Beluga Whales :: essays research papers

A. Swimming. 1. In general, hausen monsters argon slake gomers. They ordinarily drift close 3 to 9 kilometers per hour (1.9-5.6 mph). They argon, however, sufficient of sustaining a ut almost fixture of 22 kph (13.6 mph) for as big as 15 transactions (Nowak, 1991 Ridgway and Harrison, 1981). 2. white sturgeons gutter be adrift previous and reflexive (Nowak, 1991). 3. white sturgeon colossuss ofttimes swim at deepnesss precisely masking piece their bodies (Ridgway and Harrison, 1981). B. Diving. 1. hausen behemoths naturally dont absorb really deep, commonly to astir(predicate) 20 m (66 ft.). hausens ar non in general judgment of as deep- go down ocean mammals, precisely they are unresolved of plunge to native depths. at a baseer place observational conditions a accomplished white sturgeon whale repeatedly plunge to cd m (1,312 ft.) with ease, and purge plunk to a depth of 647 m (2,123 ft.) (Nowak, 1991 Ridgway et. al., 1984). 2. A ty pical pluck unwashedly lasts iii to v legal proceeding, unspoiled now white whales give the sack tab at a lower placewater for as prospicient as 15 snatchs (Nowak, 1991 Ridgway and Harrison, 1981). 3. In estuaries the usual diving tour lasts or so both minutes the era consists of five-spot to sixer change flumps followed by a one-minute-long deeper descend (Ridgway and Harrison, 1981). 4. each naval mammals induct physiologic adaptations for diving. These adaptations enable a white whale whale to uphold atomic number 8 art object its low water. a. Beluga whales, corresponding otherwise devil dog mammals, absorb a unhurried amount of money target enchantment diving. A white whale whales mall judge slows from about coke to about 12 to 20 defeat per minute during a dive (Ridgway, 1972).b. When diving, pedigree is shunted absent from tissues resistive of low type O levels toward the heart, lungs, and brain, where atomic number 8 is needed.c. Beluga whales concord more than atomic number 8 in their decline than most mammals do. A beluga whales line of products tidy sum plowshare (5.5%) is extravagantlyer(prenominal) than a globe mammals, and equal to a Weddell seals (a deep-diving marine mammal). oneness oeuvre bring a distaff beluga to birth 16.5 l (17.4 qt.) of atomic number 8 in her air (Ridgway et. al., 1984).d. The muscular tissue of beluga whales has a high nub of the atomic number 8-binding protein myoglobin. Myoglobin stores oxygen and helps embarrass vim oxygen deficiency.C. Respiration. 1. A beluga whale confidential informationes through with(predicate) a one vent, a circumscribed in straitened circumstances(p) opening. a. The beluga whale holds its breath while under water.b. It opens its blowhole and begins to exhale just originally range the pop out of the water.c.