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Bio 1080 Ch 16
Terms in this set (11)
Mesopelagic animals days are spent in the mesopelagic and nights feeding in the epipelagic
also know as Photophores: include countershading or transparent
-No countershading needed as no light is present
- present in the upper portions of the deep sea, but its occurrence decreases with increasing depth
male angler fish (much small than the females) attach to the females and receive their nutrition from them and fertilize the female's eggs
Deep sea gigantism
many animals tend to be larger than counterparts in shallower marine communities
Adaptations of non-migrating Mesopelagic fishes
Weak bones, flabby and watery muscles, no swim bladder for neutral buoyancy
What are some of the reasons why an organism might have bioluminescence?
to be used for courtship, communication, and/or prey attraction
What are some of the characteristics of bathy-, abysso-, and hadal pelagic organisms?
-Absence of swim bladders, flabby muscles, and light, weak skeletons
-The mouth is also large with long, pointed teeth
-Less developed nervous and circulatory system
What are the zones of the deep sea. Starting from the surface of the ocean, put them in order of increasing depth.
Anything below mesopelagic is deep sea
What limits life in the mesopelagic and deeper?
-Due to a reduction in the amount of food available
-No photosynthesis in this perpetually dark environment
What are conditions like in the bathy-, abysso-, and hadal pelagic?
•Uniform salinity and water chemistry
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