GEOS 212 1st Edition Lecture 24Outline of last lectureLECTURE 23 OUTLINE (Fish, Fisheries and The Open Ocean – 21 April 2015)Fish:- Life cycle (eggs, larvae, juvenile, adult)- Predator and/or Prey- HabitatsFisheries:- History- Locations- Management- International PolicyCharacteristics of open ocean community- Mostly low productivity (= downwelling!)- Life in local areas of upwelling- Need mobility to find and catch prey- Need mobility to escape predatorsVideo on open ocean community & baleenwhale feeding (Open Ocean 4:40-9:55)(0:00-5:08)- Feeding strategy of marlin & tunaThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Strategy of sardines to escape predators- Sei Whale feeding strategy- Pattern of feeding over timeOutline of Current Lecture:LECTURE 24 OUTLINE (Whales and Dolphins – 23 April 2015)Types of whales (baleen versus toothed)Commercial whaling through timePresent status of whalingOrca and DolphinsEcholocation- Top predators- Special adaptations (intelligence, communication skills, strategies)Video on baleen whales & whaling(Life in the Sea 20:00-31:35) (5:08 to 16:39)- 2 traits of mammals- Origin of whales – when and why?- 2 kinds of whales- 3 controls on where whales occur?- Prehistoric hunting of whales- Early commercial hunting- Modern commercial hunting- What happened in 1986?Video on Killer Whales- What are they hunting?- Size & structure of each pod- Use of sonar?- How communicate with each other?- Strategies developed to catch prey- How many fish consumed per day?Dolphin clips- How does echolocation work- Dolphin communication throughaggression- Swimming skillsCurrent
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