PPT-Contaminant Levels in Alaskan Populations and Marine Mammals

Talking Points Which chemicals should we consider for RSC or at all See white paper distributed by Brock Which chemicals are relevant to Alaska Eg In the US all uses of toxaphene were banned in 1990. Marine Debris:. Ingestion By Birds. Plastics do not biodegrade or mineralize (go away), but they do photo-degrade when exposed to sunlight, breaking down into smaller and smaller pieces that can be consumed by birds and other animals. . Know the defining characteristics of mammals.. Classify different types of marine mammals. Relate physiological adaptation of marine mammals to their environment. Marine Mammals. vocabulary. Mammary glands. What is a Mammal?. Mammals have a 4 chambered heart.. Mammals are warm-blooded.. They have hair/fur.. Have mammary glands.. Give birth to live young.. Pinnepeds. Pinnepeds are. . marine mammals that have flippers and blubber, that need to breed on land. . Vertebrates. 350 m.y.a. vertebrates invaded land. Decendents of bony fish . Land vertebrates had to adapt to harsher conditions on shore. Tetrapods had to develop lungs that allowed for absorption of oxygen directly from air. . Chapter 4, Module 3. 1. Marine Mammal Protection Act of 1972. Learning Objective: The student will become familiar with marine mammals, USFWS and NOAA jurisdiction and compliance options for the Marine Mammal Protection Act.. Sharks originated 423 . mya. They comprise half of all . Chondricthyes. Over time, selection favored larger bodies and they fit the niche for the top marine predator. Found everywhere in the ocean but mostly on continental shelves. Defining Marine Debris. Human-made items that are discarded both intentionally and unintentionally and eventually enter ocean. Includes both biodegradable items (paper, wood, food, or metal) and non-biodegradable items (glass, plastic) . What does good note taking and rewriting look like?. Dugongs,. or sea cows as they are sometimes called, are marine mammals. . They can grow to about three metres in length and weigh as much as 400 kilograms. They are the only marine mammals in Australia that live mainly on plants. The name sea cow refers to the fact that they graze on the seagrasses, which form meadows in sheltered coastal waters.. Marine Vertebrates:. Mammals. Marine Mammals. Carnivora. Sea otters, polar bears. Pinnipeds. Seals, sea lions, walruses. Sirenians. Manatees, . dugongs (sea cows). Cetaceans. Porpoises, dolphins, whales. Jackie Rainer. The Issue. SONAR is dangerous to the health and well-being of marine mammals. The Navy should refrain from using it where mammals are known to congregate.. Marine Mammals. 128 species. Eduardo Infante, AOBAC, Chile. History of the Fishery. The Chilean toothfish fishery goes back to the late 80´s, but it was on the 90´s that a commercial fishery was developed. . The decrease on the quotas of Austral Hake make the longliner fleet to look for alternative species.. Gregg Thomas. Indiana University. SMBE 2014. Convergent evolution is observed at the phenotypic level. Porcupine. (. Rodentia. ). Echidna. (. Monotremata. ). Hedgehog. (. Erinaceomorpha. ). 2. Predictable Evolution. Vertebrates. Warm blooded. Breath through lungs. Live birth. Mammary glands. Intelligent (Large brains). Hair & Different shapes and sizes of teeth. Marine mammals.  are aquatic mammals that rely on the ocean and other marine ecosystems for their existence. They include animals such as . One type of animal that made a successful and complete transition from land to water in the course of its evolution is the whale. .. . The According to the fossil record, about 50 million years ago some terrestrial mammals began to make the transition from a life on land to a life in the sea. .