Marine Mammals Not Including Whales.

Slides:



Advertisements
Similar presentations
Mammals Section 1: The Mammalian Body Section 2: Today’s Mammals
Advertisements

Class: Mammalia.
Marine Mammals Approximately 200 million years ago, another group of air-breathing vertebrates, the mammals, evolved from now-extinct reptiles Phylum Chordata.
Lesson 21: MARINE MAMMALS. Common characteristics  Marine mammals share the following characteristics:  Give birth to live young  Nurse their young.
Seabirds. A.Diversity: 2.Diet Small zooplankton – Prions Fishes – Penguins Squids – Petrels Benthic invertebrates – Razorbill Other birds – Petrels Resource.
Marine Mammals, Birds and Reptiles To the Land and Back  350 MYA - Tetrapods evolve from fish  Need:  Lungs  Forelimbs  Ability to avoid drying.
Vocabulary Review Ch 43 - Mammals. In animals, the characteristic of maintaining a high, constant body temperature through regulation of metabolism and.
Objectives: 1.Know the defining characteristics of mammals. 2.Classify different types of marine mammals 3.Relate physiological adaptation of marine mammals.
Lesson 21: Marine Mammals.
 The three groups of living mammals are the:  -Monotremes (MAHN-oh-treemz)  - Marsupials (mahr-SOO-pee-ulz)  - Placentals  These groups differ.
Mammals.
Unit #8 Exam Review Quiz Grade: «grade» Subject: «subject» Date: «date»
Unit #8, Quiz #1, Grade: «grade» Subject: «subject» Date: «date»
The Marine Biome Marine Vertebrates: Pinnipeds and Carnivora.
Bird An endothermic vertebrate that has feathers, a four chambered heart and lays eggs Contour Feather A large feather that helps give shape to a bird’s.
By: Rachel, Nico, Brandon, Lauren. Mammalia Evolved from reptiles during the Mesozoic era This is around the time when dinosaurs evolved from different.
Mammals live in many Environments MAMMALS ARE A DIVERSE GROUP MAMMALS ARE ENDOTHERMS MAMMALS HAVE ADAPTED TO MANY ENVIRONMENTS MAMMALS HAVE REPRODUCTIVE.
Classification and Characteristics Order Carnivora
Riley, Megan, Jacob, Casey. POLAR BEARS  Top predator in the marine food chain  Adult males may reach 3 meters in length  A four-inch layer of fat.
Class Aves the Birds. General Characteristics All members are homeotherms All members are homeotherms They can maintain a constant body temperature They.
A. Origin of Mammals The first mammals appeared about 230 million years ago, during the Triassic period.
Mammals Rule! Mammal Notes Marine Mammals: - 65 million years ago dinosaurs disappeared and mammals thrived.
Unit #9 Quiz # Grade: «grade» Subject: Aquatic Science Date: «date»
KEY CHARACTERISTICS OF MAMMALS Zoology. CLASS MAMMALIA 4,400 species Mammals Classified into more than 20 orders, one of which includes humans. Live on.
Name 3 of the 5 characteristics of mammals: * 4 chambered heart * Warm-blooded (endothermic) * Have hair/fur * Have mammary glands * Give birth to live.
Characteristics of Mammals Mammals are endothermic vertebrates that have hair and produce milk to feed their young. Mammals can be found almost everywhere.
© 2006 Thomson-Brooks Cole Chapter 12 Marine Mammals.
Class Mammalia order Pinnipedia (Seals, Sea Lions & Walruses)
Marine Mammals Kingdom: Animalia Phylum: Chordata Class: Mammalia Order Pinnipedia Family Phocidea Family Otariidae Family Odobenidae Order Carnivora Order.
Warm Blooded Vertebrates Phylum Chordata Class Mammalia
Chapter 43 Mammals Section 1 Origin and Evolution of Mammals.
Pinnipedia “Feather footed”. Characteristics Diet: fish and squid Diet: fish and squid Streamlined bodies; front & rear flippers Streamlined bodies; front.
Marine Mammal Notes. Mammal Characteristics  Endotherms – warm blooded. Body temperature regulated internally.  Hair – to retain body heat  Viviparous.
Mammals Chapter 45. Extinct species.
Marine Mammals By: Lauren Howard & Lauren Ralston.
Section 2 Characteristics of Mammals
Kingdom: Animalia Phylum: Chordata
CHAPTER 18 KEY TERMS EndothermicDown Feather Contour FeatherPlacental Mammal PlacentaUmbilical Cord MonotremeMarsupial BirdsQuill AlbumenIncisors CaninesMolars.
Marine Mammals Oceanography.  Marine mammals are some of the world’s most spectacular animals  They include the largest animals that have ever lived.
CLASS MAMMALIA Domain: Eukarya Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata.
Order Pinnipedia Seals and sea lions.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu MAMMALS.
Mammals Kingdom Animalia
DIVERSITY OF LIVING THINGS (VERTEBRATE ANIMALS) G9 Alpha and Delta – 2011 Mr. ARNOLD, Rafael.
PHYLUM CORDATA: THE VERTEBRATES
Phylum Chordata; Class Mammalia; Order Carnivora;
Marine Mammals Class Mammalia (Includes humans!)
Mammals By: Paulo Barrios, Jasmine Gillis, Christine Ngo, Noor Toma
Class Mammalia.
Mammals.
What every human should know!
Chapter 26 Reptiles and Birds.
Mammals.
PINNIPEDS.
Class Aves and Mammalia Notes
Marine Mammals Class Mammalia.
Mammals live in many Environments
Class Mammalia All mammals share the following characteristics:
MAMMALS MAMMAL’S CHARACTERISTICS Warm blooded Hair/fur
Mammals Endothermic vertebrates that have hair and produce milk to feed their young.
Class Mammalia.
PINNIPEDS.
Mammals
Mammal Characteristics
Specialized Teeth, Endothermy, & Hair
Characteristics of Marine Mammals
Mammals Class Mammalia.
Marine Mammals An Introduction.
Mammals Kingdom Animalia ---Phylum Chordata Subphylum Vertebrata Class Mammalia.
Mammalian Adaptations
Presentation transcript:

Marine Mammals Not Including Whales

I. What is a mammal? A. Characteristics 1. Pelage - hair or fur made of protein called keratin covering all or part of the body for insulation & camouflage. 2. Mammary glands in females are modified sweat glands that make milk containing sugars, proteins, & fats to nourish young. 3. Single lower jawbone.

B. Ancient Mammals 1. Fossil records show mammals arose from group of reptiles called cyanodonts at the end of the Paleozoic era. 2. Early mammals were small, shrew like, insect eaters that had large eye sockets making them probably nocturnal.

C. System Upgrades Circulatory a. Endothermy – hair helps insulate against heat loss. b. Four-Chambered Heart – keeps oxygenated blood away from O2 poor blood. 2. Digestive a. Ungulates (hoofed mammals) have four-chambered stomachs with bacteria living inside to help them digest cellulose from plants. b. Specialized mouth structures (teeth, baleen, etc.) help start the process of digestion.

3. Nervous a. Large cerebrum allows for higher-order thinking. b 3. Nervous a. Large cerebrum allows for higher-order thinking. b. Bats and some whales can echolocate.

3. Reproductive a. Monotremes 1) Females lay 1-2 leathery-shelled eggs containing yolk and incubates them with her body heat. 2) Young monotremes are small and partially developed at hatching so depend on mother for protection and milk from sweat glands on skin.

b. Marsupials 1) Have short development period inside of the mother b. Marsupials 1) Have short development period inside of the mother. 2) Newborns must crawl to the mother's pouch or marsupium after birth, attach to a nipple for milk, and finish developing.

c. Placentals 1) Gestation (period of development inside mother) is longer in placental mammals. 2) Nutrients, wastes, gases exchanged through membrane lining uterus called the placenta.

II. Marine Mammals A. Sea Otters (Family: Fissipedia) 1. Location: Kelp beds and coastal reefs along Pacific coast of N. America. Once found throughout Pacific but hunted to near extinction (100 in 1911 to 130,000 today). 2. Thick fur rather than fat, playful, vocal, consume 25% of body weight / day. 3. Leave water if threatened by predators or weather.

B. Polar Bears (F: Fissipedia) 1. Found only in Arctic (N. Hemisphere). 2. Considered a marine species because they feed on marine organisms. 3. Largest bear, swims and walks great distances for food. 4. Habitat is threatened by humans and global warming – may be extinct within 50 years.

C. Sirens: Manatees and Dugongs (F: Sirenia) 1. Once widespread, now only found on coastal areas. 2. Vegetarians – sea grasses and shallow water plants. 3. Dugongs: marine; Manatees: marine and fresh 4. Stellar Sea Cow: extinct Arctic species

D. Pinnipeds (F: Pinnipedia) 1. General C’ristics Retain 4 modified limbs, fast swimmers, expert divers. Come ashore to mate, molt, give birth, some to sleep. Found in colder waters, most species not endangered.

2. Eared Seals a. Visible ears, long necks, can rotate flippers. b. Sea lions: Highly social, vocal, playful - California Sea Lion c. Fur Seals: Thick woolly undercoats, 1 species in N. Hemisphere & 8 in Southern

3. Phocids – True Seals a. Not able to easily move on land – roll or slide, short necks, no external ears. b. Most species marine but a few live in rivers and estuaries. c. Harbor, harp, leopard, elephant.

4. Walruses a. Live only in the Arctic, feed on bivalve mollusks, echinoderms and crustaceans, fish. b. Once hunted to endangerment for large ivory tusks. See the best exercise video ever…