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Prey & Predators

Habitat

Prey: phytoplankton, detritus, small zoo plankers

Reproduction & Growth

Predators: other filter feeding

interbrates, fish, crab

they bite off their heads and

tentacles

their defense is withdrawl of

their fan head

sexual

found on the underside of remote docks

on pilings right under surface of water

cling onto hydroids, bryozoans, plants, and rocks

external fertilization

young larvae become part of plankton but develop within 3-4 weeks to find a hard surface

Observations

During our experiment, we noted when we

placed the kelp near Eudustylia Vancouveri

it took a long time to relax back into its full

form rather when we placed plankton near

them

Experiment

and this is what they look like inside

We isolated five different feather duster worms into a separate tank. Then we tapped the worm with the kelp first and then the plankton. We timed them both to compare the amount of time it took for the feather duster worms to relax again.

Animalia

"having breath"

multi-cellular

Annelida

heterotrophic

lacks cell wall

"little ring"

generally motile

undergo metamorphosis

aggregation of senses in one place

Eukaryotes

segmented worms

repeating sets of organs

Conclusion

"true kernel"

soft bodied

bilateral symmetry

Experiment

Single-celled or multi- cellular

Eudistylia Vancouveri

membrane- bound structure

Taxonomy

The experiment supported our hypothesis.The Eudustylia Vancouveri sensed that the plankton was not a threat and rather food so it relaxed much faster than the kelp. The Feather duster worm sensed that the kelp was a threat and the plankton was food.

Polychaeta

"many hairs"

segmented appendages

presence of setae

free swimming larvae

Hypothesis: If the Eudustylia Vancouveri retracts as a defensive response,

then is the amount of time they take to release back into their relaxed forms

shorter when they retract to consume

food than when they retract from a

sense of harm or danger?

Canalipalpata

bristle-footed

fan headed

AKA Feather Duster Tube Worms

Domain: Eukaryote

Kingdom: Animalia

Phylum: Annelida

Class: Polychaeta

Order: Canalipalpata

Family: Sabellidae

Genus: Eudistylia

Species: Vancouveri

Sabellidae

circle of gills around head

polychatae tube worms that build tubes out of a

calcium carbonate they secrete or a mucus which

collects parchment, sand, bits of sand

smooth

lack parapodia

Eudistylia

Vancouveri

filter feeder

head formed prostomium and peristomium

fan headed marine polychatae worm

secrete mucus that collect and glue

medium sized particles together to build the tube

large particles are rejected

tentacles collect food and oxygen

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