Institut Akuakultur Tropika

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Age And Growth Estimation Using Growth Band Counts Of Orange Mud Crab, Scylla Olivacea (Herbst, 1796) From Setiu Wetlands, Peninsular Malaysia
(Universiti Malaysia Terengganu, 2018-05) Nurul Hasyima Binti Ismail
Orange mud crab, Scylla olivacea (Herbst, 1796) is an important fishery products in Malaysia. Age study is important to generate the information on growth, recruitment, longevity, mortality for mud crab stock assessment. The aim of this study is to investigate the Growth Band Counts (GBC) deposited in thin sections of gastric mill of S. olivacea as age indicator for this species. A total of 90 wild caught S. olivacea were sampled from Setiu Wetlands, Peninsular Malaysia (February – October 2016) and 25 individuals of S. olivacea were reared in the hatchery of Institute of Tropical Aquaculture, Universiti Malaysia Terengganu for one year (March 2016 - March 2017). The periodicity of GBC in gastric mill of S. olivacea was validated using reared of known age samples. The results revealed that the presence of one GBC in reared S. olivacea were parallel to the age one year old of S. olivacea absolute age. One to three GBC were present in wild caught S. olivacea which indicated the age of one to three years old, respectively. There was a significantly positive relationship between Carapace Width (CW) and age, as the number of growth bands increased with putative age. The accuracy of bands counting was assessed by lower coefficient of variation values of reared and wild caught S. olivacea with 6.00 – 6.23% and 8.52 – 8.40%, respectively. Using the von Bertalanffy Growth Model equation, the growth parameters of S. olivacea was estimated and growth curves was fitted to CW at age data. The growth parameters such as asymptotic CW (CW∞), growth coefficient (K year -1 ) and initial condition parameter (t0) of the known age S. olivacea were narrower at 20.07 cm, 0.31 year -1 and - 0.20 than the wild samples at 28.01 cm, 0.36 year -1 and - 0.73 for female and at 29.34 cm, 0.38 year -1 and - 0.79 for male, respectively. The age composition suggested that S. olivacea population found in the Setiu Wetlands, Peninsular Malaysia has at least reached the age of 2 years old. The findings obtained from this study would substantially improve the direct age - based assessment for biological and ecological studies of mud crabs.
Antibacterial properties of seaweed and oyster extracts and their effects on pathogenic bacteria tolerance, immune status, growth and proximate composition in feeding trials of the red tilapia, Oreochromis sp. juveniles
(Terengganu: Universiti Malaysia Terengganu, 2013-02) Mastoi, Ali Muhammad
Consistent expansion of aquaculture practices has led in generating increased interest to understand various fish diseases and their control measures. The occurrence of diseases in aquaculture fish farm is primarily due to several factors related to rearing methods and deteriorating environmental conditions. Infectious diseases are also a major problem in cage grown fishes causing heavy loss to the fish farmers. The most effective methods of controlling diseases in aquaculture practices are through strengthening the defense mechanisms of the fish by prophylactic administration of effective immune-stimulants.
Application of the fish associated selected microbes in fish feed useful in enhancing the growth performance of the juvenile tropical Malaysian brown marbled grouper, epinephelus fuscoguttatus
(Institut Akuakultur Tropika, 2010-06) Sukumaran, Mithun
Brown marbled grouper (BMG)- Epinephelus fuscoguttatus is one of the most important species among the cultured groupers in Malaysia, Indonesia and Thailand.
Assessment Of Melaleuca Cajuputi (Powell) Methanolic Leaves Extract Enriched Diet On The Growth Performance And Blood Parameter Of Macrobrachium Rosenbergii (De Man, 1879)
(Universiti Malaysia Terengganu, 2018) Mohamad Badrul Bin Mohamad Khairul Sahimi
Melaleuca cajuputi leaves possessed various medicinal properties which make it a potentially valuable natural feed additive to the aquaculture industry. Four diets containing different dosages of M. cajuputi leaves extracts; 0g/kg (C), 5g/kg (T1), 10g/kg (T2) and 15g/kg (T3) were added to the diet to investigate the effects of the respective treatments on the growth performance and blood parameter of Macrobrachium rosenbergii (mean weight of 3.17±0.46g). After the 45 days of feeding, prawns fed the diet containing 15g/kg of M. cajuputi leaves extracts significantly enhanced growth performance, which showed that weight gain (WG) and specific growth rate (SGR) was the highest amongst all treatments (P<0.05). Blood parameters (total hemocyte count (THC), differential hemocyte count (DHC), plasma glucose level, protein concentration and resistance against Aeromonas hydrophila) were examined 60 days post-feeding period. The results showed that prawns fed with the highest dosage of M. cajuputi (15g/kg) enriched diet showed an increment of THC and DHC significantly at (p<0.05) compared to the control group.
Bacterial-microalgae interaction on growth and the production of lipid and fatty acid in biofloc-based shrimp aquaculture
(Universiti Malaysia Terengganu, 2021-12) Chin Sze Yee
Behavioural and physiological changes of blue swimming crab, Portunus pelagicus at different culture temperatures
(Universiti Malaysia Terengganu, 2018) Mohamad Nor Azra Bin Md Adib
BIODEGRADABILITY OF MICROPLASTICS BY BIOFLOC-PRODUCING BACTERIA DURING LARVAL REARING OF MUD CRAB, GENUS Scylla
(Universiti Malaysia Terengganu, 2024-07) MD. SHAHADAT HOSSAIN
BIODEGRADATION OF MICROPLASTICS BY BIOFLOCCULANT- PRODUCING BACTERIA ISOLATED FROM BIOFLOC BASED SYSTEM
(Universiti Malaysia Terengganu, 2024-08) ZUHAYRA NASRIN BINTI AHMAD SHUKRI
BIOPROSPECTING OF CHITOSAN FROM CRAB SHELLS AS A NATURAL COAGULANT FOR WATER TREATMENT
(Universiti Malaysia Terengganu, 2023-11) FACHRUL WAHAB
Breeding performance and traits inheritance of hybrid catfish, Clarias macrocephalus and Clarias gariepinus
(Institut Akuakultur Tropika, 2008-09) Pham, Thanh Liem
Interspecific hybridization between Clarias macrocephalus (CM) and Clarias gariepinus (CG) has been conducted to produce hybrid with specific desirable traits. To evaluate its potential application in aquaculture, fertility and performance of desirable traits (e.g. growth, external morphology, flesh quality, disease resistance) were examined on reciprocal Fi and backcross hybrids. Reciprocal hybrids were partially fertile with various abnormalities in gonad development that resulted in low gamete production. Abnormalities observed in gonad development of all hybrid genotypes included a single ovary or testis, tumor-like and adipose-like tissues in ovaries, ovotestis, and retarded gonad. Reciprocal hybrid males had problems with spermatogenesis that was likely due to genetic incompatibility since treatment with hormones did not improve spermatogenesis.
Changes of myofibrilliar protein and texture in black tiger shrimp (Penaeus monodon) during ice storage
(Institut Akuakultur Tropika, 2010-10) Abdul Al-Hafiz Ismail
Research to address the concern for post-harvest quality losses in fisheries have not been done in-depth especially for our local seafood products. These losses will occur due to increasing ambient temperature and stagnation of transfer after being harvest. Quality deterioration will affect the consumer or market acceptences thus decrease the demand on the product. In this study, black tiger shrimp {Penaeus monodon) was obtained from a local supplier in Marang, Terengganu, killed and stored in an insulated box at 0°C for 9 days. For every storage period, the shrimp was processed prior to SDS-PAGE analysis and texture analysis.
CHARACTERISATION OF THE Y-ORGAN IN THE ORANGE MUD CRAB, Scylla olivacea
(Universiti Malaysia Terengganu, 2024-03) MUHAMMAD ACHDIAT
Characterization of bioflocculant-producing bacteria isolated from bioflocs of shrimp pond
(Universiti Malaysia Terengganu, 2017-04) Nurul Fakriah Che Hashim
Characterization of bioflocculant-producing bacteria isolated from bioflocs was prompted to explore marine bacteria that enhanced bioflocculation process in aquaculture wastewater treatment. Certain bacteria were believed to secrete extracellular polymeric substances (EPS) which response to the physiological stress encountered in the natural environment that can act as bioflocculants. The objectives of this study were identification of bioflocculant-producing bacteria isolated from bioflocs, evaluation on their flocculating activity and characterization of protein composition in extracellular polymeric substances (EPS) produced by identified bioflocculant-producing bacteria. In this study, standard methods on phenotypic and genotypic identification of bacteria including biochemical test and molecular approaches were employed. Six species known as Halomonas venusta, Bacillus cereus, Bacillus subtilis, Bacillus pumilus, Nitratireductor aquimarinus and Pseudoalteromonas sp. were successfully identified as bioflocculant-producing bacteria. Their flocculating activities were examined using Jar Test. The highest flocculating activity was exhibited by Bacillus cereus with 93% while iv Halomonas venusta showed the lowest record with 59% of flocculating activity. Extracted EPS that acted as bioflocculants were obtained from culture supernatant by using cold ethanol precipitation method. Protein content determination using Bradford assay indicated all six species of bioflocculant-producing bacteria showed different protein concentration that ranged between 1.377 μg/mL to 1.455 μg/mL. On Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) gel, several protein bands with different molecular weight that ranged between 12 kDa to 100 kDa were observed
Characterization of microorganisms in biofloc formation of pacific white leg shrimp (Penaeus vannamei) in grow-out pond
(Terengganu: Universiti Malaysia Terengganu, 2016-05) Nurarina Ayuni Binti Ghazali
An environmental friendly technology known as Biofloc Techology (BFT) has been developed to reduce environmental damages and optimise production of aquaculture industry. In BFT, microbial communities in biofloc are responsible in eliminating water exchange and producing microbial proteins that can be used as supplementary feed for shrimp culture.
Characterization of PCR-RFLP profiles on partial co1 geneof harpacticoid copepod, Leptocaris canariensis (Lang, 1965), UMT strain
(Institut Akuakultur Tropika, 2010-10) Mohd Fazhan Mohd Hanafiah
Leptocaris canariensis (Lang, 1965) is a benthic copepod that belongs to Order Harpacticoida. It is essential in aquaculture sector due to smaller size and good nutritional content suitable for the growth and survival of the fish larvae. It is also an important prey for other copepod and predators to mosquito larvae. The identification of the copepod species was done based on morphological characteristic only which is time consuming and need to be done on adult copepod only. There is no molecular study being done on L. canariensis itself.
CHITOSAN FROM Litopenaeus vannamei SHRIMP SHELLS: A GREEN PRE-TREATMENT BIO-COAGULANT FOR AQUACULTURE WASTEWATER SOLID RECOVERY FOR BIO-FERTILIZER APPLICATION
(Universiti Malaysia Terengganu, 2024-01) CHE ENGKU NORAMALINA BINTI CHE ENGKU CHIK
The conservation-related biology and ecology of the leatherback turtle, dermochelys corilacea in Rantau Abang, Terengganu, Malaysia
(Kagoshima University, 1993) Chan, Eng Heng
This dissertation provides an analysis of the temporal and spatial trends exhibited in the Malaysian leatherback nesting population in Terengganu, addresses the most serious threats to the survival of the population, and through conservation-oriented research, formulates measures to counteract the declining trend observed in the population. Conservation measures which have been formulated and proposed have been translated into action by the appropriate federal and state agencies responsible for the conservation and management of sea turtles.
Crossbreeding of Pangasius hypophtalmus and Pangasius nasutus and digestive system development of the hybrid larvae
(Institut Akuakultur Tropika, 2008-04) Agus Putra, Abdul Samad
A study to determine the feasibility of producing hybrid of Pangasius spp through crossbreeding between Pangasius hypophthalmus and Pangasius nasutus were conducted from June to August 2007. The result of the crossbreeding between P. hypophthalmus female and P. nasutus male (HN) showed a good breeding performance, where the average fertilization, hatching and deformation rates were 81.17%, 83.06% and 8.51%, respectively. However, crossbreeding between P. nasutus female and P. hypophthalmus male (NH) resulted in low breeding performance with the average fertilization, hatching and deformation rates at 60.96%, 54.61% and 14.68%, respectively. For the control, P. hypophthalmus (HH), the average fertilization, hatching and deformation rates were 93.18%, 89.73% and 4.14%, respectively; and for P. nasutus (NN), the average fertilization, hatching and deformation rates were 76.83%, 68.26% and 7.16%, respectively. Larval rearing up to 6 weeks after hatching (6 wAH), showed that survival rate of HN was intermediate of both the parental species, with an average value of 73.33%, while, NH showed a lower survival rate with an average of 43.67%.
Crude B-1, 3- glucan binding protein profiling from rock oyster (Chama pacifica) and its hemagglutination properties
(Institut Akuakultur Tropika, 2010-11) Muhamad Hazwan Mat Tar
Crude B-Glucan binding protein profiling of hooded oyster (Saccostrea cucullata) and its functional assays
(Institut Akuakultur Tropika, 2010-11) Siti Nor Fatihah Zakaria
A crude (B-glucan binding protein was isolated from wild oyster, Saccostrea cucullata obtained at Pantai Pandak, Chendering, Terengganu. This protein is capable of enchancing the prophenoloxidase (proPO) system activation induced by laminarin which indirectly enchance the immune system.

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