Jurnal Iktiologi Indonesia
ISSN / EISSN : 1693-0339 / 2579-8634
Published by: Masyarakat Iktiologi Indonesia (10.32491)
Total articles ≅ 121
Latest articles in this journal
Jurnal Iktiologi Indonesia, Volume 21, pp 75-87; https://doi.org/10.32491/jii.v21i2.572
DNA barcode as an effective tool for identification and reveal phylogenetic relationships in fish. The purpose of this study was to analysis DNA sequence, genetic distance and reveal phylogenetic relationships of stress resistance fish (blackfish) in Harapan Rainforest Jambi base on DNA barcode. The research was conducted from April to August 2016 in Harapan Rainforest Jambi, Integrated Laboratory, Jambi University and Biotechnology Laboratory of the Primate Study Centre-IPB University. DNA extraction was done on five blackfish species from Harapan Rainforest Jambi, namely Nandus nebulosus, Pristolepis grootii, Trichopodus leerii, Channa striata and Channa micropeltes. As a comparison, we used stress intolerance fish (whitefish) from Harapan Rainforest Jambi, i.e., Balantiocheilos melanopterus and Hemibagrus nemurus from the gene-bank NCBI with acession number KT001040,1. DNA Extraction was performed according to Quick-Star Tissue Protocol from Qiagen. COI gene amplification with modification at denaturation and anneling temperatures. Visualization DNA band using a horizontal electrophoresis machine from Bio Rad. Sequencing DNA send to 1st Base Malaysia. DNA sequence used Biodit and MEGA X software. The alignment of the DNA bands in MEGA X produces DNA sequence along 588 bp, where 350 bp conserve and 238 bp variable sites. The composition of the base nucleotides were (T/U) =29%, C=28.6%, A=25%, and G=17.3%. The closest genetic distance was between Channa striata and Channa micropeltes (0.190) and the farthest was found on Nandus nebulosus and Hemibagrus nemurus (0.303). The phylogeny tree shows that the blackfishes are separated from whitefishes. The group of blackfish is divided into Channidae group (Channa striata, Channa micropeltes) and non-Channidae group (Nandus nebulosus, Trichopodus leerii, Pristolepis grootii).
Jurnal Iktiologi Indonesia, Volume 21, pp 131-149; https://doi.org/10.32491/jii.v21i2.575
A triplicate experiment was conducted to evaluate the effect of the diet supplemented with free glutamine (Gln) on intestinal structure and function, as well as the growth performance of African catfish Clarias gariepinus juvenile. The commercial feed was supplemented with Gln of either 0% (control), 0.7%, 1.4% or 2.1%. Fish measuring 2 ± 0.02 cm were stocked in 12 aquariums 50x40x35 cm filled with water at a volume of 50 L with a density of 2,000 fish m-2. Fish were cultured for 30 days and fed on the diets three times a day at satiation. Results showed that the growth rate and biomass of the fish at the end of the experiment had a quadratic response, with the maximum growth achieved at 0.7% Gln treatment. The response pattern of fish growth was in line with the distribution of fish length. Fish in 0.7% Gln treatment had number fish measuring 5-6 cm more than 12% less than other treatments, while fish measuring 7-8 cm were more than other treatments. Higher growth in the 0.7% Gln treatment correlated with longer villi, higher protein retention, and ultimately higher feed efficiency. Increased intake of Gln in the diet also caused an increase in intestinal protease enzyme activity, and accumulation of Gln in the liver, but did not increase the enzymes activity of the liver Superoxidase Dismutase (SOD). It can be concluded that feeding on a diet supplemented with 0.7% Gln can improve the structure and function of the intestine, as well as increase the target size of catfish juvenile production.
Jurnal Iktiologi Indonesia, Volume 21, pp 167-184; https://doi.org/10.32491/jii.v21i2.555
Eco-biological information of Cheilopogon abei in Geser Streit is unknown. The objective of this research is to observe the sex ratio, first size maturity, gonad maturity and gonado somatic index (GSI) with fecundity of flying fish Ch abei in Geser East Seram Strait waters. Sampling was done for ten months started from February to November 2018, using gill net measuring 1.50 inch. All fish samples were measured in fork length and weighted so dissected to make observations on the level of gonad maturity and the number of eggs in female fish. A total of 682 flying fish was found during the study with a fork length range of 182.6-243.3 mm and a weight of 73.98-115.45 g. The results of the analysis showed that the proportion of the number of male fish was less than that of the female fish for almost every month of observation. The first size gonad mature of male and female is 210.5 mm and 214.1 mm FL. The gonad maturity index of male fish ranges from 0,963-7,967 and female fish ranges 1,315-8,069, the total fecundity is 2321-9438 eggs. Gonads of ripe fish in each month of observation. The spawning peak of Ch abei takes place in June-July and it is hoped that no arrests will be made in both months, to ensure the sustainability of the stock.
Jurnal Iktiologi Indonesia, Volume 21, pp 185-197; https://doi.org/10.32491/jii.v21i2.577
Tamblingan Lake is a volcanic lake located in the caldera of Mount Lesung a rain-fed lake in a confined endorheic basin and there is no inflow or outflow. Nyalian is a type of fish from the Cyprinidae family that is quite common compared to other fish in its class in Tamblingan Lake. Information on the growth and distribution of these fish parameters in Tamblingan Lake does not exist. This study aims to analyze and explain the growth patterns of Barbodes binotatus, especially the length-weight relationship, condition factor, and their distribution in the waters of Tamblingan Lake. The research was conducted in Tamblingan Lake from January to June 2019 using a modify gill nets with the mesh size 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 in centimeter. The sampling done in five locations. The length-weight relationship analysis used the power regression. The fish sample found was 204 individuals during the study with a range of total length was 5.2 – 15.0 cm. The equation of length-weight relationship is W = 0.0051 L3.387. The value of b formed based on this equation is 3.387 with a positive allometric growth pattern.The condition factor values ranged from 0.587 to 1.246. Barbodes binotatus spread in the litoral area where there are many aquatic plants. This information of nyalian fish could use as the basis for fish resource management in Tamblingan Lake.
Jurnal Iktiologi Indonesia, Volume 21, pp 117-130; https://doi.org/10.32491/jii.v21i2.574
Tilapia strain of NIFI (Oreochromis sp.) and Srikandi (Oreochromis aureus x niloticus) are superior strain of tilapia that able to grow well in brackish water ponds. However, an increasing water salinity might have an impact on a series adaptation process on fish that leads to various morphological changes. This study aimed to analyze the growth and length-weight relationship of both tilapia strain in brackishwater pond with salinity of 25-30 ppt. Research was conducted in brackishwater pond in Losari, Brebes Regency. Fish were reared in 5x5x1 m3 hapas installed in the pond for four months. At the end of experiment period, body length and weight measurement were carried out for 26 males and 34 females of NIFI strain and 31 males and 28 females of Srikandi strain. The result showed that the highest growth rate was shown by Srikandi strain and the highest length was shown by NIFI. Positive allometric growth was found in the Srikandi females, while Srikandi males as well as NIFI tilapia males and females showed a negative allometric growth. Length-weight relationship on males and females of NIFI strain followed the formula of W = 0.0583L2,632 and W = 0.0452L2,665, respectively. Whereas, on males and females of Srikandi strain followed the formula of W = 0.0358L2,8545 and W = 0.0287L3,1580, respectively. There was a strong correlation between length and weight of fish from both strains with the R2 value ranged between 0.80 – 0.87. Condition factor of males and females of NIFI were 1.853 and 2.009, while Srikandi tilapia males and females were 2.308 and 2.665, respectively. Red NIFI and Srikandi tilapia are able to adapt in a high salinity level of brackish water pond.
Jurnal Iktiologi Indonesia, Volume 21, pp 105-115; https://doi.org/10.32491/jii.v21i2.538
Ecologically, weather changes cause local deviations from regional patterns in waters. So that there will be changes in fish types and food habits.The purpose of this study was to determine changes in fish community structure, food preferences, and area of niches for each type of fish in Pangelang Protected Lake. The research was conducted using a survey method in October 2016 (low tide), June 2018 (transition) and September (flood) 2018. The results obtained: 1. Fish communities in Lake Pangelang obtained a total of 12 families, 30 genera, and 37 species. In the low tide season, there are 21 species of fish caught, 17 species of transition season and 16 types of flood during low tide. 2. In the low tide season, the fish community in Pangelang Lake is dominated by detritivorous fish. In the transitional season, the fish community in Pangelang Lake experiences changes with an increase in the union of phytoplanktivore and insectivore fish. During the flood season, the fish communities in Lake Pangelang underwent a change again where the union of herbivores that used plants increased.
Jurnal Iktiologi Indonesia, Volume 21, pp 151-165; https://doi.org/10.32491/jii.v21i2.576
Bonylip barb (Osteochilus vittatus Valenciennes, 1842) is a native fish of Indonesia's inland waters which has become a cultivated fish commodity. However, production tends to decrease due to high feed costs. The alternative feed types need to be found to anticipate the problem. Lemna perpusilla Torr is one of macrophytes plant which potentially used as an alternative feed due to high protein content. This study aims to evaluate the growth performance of fish fed with a combination of Lemna and commercial feed. As much of each 14 fishes were rearing in a 45x45x40 cm3 aquarium and fed for 84 days or 12 weeks. There are 5 combinations of feed, i.e feed A (100% commercial feed), B (75% commercial feed + 25% Lemna), C (50% commercial feed + 50% Lemna), D (25% commercial feed + 75% Lemna), and E (100% Lemna). The fishes were fed by commercial feed as much as 3% of the total fish, while administering Lemna at 30% of body weight. Growth performances were measured i.e standard and total length, absolute growth, specific growth rate and survival rate. The results showed that fish was able to growth using combination of commercial feed and Lemna. Data analysis was conducted descriptively that showed that fish fed by feed C (50% commercial feed + 50% Lemna) produced the highest length and weight, absolute growth and specific growth rate compared to other treatments. The highest survival rate was at fish fed by feed E (100% Lemna). The use of Lemna as an alternative feed is expected to reduce dependence on commercial feed.
Jurnal Iktiologi Indonesia, Volume 21, pp 89-104; https://doi.org/10.32491/jii.v21i2.573
Efforts to improve the production performance of clown loach in recirculate aquaculture system can be done by increasing stocking density and water discharge. This study aimed to analyze the effect of increasing stocking density and water discharge on production performance, stress response and water quality in order to obtain the best stocking density and water discharge to obtain maximum profit in a short time. A factorial completely randomized design with two factors, i.e. the stocking density of 1, 2, and 3 fish L-1 and the water discharge of 0,05; 0,10; 0,15 L s-1 was performed. The volume of water used in each aquarium was 48 L and using a ½ inch faucet stop to regulate the water discharge from the inlet pipe. Clown fish fed Tubifex sp. with a feeding frequency of two times a day according to the treatment for 60 days. The result indicates that there was no interaction between the two factors on production performance, payback period, and R/C ratio. Stocking density has a significant effect on specific growth rate, absolute growth rate of individual weight, feeding consumption rate and R/C ratio of clown loach. Stocking density and water discharge had an interaction on the visual color of pectoral and caudal fins of clown loach. Different stocking densities with the combination of water discharge in this study resulted that the water quality were within tolerable range for clown loach so that they did not experience stress, as well as high production and business performance. It is recommended to intensify clown loach with a stocking density of 3 fish L-1 and 0,15 L s-1‑ of water discharge.
Jurnal Iktiologi Indonesia, Volume 21, pp 61-73; https://doi.org/10.32491/jii.v21i1.552
Channa striata or striped snakehead is one of species from family Channidae that widely distributed from India, Southern China to Southeast Asia including Indonesia. It is a commercially important freshwater fish because of its taste and health benefits. High demand of this species trigger many efforts to increase its production, one of them is genetic monitoring. This study used complete Cytochrome b gene sequence of mtDNA for determining genetic variation in wild population of C. striata. C. striata samples (n=31) from two different locations in Indonesia were amplified and analyzed using MEGA ver 7.0. Sequences of 1140 bp complete cyt b gene revealed the presence of 2 haplotypes with 1137 bp conserved sites and 3 bp variable sites (0,26%). Overlapping haplotype was observed in samples from Bekasi, however there were only one haplotype in samples from South Borneo. Interspecies genetic were analysed with species from Genebank and showed that C. striata from Indonesia has close genetic relationships with C. striata from Borneo-Indonesia (MN057164.1) with genetic distance 0%. This study also revealed that C. striata from Indonesia were phylogenetically distinct with C. striata from China with 9,2%K2P genetic distance. Complete cyt b gene has been proven for assessing phylogenetic relationships and population diversity of C. striata in Indonesia.
Jurnal Iktiologi Indonesia, Volume 21, pp 23-38; https://doi.org/10.32491/jii.v21i1.549
Red tilapia is a one of the economically important fish species. In order to increase growth and feed efficiency, feed restriction strategies can be carried out. This study aims to determine the effect of periodic (weekly) restriction of feed on compensatory growth and physiological responses of red tilapia during the enlargement phase. The activity was carried out at the Fish Breeding Research Center for 4 months. The research method used a completely randomized design (CRD) 4 treatments with 3 replications, namely control (fish were fed daily), 1 (1 fasting day a week), 2 (2 fasting days a week), and 3 (3 fasting days a week). Fish rearing was conducted on the concrete tub measuring 2 x 1 x 0.8 m3 with a stocking density of 10 fish m-2. During the maintenance period of 120 days the fish were fed satiation twice a day. The results showed significant differences (P 0.05), which was at normal values. Restriction of feed to 1 day a week showed partial compensatory growth with better feed efficiency than fish fed daily.