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Overcrowding Model of Pufferfish Population in Malaysia<br />

Maisyarah Binti Mohamad<br />

Supervisor: Madam Siti Madhihah Binti Abd Malik<br />

Bachelor of Science (Financial Mathematics)<br />

School of Informatics and Applied Mathematics<br />

Malaysia has 1.8 million tonnes of freshwater fish with the value of RM18 billion.<br />

Nevertheless, there are fish that less caught by fisherman like pufferfish. The pufferfish<br />

species have no demand from the peninsula compared to Sabah and Sarawak due to<br />

toxic nature and not suitable for consumption. Normally, the pufferfish will be released<br />

back into the sea if caught by fishermen. Therefore, it can cause overcrowding. Thus,<br />

this study is to analyses the unbalanced population when overcrowding occurs. In this<br />

study, the logistics equation is used to construct a model of overcrowding pufferfish<br />

populations. The separation of variable method is used to solve the logistics equation.<br />

The results obtained show two critical point values, where the first critical point value is<br />

0 tons refers to the population of the pufferfish approaching extinction and the second<br />

critical point value is 10 tons referring to a sustainable value.<br />

818 | UMT UNDERGRADUATE RESEARCH DAY 2018

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