Browsing by Author "MOHD AZMI AMBAK"

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    A FIRST REPORT ON MUDLOBSTER (Thalassina anomala) AND ITS MOUND CHARACTERISTICS FROM SETIU WETLAND, TERENGGANU, MALAYSIA
    (Journal of Sustainability Science and Management, 2015) MARINA HASSAN; CHONG JU LIAN; MOHD IHWAN ZAKARIAH; MOHD AZMI AMBAK
    Mudlobsters, belonging to the genus Thalassina are lesser known but are important crustaceans of the mangrove ecosystem. Nine Thalassina species are found in the Indo-Asian region, namely Thalassina kelanang, Thalassina anomala, Thalassina australiensis, Thalassina gracilis, Thalassina krempf, Thalassina spinosa, Thalassina squamifera, Thalassina spinirostris and Thalassina saetichelis. Thalassina spp. were once common in the nipah palm areas around Kuala Terengganu until the areas were developed as residential and commercial areas. As such, this is the frst report about the mudlobster in Terengganu, with samples collected from Setiu closely resembling Thalassina anomala based on the morphological characteristics. The species is indigenous to Setiu Wetland area, and was recorded from an area which was previously a forest of Melaleuca plants and uninhibited by humans prior to development. The habitat was destroyed and make them move to the agricultural area near by the canal. They become a pest because destroying the apical shoots of the melon at night. In this study, the mudlobsters of Setiu Wetlands are reddish brown in color with total body length of ranging from 18cm to 20cm long. The Thalassina species can be distinguished by differences in morphology, namely the shape of carapace, rostrum and length of dorso-lateral carina.
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    FRESHWATER FISH DIVERSITY IN SUNGAl KELANTAN
    (Journal of Sustainability Science and Management, 2010) MOHD AZMI AMBAK; MOHAMMAD ZAIDI ZAKARIA
    An extensive survey on ichthyofauna was carried out at five tributaries of Sungai Kelantan in 2009 to determine whether turbidity has influence on the diversity of fishes. Fishes were collected using various fishing gears and secchi disc was used to measure water transparency or light-penetration level. Species Richness and Simpson index of diversity were used in the analysis to compare the species diversity. A total of779 fishes were collected comprising 36 species belonging to nine orders (Beloniformes, Channiformes, Cypriniformes, Mastacem.belliformes, Osteoglossiformes, Perciformes, Sygnathiformes, Symbranchiformes, and Siluriformes) and twelve families. The ichthyofauna were dominated by the cyprinids (19 species) and detrivores. The result shows that Sungai Pergau, upper part of the Sungai Kelantan system, having the least turbid water, were identified as having the most diverse fish community compared to the lower part ofthe Sungai Kelantan system. This study can be regarded as a significant contribution to the understanding of ichthyofauna of the Kelantan river.