BIOL-4777EL Lecture Notes - Lecture 6: Australian Brushturkey, Brown Adipose Tissue, Urination
15 Feb 2018
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Fat energy resources: hibernating - brown fat, 2. 50x more energy. Subcutaneous fat - white fat: 2. 27x more energy than sugar. Australian brush turkey: builds nest (leaves) and lays eggs underneath, has to keep internal temp of 91. 4of, uses tongues as thermometer. Subniveal environment (under the snow: snow acts as insulation below 2 feet for the ground, small mammals (mice) Birds: insectivorous - migrate, seed eaters - some migrate (1000 km) Arctic term: greatest migraters in the world. Fly ways: paci c, central, atlantic migrate south, heat problems, sweating, urination (birds, panting (birds and dogs, shivering. 3rd segment of thorax: allows perception of direction of sound. Acoustic ranges - ultrasonic (above human range), infrasonic (below human range: grasshoppers: 800 - 1000 cycles/second, crickets: 300 - 8000 cycles/second, moths: 240000 cycles/second. Sensory hairs - different lengths: water - dense median, sound travels farther compared to air.
