BIOL 321 Lecture Notes - Lecture 27: Reynolds Number, Copepod, Telson

• School: University of Victoria
• Department: Biology
• Course: BIOL 321
• Professor: Page Louise

Document Summary

Extremely abundant: insects of the sea, largest animal biomass on the planet. Diverse aquatic habitats: freshwater and marine. Have an abdomen and a head/thorax that is somewhat consolidated (fancier names but don"t need to know) Cephalothorax has appendages, but abdomen does not. Very elongated first pair of antennae (median ocellus retained from nauplius) Don"t have compound eyes, only a single median eye. Pair of mandibles and 1st pair maxillae. Nowhere to hide- no surfaces to match, and makes them very vulnerable to predators. Small reynolds number- because of their body size they live at a low reynolds numbers. Maintain position in water column by: swimming, use 1st antennae as parachutes (reduce rate of sinking, lipid nutrient reserves buoyancy. Feeding: reynolds number describes the importance of viscous forces vs. inertial forces for characterizing behavior of fluids flowing past an object. (cid:1857)(cid:1866)(cid:1867)(cid:1864)(cid:1856)(cid:1871) (cid:1865)(cid:1857)(cid:1870) (cid:4666)(cid:1857)(cid:4667)=(cid:3032)(cid:3042)(cid:3030)(cid:3047)(cid:3052) (cid:3051) (cid:3046)(cid:3053)(cid:3032) (cid:3051) (cid:3031)(cid:3032)(cid:3041)(cid:3046)(cid:3047)(cid:3052) (cid:3046)(cid:3030)(cid:3042)(cid:3046)(cid:3047)(cid:3052) The two important parameters are velocity and size.