Quote:
Originally Posted by BottomFeederKC
…………...
Animals that evolve on this modest planet of ours tend to be the animals that refrain from peeing in their own water supply, so to speak (fish excluded, of course)…..
|
For what it is worth, maybe nothing: fish kidneys function much differently than mammals. Fish need to excrete vast amounts of water to maintain more salts in their blood. In addition, fish do not really make the changes in nitrogen that other animals do. Mammals convert the byproducts into ammonia and nitrate/nitrites (Thus, we developed gunpowder by collecting urine), fish do not. I had a professor at XXXXX (took it out, you don't need to know the university) correct a speech I made (privately) on this fact that I forgot about, or never picked up on, from comparative anatomy.
I thanked him, and got to have dinner discussing the chemistry of the kidney with one of the finest minds in the country.
JR