Read Scientists Fight Back Against Killer Worm
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Mollusks & Annelids
A. Web site name : BBC News Web URL : http://news.bbc.co.uk/2/hi/uk_news/northern_ireland/2039580.stm
Read “Scientists fight back against killer worm”
1) The flatworm was originally from which country?
2) Why are fishermen concerned about the spread of this flatworm?
3) What evidence is there for damage to soil quality caused by the loss of earthworms?
4) How could the Tasmanian gnat help?
5) What “gnat problem” do you think you could end up with?
6) How did the flatworm arrive in Belfast?
7) Is the spread of the flatworms deliberate or accidental?
8) How much did grass yields increase in New Zealand when earthworms were introduced?
9) Overall, do you think it is a good idea to introduce species from one part of the world into a new area? Briefly explain your answer. B. Web site name: Monterey Bay Aquarium
Web URL: http://www.montereybayaquarium.org/animal-guide/octopus-and-kin/chambered-nautilus
Read “Chambered nautilus”
10) How long has this species existed?
11) What is unusual about its tentacles?
12) Why does it stay deep underwater during the day?
13) How does the nautilus control the direction that it swims?
14) What is its diet?
15) Why does this aquarium not sell sea shells?
16) How many chambers in it is shell does an adult nautilus have?
17) How does a nautilus control its buoyancy?
18) What is odd about their gender ratio?
C. Web site name: Jacksonville Shell Club
Web URL: http://www.jaxshells.org/danger.htm
Read “Danger! Snail on the prowl”
19) What is the scientific name of the Rosy Wolfsnail? 20) Why is it unusual?
21) Where and why were they introduced to islands?
22) What problems did the introduction of these snails cause in Hawaii?
23) Are these snails common or rare in northeast Florida?
24) What is their “mating ritual”?
25) What is their favorite prey of these snails in captivity?
26). What can the snail eggs be mistaken for?
D. Web site name: BBC news
Web URL: http://news.bbc.co.uk/2/hi/health/4327204.stm
Read “Snails’ pace “clue” to behavior.
27) Why are scientists studying snails?
28) Where are “basic level” neurons found in humans?
29) What is the function of “pattern generator” circuits?
30) What type of behavior in Aplysia was studied? 31) What human applications does this work have?
E. Web site name: Cephalopod page
Web site address: http://www.thecephalopodpage.org/
Read “Introduction to the Cephalopods”
32) What is one difference between the bivalve molluscs and cephalopods?
33) Which cephalopods have no shell at all?
Click on “Cephalopod Species” near the top of the page
Click on two species from two different orders.
34) Give the names of the two species, and some information that you have found out about these species :
Go to: http://www.thecephalopodpage.org/behavior.php and read about behavior.
35). What are three interesting things you have found out about octopuses?