Marine Anthropods

What's echinoderms body like?

Spiny skins, endoskeleton, ossicles (Ca plates held tg w/ connective tissue), pedicallular (tiny, pincher like structures around bases of spines)

What do echinoderms eat?

crustaceans, plankton, lots of things

How do echinoderms reproduce?

water column ( drop eggs and sperm cells ), or asexual when regenerate

What's Ophiuroids body like?

5 arms, slender, covered w/ spines, tube feet NO suckers

How do Ophiuroids reproduce?

reproduce in Open h2O, can regenerate

True/ False: Ophiuroids avoid light, and are burrowers

True

What's a Sea Urchin's body like?

hard exoskeleton/ endo under

Are sea urchins venomous?

yes

How do sea urchins reproduce?

water column (open water)

What's a sea cumcumber's body like?

elongated body, lung gas exchange

What's a sea star's body like?

5 arms+ central disc, suckers at end of foot

How do sea stars reprduce?

regenerate, sperm+ eggs freely into H2O, only one mating szn a year,

Barnacles are the _________ sessile crustacean?

ONLY

What's a Barnacle's body like ?

Chirped ( feathery appendages extend into H2O to filter food )

How do Barnacles reproduce?

hermaphrodic

How do Barnacles feed?

filter feeders

______________ are the most abundant planktons.

Copepods

What's a copepod's body type?

plankton type, ( look like roach )

True/ False: Copepods live at all depths

True

How do Copepods feed?

eat each other (biggest one wins), gliders

food for whales, sharks, birds, fish

Which species are Males smaller than females?

Copepods

What species is labeled as " sea fleas "?

Amphipod

What do Amphipods leave for predators?

make bad tasting chemicals for predators

What's a Amphipod body look like?

posterior 3 part appendages, jumping, burrowing

how do Amphipods feed?

plankton/ lil things on sand (scavengers)

How do Amphipods reproduce?

males carries females beneath them f/ days to fertilize (still external)

Most Krills are ...

Bioluminescence

Krills swarm in ...

large masses

What's a krill look like?

this

How do Krills feed?

eat plankton, get eaten by whales, seals, penguins, fish, ect.

krills shed so fast they literally, __________________________________(molds fastest)

jump out of their skin

Krill have Photophore which is...

light producing organ, attracts

Mantis Shrimp are mostly ... burrowers

tropic

true/ false :Mantis Shrimp have Movable fingers 2 appendages f/prey + defense

true

Mantis Shrimp do what to prey?

spear or smash

How cute which species pair f/life - up to 50K eggs?

mantis shrimp

Decapods contain:

crabs, shrimp, lobsters

Describe decapods body?

10 legs ( 5 pairs ) , chelipeds (crushers) 1st pair,

How do Decapods feed?

eat hermit crabs, soft belly, steal shells, starfish, ect

How do decapods reproduce?

external eggs

Sea spiders are found in all oceans but perfer ____________________

polar

Sea spiders can go _________________ deep

6000 m

What's a sea spider's body like?

small thing bodies, 4 pr walking legs

How do Sea spiders feed?

eat soft bodied invertebrates and cnidarian juices

How do Sea Spiders reproduce?

males carrying eggs

What's a Horseshoe Crab body like?

cephalothorax- appendage, abdomen-gills, telson- spikes f/ steering+defense, carapace- covering

How do Horseshoe Crabs feed?

night-worms, mollusks' algae ( scavengersc)

How do Horseshoe crabs reproduce?

females lay eggs, than fertilized lay males, males sm smaller than females

Horseshoe crabs tend to like .... waters

deep

Arthropods take up _____% of animals.

75

Arthropods have _________ skeletons, __________ appendages, _____ body segments, and intense ______________ system

exo, jointed, 2, nervous

There's two categories of arthropods,

Chelicerate, Mandibulate

Chelicerate's have _______ appendages, No _________ , and include:

oral, Jaw, horse shoe crabs

mandibulate (crustaceans) have mandible _____________ and include:

chewing, decapods, krill, copepod, amphipod, barnacles

What's a photophore?

to switch the light on or off, but also to produce coded light flashes, to communicate with each other.

why called mandibulate?

chew jaw

true false most crabs can swim

false

amphipods have ____ sections

3

which animal carries females to fertilize

amphipod

starfish have a _____skeleton

end

starfish have five arms tube feet and __________

suckers

what is cephothorax?

head and thorax

most arthropods fertilize eggs __________

externally

most echinoderms fertilize in __________________

H2O column

Ophoinoids are most like what other class ?

seastar

what are the venomous things called?

spuresace

which organism eviscerates internal organs?

sea cucumbers

whats sea urchin called?

holothurin

sea spiders drink...

jellyfish blood

horeseshoe crabs covered entirely by ....

carapace

True false telson is dangerous

false