Marine Mammals
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Marine Mammals D. Diving • Adaptations for long and deep dives 1. High hematocrit 2. Muscles rich in myoglobin 3. Reduction of heart rate 4. Flexible rib cage 5. Majority of oxygen in blood and tissues
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Marine Mammals. Diving Adaptations for long and deep dives High hematocrit Muscles rich in myoglobin Reduction of heart rate Flexible rib cage Majority of oxygen in blood and tissues. Marine Mammals. Echolocation Common in dolphins, porpoises, toothed whales - PowerPoint PPT Presentation
Transcript of Marine Mammals
Marine MammalsD. Diving
• Adaptations for long and deep dives1. High hematocrit2. Muscles rich in myoglobin3. Reduction of heart rate4. Flexible rib cage5. Majority of oxygen in blood and tissues
Marine MammalsE. Echolocation
• Common in dolphins, porpoises, toothed whales • May occur in some baleen whales and pinnipeds
Dolphins Whales Whales
Marine MammalsF. Migration
• Baleen whales, pinnipeds• Toothed whales tend not to migrate
Marine MammalsF. Behavior
• Playful behavior• Breeching• Spy hopping
Ecology
EcologyA. Population Dynamics
• Under favorable conditions populations can grow rapidly
EcologyA. Population Dynamics
EcologyA. Population Dynamics
EcologyA. Population Dynamics
• Populations tend to be self-regulating• Populations grow until they reach carrying capacity
• Population growth and carrying capacity may be determined by limiting resource
• Limiting resources are different for different populations
EcologyB. Species Interactions
1. Intraspecific competition• Ex – Competition for algae by sea urchins• Ex – Competition for shells by hermit crabs
2. Interspecies competition
