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Movement of Released Horseshoe Crabs in Setiu Lagoon<br />

Jahirah binti Jam Sari<br />

Supervisor: Assoc. Prof Dr. Faridah Moahamad<br />

Bachelor of Applied Science<br />

(Biodiversity Conservation and Management)<br />

School of Marine and Environmental Sciences<br />

Universiti Malaysia Terengganu<br />

Two species of horseshoe crab which are Tachypleus gigas and Carcinoscorpius<br />

rotundicauda could be found in Peninsular Malaysia. However, the population has<br />

drastically declined due to human intervention. One way to recover their population is<br />

by relocating them to Setiu Lagoon. This experiment was aimed to determine the<br />

movement of horseshoe crab within three days after release. A total of 55 individuals<br />

of T. gigas and 161 of C. rotundicauda had been released in three samplings. The<br />

distance travelled was calculated based on capture at four locations where gill nets<br />

were installed prior to release. These nets were checked at 24, 36 and 72 hours.<br />

Within three days after release, the furthest distance for T. gigas and C.rotundicauda<br />

was confirmed at 1.27 km and 2 km respectively. This data is useful for the<br />

management of horseshoe crabs conservation project in the future, for example to<br />

decide better release points for a successful horseshoe crabs relocation.<br />

1693 | UMT UNDERGRADUATE RESEARCH DAY 2018

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