Reef Octopus Show

Reef Octopus Show - top Oc reus Bria us ctopus Reef O...

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Unformatted text preview: top Oc reus Bria us ctopus Reef O ibbean Car Scientific Classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Octopoda Family: Octopodidae Genus: Octopus Species: Octopus Briareus Body Make Up: Boneless “Chunky” Body Ranges in Size from 40 cm to 60 cm—at most 100 cm. Max Weight = 1.5 kg/ 3.3lbs. The Octopus is a cephalopod Cephalopod – means “head-footed” Eight arms are connected to the head. In-Depth Anatomy of The Common Reef Octopus Mantle – (the head) used to help breathe and move Water is drawn in through slits behind the mantle water is stored in the mantle slits close and water is ejected through siphon In-Depth Anatomy Cont’d… Funnel (Siphon) – allows octopus to jet propel for movement, breathe out, and expel its ink to hide Very important for the octopus’ survival In-Depth Anatomy Cont’d… Beak – the only hard part of its body/located in its’ mouth Made of fingernail-like material Used to kill prey and bite it into pieces In-Depth Anatomy Cont’d… (3) Hearts – Two pump blood through to the gills. One pumps blood through the body. (8) Arms – Used for most of what the octopus does (Movement, hunting, eating, etc…) Each arm has 2 rows of suction cups, or suckers used to help catch prey and for movement. In-Depth Anatomy Cont’d… Eye • • • • 180° Horizontal Stripe is the pupil Octopi are color-blind, but have great sight of tone and texture has same human eye characteristics: • retinas • Eyelids • Pupils • Cyrstalline lenses • Defense Mechanisms (Its’ Getaway) Camouflage ⇒ ⇒ ⇒ Changes Skin Texture, Color, and Pattern Chromatophores – specialized skin cells that allow the octopus to change color (tiny sacs of pigment) Helps to warn and communicate with other octopi Camouflage Mechanism Defense Mechanisms… Ink Ejection Squirts out a think dark ink that lingers for several seconds Allows octopus to turn pale and escape discretely. Ink dulls smell (a shark predator’s primary sense) “Hey! You made me ink!” Reproduction (Baby Octopuses ) Reproduction (Baby Octopuses Cont’d…) Take parenthood very seriously – to the point of death, LITERALLY. Occurs usually during January Lasts 1-2 months Reproduction Process Male initiates mating process Spermatophores are carried to the female’s oviduct – she then returns to her den Attaches ≈500 large eggs to ceiling and rests until hatching male passes spermatophores down a grove in 3rd right arm Male “mounts” female and inserts the hectocotlyus into her mantle After 50-80 days, eggs are ready to hatch! … After 140-150 days, babies are fully matured! Eating Habits Eating Habits Feed on Crab, Shrimp, and small fish Crab mostly – Shrimp is too fast and too hard to catch! ...
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