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Science, Marine and Environment

FRESHWATER SNAILS IN TASIK KENYIR, TERENGGANU

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Norhani binti Ahmad Rusli , Nursalwa binti Baharuddin *
Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030
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Kuala Nerus, Terengganu, Malaysia.
*Corresponding author: nursalwa@umt.edu.my

Tasik Kenyir is the largest man-made lake in South East Asia and four study area that was
selected in this research is Sungai Lawit, Sungai Cenana, Sungai Papan Lata Buaya. This
study was aimed to identify species diversity of freshwater snails based on their
morphological characteristics and to determined shell morphometrics of freshwater snails.
STUDENT RESEARCH DAY 2021 sampling. A total 404 of individuals representing 1 subclasses, 2 families, 2 species were STUDENT RESEARCH DAY 2021
Sampling was conducted during 7 September 2020 to 10
th
September 2020 by
th
postgraduate. There were one type of method used during sampling which was time- factor
v
collected and identified. Melanoides tuberculata (thiaridae) recorded the highest individuals
with 281 while Filopaludina sumatrensis (Viviparidae) has the lowest individuals with 123.
Melanoides tuberculata (Thiaridae) is the largest in term of shell length for Sungai Lawit,
Sungai Papan, Sungai Cenana and Lata Buaya with 3438.28mm, 1151.28mm, 515.49mm
and 567.43mm. For aperture length, Melanoides tuberculata (Thiaridae) also has the longest
value for Sungai Lawit, Sungai Papan, Sungai Cenana and Lata Buaya with 1274.54mm,
450.33mm, 212.21mm and 225.92mm. Shannon Diversity Index showed low level at all four
rivers which is Sungai Lawit= 0.68, Sungai Papan = 0.48, Sungai Cenana = 0 and Lata Buaya
= 0.66. This is due to sampling effort was not enough to do sampling and cover all the species
at all river. It is recommended that sampling periods to be longer or extended because more
species will be found and it also would be useful reference for the next generation, scientist
and community members that work for those sampling area.

Keyword: Freshwater snails, species diversity, shell morphometrics, freshwater snails,
diversity index.

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