CIRCULATION COLD BLOODED; Poikilothermic 2 CHAMBERED HEART

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Presentation transcript:

CIRCULATION COLD BLOODED; Poikilothermic 2 CHAMBERED HEART RED SWIMMING MUSCLE IN TUNA AND PELAGIC SPECIES Warmer than body temp. Myoglobin Oxygen storage

FOOD GETTING FILTER FEEDERS; USE GILL RAKERS, examples; Herring, Anchovies

VARIOUS SPECIALIZED TEETH SHEEPHEAD; crushing teeth QUEEN TRIGGER; urchin eater Parrotfish; Parrot-like beak, coral eater BARRCUDA; needle-like teeth PERCH; small teeth

Other feeding styles; “Slurp-gun” technique; ex. Sea horse

SCALES FUNCTION; STREAMLINING, slippery mucous covering PROTECTION; physical harm and parasites osmotic balance balance of water and salts

VARIATIONS IN SCALES SCALES ABSENT IN MORRAY EEL SCALES FUSED IN THE SEA HORSE TO FORM A HARD OUTER COVERING.

KIDNEY FUNCTION REMOVAL OF NITROGENOUS WASTE (ammonia, urea etc.) MAINTENANCE OF OSMOTIC BALANCE

FRESH WATER FISH EXCRETES LOTS OF WATER WELL DEVELOPED KIDNEY SALT WATER FISH DRINKS LOTS OF WATER EXCRETES LITTLE WATER EXCRETES EXCESS SALT (KIDNEYS AND GILLS)

REPRODUCTION OVIPAROUS; eggs fertilized outside the body, development external. Examples and variations; Nest builders= stickleback Mouth Breeders= Jawfish

OVIPAROUS (Contd.) Eggs adrift in the plankton= pelagic species (swordfish) Eggs laid on shore (beach)= Grunion

OVOVIVIPAROUS; Fertilization internal. Development internal. Young are born ‘alive’. Example= Perch