1) Field Trip + Report
2) Research article + comments
3) Make something related to science
Here are my projects:
1) Science ACE Term 2
Name : Teo Xue Shen (26)
Class: 2P3
Field Trip Report: Trip To Pasir Ris Fishing Pond
Date: 29-4-12
Place: Pasir Ris Fishing Pond
Brief Description of Trip:
My family and I set out in the afternoon to Pasir Ris Fishing Pond to try to catch some
snapper fish. Pasir Ris Fishing Pond is a salt water pond with two main types of fish, the
snapper and the white pomfret. As we were aiming to catch the snappers, we bought small
life fish as bait. We brought portable battery operated air pump to generate air for the small
fish. Upon arrival, we paid $50 per rod to start fishing. After about half an hour, I caught
my first snapper. it was the strongest fish I ever fought with on the fishing rod. Weighing
about 2kg, the fish was literally ripping the line out of the reel. the strength of the fish was
unbelievable. Every time I got it within 10 meters from shore, it would get a sudden burst of
speed and drag some line out again. After fighting it for about 5-10 minutes, the fish grew
weary and gave up. It was the biggest fish I ever hooked. A special tool was used to clamp
down on the jaw of the fish to hold it in place while I took a picture. Then it was placed into
a netted black basket which was tied to the side of the pond and immersed in the water to
keep it alive. A grand total of 6 snappers were caught that day.
Fishing Gear: 1x1.5m fishing rod, 8-15lb, medium action
1 x fishing reel, line cap 122 yards, 3 ball bearings, gear ratio 5.2:1
Nylon line
Live Small Fish as bait
Some Major Takeaways:
-snapper fish prey on small fish
-snapper fish and pomfrets can co-exist together in a confined space
-pomfrets feed on prawn and not fish
-more energy is used when fighting a fish on a line than grabbing it with your hands
-snappers and pomfrets can survive in murky environments
-it is possible to get dragged into the water by a powerful fish
-fish can have great strength
- to reel up a very heavy fish require a lot of strength, skills and experiences
I feel that fishing is a very fun outdoor activity and it can help to strengthen family bonds.
It is also a way to relax. Fishing helps develop patience as the fish normally takes time to
get hooked. There is a great deal of excitement when the fish is being reeled up. Family
members tend to help each other to take care of the rods when the other member is taking a
break or resting. Fishing does inculcate a sense of helpfulness. Therefore, fishing is not only
a very fun activity but also has many benefits.
Attached are some photos of my fishing trip. One of the photos shows one of the big
snappers that I caught on that day. My parents, my brother and I were all smiles. We
enjoyed fishing together. We had a yummy curry fish for dinner that night.
Fishing Trip At Pasir Ris Fishing Pond
Class: 2P3
Research article review on growth and survival of larval Snakehead
(Channa striatus), fed different life feed organisms
Authors: Mehrajuddin War, Kareem Altaff, Mohammed Abdulkhader Haniffa
As the snakehead larvae grows, naturally, it will develop teeth and prefer
larger foods such as other snakeheads rather than tiny cladocerans. A mixed
cladoceran diet will reduce the chances of cannibalism while brine shrimp
larvae will increases the chances of snakehead survival. Fish fed with brine
shrimp larvae showed the greatest weight and height gain over the period
of one week. The results showed in this research article is most likely very
reliable as their procedure is completely standardized with the only variable
being the type of food. Even the slightest bit of disturbance of fish larvae or
cladoceran larvae was taken into consideration. Everything was transported
with ‘the least disturbance’, which proves the reliability of the source.
How has the research improved lives?
This research is linked directly to the farming of snakeheads for worldwide
consumption. Thus, it affects the productivity rate of all fish farms farming
snakeheads. If the feeding of brine shrimp larvae can reduce the rate of
cannibalism and increase the rate of survival of these fish, more fish can be
sold for consumption for less cost in rearing the fish. This will result in an
improvement in the aquacultural economy.
The experiment could be repeated thrice over four weeks instead of once over
four weeks. This will make the results much more reliable. Perhaps change
of the substance used to cultivate the food can be considered as certain
larvae may thrive in different conditions which will allow them to have different
nutritional values.
Source:
http://www.trjfas.org/pdf/issue_11_04/0405.pdf
3) I used lobster exoskeleton which I collected from my lobsters over the years to make some sort of a specimen case. I used thread to sew the blue lobster exoskeletons to a board. Each exoskeleton depicts the size of the lobster at different stages of growth. Here is the end product:
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