Salmon Life Cycle Stage 1
The first stage in the salmon life cycle.
egg
This stage begins after the egg has hatched.
Alevin
As the Alevin grow stronger and loose their Yolk Sac, what stage do they enter now?
fry
What is the next stage after fry?
Smolt
What is the stage after smolt called?
Adult salmon
What is the nest called that the female creates for the eggs?
redd
What is special to an Alevin that is has on its body?
Yolk Sac
What are the markings on fry called?
Par marks
Where do fry swim to to become smolts?
an estuary
smaller fish
What colour are salmon eggs?
What does the yolk sac do for the Alevin?
Provides food and nutrients
Where do fry start to travel?
down the river towards the estuary
what happens to smolts while they are at the estuary?
What is the stage after adult salmon called
Spawner
Where do salmon eggs need to be laid... fresh water or salt water?
fresh water
What happens to the yolk sac as the nutrients are abosorbed?
Disappears
What do fry eat?
tiny insects
What is the process called when smolts body changes and adapts to being able to survive in saltwater?
smoltification
What colour do spawning salmon become?
Are males or females bright?
What body feature to male spawning salmon develop?
Red
males
strongly hooked snout
What are 4 things that salmon eggs need to survive?
Cold water, fresh water, oxygen & a redd for protection
Where do Alevin stay?
near the redd
What do parr marks do for fry?
camouflage from predators
What body marks do smolts loose?
They loose their parr marks
Where do Spawning salmon return to?
How do they remember how to get there?
To where they were born in the fresh water rivers
They follow the smells the have in their memory