Mazlan A.G.

Mazlan A.G.
Universiti Malaysia Terengganu | umt · Institute of Oceanography and Environment - INOS

Ph.D (Fish and Fisheries) Univ. of Wales

About

222
Publications
106,443
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,182
Citations
Additional affiliations
April 2017 - April 2022
Universiti Malaysia Terengganu
Position
  • Professor
June 2014 - present
Universiti Malaysia Terengganu
Position
  • Head of Faculty
Description
  • Have been Seconded from UKM til 2018
August 2009 - November 2012
Faculty of Science and Technology National University of Malaysia
Position
  • Deputy Dean

Publications

Publications (222)
Article
Full-text available
Background Climate is one of the most important driving factors of future changes in terrestrial, coastal, and marine ecosystems. Any changes in these environments can significantly influence physiological and behavioural responses in aquatic animals, such as crustacea. Crustacea play an integral role as subsistence predators, prey, or debris feede...
Article
Full-text available
Background The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) has estimated that invasive alien species (IAS) might cause billions of dollars of losses every year across the world. One example is South-East Asia, where IAS have caused an estimated loss of 33.5 billion USD, affecting the environment, human h...
Article
The copepod Oithona rigida can be used as a natural feed in rearing larvae of the mud crab Syclla olivacea. However, copepod is not readily obtainable due to their characteristics as seasonal zooplankton, causing limitation in using copepods. The objective of this study was to evaluate the nutrient transfer of enriched O. rigida in improving the gr...
Article
The jewel cichlid Hemichromis bimaculatus is a popular freshwater ornamental fish with high market demand. However, it is aggressive and difficult to be maintained in captivity. Background colours are known to influence fish aggression, but there is still no such information available on H. bimaculatus. This study was conducted to examine the influ...
Article
Full-text available
Climate change research on major aquatic species assists various stakeholders (e.g. policymakers, farmers, funders) in better managing its aquaculture activities and productivity for future food sustainability. However, there has been little research on the impact of climate change on aquatic production, particularly in terms of scientometric analy...
Article
Full-text available
Macrobrachium rosenbergii is one of the shellfish species with high aquaculture value due to its increasing market demand. However, the comparatively low production volume compared to demand coupled with the rapid decline of the natural environment, consequently, drives the potential depletion of the wild population. The decrease in water pH relate...
Article
Climate action was among one of the main targets for the United Nation Sustainable Development Goals (i.e. UN SDG: 13), which is to "take urgent action to combat climate change and its impacts". The United Nations Framework Convention on Climate Change (UNFCCC) is also concurred to improve climate change's mitigation and adaptation strategies along...
Article
In the aquaculture of fish and crustaceans, the indoor culture of M. macrocopa constitutes a requisite to produce a more effective feed for the larviculture of the cultured commercial species. The present study examined the efficiency of different diets on population density, survival, and productivity of M. macrocopa. The cladocerans [Cladocera: c...
Article
Full-text available
Marine biodiversity contains various unique life in the sea, from taxa to the ecosystem and provides valuable food sources and ecosystem services to humans and the environment. Climate change impacts towards marine biodiversity and ecosystem services have been done previously by various authors and countries. However, there is limited evidence on i...
Article
Full-text available
The Indian mackerel (Rastrelliger kanagurta) is one of the most commercially crucial epipelagic scombrid where it is caught in the Exclusive Economic Zone (EEZ) off the South China Sea (SCS). High demand for fisheries resources is a challenge for fishers to achieve optimal fish landing targets. By using R. kanagurta catch data, and high resolution...
Book
Full-text available
(https://www.google.com/amp/s/shopee.com.my/amp/Marine-Fishes-of-Kuantan-Malaysia-Biodiversity-Information-System-(MYBIS)-i.269510236.15435422162) This field guide entitled Marine Fishes of Kuantan: Malaysia Biodiversity Information System (MyBIS) has been written specifically to highlight the astonishing variety of marine fishes found at our nat...
Article
Full-text available
The present study was carried out to analyse the effect of water temperature on two components: (1) growth performance, and (2) gastric emptying time (GET) of African catfish Clarias gariepinus fingerlings. After 70 days, it was observed that experimental temperatures had no significant effects on the growth performance parameters, except for food...
Article
Full-text available
Climate change is expected to warm up the ocean surface where majority of life inhabits. Ocean warming influences vertical mixing and stratification patterns, which alter nutrient cycle, plankton production, and aquatic food web. Plankton serves as the first food source for all larval organisms and the base of aquatic ecosystem. Zooplankton communi...
Preprint
Full-text available
This study was conducted to investigate the energy mobilization and ionoregulation pattern of tilapia living recirculating aquaculture system (RAS) and cage culture environments. Three different groups of tilapia were compared as tilapia cultured in RAS (Group I - RAS), tilapia cultured in open water cage (Group II - Cage) and tilapia transferred f...
Article
Aim: Although the underlying biotic and abiotic factors of phylogeographic patterns is an important topic in biogeography, they remain largely unexplored in marine fishes. We empirically investigated the effects of several biological traits on phylogeographic patterns of selected marine fishes. We predict that overall similarity in these traits cor...
Article
Full-text available
Benthic species, though ecologically important, are vulnerable to genetic loss and population size reduction due to impacts from fishing trawls. An assessment of genetic diversity and population structure is therefore needed to assist in a resource management program. To address this issue, the two-spined yellowtail stargazer (Uranoscopus cognatus)...
Article
Full-text available
Aim: This study explores the influence of temperature and diet on pepsin enzyme activity in TGGG hybrid groupers. Methodology: Two hundred TGGG groupers (body weight 200±10 g; total length 22.5±1 cm) were equally distributed in three rearing tanks (1500 l capacity). After three weeks of acclimatization, the groupers were kept in 40 tanks (5 fish pe...
Article
Full-text available
With the ongoing climate change affecting the ocean, there is a need to understand and predict the future distributions of marine species in order to assess the sustainability of marine ecosystem. In this study, remotely-sensed satellite oceanographic data together with Indian mackerel (Rastrelliger kanagurta) fishery dataset were used to predict p...
Article
Full-text available
Salinity is a known factor in shaping population dynamics and community structure through direct and indirect effects on aquatic ecosystems. Salinity changes further influence food webs through competition and predation. The responses of Moina macrocopa (Cladocera) collected from Setiu Wetland lagoon (Terengganu) was evaluated through manipulative...
Article
Full-text available
Elevated ocean water temperature influences the physiological properties of fishes. This study is expected to characterize the oxygen consumption rate (OCR) and gill morphology in different temperature in hybrid grouper, tiger grouper × giant grouper (TGGGH). TGGGH specimens were distributed into four temperature groups starting from 22, 26, 30 and...
Article
Climate warming and low pH environment are known to negatively impact all levels of aquatic organism from cellular to organism and population levels. For ammonotelic freshwater species, any abiotic factor fluctuation will cause disturbance to the fish, specifically at the gills which act as a multifunctional organ to support all biological processe...
Book
Full-text available
In this field guide, we provide information on 203 fish species collected by hand nets and angling from coastal waters of Bidong Island at depths of mainly less than 30 m. This is the first field guide to coral and rocky reef shore fishes on the basis of voucher specimens in Malaysian waters. Of the 203, six species, Pseudochromis coccinicauda (Tic...
Article
The fish assemblage patterns are partially dependent on the environmental or anthropogenic changes which always affect the community. The objective of this study was to determine the spatial and temporal distribution pattern of fish assemblages due to physical-chemical in Setiu Wetlands. Fish samples were collected from June 2011 to July 2012 at th...
Preprint
Full-text available
The fish assemblage patterns are partially dependent on the environmental or anthropogenic changes which always affect the community. The objective of this study was to determine the spatial and temporal distribution pattern of fish assemblages due to physical-chemical in Setiu Wetlands. Fish samples were collected from June 2011 to July 2012 at th...
Article
Rising of temperature in conjunction with acidification due to the anthropogenic climates has tremendously affected all aquatic life. Small changes in the surrounding environment could lead to physiological constraint in the individual. Therefore, this study was designed to investigate the effects of warm water temperature (32 oC) and low pH (pH 6)...
Article
Full-text available
Here, we report the discovery of the exclusive predation of sea turtle hatchlings by several juvenile blacktip reef sharks (Carcharhinus melanopterus) in Chagar Hutang bay on Redang Island, Malaysia, in the South China Sea. Three dead specimens of C. melanopterus were retrieved from ghost nets, and the entire digestive tracts of these sharks solely...
Article
Full-text available
The population genetic diversity and demographic history of the longtail tuna Thunnus tonggol in Malaysian waters was investigated using mitochondrial DNA D-loop and NADH dehydrogenase subunit 5 (ND5). A total of 203 (D-loop) and 208 (ND5) individuals of T. tonggol were sampled from 11 localities around the Malaysian coastal waters. Low genetic dif...
Article
Full-text available
Present study provides a first characterization of the complete mitochondrial DNA (mtDNA) genome of the Pearse’s mudskipper Periophthalmus novemradiatus and describes its population genetics based on mtDNA cytochrome c oxidase subunit 1 (co1) gene. The whole mitogenome of P. novemradiatus is the fourth representative for its genus that consists of...
Article
Temperature- and prey-specific gastrointestinal evacuation times and gastrointestinal emptying rates were estimated for Lutjanus malabaricus under laboratory condition by using X-radiography and serial slaughtering techniques. Fish were collected from Pulau Ketam, Selangor, Peninsular Malaysia and subjected to four different experimental temperatur...
Article
Full-text available
The oxygen consumption and wellbeing of hybrid grouper Epinephelus fuscoguttatus × E. lanceolatus (TG × GG) juveniles were evaluated after 60 days of being exposed to different salinities (10, 15, 20, 25, and 30 psu) in triplicate (20 fish / tank; 55.0 ± 1.0 g body weight; 12.0 ± 0.5 cm total length). The fish were fed daily with commercial pellet...
Article
Full-text available
This study is conducted to examine the impacts of different rearing temperature and diet variation on haematological and serum biochemical parameters on the juvenile Lutjanus malabaricus, a commercially important fish species in Malaysia. Fish (16-18 cm) were divided into eight treatments (4 temperatures × 2 diets) each with three replicates of fiv...
Article
Full-text available
Length-weight relationship (LWR), condition factors, and trophic level of Zenarchopterus buffonis from the coastal waters of Malaysia were evaluated between November 2013 and March 2014. Three hundred individuals of Z. buffonis ranging between 8.7−16.0 cm total length and 3.67−22.19 g body weight were investigated in this study. The length-weight r...
Article
Full-text available
A specimen (125.5 mm in standard length) of bridled jawfish, Opistognathus nigromarginatus Rüppell, 1830 was collected from the Pulau Bidong, Terengganu, Malaysia using research trawler. Opistognathus nigromarginatus previously has been recorded from Southern Africa to the Persian Gulf, India, Thailand, and Vietnam. We document the first record of...
Chapter
Full-text available
The sampling programme was conducted to determine the diversity and abundance in fish assemblages from June 2011 to July 2012 using gill and trawl nets and traps. A total of 13,132 individuals of fishes comprising 116 species and 50 families were recorded. Family Siganidae had the highest family abundance recorded with 43.0%. Siganus javus was dete...
Chapter
Full-text available
The vertebrate diversity at the foot of Gunung Tebu Forest Reserve (GTFR) is not well documented therefore a study was conducted at lowland dipterocarp forest of Gunung Tebu Forest Reserve, Terengganu from 7th to 13th August 2016 and 27th August 2016 to 2nd September 2016 to record and construct a checklist of vertebrates from selected taxonomic gr...
Conference Paper
Full-text available
A pictorial taxonomy key among three genera and six species (Chelon subviridis, Chelon macrolepis, Chelon melinoptera, Valamugil buchanani, Valamugil sp. and Mugil cephalus) of the Mugilidae family living in the Setiu Wetlands were built to the species level using morphometric measurements and meristic counts. The results for different meristic and...
Article
This study tested the oxygen consumption rates (OCR), energy, and thermal coefficient of juvenile Lutjanus malabaricus (60 fish, size: 4.53 ± 1.14 g) at four temperatures of 22, 26, 30 and 34 °C. During 30 days of experimental period 5 fish tank-1 were reared at four temperatures with three replicates in intermittent flow respirometers in a recircu...
Preprint
Salinity is a known factor which shapes population dynamics and community structure through direct and indirect effects towards aquatic ecosystems. The responses of Moina macrocopa (Cladocera) collected from Setiu Wetland lagoon (Terengganu) were evaluated through manipulative laboratory experiments to understand the ability of M. macrocopa to tole...
Article
Full-text available
In this study we analyzed the effects of water temperature and diet on the growth properties and gastric emptying period of juvenile Malabar blood snapper (Lutjanus malabaricus) over a 30 day experimental period. Fish were collected from a local hatchery of Pulau Ketam, Selangor, Malaysia and immediately transferred to flow-through sea water system...
Article
Full-text available
Genetic variation and differences in wild Pearse’s mudskipper Periophthalmus novemradiatus populations from Setiu Wetlands in East Peninsular Malaysia were analysed using the partial mitochondrial DNA ND5 gene sequences. Among the 91 individuals sampled from six different localities, 35 novel putative haplotypes of P. novemradiatus were detected. 7...
Article
Full-text available
This study investigates the infestations and prevalence of apicomplexa-like parasites in marine gastropods from Merambong seagrass bed in Johor Straits, Malaysia. The gastropods were collected during spring low tides, when the seagrass bed exposed. Result showed that the digestive gland and digestive duct were the most infected organs, and no paras...
Article
Full-text available
This study aims to elucidate the gastric emptying process of clownfish fed on artificial diet using two gastric evacuation models and to determine the pepsin activity in the digestion process in relation to feeding time. Regression analysis was used to evaluate the adequacy of 2 models; Anderson’s [S t = S o (1-S o(α-1) ρ(1-α)t) 1/(1-α) + ξ ] and G...
Article
DNA Barcoding, primarily focusing on cytochrome c oxidase subunit I (COI) gene has been appraised as an effective tool for species identification. Nonetheless, species identification based on molecular approach is essential for discrimination of look-alike species. In this study, we focused on the marine fishes Family Nemipteridae, one of the comme...
Article
Full-text available
An investigation on morphometric and meristic variation of Zenarchopterus buffonis (Valenciennes, 1847) from coastal waters of Malaysia has been conducted between April 2011 and May 2013. A total of 300 fish specimens was collected from five different areas, viz. Tg. Belungkor, Johor; Sg. Likas, Sabah; Klang, Selangor; Matang, Perak and Langkawi, K...
Article
The dog conch, Laevistrombus canarium (Linnaeus, 1758) is one of the economically important marine molluscs that have high market value, particularly in the Southeast Asian region. This study investigates food consumption and assimilation by the juvenile conch at different temperature regimes (22, 26, 30 and 34°C). Live samples of the juvenile conc...
Article
Full-text available
In order to determine the favourable oceanographic conditions which influence fish aggregation areas, the integration of remote sensing and GIS technique was applied. This paper aims to classify the spatial distribution and abundance of R. kanagurta in the South China Seas (SCS) using principal component analysis (PCA) and cluster analysis (CA). Re...
Book
Full-text available
Buku Ikan Kekek di Semenanjung Malaysia ini mengandungi pelbagai maklumat khas, khususnya kepelbagaian spesies, keunikan anatomi sistem organ pendarcahaya, biologi dan ekologi ikan kekek. Selain itu, kekunci bergambar pengecaman spesies ikan kekek juga diperincikan oleh penulis supaya memudahkan pembaca mengenal pasti jenis ikan kekek semasa di pas...
Article
Full-text available
Population growth (length-weight relationship), and reproductive potential (e.g. fecundity, and sex-ratio) of five important fish species ('mola': Amblypharyngodon mola, 'puti': Puntius sophore, 'tengra': Mystus vittatus, 'shing': Heteropneustes fossilis and 'taki': Channa punctatus) collected from two important fresh water bodies (namely Hilna bee...
Article
Full-text available
The effects of salinity on the gastric emptying time (GET) and absorption of nutrient along the alimentary tract of tiger grouper (TG) × giant grouper (GG) (Epinephelus fuscoguttatus × E. lanceolatus) hybrid were studied. Juveniles TG×GG hybrid grouper (10.0 ± 0.5 cm total length; 50.5 ± 2.0 g) were reared in different salinities (10, 15, 20, 25 an...