Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450...

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Mammals Vertebrate Zoology

Transcript of Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450...

Page 1: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

MammalsVertebrate Zoology

Page 2: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

What does the typical mammal look like?

Small Brown Nocturnal ~4450 species

Page 3: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 4: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Characteristics Hair

Endothermic

4 chambered heart

Diaphragm (muscle to aid breathing)

Most nourished by a placenta

Mammary glands produce milk

Gestation - length of time within the uterus

Weaning - time at which young stop drinking milk

Page 5: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Characteristics Skin with sweat glands, oil glands, scent glands, & mammary

glands

3 middle ear ossicles (Bones); malleus, incus, & stapes derived from the jaw

Mouth with diphyodont teeth (deciduous replaced with permanent)

Lower jaw fused into one bone

Moveable eyelids

Fleshy pinnae

Non-nucleated, biconcave red blood corpuscles (RBC’S)

Page 6: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

HairMade of the protein keratin

Keratin also makes up:Nails ClawsHoovesHornsAntlersTusks Hair Follicle

Skin Mites

Page 7: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

How Deer Antlers Grow

Page 8: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Horns, Antlers, & TusksHorns –Found on antelope, giraffe, & rhino Do not branch Permanent structures

Antlers – Found on deer Branch Fall off Covered in velvet which sloughs off

Tusks -Found in ungulates w/o horns

Page 9: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 10: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 11: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 12: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Why did the Irish Elk go extinct?

Page 13: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Skin with glands

Page 14: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 15: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 16: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Hyena scent gland

Page 17: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Panda scent gland

Page 18: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Dik Dik Scent Gland

Page 19: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Llama Scent Glands

Page 20: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Lemur Scent Glands on Arms

Page 21: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Scent glands and spraying

Page 22: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 23: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 24: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 25: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Spraying patterns of two mice

Page 26: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Mammary glands

modified apocrine sweat glands

key mammalian feature

complex system of ducts

surface opening: nipple or teat

Page 27: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 28: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Table: Relationship between No. of teats and species-specific litter size 

Group No. of teats No. of young per litter

primitive opossums 19-25 12

kangaroos 4 1

Tenrec 10-12 12 (max. 32)

Mastomys (African rat) 12-20 8-19

wolves (dogs) 4-6 4-6

pigs 10-14 6-12

many artiodactyls 4 1

pangolins 2 1

bats 2 (4) 1 (4)

whales, horses, manatees

2 1

elephants 2 1

primates 2 1

Page 29: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

The Approximate Constituents of the Milk of Various Mammals in ml/mg per liter

Animal Water Fats Protein

s Sugar

s Ash

Human 870 40 15 70 ?

Horse 900 22 20 60 3.6

Cow 880 34 33 44 7

Goat 862 48 48 46 8.5

Pig 840 50 37 50 6.3

Dog 770 93 97 31 9.1

Reindeer 677 171 109 28 15

Harp Seal 437.9 428.2 119.8 ? 9.14

Blue Whale 471.7 381.3 127.9 ? 14.3

Page 30: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 31: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 32: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

4 Chambered Heart

   

                

                   

    Mouse

500 beats/min

 

  

              

  

                   

    Human70

beats/min

 

  

             

   

                   

    Elephant28

beats/min

Page 33: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Heart Rates in Various Mammals

Species Resting bpm Active bpm

Great Whale 7

Elephant 28

Lion 40

Human 70 120

Rabbit 200

Mouse 500-600

Shrew 800 1320

Page 34: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Diaphragm Muscle used to change air pressure inside the

body in order to move air Less pressure = air moves in More pressure = air moves out

Page 35: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 36: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 37: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

3 Middle Ear Ossicles

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Page 39: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
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Otic hair cells

Page 41: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Single fused mandible

Page 42: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Mandible Comparison

Page 43: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 44: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Beaver

Page 45: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Squirrel

Page 46: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Prairie Dog

Page 47: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Rabbit

Page 48: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Lion

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Sea Lion

Page 50: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Wolverine

Page 51: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Skunk

Page 52: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Shrew

Page 53: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Smilodon

Page 54: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Black Bear

Page 55: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Killer Whale

Page 56: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Elephant

Page 57: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Rhino

Page 58: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Hippopotamus

Page 59: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

White-tailed Deer

Page 60: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Cow

Page 61: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Pig

Page 62: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Horse

Page 63: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Giraffe

Page 64: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Gorilla

Page 65: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Orangutan

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Page 67: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 68: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Ungulates – Hooved Mammals

Perissodactyla - horses, rhinos, tapirs - "odd toed"

Artiodactyla - pigs, peccaries, hippos, camels, deer, antelope, cattle, sheep, goats - "even toed"

Page 69: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Perissodactyla

pe·ris·so·dac·tyla (pai'ris-oh dak ti'lah): from Greek perissos, strange, of numbers odd; daktulos, a finger or toe

Page 70: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 71: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Artiodactyla

ar·ti·o·dac·ty·la (är'tee-oh dak ti'la): from Greek artios, complete, of numbers even; daktulos, a finger or toe

Page 72: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 73: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

3 Subclasses within the class Mammalia:

Prototheria or Monotremes (3 species)

Metatheria or Marsupials (275 species)

Eutheria or placental mammals (3982 species)

Page 74: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Monotremes Most primitive mammals

Only 3 species: duck-billed platypus and two spiny anteaters, or echidnas

Oviparous; eggs with a leathery shell; mothers nourish their young with milk after young hatch

Lack nipples

Live only in Australia & New Guinea

The name monotreme means one-holed (i.e.cloaca)

Page 75: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Echidna & Duck-billed Platypus

Page 76: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 77: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Marsupials

Viviparous Immature young

are incubated in the pouch

Tasmanian wolf

Page 78: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Flying Squirrel

Page 79: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Tasmanian Devil

Page 80: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Marsupial Mouse

Page 81: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Koala (Aboriginal for no drink

…They sleep for 19 hrs/day)

Page 82: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Wombat

Page 83: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Kangaroo

Page 85: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Marsupial Pouch

Page 86: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 87: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Opossum

Page 88: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

The only time you see an opossum…

Page 89: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Mammalian Orders Monotremata – Echidnas & platypus Marsupiala – Opossum, kangaroo, koala Insectivora – Shrew, mole, hedgehog Chiroptera - Bats Primates – Apes, lemur, monkey, human Rodentia – Beaver, squirrel, mice, mole,

gerbil Lagomorpha- rabbit Carnivora - Bear, dog, cat, skunk, weasel Pinnipedia –Seal, walrus, sea lion Cetacea – Whale, dolphin, porpoise

Page 90: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Mammalian Orders

Sirenia - Manatee Proboscidea - Elephant Perissodactyla – Rhino, horse

Artiodactyla – Deer, Giraffe, Hippopotamus,

Page 91: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Whale Evolution

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Page 93: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 94: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 95: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Pakicetus & Coyote Skulls

Page 96: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Pakicetus…The First Whale 53.5 mya

Page 97: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Ambulocetus

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Ambulocetus

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Remingtonocetus

Page 100: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 101: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Protocetus

Page 102: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Dorudon

Page 103: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Doruson vs Odontecetus

Page 104: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Dorudon

Page 105: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 106: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Basilosaurus

Page 107: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Basilosaurus

Page 108: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 109: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Ring-tailed Lemur (Primate)

Page 110: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Primate Characteristics General primate anatomical features Hands: prehensile with opposable thumbs tactile pads and nails on fingers and toes adapted for precision grip facilitating feeding and locomotion in the trees mobile arms: posture frees arms and hands for grasping Eyes: binocular vision color vision development of visual organs is achieved at the expense of

olfactory organs Face: large eyes and brain and reduced snout area Large brains: especially in cerebral cortex

Page 111: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Behavioral Characteristics Long infant dependency periods

Reduced litter size—usually just one (allowing mobility with clinging young and more individual attention to young)

Complicated social organization

Excellent manual dexterity

Well developed sense of sight

Good hand-eye co-ordination

Page 112: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Figure 1: Selected amino acid positions in the Hemoglobin of some vertebrates.   

Human Being SER THR ALA GLY ASP GLU VAL GLU ASP THR PRO GLY

Chimpanzee SER THR ALA GLY ASP GLU VAL GLU ASP THR PRO GLY

Primate Gorilla SER THR ALA GLY ASP GLU VAL GLU ASP THR PRO GLY

Baboon ASN THR THR GLY ASP GLU VAL ASP ASP SER PRO GLY

Lemur ALA THR SER GLY GLU LYS VAL GLU ASP SER PRO GLY

Dog SER SER GLY GLY ASP GLU ILU ASP ASP THR PRO SER

NonPrimate Chicken GLN THR GLY GLY ALA GLU ILU ALA ASN SER PRO THR

Frog ASP SER GLY GLY LYS HIS VAL THR ASN SER ALA HIS

Page 113: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

RAT DISSECTION

Scientific Name: Rattus norvegicusCommon Name: Rat

Page 114: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Rat Dissection

Page 115: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 116: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

External Anatomy

• Wash your rat

•Examine rat and take notice of the following: ears, whiskers, eyes, nostrils, anus, and nipples (only female)

Page 117: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

External Anatomy

• Wash your rat

• Examine rat and take notice of the following: ears, whiskers, eyes, nostrils, anus, and nipples (only female)

Page 118: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Internal Anatomy

• Make sure that the rat is pinned down down on its back before you begin cutting ‘Skin’ the rat by separating the skin and muscle layers across the midsection

Page 119: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Internal Anatomy

• Cut through the muscle, careful not to cut too deep, and expose the inner organs. You should be able to find the liver, stomach, small intestine, large intestine, cecum, spleen and pancreas

Page 120: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Abdominal Cavity

Page 121: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Abdominal Cavity

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Page 123: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 124: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 125: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

Thoracic Cavity

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Thoracic Cavity

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Page 128: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 129: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.

A = left ovary (embedded in fat)B = upper oviduct (where fertilization takes place)C = uterus (richly supplied with blood vessels)D = vaginaE = fat (fat deposited around internal organs)F = liver (dark red; in several lobes)G = caecum (the first part of the large intestine; H = colon

Page 130: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 131: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.
Page 132: Mammals Vertebrate Zoology What does the typical mammal look like? Small Brown Nocturnal ~4450 species.