biology maintaing a balance

[stephaniebrais]

in hsc biology, what are behavioural adaptation of a marine fish in regulating salt concentration?

[Natasha.97]

in hsc biology, what are behavioural adaptation of a marine fish in regulating salt concentration?

Hi!
A marine (saltwater) fish is in a area of low H₂O concentration, whereas it contains a relatively high H₂O concentration. This results in diffusion of water out of tissues. The fish must conserve water, and to do this, it expels urine which is low in volume, and high in concentration. Here is a picture to demonstrate:



Hope this helps

[pikachu975]

Hi!
A marine (saltwater) fish is in a area of low H₂O concentration, whereas it contains a relatively high H₂O concentration. This results in diffusion of water out of tissues. The fish must conserve water, and to do this, it expels urine which is low in volume, and high in concentration. Here is a picture to demonstrate:

(Image removed from quote.)

Hope this helps

Would that count as behavioural? Thinking it might classify as physiological or something

I guess a behavioural adaptation could be moving to a different area not sure

[blasonduo]

Would that count as behavioural? Thinking it might classify as physiological or something

I guess a behavioural adaptation could be moving to a different area not sure

That's exactly what happens! There's not much more a fish can physically do

[LetsBeCats]

I don't believe we have to do much about the fish with behavioural as it's mainly their internal functions that do most the work

[Tino_BCP]

Would that count as behavioural? Thinking it might classify as physiological or something

I guess a behavioural adaptation could be moving to a different area not sure

For the excretion of low volumes of concentrated urea i would classify it as physiological as its something i doubt the fish can think about doing. However as it drinks large amounts of salt water to get water into its body this could be counted as behavioural however the excretion of the salt on the gills could be more of a physiological than structual adaptation.