Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Indonesian Fisheries Research Journal

ifrj
Website

Published by Kementerian Kelautan dan Perikanan RI

ISSN : 08538980 EISSN : 25026569 DOI : -

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Indonesian Fisheries Research Journal published in Indonesia by Center for Fisheries Research. Indonesian Fisheries Research Journal publishes research results on resources, fisheries biology, management, environment related to marine, coastal and inland waters.

Arjuna Subject : -

Articles 7 Documents

Search results for , issue "Vol 19, No 1 (2013): (June 2013)" : 7 Documents clear

CATCH AND EFFORT INFORMATION FOR ALBACORE TUNA (THUNNUS ALALUNGA) BY INDONESIA’S LONGLINERS OPERATING FROM BENOA Lilis Sadiyah; Budi Nugraha; Agustinus Anung Widodo
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Albacore (Thunnus alalunga - ALB) catch was the second highest tuna landed at Benoa Fishing Port and they are mostly landed as frozen bycatch. This paper attempts to provide information on ALB catch and effort trends by Benoa based longline vessels collected by the Benoa Port-based Catch Monitoring and Scientific Observer Programs. The ALB catch landed at the Benoa Fishing Port in 2010 was estimated by the Research Institute for Tuna Fisheries (RITF) to be about 983.14 tons, whereas based on the Indonesian Tuna Long Line Association (ATLI), ALB catch landed at Benoa Fishing Port in 2010 amounted of 2,715.42 tons. This discrepancy was due to sampling for frozen catch (including ALB) could not be conducted in some companies and also there was one company that sell their catch direct to the collector. The observed longline sets were concentrated within the area between 10° - 20°S and 105° - 120°E. Since 2008, the observed setting positions have never extended to south of 20°S. The higher catch rates of ALB were in area south of 15°S.

GROWTH AND EXPLOITATION STATUS (Channa striata Bloch, 1793) IN LUBUK LAMPAM FLOODPLAINS, SOUTH SUMATERA Zulkarnaen Fahmi; Syarifah Nurdawati; Freddy Supriyadi
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Due to the economic importance of C. striata in Lubuk Lampam floodplains (Indonesia), this study is aimed to estimate the biological and population parameters required for proposing a future plan to sustain and manage this valuable fish resource. The growth, mortality and explotation ratio of Channa striata estimated by employing FiSATProgramme are reported. The parameters of Von Bertalanffy growth model of 1,529 sample fishes were estimated as K= 0.36/ year, L” = 72.98 cm and to = -0.52 year. The coefficients of total mortality (Z), natural mortality (M) and fishing mortality (F) were 1.72, 0.73 and 0.99 year-1 respectively. Relative yield per recruit analysis shows that the presentexploitation rate (E) was 0.58. Yield per recruit can be maximized at the exploitation ratio of 0.5 and Lc/Linf values of 0.3. The Yield per recruit and biomass per recruit models indicated that, the fisheries status of C. striata in Lubuk Lampam floodplains exceed the limit reference point (Fmax), thus stock of this species in Lubuk Lampam floodplains is indicated being driving down.Reduction in fishing effort and increase number of selective fishing gears are suggested to sustain the fishery of Channa striata in Lubuk Lampam floodplains.

SHARK LONGLINE FISHERY IN TANJUNGLUAR-EAST LOMBOK Dharmadi Dharmadi; Ria Faizah; Lilis Sadiyah
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Studies on artisanal shark fisheries in Tanjungluar - East Lombok were conducted during the year 2001-2011 (except in 2003 and 2007). A sampling method called “rapid market survey” method was employed to collect catch data from surface and bottom longlines fishing, rapidly. Biological data and fisheries data were collected during survey. Catch data for shark were also obtained from daily records filled by TPI officers in Tanjungluar between 2009 and 2010. The results showed that sharklongline fishing was conducted every month. The trend of shark catches relates to the number of fishing vessels, fishing ground, and weather conditions at sea. The period between July and September is a transitional season from East to West seasons. During this season, the wind strength is weakened and a good fishing season for the fishers. The lowest catch occurs in January (1.06 tonnes) and the highest catch in September with the total catch of 24.6 tonnes. Sharks caught by surface longline were dominated by Silky shark, Carcharhinus falciformis (40-90%) with the size range of 100-125 cm. The catch of bottom longline was mostly consisting of fish in mature condition that dominated by Grey reef shark (Carcharhinus amblyrhynchos), Common black tip shark (C. limbatus), Spot tail shark (C. sorrah), and Scalloped hammerhead shark (Sphyrna lewini), with the size range of 125-200 cm, 170- 250 cm, 100-150 cm, and 170-300 cm, respectively. Surface longline fishing occurs in the offshore waters in depth more than 200 m to 3000 m, whereas bottom longline fishing is operated at a depth of 50-100 m around islands.

DNA BARCODING OF FRESHWATER FISH SPECIES OF MANNA RIVER (BENGKULU) AND SEMANKA RIVER (LAMPUNG) Arif Wibowo; Achmad Farajalah; Husnah Husnah
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

The identification of fish species is challenging. DNA barcoding provides new perspective in ecology and systematics of fishes. In this study, we assess intraspecific and interspecific genetic divergence among several freshwater fish species from Manna River of Bengkulu Province and Semanka River of Lampung Province, using data from mitochondrial cytochrome c oxidase subunit I (COI) gene. The results show that a total of six freshwater fish species identified in this study exhibited high levels of interspecific variation based on 51 analyzed sequences. Almost all species corresponded to a single species, cohesive array of barcode sequences distinct from other species. Based on Kimura Two Parameters (K2P) within species, mean pairwise sequence distances comparisons range from 0.3 to 6.3%, while interspecific comparisons were much higher range between 1.7 to 29.4%, except species Tor macrolepis and Tor putitora showed high levels of genetic similarities and no reciprocal monophyly. Using this method will obviously allow the identification eggs, larvae, fillets and fins of freshwater fish.

COMPARISON OF AGE ESTIMATES FROM VARIOUS HARD PARTS FOR REDFIN PERCH, Percafluviatilis, IN TASMANIA Irwan Jatmiko; James Haddy; Mike Williams
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Whole otoliths, sectioned otoliths, scales and vertebrae were used to select the most suitable for age determination of redfin perch, Percafluviatilis. Redfin perch were sampled from Trevallyn Lake and Brushy Lagoon using fyke nets, gillnets, electrofishing and rod and line angling. Age estimates were assessed for comparison between readings and among structures. One-wayANOVA of readability scores highlighted that sectioned otolith was the most obvious compare to other hard parts. Sectioned otoliths also showed the highest (93.9%) agreement between readings, followed by vertebrae (68.7), scales (38.8) and whole otoliths (29.9). Furthermore, there were no significantly different (p>0.05) between first and second readings from sectioned otolith and vertebrae but significantly different (p <0.05) to those from scales and whole otoliths. When sectioned otoliths’ ages were compared with other structures, vertebrae showed the highest (47.6%) agreement to those followed by scales (25.2%) and whole otoliths (20.4%). Age estimates from sectioned otoliths were significantly different (p<0.05) to the values obtained from vertebrae, scales and whole otoliths.This finding demonstrated that sectioned otoliths are the best hard part for age determination for redfin perch in Tasmania.

ACOUSTIC CLASSIFICATION OF FRESHWATER FISH SPECIES USING ARTIFICIAL NEURAL NETWORK: EVALUATION OF THE MODEL PERFORMANCE Zulkarnaen Fahmi; Wijopriono Wijopriono
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Hydroacoustic techniques are a valuable tool for the stock assessments of many fish species. Nonetheless, such techniques are limited by problems of species identification. Several methods and techniques have been used in addressing the problem of acoustic identification species and one of them is Artificial Neural Networks (ANNs). In this paper, Back propagation (BP) and Multi Layer Perceptron (MLP) of the Artificial Neural Network were used to classify carp (Cyprinus carpio), tilapia (Oreochromis niloticus), and catfish (Pangasius hypothalmus). Classification was done using a set of descriptors extracted from the acoustic data records, i.e. Volume Back scattering (Sv), Target Strength (TS), Area Back scattering Strength, Skewness, Kurtosis, Depth, Height and Relative altitude. The results showed that the Multi Layer Perceptron approach performed better than the Back propagation. The classification rates was 85.7% with the multi layer perceptron (MLP) compared to 84.8% with back propagation (BP) ANN.

DISCARDS OF THE INDONESIAN TUNA LONGLINE FISHERY IN INDIAN OCEAN Bram Setyadji; Budi Nugraha
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Research Center for Fisheries

Incidental by-catch and associated discarding are difficult to estimate on the basis of logbook information because they are poorly reported by fishing masters and their importance varies with several interrelated factors. The purpose of this paper is to inform the commonly discarded fishes of the Indonesian tuna longline fishery in the Indian Ocean. The study was carried out during 2010 – 2011 following six commercial tuna longline vessels based in Port of Benoa. Discards composition was dominated by longnose lancetfish and pelagic stingrays which composed almost half of total discards. Almost half of total catch are discards and half of discards are disposed dead or dying.

Page 1 of 1 | Total Record : 7

Filter by Year

2013 2013

Filter By Issues

All Issue Vol 31, No 1 (2025): June (2025) Vol 30, No 2 (2024): (Desember) 2024 Vol 30, No 1 (2024): (June) 2024 Vol 29, No 2 (2023): (December 2023) Vol 29, No 1 (2023): (June) 2023 Vol 28, No 2 (2022): (December 2022) Vol 28, No 1 (2022): (June) 2022 Vol 27, No 2 (2021): (December) 2021 Vol 27, No 1 (2021): (June) 2021 Vol 26, No 2 (2020): (December) 2020 Vol 26, No 1 (2020): (June) 2020 Vol 25, No 2 (2019): (December) 2019 Vol 25, No 1 (2019): (June) 2019 Vol 24, No 2 (2018): (December) 2018 Vol 24, No 1 (2018): (June) 2018 Vol 23, No 2 (2017): (December, 2017) Vol 23, No 1 (2017): (June, 2017) Vol 22, No 2 (2016): (December, 2016) Vol 22, No 1 (2016): (June 2016) Vol 21, No 2 (2015): (December 2015) Vol 21, No 1 (2015): (June 2015) Vol 20, No 2 (2014): (December 2014) Vol 20, No 1 (2014): (June 2014) Vol 19, No 2 (2013): (December 2013) Vol 19, No 1 (2013): (June 2013) Vol 18, No 2 (2012): (December 2012) Vol 18, No 1 (2012): (June 2012) Vol 17, No 2 (2011): (December, 2011) Vol 17, No 1 (2011): (June 2011) Vol 16, No 2 (2010): (December, 2010) Vol 16, No 1 (2010): (June 2010) Vol 15, No 2 (2009): (December 2009) Vol 15, No 1 (2009): (June 2009) Vol 14, No 2 (2008): (December 2008) Vol 14, No 1 (2008): (June 2008) Vol 13, No 2 (2007): (December 2007) Vol 13, No 1 (2007): (June 2007) Vol 12, No 2 (2006): (December 2006) Vol 12, No 1 (2006): (June 2006) Vol 11, No 2 (2005): (December 2005) Vol 11, No 1 (2005): (June 2005) Vol 8, No 1 (2002): (2002) Vol 7, No 1 (2001): (2001) Vol 5, No 1 (1999): (1999) Vol 4, No 2 (1998): (1998) Vol 4, No 1 (1998): (1998) Vol 3, No 1 (1997): (1997) Vol 2, No 1 (1996): (1996) Vol 1, No 1 (1995): (1995) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Arief Gunawan

Contact Email
ifrj.puslitbangkan@gmail.com

Phone
-

Journal Mail Official
ifrj.puslitbangkan@gmail.com

Editorial Address
-

Location
Kota adm. jakarta pusat,

Dki jakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Arief Gunawan

Contact Email ifrj.puslitbangkan@gmail.com

Phone -

Journal Mail Official ifrj.puslitbangkan@gmail.com

Editorial Address -

Location Kota adm. jakarta pusat, Dki jakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Arief Gunawan

Contact Email
ifrj.puslitbangkan@gmail.com

Phone
-

Journal Mail Official
ifrj.puslitbangkan@gmail.com

Editorial Address
-

Location
Kota adm. jakarta pusat,

Dki jakarta

INDONESIA