Distribution and Toxicity Assessment of Horseshoe Crabs, Tachypleus gigas and Carcinoscorpius rotundicauda at Pasir Putih Village, Kuching, Sarawak
The study focuses on the distribution and toxicity of horseshoe crabs, Tachypleus gigas and Carcinoscorpius rotundicauda in a beach off Pasir Putih Village. A total of 140 T. gigas and 24 C. rotundicauda were caught throughout the sampling period from August to December. Environmental factors suc...
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| Main Author: | |
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| Format: | Final Year Project Report / IMRAD |
| Language: | en |
| Published: |
Universiti Malaysia Sarawak, (UNIMAS)
2017
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/24585/1/Lim%20Kim%20Yong%20ft.pdf http://ir.unimas.my/id/eprint/24585/ |
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| Summary: | The study focuses on the distribution and toxicity of horseshoe crabs, Tachypleus gigas and
Carcinoscorpius rotundicauda in a beach off Pasir Putih Village. A total of 140 T. gigas and 24 C.
rotundicauda were caught throughout the sampling period from August to December. Environmental
factors such as physico-chemical parameters and sediment distribution were analysed to correlate with
the distribution of the two species which the sediment is dominated by silt and clay for seaward
transects. The carapace width, total length, telson length and body weight of the two species were
recorded for distribution studies. Out of the 75 female samples, 39 egg samples and 23 samples out of
all samples with soft tissue and eggs were assessed by using high performance liquid chromatography
(HPLC) for PSP and TTX respectively. The PSP content detected were ranging from 2246.94 -
132913.74 µg eq.STX/kg (n= 23) while the TTX content were found only in soft tissue of T. gigas
ranging from 0.56 - 126.40 MU/g (n = 6). The PSP content had exceeded the Malaysian regulatory
limit of 80µg eq.STX/kg while the soft tissue that contained 126.40 MU was considered moderately
toxic which is not suitable for human consumption. |
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