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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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The growth and survival rate of red tailed tinfoil, Barbonymus balleroides (Valenciennes, 1842) post-larvae in aquariums with different densities Irin Iriana Kusmini; Fera Permata Putri; Deni Radona
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.301

Abstract

Tinfoil barb Barbonymus balleroides (Valenciennes, 1842) is one of the local freshwater fish that have the potential to be cultured as fish consumption as well as ornamental fish. This study aimed to determine of the growth and survival rate of red tailed tinfoil post-larvae based stocking density (3 individual L-1, 4 individua lL-1 and 5 individual L-1). This study was conducted in plasma nutfah research station, Bogor and experimentally used completely randomized design (CRD) with three treatments and three replications for each treatment. The post-larvae used in the experiment were sized 0.37 cm from induced breeding spawning. The post-larvae were reared in the aquarium (dimension= 60x30x30 cm) with a volume of 34 liters water. During reared (90 days) post-larvae were given commercial feed (protein content =40%) at-satiation with frequency of three times per day. The result showed the value of length, weight and the highest specific growth rate (P<0.05) in the treatment of stocking density 5 individual^1 with value of 1.8 cm, 0.24 g and 2.72%, while the highest survival rate of 3 individual-1 with a value of 86.76%. Abstrak Ikan lalawak Barbonymus balleroides (Valenciennes, 1842) merupakan ikan lokal air tawar yang memiliki potensi untuk dibudidayakan sebagai ikan konsumsi maupun sebagai ikan hias. Tujuan penelitian ini untuk mengevaluasi pertumbuhan dan sintasan pascalarva ikan lalawak berdasarkan padat tebar (3 ekor L-1, 4 ekor L-1 dan 5 ekor L"1). Penelitian dilakukan di Instalasi Penelitian Plasma Nutfah Perikanan Air Tawar Cijeruk, Bogor dan dilaksanakan secara eksperimental menggunakan rancangan acak lengkap dengan tiga perlakuan dan tiga kali ulangan. Pascalarva yang digunakan berukuran 0,37 cm dan merupakan hasil pemijahan secara induksi hormon. Pemeliharaan dilakukan dalam akuarium berukuran 60x30x30 cm3 dengan volume air 34 L. Selama 90 hari pemeliharaan pascalarva diberi pakan komersial berbentuk remah yang mengandung protein 40 % secara at-satiasi dengan frekuensi tiga kali per hari (pagi, siang, dan sore). Hasil penelitian menunjukkan nilai panjang, bobot, dan laju pertumbuhan spesifik tertinggi (P<0,05) pada perlakuan padat tebar 5 ekor L-1 dengan nilai 1,8 cm, 0,24 g dan 2,72% sedangkan sintasan tertinggi pada perlakuan 3 ekor L-1 dengan nilai 86,76%.
Serotonin application in pregnant mare serum gonadotropin hormone and dopamin antagonist formulation to induce gonadal development of Indonesian tigerfish (Datnioides microlepis Bleeker, 1854) Bastiar Bastiar; Agus Oman Sudrajat; Melta Rini Fahmi
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.302

Abstract

The objective of study was to analyze the effect of serotonin (5-HT) in the formulation of hormones Pregnant Mare Serum Gonadotropin (PMSG) and dopamin antagonist (AD) hormones to gonad development of tigerfish. This study used completely randomized design (CRD) with five treatments of hormone namely: (P1) 1 ml of 0.9% NaCl (control); (P2) 20 IU PMSG+10 mg AD; (P3) 20 IU PMSG AD+10 mg+0.2 mg 5-HT; (P4) 20 IU PMSG+10 mg AD+2 mg 5-HT; and (P5) 20 IU PMSG+10 mg AD+4 mg 5-HT. Each treatment was tested on five fish as individual replications. Hormone injected intramuscularly at the lower part of the dorsal fin of fish every 10 days. The fish were reared for 60 days. Fish that were used at this study were originate from natural catches as much as 25 fishes with 17.5-33.0 cm of total length and 118-926 g of body weight. During the study, fish fed using shrimp and small fish (live) twice daily at satiation. Measured parameters were gonadosomatic index (GSI), hepatosomatic index (HSI), 17P-estradiol (E2) plasma concentration and gonad maturity level based on morphology and histology examination. The results showed that the use of 2 mg of 5-HT are added to 20 IU PMSG and 10 mg AD (treatment P4) has stimulated the fish to had the highest GSI (2.38 ± 0.06%) and HSI (3,09±0,12%) which was significantly different to other treatment. The treatment (P4) could increase the E2 plasma concentration (37.14±2.99 pg.ml-1) two fold compared with the concentration before injection and stimulated the gonadal development to stage III. Abstrak Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan serotonin (5- hydroxytryptamine atau 5-HT) dalam formulasi hormon Pregnant Mare Serum Gonadotropin (PMSG) dan antidopamin (AD) terhadap perkembangan gonad ikan ringau. Penelitian ini menggunakan rancangan acak lengkap dengan lima perlakuan (dosis.kg-1 bobot tubuh ikan): (P1) 1 ml NaCl 0,9% (kontrol); (P2) 20 IU PMSG+10 mg AD; (P3) 20 IU PMSG+10 mg AD+0,2 mg 5-HT; (P4) 20 IU PMSG+10 mg AD+2 mg 5-HT; dan (P5) 20 IU PMSG+10 mg AD+4 mg 5-HT. Setiap perlakuan diujikan pada lima ekor ikan sebagai ulangan individu. Penyuntikan hormon dilakukan setiap 10 hari dengan lama penelitian 60 hari. Hormon disuntikkan secara intramuskular pada bagian bawah sirip punggung ikan uji. Ikan yang digunakan merupakan hasil tangkapan alam dengan ukuran panjang total 17,5-33,0 cm dan bobot tubuh 118-926 g. Selama penelitian, ikan uji diberi pakan berupa udang dan ikan-ikan kecil (hidup) dua kali sehari secara satiasi. Parameter yang diamati adalah indeks kematangan gonad, indeks hepatosomatik, konsentrasi estradiol-17p plasma dan tingkat kematangan gonad berdasarkan morfologi dan histologi gonad. Hasil penelitian menunjukkan penggunaan 2 mg 5-HT dalam 20 IU PMSG dan 10 mg AD (perlakuan P4) menghasilkan perkembangan gonad yang lebih baik dibandingkan perlakuan lainnya. Nilai indeks kematangan gonad, indeks hepatosomatik, dan konsentrasi E2 plasma tertinggi diperoleh pada perlakuan P4 dengan nilai masing-masing sebesar 2,38±0,06%; 3,09±0,12% dan 37,14±2,99 pg.ml-1. Nilai tersebut berbeda nyata p<0.05) dengan perlakuan lainnya. Perlakuan P4 meningkatkan konsentrasi E2 plasma dua kali lebih besar dibanding-kan sebelum penyuntikan serta menghasilkan perkembangan gonad yang mencapai tingkat kematangan gonad tahap III.
Diet of scalloped perchlet, Ambassis nalua (Hamilton, 1822) in Pabean Bay, West Java Eda Putri Santi; M. F. Rahardjo; Sulistiono Sulistiono
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.303

Abstract

The objective of the present study was to describes the diet of scalloped perchlet (Ambassis nalua) based on the time and fish length. This study was conducted from July to December 2015 in Pabean Bay, Indramayu. The fish were collected monthly in three zones i.e. at the mouth of river, midle and out of estuarine. Fish samples were collected using trammelnet and trapnet. The index of preponderance was used to analysis the diet composition of the fish. The stomach content of a total of 407 fish samples of 283 females, 118 males, and 6 juveniles were analyzed. The analysis showed the scalloped perchlet fed on crustaceans, juvenile of fish, isopod, and amphipod, indicate a carnivorous feeding habit. The crustaceans was the main for item of scalloped perchlet Abstrak Penelitian ini bertujuan untuk menganalisis jenis makanan ikan seriding (Ambassis nalua) menurut waktu dan ukuran panjang ikan. Penelitian dilaksanakan di perairan Teluk Pabean, Indramayu dari bulan Juli hingga Desember 2015. Penangkapan ikan dilakukan pada tiga zona, yaitu bagian dalam yang berupa muara sungai, bagian tengah, dan bagian luar estuari dengan interval satu bulan. Alat tangkap yang digunakan adalah sero dan jaring. Analisis makanan menggunakan Indeks Bagian Terbesar. Jumlah ikan seriding yang diamati saluran pencernaannya adalah 407 ekor dengan komposisi betina 283 ekor, jantan 118 ekor, dan yuwana 6 ekor. Ikan seriding merupakan ikan karnivora dengan menu makanan terdiri atas empat kelompok organisme yaitu krustase, yuwana ikan, amfipoda, dan isopoda. Ikan seriding menunjukkan menu makanan utama yang sama yaitu krustase baik berdasarkan waktu maupun ukuran ikan.
Effect of different male and female sex ratio on growth of juvenile blue tilapia Oreochromis aureus (Steindachner 1864) Adam Robisalmi; Priadi Setyawan; Bambang Gunadi
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.304

Abstract

Blue tilapia is one strain of tilapia potential to be developed. This fish has highly tolerant of low temperatures and salinity. In the development of aquaculture of tilapia, male monosex give higher production than mix male-female culture. This activity aims to determine the growth performance of juvenile blue tilapia reared by different ratio of male and female. The study was conducted for 90 days at the Research Institute for Fish Breeding Sukamandi. The fish used are blue tilapia stocking with the initial weight 32.32±2.34 g. Rearing juvenile of blue tilapia using net 2x1 m2 with stocking density 30 fish per net. The treatment is a difference in the ratio of male and female i.e A (100% male), B (75% male: 25% female), C (50% male: 50% female), D (25% male: 75% female), and E (100% female). The fish were fed with formulated food (32% protein) twice daily as much as 5 % of the biomass. The parameters observed were absolute growth, specific growth rate, daily growth rate, feed conversion ratio and survival rate. The results showed A, blue tilapia with 100% male had highest growth performance, longest and the highest weight i.e 8.33±0.67cm and 136.50± 11.92g; with highest specific growth rate, food conversion and survival rate, i,e 1.76±0.05 weight day-1, 1.52±0,20 and 96.66%. While the lowest growth and feed conversion was D, fish mix culture of blue tilapia (25% male: 75% female). Blue tilapia male 100% monosex is recommended to use in aquaculture because it showed the highest growth with lower feed conversion. Abstrak Ikan nila biru (Oreochromis aureus) merupakan satu jenis ikan yang potensial untuk dikembangkan. Ikan ini memiliki keunggulan toleran terhadap suhu rendah dan salinitas tinggi. Dalam perkembangan budi daya, populasi ikan nila tung-gal kelamin jantan diyakini memberikan hasil produksi lebih baik dibandingkan kelamin campuran. Kegiatan ini bertu-juan untuk mengevaluasi performa pertumbuhan yuwana ikan nila biru yang dipelihara dengan nisbah kelamin jantan dan betina berbeda. Penelitian dilakukan di Balai Penelitian Pemuliaan Ikan Sukamandi selama 90 hari. Ikan yang di-gunakan adalah ikan nila biru dengan bobot awal tebar 32,32±2,34 g. Yuwana nila biru dipelihara di hapa berukuran 2x1 m2 dengan padat tebar 30 ekor per hapa. Perlakuan adalah perbedaan nisbah kelamin jantan dan betina yaitu A (100% jantan), B (75% jantan : 25% betina), C (50% jantan : 50% betina), D (25% jantan : 75% betina) dan E (100% betina). Selama pemeliharaan ikan diberi pakan berkadar protein 32% dengan frekuensi dua kali sehari sebanyak 5% dari bobot ikan. Parameter yang diamati meliputi pertumbuhan mutlak, laju pertumbuhan spesifik, laju pertumbuhan harian, nisbah konversi pakan, dan sintasan. Hasil penelitian menunjukkan populasi ikan nila biru yang dipelihara 100% jantan mempunyai performa pertumbuhan panjang dan bobot tertinggi sebesar 8,33±0,67cm dan 136,50±11,92 g dengan laju pertumbuhan spesifik yang tinggi sebesar 1,76±0,05% bobot hari-1, konversi pakan 1,52±0,20 dan sintasan 96,66%, sedangkan pertumbuhan terendah pada populasi ikan nila biru campuran (25% jantan : 75% betina). Pengguna-an ikan nila biru monoseks jantan 100% dianjurkan untuk digunakan dalam kegiatan budi daya karena mempunyai pertumbuhan tertinggi dengan konversi pakan yang rendah.
Community structure of demersal fish resources based on the depth of the waters in the South China Sea (Indonesia Fisheries Management Zone 711) Robet Perangin angin; Sulistiono Sulistiono; Rahmat Kurnia; Achmad Fahrudin; Ali Suman
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.305

Abstract

Information on distribution and community structure of demersal fish resources are important to be known as an input to the management of demersal fisheries. This study aimed to analyze the diversity and distribution of demersal fish resources based on the differences in the depth of the waters and the linkages to the environment. Research conducted in the South China Sea in May to June 2015 by operating a trawl gear in the station preset. The method of analysis of demersal fish diversity use some ecological indices i.e Margalef species richness index, Shannon-Wiener diversity index, Pielou evenness index, and Simpson dominance index. The ecological index value then associated with environmental conditions, using principal component analysis. Distribution of the ecological index indicated the stability of communities demersal fish resources getting better with the increase of depth. The most affected to the level of species richness and distribution of demersal fish were the parameters of depth, temperature and salinity, while the abundance distribution of fishes were associated with dissolved oxygen, and water transparency. The implication, that the water environmental conditions greatly affected the distribution and abundance of demersal fish. Abstrak Informasi mengenai persebaran dan struktur komunitas sumber daya ikan demersal penting sebagai bahan masukan untuk pengelolaan perikanan demersal. Penelitian ini bertujuan untuk menganalisis tingkat keanekaragaman dan persebaran sumber daya ikan demersal berdasarkan perbedaan kedalaman perairan, serta keterkaitannya dengan lingkungan. Penelitian dilaksanakan di Laut Cina Selatan pada bulan Mei sampai Juni 2015 dengan mengoperasikan alat tangkap pukat ikan di stasiun yang telah ditetapkan. Metode analisis keanekaragaman hayati ikan demersal menggunakan beberapa indeks ekologi yaitu indeks kekayaan jenis Margalef, indeks keanekaragaman Shannon-Wiener, indeks keseragaman Pielou, dan indeks dominansi Simpson. Nilai indeks ekologi tersebut kemudian dikaitkan dengan kondisi lingkungan, menggunakan analisis komponen utama. Hasil penelitian menunjukkan tingkat kestabilan komunitas sumber daya ikan demersal semakin baik seiring dengan meningkatnya kedalaman. Kedalaman, suhu, dan salinitas merupakan parameter yang paling memengaruhi tingkat kekayaan jenis serta persebaran sumber daya ikan demersal, sedangkan persebaran kelimpahan ikan sangat terkait dengan oksigen terlarut dan kecerahan perairan. Implikasinya, kondisi lingkungan perairan sangat memengaruhi persebaran dan kelimpahan ikan demersal.
Food and the growth of introduced milkfish, Chanos chanos (Forsskal, 1775) in Sermo Reservoir, Kulon Progo Djumanto Djumanto; Bayu Eko Pranoto; Vinta Seta Diani; Eko Setyobudi
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.306

Abstract

The purpose of the research was to study feeding preferences and the growth of milkfish introduction into Sermo reservoir Kulon Progo regency. Research was carried out by introduction of milkfish juvenile which body length was ranges of 5-7 cm and weight of 0.6-1.0 g at a number of 10,000 individual fish. Fish sampling using gill nets was conducted monthly from May to October 2015. The captured milkfish brought to the laboratory for some measurements i.e length and weight of an individual fish, intestine length, and gut content investigation. The surface water plankton sample collected by a plankton net, then preserved in formaldehyde, identified and counted the number each plankton species. Data were analyzed to determine relative gut length, food type and feeding preferences, growth rate and length weight relationships. The results showed that relative intestinal length was 5.4 to 6.4, so milkfish categorized as herbivores. Phytoplankton was the only food found in the intestine fish size <14 cm, while zooplankton was found in fish size >15 cm. Zooplankton proportion in digestive tract increased as well as the size of milkfish. The dominant species of phytoplankton found in the digestive tract was Nitzschia sp., whereas zooplankton was Cyclop sp. and Diaptomus sp. The juvenile milkfish growth well in Sermo reservoir. The growth rate of daily length was ranged from 0.0084 to 0.2056 cm, while the growth rate of daily weight ranged from 0.0630 to 1.1182 g. The length weight relationship of milkfish formed an equation W = 0.0069 L 3 0186 with the regression index R2 = 0.98, so the growth of milkfish showed an isometric growth pattern. Further research is needed to determine the impact of the introduction of milkfish to the fish communities in the Sermo reservoir area. Abstrak Tujuan penelitian adalah untuk mengkaji makanan dan pertumbuhan ikan bandeng tebaran di waduk Sermo Kabupaten Kulon Progo. Penelitian dilakukan dengan menebar yuwana ikan bandeng yang panjang tubuh berkisar 5-7 cm dan bo-bot 0,6-1,0 g ke perairan Waduk Sermo sebanyak 10.000 ekor. Sampling ikan bandeng menggunakan jaring insang dilakukan tiap bulan sekali dari Mei sampai Oktober 2015. Ikan bandeng yang terjerat jaring dibawa ke laboratorium untuk diukur panjang, ditimbang bobot individu, dan dilakukan pembedahan untuk diambil saluran pencernaannya. Sampling plankton dilakukan dengan mengambil air permukaan menggunakan ember dan menyaring dengan plankton net, kemudian diawetkan dalam larutan formalin hingga identifikasi dan penghitungan jenisnya. Data dianalisis untuk me-nentukan jenis makanan dan pemilihan makanan, laju pertumbuhan, panjang usus relatif, dan hubungan panjang bobot. Hasil penelitian menunjukkan panjang usus relatif ikan bandeng sebesar 5,4-6,4 yang dikategorikan sebagai ikan herbi-vora. Jenis makanan yang ditemukan pada ikan berukuran <14 cm hanya fitoplankton, sedangkan zooplankton ditemu-kan pada ikan yang berukuran >15 cm. Proporsi zooplankton pada usus ikan semakin banyak seiring ukuran ikan bandeng. Jenis fitoplankton yang ditemukan dominan pada saluran pencernaan adalah Nitzschia sp., sedangkan zooplankton adalah Cyclop sp. dan Diaptomus sp. Yuwana ikan bandeng dapat tumbuh baik di kawasan Waduk Sermo. Laju pertumbuhan panjang harian berkisar 0,0084 - 0,2056 cm, sedangkan laju pertumbuhan bobot harian berkisar 0,06301,1182 g. Hubungan panjang bobot ikan bandeng membentuk persamaan W=0,0069 L 3,0186 dengan indeks regresi R2=0,98, sehingga ikan bandeng cenderung memiliki pola pertumbuhan isometrik. Penelitian lebih lanjut diperlukan untuk mengetahui dampak introduksi ikan bandeng pada komunitas ikan di Waduk Sermo.
Transportation of juvenile striped snakehead (Bloch 1793) with different densities in 3 ppt salinity media Jannesa Nasmi; Kukuh Nirmala; Ridwan Affandi
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.307

Abstract

The present study aimed to ensure the effect 3 ppt of salt addition into the transportation media water to the water quality, suvival rate, daily growth rate, and stress level after transportation. This study was consisted of two phase, the first phase was fish transportation for 24 hours and the second phase was 21 days rearing after-transportation. Snake-head larvae’s transported with five treatments i.e a transportation media with no salt addition and stocked with 30 larvae L-1 as the control, and four transportation media with 3 ppt salt addition at different densities (30, 45, 60, and 75 larvae L-1). During the transportation, the water quality and survival rate were determined. The first phase experiment showed that salt addition in transportation media maintained the water quality and higher survival rate than control. After 24 hours, 30 larvae of each treatment were stocked into tank with 0 ppt salinity media. The results showed no significant differences in the survival rate and growth rate at the different densities without salt addition. The pH and blood glucose levels were slowly back to normal in day 21. Abstrak Tujuan penelitian ini adalah untuk menganalisis pengaruh pemberian garam 3 ppt dalam media pengangkutan terhadap perubahan kualitas air dan laju sintasan selama pengangkutan, laju pertumbuhan harian, glukosa darah, dan pH darah pascapengangkutan. Penelitian ini terdiri atas dua tahap kegiatan, yaitu tahap satu adalah pengangkutan selama 24 jam dan tahap dua adalah pemeliharaan pascapengangkutan selama 21 hari. Pada tahap satu kantong plastik diisi air 1 L dan dilakukan pengepakan sesuai dengan perlakuan, yaitu perlakuan kontrol tanpa garam (kepadatan 30 ekor L-1) dan perla-kuan penambahan garam 3 ppt (kepadatan 30, 45, 60, dan 75 ekor L"1). Penelitian ini menggunakan metode rancangan acak lengkap dengan lima perlakuan dan empat ulangan. Hasil penelitian menunjukkan perlakuan dengan penambahan garam dalam media pengangkutan dapat mempertahankan kondisi kualitas air dan menghasilkan laju sintasan yang le-bih tinggi dibandingkan pada perlakuan tanpa garam. Tahap dua adalah pemeliharaan pascapengangkutan selama 21 hari. Setelah masa pengangkutan juvenil dari setiap perlakuan dan ulangan dipelihara 30 ekor per akuarium pada media bersalinitas 0 ppt. Hasil penelitian menunjukkan laju sintasan dan laju pertumbuhan pascapengangkutan tidak berbeda nyata pada setiap perlakuan. Glukosa darah dan pH darah perlahan kembali normal hingga pemeliharaan hari ke-21.
Oocyte development of scalloped perchlet, Ambassis nalua (Hamilton 1822) Nisha Desfi Arianti; M. F. Rahardjo; Ahmad Zahid
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.308

Abstract

Scalloped perchlet (Ambassis nalua) is a small, transparent, and abundant species inhabit in Pabean Bay, Indramayu. The present study aims to describes oosit development stages histologically and determine the spawning type of the Scalloped perchlet. Scalloped perchlet obtained from fishermen in Pabean bay, then gonads preserved by using a solution of BNF (Buffer Neutral Formalin). The gonadal histology of oosit made by HE staining method, then observed in microscope ca-mera. The development of the oocytes was classified into four stages i.e initial growth stage (the chromatin of the nucleus and perinuclear), cortical alveoli, vitellogenesis, and ripe. Based on the stages of oocytes, scalloped perchlet categorized as partial spawner. Abstrak Ikan seriding (Ambassis nalua) merupakan salah satu jenis ikan di perairan Teluk Pabean, Indramayu yang berukuran kecil, transparan dan tersedia dalam jumlah melimpah. Penelitian ini bertujuan untuk melihat perkembangan sel telur secara histologis dan menentukan tipe pemijahan ikan seriding. Ikan seriding didapatkan dari hasil tangkapan nelayan di Teluk Pabean, kemudian gonad contoh diawetkan dengan menggunakan larutan BNF (Buffer Neutral Formalin). Preparat histo-logis sel telur dibuat dengan metode pewarnaan HE, kemudian diamati dibawah mikroskop berkamera. Tahapan perkembangan oosit pada ikan seriding yaitu kromatin nukleus dan perinuklear (tahap pertumbuhan awal), kortikal alveoli, vitelo-genesis, dan pematangan. Tahapan tersebut menunjukkan bahwa ikan seriding merupakan tipe ikan yang memijah secara bertahap.
Feminization of climbing perch, Anabas testudineus (Bloch, 1792) through larvae immersion milk solutions and soy milk Helmi Zuryani; Boby Muslimin; Khusnul Khotimah
Jurnal Iktiologi Indonesia Vol 17 No 2 (2017): June 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i2.352

Abstract

The ability of climbing perch, Anabas testudineus (Bloch, 1792) to grow effectively can be done for a sex reversal using natural steroids active ingredient which are derived from cow’s milk through immersion of the fish larvae. This research aims to increase the ratio of the female sex, survival, and growth of the larvae of climbing perch. The research material is a juvenile of 7 days old which is gained from induce breeding methods. The research was conducted at a hatchery. Sex ratio was observed in biology laboratory and water quality was observed in chemical laboratory of the University of Muhammadiyah Palembang from March to May 2016. Post-larva was immersed with three media for the treatment i.e. cow’s milk (P1), soya milk (P2) and the mix (P3). The immersion was done by 10 hours; used 2 ml L-1 dozed on each part and 50 post-larva were immersed on jar sized 10 liters. After immersing the post-larva was reared during 60 days in aquarium sized 30x30x30 cm3 for observation of sex ratio and growth. Sampling method used is a random sampling. The post-larva and water were observed every 10 days with 40% material sample of post-larva. The result showed that best grow is in P1 (61.11%). The length growth is 3.77 cm, biomass growth is 1.69 g, and produce sex ratio of female is 77.78%. Abstrak Kemampuan ikan betok, Anabas testudineus (Bloch, 1792) untuk tumbuh secara efektif dapat dilakukan dengan pembe-tinaan menggunakan bahan aktif steroid alami yang berasal dari susu sapi melalui perendaman larva. Penelitian ini ber-tujuan untuk meningkatkan nisbah kelamin betina, sintasan, dan pertumbuhan larva ikan betok. Bahan uji pada peneliti-an ini adalah larva usia tujuh hari yang didapatkan dari hasil pemijahan induk dengan penyuntikan secara semi alami. Tempat pemeliharaan larva dilakukan di panti benih. Penentuan nisbah kelamin larva ikan dilakukan di laboratorium biologi dan pengamatan air diuji di Laboratorium Kimia Fakultas Pertanian Universitas Muhammadiyah Palembang dari bulan Maret sampai bulan Mei 2016. Perlakuan uji dilakukan dengan perendaman larva pada media, yaitu susu sapi (P1), susu kedelai (P2), dan campuran keduanya (P3). Masing-masing perlakuan direndam selama 10 jam dengan dosis perlakuan sebesar 2ml L-1 dan larva sebanyak 50 ekor L-1direndam pada stoples ukuran 10 liter. Setelah proses peren-daman, larva dipelihara dalam akuarium ukuran 30x30x30 cm3 selama 60 hari untuk diamati nisbah kelamin dan tingkat pertumbuhannya. Metode sampling yang digunakan adalah pengambilan sampel secara acak. Sampling pada ikan uji dan air diamati setiap 10 hari sekali dengan jumlah sampling sebanyak 40% pada ikan. Hasil penelitian menunjukkan perlakuan perendaman dengan larutan susu sapi adalah yang tertinggi, sintasan larva ikan betok sebesar 61,11%, per-tumbuhan panjang sebesar 3,77 cm, pertumbuhan bobot sebesar 1,69 g, dan nisbah kelamin betina sebesar 77,78% .
Estimates of genetic distance, combining ability and heterosis for body weight of cross four populations of giant gourami, Osphronemus goramy Lacepede 1801 Sularto Sularto; Rita Febrianti; Suharyanto Suharyanto
Jurnal Iktiologi Indonesia Vol 17 No 2 (2017): June 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i2.353

Abstract

The superior giant gourami can be obtained through hybridization. The purpose of this study was to estimate the genetic distance, combined ability, and crossbreeding heterosis at the age of eleven months from the four gourami populations: Kalimantan, Jambi, Majalengka, and Tasikmalaya. The study was conducted at the Research Institute for Fish Breeding Sukamandi. Genetic distance calculations were done by truss morphometric characterization with a sample of each of crossbred many as 30 individuals with the standard length range 3.5 - 12.2 cm. The data was analyzed using discrimi-nant analysis and continued with "cluster procedure" to get a dendrogram using SAS program 6:03. Heterosis was cal-culated based on the performance of the hybrid compared to the average performance parent each pair consisting of one male and two females. The results of this study showed that the four populations of giant gourami have different genetic distances. Giant gourami population from Borneo have the farthest genetic distance compared with the three other populations, whereas giant gourami from Jambi and from Majalengka has a close genetic distance. Jambi population shows the highest general combining ability with a positive value 21.82 g. The highest value of specific combining ability is obtained from a cross between the Majalengka female with the Jambi male with a positive value 75.30 g. The crosses also has the highest heterosis value that was equal to 41.78%, follows by a cross between the Tasikmalaya fe-male with the Jambi males (30.1%) and a cross between the Borneo females with the Jambi males (22.35%). The three crosses prospectively to produce superior hybrid of giant gourami. Abstrak Hibridisasi merupakan salah satu cara untuk mendapatkan ikan gurami unggul. Penelitian ini bertujuan untuk mengesti-masi jarak genetik empat populasi ikan gurami, yakni : Kalimantan, Jambi, Majalengka, dan Tasikmalaya, serta meng-hitung daya gabung gen serta heterosis persilangannya pada umur 11 bulan. Penelitian dilakukan di Balai Penelitian Pemuliaan Ikan Sukamandi. Perhitungan jarak genetik dilakukan berdasarkan karakterisasi truss morfometrik dengan jumlah sampel masing-masing hasil persilangan sebanyak 30 ekor dengan kisaran panjang baku 3,5 – 12,2 cm. Data dianalisis dengan analisis diskriminan dan dilanjutkan dengan “cluster procedure” untuk mendapatkan dendrogram menggunakan program SAS 6.03. Heterosis dihitung berdasarkan performa hibrida dibandingkan performa rata-rata induk tetuanya masing-masing pasangan induk terdiri atas 1 jantan dan 2 betina. Hasil penelitian ini menunjukkan bahwa keempat populasi ikan gurami mempunyai jarak genetik yang berbeda. Populasi gurami asal Kalimantan mem-punyai jarak genetik terjauh dibandingkan dengan ketiga populasi lainnya, sedangkan ikan gurami asal Jambi dan asal Majalengka memiliki jarak genetik yang dekat. Populasi Jambi menunjukkan daya gabung umum tertinggi dengan nilai positif 21,82 g. Nilai daya gabung spesifik tertinggi didapatkan dari persilangan antara betina Majalengka dengan jantan Jambi dengan nilai positif 75,30 g. Persilangan tersebut juga memiliki nilai heterosis tertinggi yaitu sebesar 41,78%, selanjutnya diikuti persilangan betina Tasikmalaya dengan jantan Jambi sebesar 30,1% dan persilangan betina Kaliman-tan dengan jantan Jambi sebesar 22,35%. Ketiga persilangan tersebut prospektif untuk dijadikan ikan gurami hibrida unggulan.

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