cuttle fish

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  • Fig. 16.37
  • cuttle fish

    1. 1. • Cuttlefish (Sepia latimanus) | : the common name is cuttlefish. Cuttlefish belong to the class cephalopoda. are widespread in the south and east China Sea, found in the Indonesia south to northwestern, and south to northern Australia. Typically live in warm and temperature shore waters, they eat chrimp, crap, small fishes. Cuttlefish have soft body. they are reproduce by sexually and lay eggs that hatch writhen a few weeks to months. Have large Brian-to-body ratio of invertebrates(2),(4).
    2. 2. • Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Sepiida Family: Sepiidae Genus: Sepia Subgenus: Sepia Species: S. latimanus(2).
    3. 3. • Feeding Behavior :Broadclub cuttlefishes, Sepia latimanus, hunt during the day and appears to mesmerize prey with its rhythmic colored bands. They feed on small fishes and crustaceans(4).• Averaging about 30cm in length (giant cuttlefish can grow up to 100cm)• MOVEMENT:cuttlefish have fins that can move very differentlly than of other fish’s fins.They move by moving their back fins in wave-like motion and cuttlefish is able to move slowly backwards or forwards(3).
    4. 4.  body is bilaterally. Head region is well developed .Cuttlefish have 8 arms and tentacles that all have chitinous ringed sucker(4). Their eyes are remarkably similar in construction to human eyes and there is an unmistakable feeling that you are dealing with a creature of intelligence when you find yourself in a staring contest with a cuttlefish (2).They have a bone in the middle of their bodies, known as a cuttlebone, filled with gas, which is used as a buoyancy control device. Have fin around body is used for swimming.
    5. 5. Complete digestive tract Digestive glands Specializedfeeding structures.Circulatory system Heart (2 chambers Closedin cephalopods Coelom restricted to pericardium in most casesAdvanced nervous system (Brain, Sensory organs Eyes (simpleand camera) Sensory papillae (5).
    6. 6. Reproduction Sepia latimanus mates inshallow water between Januaryand May. This species mateshead-to-head and the maleplaces spermatophores on thefemales buccal membrane nearher mouth. The eggs harden afterthey are laid. Their eggs hatch in38 to 40 days. During thebreeding season, males establisha territory, defending a coralhead where females lay eggsafter mating(2).
    7. 7. Lay eggs in water until hitch is become out sidesmall animal like parent but small in size. After thatbecame adult.
    8. 8. Reference1-Life-sea.blogyspot.com

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