| Coverage : Take the Crab:Chinese Mitten Crab Quiz and discover some interesting facts about the burrowing crab which can cause substantial damage to unprotected riverbanks. |
| 1. | The Chinese mitten crab is a burrowing crab whose native distribution is the coastal rivers and estuaries of the Yellow Sea in: |
| a. | | China |
| b. | | Korea |
| c. | | Thailand |
| d. | | Germany |
| |
| 2. | The mitten crab is catadromous, i.e. adults reproduce in salt water and the offspring migrate to fresh water to rear. |
| a. | | True |
| b. | | False |
| |
| 3. | Another interesting fact about this crab is that both sexes die soon after reproduction. |
| a. | | True |
| b. | | False |
| |
| 4. | Mitten crabs are omnivores eating mostly: |
| a. | | Vegetation |
| b. | | Small vertebrates such as worms and clams |
| c. | | Krill |
| d. | | Shrimps |
| |
| 5. | The main identifying features of the mitten crab are: |
| a. | | The dense patches of hairs on the claws |
| b. | | White-tipped claws |
| c. | | the four spines of the shell |
| d. | | Being a catadromous species |
| |
| 6. | It is illegal to import, transport, or possess live Chinese mitten crabs. |
| a. | | True |
| b. | | False |
| |
| 7. | In recent times, which river has experienced a population explosion of the crabs? |
| a. | | River Thames |
| b. | | Yellow river |
| c. | | Yangtze river |
| d. | | All of the above |
| |
| 8. | Which of the following are true of the Chinese mitten crab? |
| a. | | They migrate in large numbers |
| b. | | They are adept walkers on land |
| c. | | They are good swimmers |
| d. | | They eat other juvenile mitten crabs |
| |
| 9. | What threats does the expansion of mitten crab population pose to humans? |
| a. | | Ecological |
| b. | | Economic |
| c. | | Human health |
| d. | | All of the above |
| |
| 10. | How many eggs does a female mitten crab lay at a time? |
| a. | | 400,000- 1 million |
| b. | | 200,000- 1 million |
| c. | | 250,000-1 million |
| d. | | 300,000- 1 million |
| |
| 11. | Juvenile mitten crab are: |
| a. | | Herbivores |
| b. | | Carnivores |
| c. | | Omnivores |
| d. | | Nocturnal |
| |
| 12. | Who are the predators of Chinese mitten crab? |
| a. | | Sturgeon, striped bass and channel catfish |
| b. | | Bullfrogs, raccoons |
| c. | | River otters and wading birds |
| d. | | All of the above |
| |
