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• W3209407035 abstract "Puntoplites bulu is a freshwater Cyprinidae and widely distributed in SoutheastAsia. It has attracted considerable interest due to high demand and price.However, an apparent decline in its distribution and abundance is observedand this is due to several factors, such as habitat degradation, pollution andoverfishing. Little is known about the biology and population structure of thisvaluable freshwater species. Therefore, this study was to investigate itspopulation morphological difference, genetic diversity, reproductive biologyand feeding guild of P. bulu in Peninsular Malaysia.Meristic, morphometric characters and truss network analysis were used indiscriminant analyses to study the intraspecific variation of wild P. bulu stockfrom three major rivers (Perak River, Pahang River and Kelantan River) inPeninsular Malaysia. Morphometric characters variations were apparent withsamples from Perak River and were found to have longer pre-occipital length,pre-operculum length and caudal peduncle length, while samples fromKelantan River were found to have longer length from pelvic fin base to analfin base. Further, based on truss network analysis, differences were observedmainly on head and caudal region with samples from Perak River populationhad smaller head and longer caudal area.Intraspecific variation of P. bulu from the three major rivers was alsodetermined based on genetic divergence by using mitochondrial DNA(mtDNA). Two distinct genetic lineages were apparent viz Central West andEast Peninsular Malaysia with natural barriers (the Titiwangsa Range) actedas natural dividers between these two lineages. Alternatively, the close geneticrelation and haplotype sharing that were observed between Perak and Kelantan populations could be due to human translocations. Further,haplotype sharing between Kelantan and Pahang populations revealed themigration ability of P. bulu through ancient connectivity.Food items of P. bulu from Perak River revealed a planktivorous feedinghabits. They consumed more plant matter based food item withBacillariophyceae as the major diet item based on a simple resultant index of29.9%, Crustacea (21.26%), Chlorophyceae (10.6%), detritus (14.88%),Mollusca (12.65 %) plant matter (9.92%), and worms (0.8 %). High foodoverlap was observed between adult and juvenile stages, althoughontogenetic dietary changes were observed between these two stages withadults consuming a larger prey size while juveniles feed primarily on smalleritems.Some aspects of reproductive biology of P. bulu were determined from thePerak River. Asynchronous ovarian development patterns were observed andspawning season happened in October and May, coincided with rainfallperiod. The sex ratio of P. bulu during the study period was 1:1.14, though thefemales predominated in almost every month. Mature size for females andmales was in the range of 25-30 cm and 20-25 cm, respectively. Absolutefecundity ranged from 1,631 to 31,059 per ovary and it was highly related toovary weight and gonadosomatic index (GSI) rather than body weight and totallength.In conclusion, morphological divergence and two distinct genetic lineages ofP. bulu were observed between the three major rivers in Peninsular Malaysia.They are planktivorous and had an asynchronous ovary development patternwith spawning season coincided with rainfall. Information from this studyuseful to facilitate the management of this valuable species." @default.
• W3209407035 created "2021-11-08" @default.
• W3209407035 creator A5014758053 @default.
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• W3209407035 date "2019-08-01" @default.
• W3209407035 modified "2023-09-27" @default.
• W3209407035 title "Phenotype and genotype characterization, feeding habit and reproductive biology of crossbanded barb, Puntioplites bulu (Bleeker, 1851) from Peninsular Malaysia" @default.
• W3209407035 hasPublicationYear "2019" @default.
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