Biology 3660A/B Lecture 7: 3601 Lec 7 Desert animals.docx
20 Jun 2015
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Pink colors from copepod pigments: not really under stress find fresh water after salty water, had a behavior to compensate for water stress, tortoise stay in burrows for low heat, the african migration large scale migration following the rain, oryx choose the time of day that they eat eat before dawn, dry grass absorbs moisture from the air in that time, more water in food available. Lose water more slowly biggest strategy: wildebeest only go into rainy season, not as efficient kidneys as oryx, oryx feeding at specific times a day, go years without drinking water, much lower rate of wl from urine and feces than wildebeest, generally a light decrease of urine osmotic pressure with increasing body mass, all desert animals have a much higher urine osmotic pressure than regular animals very high efficiency kidneys, fresh water animals, have very poor osmotic pressure.
