Group 7OPERCULUM MOVEMENT

Members: MODANZA, ESPANTO, SAJOL, CUIZON

I.OBJECTIVE/PROBLEMS:

Objective:

This experiment aims to assess whether or not the operculum movement of fishes is affected by the quality of aquatic environment the fish is present in.

Main Problem

What is the effect of the type of water and increased phosphorus content in the habitat on the operculum movement of fishes?

SPECIFIC PROBLEMS:

• How does the fish react to the detergent that is put in its habitat?

• How is the rate of the fish’s operculum movement affected by the change in its habitat?

• What are the signs that the fish had exhibited regarding its new surroundings?

• How did the condition of the fish without detergent differ from that of the fish with detergent?

II. MATERIALS:

• Graduated Cylinder

• Foldable Magnifier

• 2 identical bowls

• Detergent• Water• Timer• 2 identical

fishes

Variables:Dependent

Variable: Fish’s response

Independent variable: Amount of detergent

Controlled variable: amount of water, depth of container, , time element

III. PROCEDURES:

1. The materials were gathered.2. Two identical bowls were labeled A

and B and filled with 800 ml of water each.

3. Each of the two fishes was placed in either of the two bowls and were labeled setup A and B respectively.

4. Each of the bowls was placed under the foldable magnifier and operculum movement was then determined in each of the two setups (A and B) in the time span of one minute.

5. 10 ml of detergent was then measured in the graduated cylinder and poured into setup B.

6. Setup B was then observed for one minute.

7. After a minute, the fish in setup B was transferred to container with clean water.

8. Operculum movement was again observed in the container for one minute.

IV.RESULTS & DISCUSSIONS:

Results

SETUP A SETUP B

SETUP A• Lively• Vertical Swimming• Clear Eyes• Normal operculum

movement (76 c/min)

SETUP B• Occasional convulsions• Horizontal swimming • Cloudy eyes• “Death Roll”• Slowed operculum

movement (46 c/min)

Discussion

R ed Oranda ( Carassius auratus)

Detailed external features of a Goldfish

Detailed internal features of a Goldfish

PARTS OF A FISH

Nostrils

Mouth

Operculum

NOSTRIL

Find the nostril of the fish.

BACK

MOUTH

BACK

OPERCULUM

BACK

OPERCULUM GILLS

BACK

WATER

Oxygen depletion

No aquatic plants

Tap water is used

Metals like chlorine and chloramine

Increased phosphorus

content

Operculum movement is

slowed

Pre-death symptoms

• Occasional convulsions

• Horizontal swimming • Cloudy eyes• “Death Roll”(46 c/min)

Death

V. Conclusion

Based on the data presented above, we can therefore conclude that:

The operculum movement of fishes is affected by the quality of aquatic environment the fish is present in,

since the fish was not able to survive in the new type of environment (with the presence of detergent and the new kind of water in the container).