Marine Biology Flashcards
Shark Scales
Dermal Denticles
Uses of bioluminescence in organisms
- Counter luminescence (like countershading)
- Scare predators
- Communication
- Attract a mate
- Attract larger animals to eat predators
- Lure prey
Name two organisms that DIRECTLY produce bioluminescence
- Algae
- Bacteria
- Some larger fish
How do some larger organisms bioluminesce?
- They capture luminescent bacteria in a “light organ” called a photophore
- directly produce light with a mitochondrial cell called a photocyte
What percent of bathypelagic (1,000-3,000 m) fish bioluminesce?
About 75%
Name all of the fins on a fish and if they are paired or not
Pectoral (paired) Pelvic (paired) Anal (not paired) Caudal (not paired) Adipose (not paired) Dorsal
Name the structure of the shark that holds a shark’s mate while they do the sexy thing (males only)
Claspers
Structure in the shark intestine that increases surface area
Spiral valve
Define peduncle
Structure that attaches a fish’s tail fin
What do echinoderms use to move?
Water vascular system
What is a shark’s oily liver used for?
Buoyancy control
Types of fish tail fins
Heterocercal (asymmetric, sharks) Forked Lunate (cruisers) Emarginate Truncate Rounded (reef fish) Pointed
Types of fish body shapes
Depressiform (flat) Filiform (snake like) Fusiform (tuna) Compressiform (tall and flat) Sagittiform (small head, long body) Taeniform (ribbon) Globiform (round) Anguilliform (long and round)
Types of fish scales
Ganoid (primitive) Placoid (teeth like) Cycloid (thin, round, common) Ctenoid (cycloid with combs) Cosmoid Scaleless
Name of the zones of a coral reef from the shore to the ocean
Reef flat sone (lagoon or back)
Reef crest (algal ridge)
Fore-reef (buttress zone)
Deep fore-reef wall
