Lesson 5 living where land and water meet fiddler crabs
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Lesson 5: Living Where Land and Water Meet: Fiddler Crabs. Fiddler Crab Habitat Proposal Draw and describe your ideas for the fiddler crab’s classroom home. Question : What will the crab need in its habitat to survive?

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Lesson 5: Living Where Land and Water Meet: Fiddler Crabs

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Lesson 5: Living Where Land and Water Meet: Fiddler Crabs

Fiddler Crab Habitat Proposal

Draw and describe your ideas for the fiddler crab’s classroom home.

Question: What will the crab need in its habitat to survive?

Hypothesis: Use the Animal Background sheet to predict what the crab needs.


ANALYZE: What are the elements of the fiddler crab’s habitat?

TG 24


Build the fiddler crab

habitat and illustrate.


Schedule

  • Feeding

    • Feed once a day.

    • Put food in water and on land.

    • Remove old food before adding fresh food.

    • Can also feed small pieces of apple, banana, or lettuce on the sand.

  • Water

    • Change the water once a week.

    • Slowly lift the water bowl, dump the water, rinse the bowl, replace the bowl in the habitat, and refill water.

    • Important not to spill water onto the sand.

  • Move habitat gently.


Feeding Observations

  • Put plankton in water and on land.

  • What happened when you put food in tank?

  • Do the crabs respond to the food the same way the frogs do?

  • How are the crab’s responses different?


HABITAT INFO CHART


Animal Studies Log Checklist


Fiddler Crab Observations Chart

Observations should be made daily.


Reading Selection

Read the selection and answer the following:

1. Write 2 or 3 things you discovered about how people study dolphins.

2. How is the animal research you are doing similar to the dolphin research being done at the research center? How is it different?

3. How is your animal log similar to the data sheet the research center is using? How is it different?


Extensions

  • Research other kinds of crabs and create a display.

  • Use a Venn diagram to compare the classroom habitat of the crab with its natural habitat.

  • Feed the crabs a variety of foods to discover which the crabs prefer. Experiment with tuna flakes, shrimp pieces, green vegetables, and fruits.

  • Crustaceans are a popular food source for humans. Research the nutritional value of crustaceans, as well as diverse ethnics dishes that use these animals.


Lesson 6: Observing the Fiddler Crab More Closely

Question: What characteristics of the crab help it to survive in its natural habitat?

Hypothesis:

Plan: Observe the features of the frog in a tank and in a cup using a hand lens.


Observation: Observation Chart


Draw an illustration of the

fiddler crab.


(sef-uh-loh-thawr-aks)

TG p. 51

kee-luh


(sef-uh-loh-thawr-aks)

kee-lee

kre-puhs-kyuh-ler


Fiddler Crabs

  • Indigenous to U.S. costal areas

  • Brackish marshes

  • Body Structure

    • Head/thorax and small abdomen

    • Eyestalks

    • 2 pairs of antennae—smell and touch

    • Claws

  • Semiterrestrial

  • Life span of approximately 2 years


Take Home Activity Lesson 6 Blackline Master


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