Phylum Chordata Subphylum Vertebrata. Fishes Chapter 8.

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Presentation transcript:

Phylum Chordata Subphylum Vertebrata

Fishes Chapter 8

Larvae of a jawless fish *Cranium *Vertebrae Skeletal elements of a jawless fish Subphylum Vertebrata

Jawless Fishes

Jawless Fishes – ancient diversity

Jawless fish: Hagfish

Jawless fish: Lamprey

Hagfish Lamprey Jawless Fishes – modern diversity

lampreys Jawless Fishes – modern diversity

Jawed Vertebrates *Jaws *Paired fins Fossil placoderm

Class Chondrichthyes Cartilaginous fishes

Class Chondrichthyes

Paired fins Placoid scales

Class Chondrichthyes

Shark Diversity

megamouth shark Megachasma pelagios Pygmy shark Squaliolus laticaudus Rhincodon typus Whale shark Mitsukurina owstoni Goblin shark Shark Diversity

Ampullae of Lorenzini

Shark Conservation

Manta birostris Skates and rays

Electric Ray Narcine brasiliensis

Hydrolagus colliei Ratfishes or chimaeras

Class Osteichthyes bony fishes

Class Osteichthyes Bony skeleton

Complex and adaptable Class Osteichthyes Mouth

Class Osteichthyes scales

Class Osteichthyes Fins and tail

Class Osteichthyes Gill cover

Class Osteichthyes Buoyancy

Fish diversity

Fishery Exploitation

Mobility Tuna

Body form and niche Flounder

Body form and niche seahorse

Body form and niche Porcupine fish

Body form and niche jawfish

Coloration

Jaw protrusion Feeding

Jaws

Filter feeding anchovies & sardines

Filter feeding Gill rakers

Vision

Taste Olfaction

Lateral Line

nerves

Lateral Line

Fish behavior and life history

Territoriality

Fish Schooling

Fish Migrations

Anadromous

Fish Migrations Anadromous

Fish Migrations Anadromous

Fish Migrations Catadromous

Coelacanths

Lobe-finned fishes Lobe Fins

Fossil lobe-finned fishes

Christmas 1938 Port Elizabeth, South Africa

Original letter from Majorie Courtney- Latimer to J.L.B. Smith

23 Dec. 1938

J.L.B. Smith Majorie Courtney- Latimer

Marjorie Courtney Latimer's odd fish

The first coelacanth

The Search for more….

The Second Coelacanth 1952, Comoro Islands

Back in South Africa

The Second Coelacanth 1952, Comoro Islands

Dr. James Millot ALL living coelacanth research moves to Paris

J.L.B. Smith Institute of Ichthyology Grahamstown, South Africa

Lobe-finned fish Living Coelacanth

Latimeria chalumnae

a second species from Indonesia Sulawesi, Indonesia, 1998 Latimeria menadoensis