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Ahmadi Riyanto
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INDONESIA
Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology)
Published by Masyarakat Iktiologi Indonesia
ISSN : 16930339     EISSN : 25798634     DOI : https://doi.org/10.32491
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Aims and Scope Aims: Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) aims to publish original research results on fishes (pisces) in fresh, brackish and sea waters including biology, physiology, and ecology, and their application in the fields of fishing, aquaculture, fisheries management, and conservation. Scope: This journal publishes high-quality articles dedicated to all aspects Aquaculture, Fish biodiversity, Fisheries management, Fish diseases, Fishery biotecnology, Moleculer genetics, Fish health management, Fish biodiversity.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 420 Documents
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LAJU PERTUMBUHAN POPULASI IKAN GETE-GETE BESAR (Glossamia wichmanni) DI PERAIRAN DANAU SENTANI [Growth Rate Population of Glossamia mchmanni in Sentani Lake] Hendra Satria; Ronny Syam
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.210

Abstract

Research on population dynamics aspect of Glossamia wichmanni was conducted in January until November of 2006. Length frequency data analysis was done to estimate the growth parameter and fish population parameter with program package FiSAT. The research result of fish growth population was formulated according to Von Bertalanffy Growth Formula as Lt = 30.1 (1 - e ' 1(1 *0 1588)). recruitment pattern of fish stock showed a single of top recruitment, whereas the level exploitation stock fish in this time was E = 0.2896. The level exploitation value was still under the level of maximum exploitation (E = 0.468). Though mount the exploitation stock the fish still lower but management of original fish types potency in adjacent of Sentani lake waters shall be done to make sustainable yield by specifying fishery zones, make conservation area as specially indigenous species, lesser or negate all human activities be able to depressing of the original fish population be likely existence of introduction exotics fish types that were by introduction or not on purpose.
ASPEK REPRODUKSI IKAN MOTAN {Thynnichthys polylepis Bleeker, 1860) DI RAWA BANJIRAN SUNGAI KAMPAR KIRI, RIAU [Reproductive aspects of Thynnichthys polylepis Bleeker, 1860 in floodplain river of Kampar Kiri, Riau] Vera Dewiana Bakhris; M. F. Rahardjo; Ridwan Affandi; Charles PH Simanjuntak
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.211

Abstract

Motan, Thynnichthys polylepis is one of fish fauna in floodplain, Kampar Kiri River. The research was done from Juni until December 2005, was aiming to describe information on reproductive aspects of motan fishes i.e. sex ratio, gonado somatic index, gonado somatic stages, first size of maturity, fecundity, and egg diameters. Total samples were 479 individuals, consisted of 251 males and 228 females. The spawning seasons was on September-December. Fecundity ranged 718-27.636 eggs from 107 individual females. Spawning pattern was total spawner.
JENIS IKAN KERAPU (SERRANIDAE) DAN HUBUNGAN PANJANG BERAT DIPERAIRAN BERAU, KALIMANTAN TIMUR [Grouper species and length-weight relationship in Berau waters, East kalimantan] Siti Nuraini
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.212

Abstract

Grouper fish was identified in Berau waters in April and July 2005, and March 2006. The number of fish found was 25 species in five genera: Epinephelus, Plectropomus, Cephalopolis, Variola, and Cromileptes. Some species such as Cromileptes altivelis, Epinephelus lanceolatus, and P. aerolalus were vulnerable species; whereas Cromileptes altivelis, Epinephelus lanceolatus, P. leopardus, P. laevis dan P. aerolatus has listed in red data book. E. coioides, P. leopardus, P. laevis are isometric, and P. oligocanthus, P. laevis, V. louti are allometric.
DAMPAK LOGAM BERAT TERHADAP PERUBAHAN POLIMORFISMEIKAN BADUKANG (Arius sp.) DI ESTUARIA MUARA SUNGAI KAHAYAN DAN KATINGAN KALIMANTAN TENGAH [Impact of heavy metals on polymorphism changes of catfish {Arius sp.) in estuaries of Kahayan and Katingan Rivers, Edison Harteman; Dedi Soedharma; Adi Winarto; Harpasis S. Sanusi
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.213

Abstract

The purpose of this study was to evaluate impact of metal pollutants: Pb, Cd, and Hg on morphism changes of fish phenotype through concentration and bio-concentration factor (BCF). The study site was located in the river mouths of Kahayan River and Katingan River. Samples collected were water sample and fish sample with malformation on pectoral and caudal hard fin rays. Water sample and fish bone were analysed by Atomic Absorption Spectrophotometer (AAS). The results indicated that lead (Pb) concentration in the estuary and in pectoral and caudal hard fin rays was the highest compared to cadmium (Cd) and mercury (Hg) concentration. It may because Cd and Hg have high affinity to bone tissue of pectoral and caudal hard fin rays than Pb. The highest lead concentration in the water could cause high its metal in bone tissue. If metal in river mouth has not detected or low concentration than standard values of water and biota, it does not mean the water safe to fish and other aquatic organism because heavy metal has been continuously accumulated in tissue. Pb, Cd and Hg have ability to replace Calcium in Phosphate of cell of pectoral and caudal fins. This causes inhibited Ca absorption into bone cell. As consequence, chemical composition on bone changes the bone experiences softening inhibited hardening, and malformation. Bone malformation was caused by changes of bone chemical composition and environmental effects.
KELIMPAHAN, KOMPOSISI, DAN SEBARAN IKTIOPLANKTON DI LAUTARAFURA [Abundance, composition, and distribution of ichthyoplankton in Arafura Sea] Karsono Wagiyo
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.214

Abstract

Study was conducted in Arafura Sea in 2006. The area was divided to four sub-areas; namely West of Aru Island, East of Aru Island, West of Mapi and Mimika, and Tanjung Dolak. In the west of Aru Island we found 26 families of ichthyoplankton, in which the dominant were Clupeidae, Labridae, and Teraponidae. Larvae abundance was mean 204 individuals/1000 m3, ranged from 16 ind./ 1000 m3 to 1138 ind./lOOO m3. Eggs abundance mean 119 /1000 m3, ranged from 9 eggs /1000 m3 to highest 590 eggs /1000 m3. Sub area East of Aru Island we found 24 families, in which dominant were Balistidae, Engraulidae, and Scaridae. Abundance of larvae mean 1126 ind/1000 m3, varied from 15 ind/1000 m3 to 3,844 ind/1000 m3. Mean abundance of eggs was 188 eggs/1000 m3, varied from 9 eg'gs/1000 m3 to 532 eggs/1000 m3. Sub area West Mapi and Mimika was found 24 families, in which the dominant are Engraulidae, Scaridae, and Clupeidae. Mean of larvae abundance 12.008 ind./lOOO m3, ranged from 13 ind./lOOO m3 to 39,356 ind./ 1000 m3. Mean abundance of eggs was 105 eggs/1000 m3, ranged from 0 /1000 m3 to 731 eggs /1000 m3. Sub area Tanjung Dolak was found 21 families, in which the dominant were Scianidae, Kyphosidae, and Clupeidae 16.35 %. Mean abundance of larva 1025 ind./lOOO m3, was least 3 ind./lOOO m3 and highest 6072 ind./lOOO m3. Mean abundance of eggs 33 /1000 m3, which it varied from 0 /1000 m3 to 149 eggs /1000 m3.
BEBERAPA PARAMETER BIOLOGII KAN KUNIRAN (Upeneus sulphureus) HASIL TANGKAPAN CANTRANG YANG DIDARATKAN DIBRONDONG JAWA TIMUR [Biological parameters of the goat fishes, Upeneus sulphureus, caught by danish seine landed atBrondong, East Java] Bambang Sumiono; Siti Nuraini
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.215

Abstract

Study on relationships between length and weight, total length (TL) and fork length (FL), total length and standard length (SL) of goat fishes, Upeneus sulphureus was carried out based on length frequency data. Data was collected from March to May 2006 in fisheries landing place at Brondong, East Java. The total length-weight relationship of U. sulphureus follows the equation of W = 0.144 LJ J”. It means that increasing the length of goat fish was faster than their weight. The relationship between FL and TL follows the equation of FL = 0,9429 TL - 0.1899; relationship between SL and TL is SL = 0.4889 TL - 0.2938, and between SL and FL is SL = 0.8887 FL - 0.0984. The sex ratio of samples of fish captured by danish seine were male/female = 1 : 2.79. More than 50% of males and females were immature. The length at first capture by danish seine was found to be 13.3 cm TL. The catch composition and fishing seasons provide additional information on the goat fisheries biology landed in Brondong, East Java.
FAUNA IKAN DI PERAIRAN DANAU RAWA GAMBUT DI BARITO SELATAN KALIMANTAN TENGAH [Fish fauna in peat swamp lake in South Barito, Central Kalimantan] Syarifah Nurdawati; Husnah Asyari; Eko Prianto
Jurnal Iktiologi Indonesia Vol 7 No 2 (2007): Desember 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i2.216

Abstract

Research on fish fauna in peat swamp was conducted in May 2005 representing dry season and in December 2005 representing rainy season as a mean to describe fish species living in peat swamp. Survey location was in Sababilah Lake, Raya Lake and Ganting Lake. There were 56 species in Sababilah Lake, 27 species in Raya Lake and 51 species in Ganting Lake. Each lake had typical species i.e. Cyclocheilichthys janthochir in Raya Lake, Hemirhampodhon tengah, Luciocephalus pulcher, Ompok weberi and Mystus olyroides in Sababilah Lake. Dominant species were Channa pleuropthalmus in Raya Lake, Belontia hasselti, Channa bankanensis) in Sababilah Lake, and Leptobarbus melanopterus Key and Thynnichthys polylepis) in Ganting Lake.
FAUNA IKAN EKOSISTEM HUTAN RAWA DISUMATERA SELATAN [Fish Fauna of Swampforest Ecosystem in South Sumatera] Syarifah Nurdawati; Dadjek Prasetyo
Jurnal Iktiologi Indonesia Vol 7 No 1 (2007): Juni 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i1.217

Abstract

Research on fish fauna in some types of swamp forest was done during two seasons that are rainy season and dry season as a mean to describe fish species living in Cala Lake ecosystem. This research was done by specifying some stations that are Kutung River (I), Dua Besar River (II), Cala Lake (III), and Candi Floodplain (IV). Gathering of fish species by taking fisherman catches with not selective gear (empang, kilung and corong). At this research, it was found 75 fish species consisted of seven orders, 20 families, 45 genera, and 75 species; where 53 species were found at station I, 51 species at station II, 53 species at station HI, and 41 species at station IV. As many as 58 species fish seed found at swamp forest to find food (feeding ground), 31 fish species is doing spawn (spawning ground), and 14 fish larvae stay -in the swamp forest indicating a nursery ground.
KOMPOSISI IKAN PETEK (LEIOGNATHIDAE) DI PERAIRAN BARAT SUMATRA [Composition of pony fish (Leiognathidae) in west of Sumatra waters] Wedjatmiko Wedjatmiko
Jurnal Iktiologi Indonesia Vol 7 No 1 (2007): Juni 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i1.218

Abstract

The research was conducted on August, 2005 and August, 2006 using RV. Bawal Putih. Result of this research shows that Pony fish (Leiognathidaej was the largest family catched 59.85 % (2005) and 49.74 % (2006). There was three genera of Leiognathidae catched in West of Sumatra waters namely Leiognathus (10 species), Secutor (2 species) and Gaza (1 species). The highest catch of the pony fish was a Leiognathus bindus 59.85% (2005) and 49.74% (2006), (by average size 8.0 - 8.5 cm (FL)). The largest size of pony fish in west of Sumatra waters was a Leiognathus fasciatus (with average size 18.0 cm (FL) and range size 13.0 - 20.5 cm). Vertically distribution of Leiognatidae was in the waters 41 - 50 m in depth, especially for Leiognathus bindus.
SUMBERDAYA IKAN CUCUT (HIIJ) YANG TERTANGKAP NELAYAN DI PERAIRAN L AUT JAWA [The shark resource caught by fishermen in Java Sea] Agustinus Anung Widodo; Mahiswara Mahiswara
Jurnal Iktiologi Indonesia Vol 7 No 1 (2007): Juni 2007
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v7i1.219

Abstract

Many of fishermen including in Java Sea made shark as fishing target species. Shark is sub group Elasmobranchii and group Cartilaginous. Comparing to the other fish species, information on shark in Indonesia is very lack. In order to identify regarding to the biological aspects on this species, a research was carried out in the year of 2003-2004. Data are got through enumerator and observer program. Sampling location is fish landing bases those covered Muara Angke fishing port (Jakarta), Kejawanan fishing port (Cirebon), Juwana fishing port (Pati) and Brondong fishing port. The kind of data covered shark species, size (TL), fecundity, sex ratio and stomach content. Result shows that there are 34 species of shark caught by fishermen in Java sea which is dominated by Carcharhinus dussumieri (24.74 %), C. melanopterus (8.26 %), Sphyrna lewini (7.26 %), C. falciformis (6.43%) and C.sorrah (6.37 %). The size (TL) of each species are C.dussumieri mostly about 80 cm, C.melanopterus mostly has size about 45 cm and 115 cm, Sphyrna lewini mostly about 190 cm, C falciformis mostly about 90 cm and C.sorrah mostly about 120 cm. As well known that shark is a real predator, but favourite food of shark in Java Sea was shrimp. Fecundity of shark in Java Sea generally was low.

Page 29 of 42 | Total Record : 420

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