Species: Xenopus laevis

Habitat: 22 degrees C Range (21-23) C

Day: 11 Stage 49

Photos taken from my iPhone

Observations:

Resting and Resting with just tail moving, resting on their sides, little tadpole not moving

Swimming- In circles, around edges of container

Social behavior- isolation in corners , social resting, bumping into each other, larger ones avoiding smaller one, chasing one another,

Feeding- pushing the food

Response to light-resting

Jolting- swimming in circles fast

Added Magnet- one tadpole slowly moving towards magnet, moved away

Added a third tadpole other larger ones are avoiding

Added other 2 other tadpoles, they are all keeping to themselves, one hiding under magnet

Time Interval Observation Over a Span of 5 Minutes

Behavior 1 Minute 2 Minute 3 Minute 4 Minute 5 Minute
Resting xxxxx xxxxx xxxxx xxxxx xxxxx
Hiding xx x xx x x
Isolation x xxx xxx
Bumping x xx x x
Swimming xxx x x x
Rest With Tail Motion x

x= Number of tadpoles involved with a particular behavior at a time interval between 1-5 minutes.

-This was continuous sampling, and we had a pre-set time to observe in minute intervals.

Ethogram

Behavior Type Behavior Description
Feeding Nudging food

 

 

Pushing food around the dish

 

Swimming Circles

 

Jolting

 

 

Slow

Swimming fast around in circles

 

When dish was moved or touched, the tadpole would jolt away

 

Swam slowly around dish with no direction

 

Resting Sitting

 

Tail Movement

Not moving, in one spot

 

Resting with only the tail moving

Social Behavior Bumping

 

 

Chasing

 

Resting together

Would bump into others and then swim away

 

Would chase each other around the dish, sometimes after bumping

 

Will rest in one spot together

 

 

Question: If there are more tadpoles in the container are they more social with each other or do they try and stay isolated?

Hypothesis: Tadpoles are more social when they are in larger groups

Prediction: If tadpoles are more social when they are in larger groups, then they will have more interactions and be less isolated.

Conclusion

We started observing 3 tadpoles and they all seemed to be on opposite sides of the container isolating themselves. When we added 2 more, they had less space to swim around, therefore being forced to interact with one another (bumping, resting next to each other, chasing). This confirms that our prediction could be correct.

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2 thoughts on “Tadpole Ethogram

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