3.1 –Reproduction, senses and communication 3.2 – Reproduction, senses and communication Week 3.

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Presentation transcript:

3.1 –Reproduction, senses and communication 3.2 – Reproduction, senses and communication Week 3

Chapter : Sensory Biology

Fish Eye

A fish’s view through the water surface

Specialized eye placements

Anableps

Periophthalmus

No eyes Third eye

Chapter 21 – Hearing, Balance, lateral line and electricity

Otic Region of the Skull

Inner Ear of a bony fish

Otolith

Neuromast organ (hair cell)

Weberian Apparatus Ostariophysian fishes

Herring, anchovies, sardines….

Lateral Line

Trunk and cephalic lateral line ratfish

Lateral Line

Electrosensory systems

Passive electrosensory systems

Ampulla of Lorenzini

Active electrosensory systems

Mormyridae (Osteoglossomorpha)

Magnetic field sensors?

Electrical Generation

Strong dischargers

Electric ray Electric stargazer

Strong dischargers Electric eel Electric catfish

Weak dischargers gymnotids mormyrids

Weak dischargers some rays electric eel

Fishes and sound

stridulation drumming

Trichopsis Croaking gourami

Chapter 22 – Chemosenses – Olfaction, taste and misc.

Taste (gustation) Olfaction

Olfactory rosette

External nares

Olfactory structures – basic anatomy

Olfactory rosette

lungfish Internal nares (choanae)

Deep sea angler fish

Taste (gustation)

Taste bud

Chapter 23 – A bit about feeding and food

Tooth bearing bones in fishes

Gill rakers

Basking shark Herring

Pharyngeal Jaws

Digestive tract

Lamprey Herbivorous fish

Chondrichthyes and lower bony fishes

Chapter 25 – Osmotic Balance

Marine Both Freshwater

Aquatic Tetrapods

Freshwater fish Saltwater fish

Freshwater fishes

Armor Scales

Lampreys Elasmobranchs Teleosts Freshwater

Freshwater Teleost Hypo-osmotic to environment

Hagfish

Marine Elasmobranch

Latimeria (living coelacanth)

Marine Teleost Hyperosmotic to environment

Diadromy

Anadromous

Catadromous

Coastal Marshes

Tidepools

“Seawater Farms Bringing Life from Deserts and Seawater” tilapia