Deep-Sea fishes Flashcards
What are visual adaptations that allow deep-sea fishes to deal with the dark?
bioluminescence
phosphorescence
large eyes
reduced eyes (naked retina)
What is bioluminescence?
generation of light from living organism due to symbiotic bacteria
What organs ‘do’ bioluminescence?
photophores
What is use of bioluminescence?
for signaling, or attracting prey or mates
What is phosphorescence?
reflection of light and changing of its wavelengths or patterns
What do large eyes help deep-sea fish with?
they are good for taking in light- often pointed up too
What is a naked retina good for?
increases wavelengths of light absorbed
What other senses or heightened in deep sea fishes due to a lack of light?
tactile/mechanosenses
chemosenses
What is the only form of primary production in the deep sea?
bacteria at hydrothermal vents
how are deep sea fishes adapted to an environment with no to little food?
decreased metabolic rate
giant mouth
giant stomach = expanding guts
large teeth
how are deep sea fishes adapted to cold temperatures?
decreased metabolic rate?
WHat is the name for a fish that moves between deep water and further up?
mesopelagic
What is the name for a fish tha lives exclusively in deep sea?
bathypelagic
What is a way in which deep sea fish combat low density?
parasitic males that attach to and feed on females and reproduce with them
