Jurnal Iktiologi Indonesia
ISSN / EISSN : 16930339 / 25798634
Current Publisher: Masyarakat Iktiologi Indonesia (10.32491)
Total articles ≅ 107
Latest articles in this journal
Jurnal Iktiologi Indonesia, Volume 20, pp 105-115; doi:10.32491/jii.v20i2.518
The objective of this research was to evaluate the supplementation of turmeric in the diet on antioxidant status and growth performance of African catfish (Clarias gariepinus) in zero water exchange condition. This study used a completely randomized design with 4 treatments and 4 replications. Each treatment consisted of feed supplementation turmeric at dosage of 0; 2.5; 5 or 7.5 g kg-1 diet. One hundred catfish juvenile (5.95±0.05 g) were stocked in intermediate bulk container (IBC) tank (1×1×1 m3) and rearing in zero water exchange condition for 60 days. Catfish were fed at satiation twice a day, in the morning and evening. The results showed that an increase in antioxidant content in catfish fed with the addition of turmeric, which simultaneously also reduced the percentage of liver damage. The parameters of liver damage can be seen from several parameters i.e. pale liver, droplet fat and fat content in the addition of turmeric treatment is lower than without the addition of turmeric. However, catfish fed with the addition of turmeric did not show significant results in terms of growth performances.
Jurnal Iktiologi Indonesia, Volume 20, pp 189-203; doi:10.32491/jii.v20i2.524
Pirik (Lagusia micracanthus Bleeker, 1860) is one of endemic fishes in Sulawesi. Morphometric and meristic information of Pirik population in various habitats are unknown. The present study aimed to determine the morphometric and meristic variation of Pirik in Maros and Wallanae Cenrana watersheds. Sampling collection was carried out monthly from May 2018 to April 2019 in the Maros watershed, namely Pattunuang River (M1), Bantimurung River (M2), Pucak River (M3); and in Wallanae Cenrana watershed particularly in Camba River (W1), Sanrego River (W2), and Ompo River (W3). Morphometric measurements consisted of 31 characters and meristic measurements consisted of 10 characters. Morphometric data was standardized by dividing all morphometric characters by standard length (SL). Analysis of variance (ANOVA) and discriminant analysis (Discriminant Function Analysis) were applied for data analysis. The results showed that the Pirik taken from rivers in the Maros and Wallanae Cenrana watershed are two different population groups. There are 12 distinguishing morphometric features for Pirik of the Maros and Wallanae Cenrana watershed, i.e. TL (total length), SL (standard length), BDdSA (body depth-dorsal fin origin), HL (head length), Jlup (upper-jaw length), PAfL (pre-anal fin length), ABL (Anal fin base length), PelRL (pelvic ray length), AFRL (anal fin ray length), CPL (caudal peduncle length), CLLup (upper caudal lobe length) and CLLmid (mid-caudal length). There is no significant difference of meristic characters of Pirik obtained from the Maros and Wallanae Cenraa watersheds.
Jurnal Iktiologi Indonesia, Volume 20, pp 117-132; doi:10.32491/jii.v20i2.519
Aquaculture is is often constrained by the availability of water, both in quality and quantity. The aim of this study was to determine the optimum maintenance system of elver (Anguilla bicolor bicolor) on a wet, moist and dry system through production performance studies and physiological responses. The research was conducted from August to September 2018 at the Production Technic and Management of Aquaculture Laboratory, Department of Aquaculture, IPB University. A completely randomized design with 5 treatments and 3 replications was used in this study, namely treatment with high water wet system 0% of body height (A), high water wet system 50% of body height (B), high water wet system 100% of body height (C), moist system (D), and dry system (E). The body weight of elver was 18.80 ± 0.62 g which derived from fish cultivator in Bogor, West Java. Fish was fed 3 times per day at satiation with commercial feed which a protein content of 50%. Results showed that treatment C was the best result with survival rate of 100%, the specific growth rate of 0.45% day -1, the absolute growth rate of 0.07 g day 1 and feed conversion ratio of 6.57. The analysis of variance showed that the treatments showed the significant effect (P
Jurnal Iktiologi Indonesia, Volume 20, pp 155-169; doi:10.32491/jii.v20i2.522
Supplemental enzyme in artificial diets with difference doses for African catfish Clarias gariepinus (initial weight of 0.0048±0.0001 g and total length 0.7633±0.0392 cm) were examined for 12 days feeding trial. The aim of this study was to analyze the effectiveness supplemental enzymes in diets for growth performance of catfish larvae. Tubifex sp. (control) and a multi enzyme was included at the level of 0.00 (ME0), 1.00 (ME1) and 2.00 g kg-1 (ME2 diet as a test diets. Each of the four experimental diets was randomly assigned to four plicate groups. Larva was allocated into 150 L aquaria at a density of 1350 larvae per aquarium. Data was analyzed using SPSS 20, followed by Duncan’s test. The result showed that the survival rate and condition factors were no statistical difference between experimental diets and control group. The highest final length, final weight, total food consumption, villi length and enzymes activity were recorded in the Control (P
Jurnal Iktiologi Indonesia, Volume 20, pp 133-141; doi:10.32491/jii.v20i2.520
Giant gourami has a high economic value, but slow growth. To overcome this problem, it is necessary to improve the quality of feed and the cultivation system. Feed used in this experiment was formulated feed with different ratio of combination of fish meal and azolla fermented flour. The cultivation system used in this study was a recirculation system. This study aimed to determine the effect of different ratio of matterials combination in feed on the growth performance of gouramy. This study used an experimental method with the completely randomized design with 5 treatments and 3 replicate. The treatments were the ratio of combination between fish meal and azolla fermented flour, viz: A (100:0%), B (75:25%), C (50:50%), D (25:75%) and E (0:100%). The body size of fish ranged of 7 – 9 cm with an average weight of 8.8 g ind.-1. The results showed that the provision of artificial feed with different combinations gave a significant effect (P
Jurnal Iktiologi Indonesia, Volume 20, pp 143-153; doi:10.32491/jii.v20i2.521
Striped catfish Pangasianodon hypophthalmus (Sauvage, 1878) has a high economic value and relatively fast growth, so that optimum stocking density and supplement of natural ingredients, such as Curcuma domestica Val., Kaempferia galanga Linn., and Curcuma xanthorriza Robx. can increase growth and immunity. This study aimed to obtain the optimum stocking density and herbal supplement dosage in feed to increase the growth and survival rates of striped catfish. An experimental method by applying factorial design was used, i.e. the dose and stocking density factors. The dosage of herbal supplements used were 100 mL kg-1 feed (D1), 200 mL kg-1 (D2) and 300 mL kg-1 (D3). Stocking density used was 50 m-3 (P1) and 75 m-3 (P2). The fish used were 8.5±0.5 cm long and weighed 7.5±0.3 g, kept in floating cages of 1 m x 1.5 m x 1 m. Fish maintenance was carried out for 60 days with feeding frequency of three times a day, as much as 10% of body weight. The results showed that the treatment of 200 mL kg-1 dosage and 75 m-3 stocking densities was the best treatment. This treatment showed that specific growth rate, absolute weight, absolute length and feed efficiency were 4.86%, 119.07 g, 15.45 cm, 82.93%, respectively. A supplement dose of 200 mL kg-1 in feed and stocking densities of 75 m-3 could increase growth rates, survival, and feed utilization efficiency of striped catfish.
Jurnal Iktiologi Indonesia, Volume 20, pp 171-188; doi:10.32491/jii.v20i2.523
Marosatherina ladigesi is one of endemic fishes in South Sulawesi and also as ornamental fish. Anthropogenic activities such as destructive fishing and degradation caused by the dredging of sand carried M. ladigesi to the red list of threatened IUCN category as vulnerable species. Accordingly, conservation efforts are needed to maintenance fish population in its habitat. The biologic information for conservation is reproduction of fishes. This research aimed to described reproduction of Celebes rainbow fish including sex ratio, gonad maturity, gonado-somatic index, fecundity, and distribution of egg diameter in Pattunuang and Batu Puteh Rivers, South Sulawesi. This research was conducted from May 2018 to April 2019. The result showed that the sex ratio in Pattunuang and Batu Puteh rivers were 1,00:1,60 and 1,00:1,08, respectively. This species spawned from the end of dry season to the early rainy season. Fecundity of fish in Pattunuang and Batu Puteh rivers were 22-795 eggs and 69-571 eggs, respectively. Based on distribution of egg diameter, Celebes rainbowfish categorized as total spawner. For the conservation of this species is recommended to catch restrictions in the spawning season and for male fish, and needs to be proposed the conservation in situ to determine both of rivers as reservoir area because these habitats are a source of germplasm.
Jurnal Iktiologi Indonesia, Volume 20, pp 81-92; doi:10.32491/jii.v20i1.512
Eco-biological information of green swordtail in Tamblingan Lake is unknown. This research aimed to reveal sex ratio, gonadosomatic index, viviparity, spawning time and location of green swordtail in Tamblingan Lake. Fish was collected by gill nets with a mesh size of 0.5 and 1.0 cm in five sampling stations from January to June 2019. Total length and body weight of all fish samples were measured then dissected to observe the level of gonad maturity and viviparity in female fish. A total of 373 green swordtail with total length ranged and body weight ranged from 30.4-69.2 mm and 0.7935 – 7.6612 g, respectively. The results showed that males outnumberd of females in all sampling periods. Gonadosomatic index of male and female ranged from 0.159-1.239 and 0.204-13.592, respectively. The mature individuals were captured in all sampling stations and observation times. This species has a good reproductive potential with viviparity ranges between 6-54 juveniles.
Jurnal Iktiologi Indonesia, Volume 20, pp 1-12; doi:10.32491/jii.v20i1.508
Plastic wastes in marine environment will be degraded for long period of time to become microplastics. The small size of microplastics could be ingested by marine species which has lead to harmful impacts not only to the marine species but also to human. This research aimed to investigate microplastics ingestion in four commercial fishes in the Bali Strait, namely largehead hairtail (Trichiurus lepturus), Indian scad (Decapterus ruselli), Bali sardinella (Sardinella lemuru), and Indian mackerel (Rastrelliger kanagurta). Thirty fish samples from each species of fishes were obtained from the fishermen. Microplastics contents were identified visually using microscope from the gastrointestinal tracks of the fish and polymer of microplastics were identified using Fourier Transform Infra-Red (FTIR) test. The results showed that three types of microplastics (fiber, film and fragment) were found in the four species of fishes with different total abundances. The highest abundance was found in Bali sardine (7.03±0.49 particle individual-1), followed by Indian mackerel (5.03±0.50 particle individual-1), Indian scad (4.23±0.38 particle individual-1) and largehead hairtail (3.83±0.50 particle individual-1). FTIR test showed that polymer types of microplastic found were polyvinyl chloride (PVC), polyamide (PA), polycarbonate (PC), dan polyethylene (PE).
Jurnal Iktiologi Indonesia, Volume 20, pp 47-58; doi:10.32491/jii.v20i1.510
The objectives of this research was to evaluate the inheritance of albino slayer phenotype in brushmouth (Hypostomus plecostomus, Linn 1758) through the crosses and reproduction performance. The crossing scheme consisted of reciprocal crosses between albino slayer and albino non slayer (SN, NS) and between albino slayer (SS), each spawning in pairs (1:1) with three replications and twice spawning. The fish used in this study were brushmouth fish (Hypostomus sp.) albino Slayer males 9.07 ± 0.5 cm, albino slayer females 8.96 ± 0.4 cm, albino non slayer males 8.87 ± 0.17 cm, and albino non slayer female 8.86 ± 0.16 cm. Slayer phenotype category was identified based on the caudal length fin with 4.43 ± 0.64 cm. Parameters determined included the phenotype distribution of albino slayer, total number of eggs, fertilization rate, hatching rate and survival rate. The results showed that all crossing schemes produced four phenotypes classes including normal slayer, normal non slayer, albino slayer and albino non slayer. The slayer phenotype of albino brushmouth was highest percentage (75%) in crossing with male albino slayer (SN, SS) and highest number of eggs, while the reciprocal crossing with female albino slayer (NS) produced albino slayer 55% and lower egg count. The ratio of tail fin length to body length in albino slayer phenotype was lower than normal phenotype of broom fish. The fertilization and hatching rates were not significantly different in all crosses; however the number of eggs decreased in the second spawning. The similar phenotype cross between albino slayer phenotypes (SS) resulted the best average of survival rate (92%).