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