Heterocercal



Дата25.04.2016
Памер5.08 Kb.
#29344

  1. OSTEICHTHYES

    1. BONY FISH

    2. FINS

      1. CAUDAL  FORWARD MOVEMENT

      2. PAIRED FINS

        1. PECTORAL  TURNING AND STOPPING

        2. PELVIC  TURNING AND STOPPING

      3. MEDIAL FINS

        1. DORSAL  BALANCE

        2. ANAL  BALANCE

    3. CAUDAL

      1. HOMOCERCAL

        1. SAME / SYMMETRICAL

      2. HETEROCERCAL

        1. NOT SAME / ASYMMETRICAL

    4. ASPECT RATIO

      1. SHOWS FAST VERSUS SLOW SWIMMERS

      2. FAST SWIMMERS HAVE A HIGH ASPECT RATIO (LUNATE/FORKED)

      3. SLOW SWIMMERS HAVE A LOW ASPECT RATIO (ROUNDED)

    5. GILLS

      1. SEPARATE OXYGEN FROM THE WATER

      2. OPERCULUM – GILL COVER

      3. THREE PARTS

        1. GILL ARCH  SUPPORT

        2. GILL RAKER  FILTER

        3. GILL FILAMENT  ABSORPTION OF OXYGEN

      4. COUNTER-CURRENT EXCHANGE

        1. BLOOD AND WATER FLOW IN OPPOSITE DIRECTIONS

    6. SWIM BLADDER

      1. HELPS WITH BUOYANCY (FLOATING)

    7. LATERAL LINE

      1. DETECTS VIBRATIONS IN THE WATER


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