salmon life cycle ielts
We can see that the life cycle of salmon is consist of 8 stagesamong which salmon migrant place to place for growthFrom very beginningthe adult lying eggs in the riverthen the eggs would develop into emergence form and then travel to freshwater area to growthWhen their figure get more biggerthey will migrant to estuary area continuing growth. Egg fry smolt and adult.
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After emerging from eggs the infant salmon spend their next stage in freshwater and this phase is called emergence.
. Firstly adult salmon return to the upper river to lay an egg under the small stones and reeds approximate 5 or 6 month for the little fish appear begin the cycle life as they parent use to have. Meanwhile freshwater rearing happens and then these all migrate to the ocean. These are the salmon spawning grounds where salmon eggs are deposited for safety in the gravel.
The diagram illustrates how the salmons life cycle takes place. Sac fry or alevin The life cycle of salmon begins and usually ends in the backwaters of streams and rivers. Here are the life of salmon fish all 3 step start to the upper river and at the open sea.
Besides before moving on to the ocean there is a common area named an estuary where estuary rearing occurs. The journey of formation of an adult Salmon begins from the egg which keeps changing itself over the period. Eggs embryos fry smolt and the adult fish.
Thus the life cycle of a salmon fish springs from the incubation stage in a river. For approximately 5 years into an adult salmon which they could grow around 70-76 cm long. Overall there are 3 distinct stages in the life cycle of a salmon starting with the egg stage and ending with the adult stage.
The smolt spend around 5 years on habitting in open sea area. The egg stage the fry stage the smolt stage and the adult stage The life cycle begins when salmon eggs are laid among small. We can also see that salmon spend time in three distinct locations during the cycle moving from river to estuary to ocean and then back upstream.
Please do not put the essay instructions in the Subject. Commencing with the initial phase of salmon fish is incubation and emerged in the river. Hints Tips And Advice.
The salmon spawning grounds are also the salmon nurseries providing a more protected environment than the ocean usually offers. Fry grows there for approximately 4 years and becomes smolt. You can understand it this way.
Vocabulary Words For Task 1. Salmon begin their lives in rivers where the adult fish lay and incubate their eggs. After emerging from eggs the salmon fry spend some time growing in freshwater and this stage is called freshwater wearing.
After fully growing up adult salmon goes back to upper river to lay eggs and thus cycle repeats itself. Salmon begin their lives in rivers where the adult fish lay and incubate their eggs. Adult salmon fishes lay eggs in rivers and incubate their eggs there.
The flowchart illustrates the different stages involved in the life cycle of a salmon. Detail 1 To begin with the adult salmon lay eggs upriver where the current is slow. Finally the adult salmon will find a mate and lay salmon eggs by the upper river.
Overall the salmons life cycle has 3 phases. As the diagram shows the first stage in the salmons life cycle begins with the hatching of eggs. Next smolt swims into open ocean where it lives for 5 years and finally becomes adult salmon.
The time gap between the laying of the egg to the formation of the spawning adults is approximately 8. At the beginning of the life cycle eggs are laid and incubated in rivers. Overall it goes through four different stages of development.
Then at some point in their development the fish swim downstream to river estuaries where rearing continues. Band 85 IELTS report sample. Then they stay in freshwater to grow further.
They usually live in that fast flowing area in a period of approximately 4 years. The life cycle continues with one more change in their living location when the fry grow up into smolt which reach the medium size of 12-15 cm. Fry lives between 5 to 6 months in this location.
By these diagrams we could conclude how salmon life cycle happen and we could keep on. While the first three stages occur in freshwater the last one takes place in saline water. The red part is correct.
After that fish goes to lower river which has a lot faster stream speed. Then salmon migrates to a second type of water called estuary where seawater and freshwater meet for another stage of rearing. The life cycle of the Salmon starts when the spawning adult fish lays eggs and dies.
Eggs stay incubated in the stony riverbed enjoying protection from. After initially hatching in a slow moving river each Salmon spends roughly equal amounts of its 10 year cycle in fast flowing freshwater and open seas. Thereafter it moves to rear areas.
Overall salmon have an average lifespan of 9 years and their life cycle consists of four main stages. After emerging from eggs the young salmon spend the next stage of their lives being reared in freshwater areas. After emerging from eggs the young salmon spend the next stage of their lives being reared in freshwater areas.
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