of the river that leads to the stream where they were born, they begin to smell the stream's special scents. They then "follow their noses" to their home stream. [http://www.nationalgeographic.com/xpeditions/lessons/09/gk2/migrationsalmon.html] | ||
==References== | ==References== | ||
Revision as of 03:36, May 8, 2007
An anadromous lifecycle is one in which creatures are hatched in fresh water, migrate to salt water as adults, and then to back to fresh water in order to reproduce.[1]
The salmon is a familiar example of an anadromous fish; everyone has seen dramatic images of salmon struggling as they swim upstream to spawn. Most salmon return to their "home stream," the stream where they were born, to spawn, even though may have traveled thousands of miles away from it as adults.[2] In the 1960s and 70s scientists learned that salmon recognize their home stream by smell.Template:Fact-science
- ... most scientists believe that salmon use special magnetic navigation to figure out which way to travel. When they get close to the mouth of the river that leads to the stream where they were born, they begin to smell the stream's special scents. They then "follow their noses" to their home stream. [1]
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998
- ↑ "... salmon are able to return to the streams where they were born after spending years swimming in the ocean." National Geographic