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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 8 Documents
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Search results for , issue "Vol 20 No 3 (2020): October 2020" : 8 Documents clear
The honey solution effect as a natural cryoprotectant on sperm quality of botia, Chromobotia macracanthus Bleeker 1852 Abinawanto Abinawanto; Siti Z Musthofa; Retno Lestari; Anom Bowolaksono
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.528

Abstract

The purpose of study was to obtain the best combination of natural cryoprotectant (honey solution) and synthetic cryoprotectant (methanol) on the quality of spermatozoa Chromobotia macracanthus Bleeker 1852, after freezing at -80 ℃ for 48 hours. The combination of 10% methanol with various concentrations of honey solution (0%, 0.1%, 0.3%, 0.5%, 0.7% and 0.9%) was tested in this study. Ringer's solution was used as an extender. The diluted sperm was then equilibrated for 25 minutes at 4 ℃, then frozen at -80 ℃ for 48 hours. The sperm was then thawed at 40 ℃ for 13 seconds. Viability, motility and percentage of fertilization were evaluated. The results of the analysis of variance showed that the combination of 10% methanol with several concentrations of honey solution had a significant effect (P <0.05) on the viability of spermatozoa and the percentage of fertilization, but had no effect on sperm motility (P> 0.05). The combination of 0.1% honey solution and 10% methanol showed the highest percentage of both motility (89.4 ± 5.45%), viability (85.75 ± 4.79%), and the percentage of fertilization (98.55 ± 1.69%). %). The conclusion of this study is that 0.1% honey solution combined with 10% methanol in Ringer's solution is the best cryoprotectant for C. macracanthus spermatozoa stored at -80 ℃ for 48 hours. Abstrak Penelitian ini bertujuan untuk mendapatkan kombinasi terbaik antara krioprotektan alami (larutan madu) dan krioprotektan sintetik (metanol) terhadap kualitas spermatozoa Chromobotia macracanthus Bleeker 1852, pasca penyimpanan pada suhu -80 ℃ selama 48 jam. Kombinasi metanol 10% dengan berbagai konsentrasi larutan madu (0%, 0,1%, 0,3%, 0,5%, 0,7% dan 0,9%) diuji dalam penelitian ini. Larutan Ringer digunakan sebagai ekstender. Sperma yang telah diencerkan, kemudian diekuiliberasi selama 25 menit pada suhu 4 ℃, kemudian disimpan beku pada suhu -80 ℃ selama 48 jam. Sperma kemudian dicairkan pada suhu 40 ℃ selama 13 detik. Viabilitas, motilitas dan persentase fertilisasi dievaluasi. Hasil uji analisis sidik ragam menunjukkan bahwa kombinasi metanol 10% dengan beberapa konsentrasi larutan madu berpengaruh secara signifikan (P<0,05) terhadap viabilitas spermatozoa dan persentase fertilisasi, tapi tidak berpengaruh terhadap motilitas spermatozoa (P>0,05). Kombinasi larutan madu 0,1% dan metanol 10% menunjukkan persentase tertinggi baik motilitas (89,4 ± 5,45%), viabilitas (85,75 ± 4,79%), maupun persentase fertilisasi (98,55 ± 1,69%). Kesimpulan penelitian ini adalah bahwa larutan madu 0,1% yang dikombinasikan dengan metanol 10% dalam larutan Ringer merupakan krioprotektan terbaik bagi spermatozoa C. macracanthus yang disimpan pada suhu -80 ℃ selama 48 jam.
Some reproductive biology aspects of bonylip barb (Osteochilus vittatus Valenciennes, 1842) in the waters of Benanga Reservoir, East Kalimantan Jusmaldi Jusmaldi; Nova Hariani; Medi Hendra; Nikmahtulhaniah Ayu Wulandari; Sarah Sarah
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.529

Abstract

Bonylip barb (Osteochilus vittatus Valenciennes, 1842) that belongs to the Cyprinidae family is one of the native freshwater fishes in Indonesian waters. Currently, status of this species in Benanga Reservoir, East Kalimantan is in over-exploited. Fish resources management, therefore, is needed to maintained fish stock in the reservoir based on fish reproductive biology aspects. The purpose of this study was to analyze some aspects of the reproductive biology including sex-ratio, gonad maturity, length at first gonad maturity, spawning season, fecundity, and spawning patterns as basic information for its management. Fish collection was carried out monthly on the third week from January to May 2019 at three stations. The fish samples were captured by using experimental gill nets with mesh size of 1; 1.5; 2; and 3 inches. A total of 278 bonylip barb was caught, consist of 92 males and 186 females. Sex ratio of male and female in the gonad mature stage was 1: 2.4. The average length at first gonad maturity in male and female were 136.08 mm and 137.38 mm, respectively. Peak of spawning occurs during the rainy season in May, with more than 90% of fish in mature stage with GSI in male and female were 6.88%, 13.16% respectively. Total fecundity ranged from 7312-22923 eggs individual-1 and egg diameter ranged from 0.6-1.94 mm. According to distribution of egg diameter, bonylip barb was categoried as a total spawner. Some management strategies that can be carried out are using fishing gears with mesh size above 2 inches, limiting fishing activities in the peak of the spawning season, prohibiting fishing gear using electric shocker and protection the reservoir from erosion. Abstrak Ikan nilem (Osteochilus vittatus Valenciennes, 1842) merupakan jenis ikan air tawar famili Cyprinidae asli perairan Indonesia. Saat ini, ikan nilem di perairan Waduk Benanga Kalimantan timur telah diekploitasi lebih. Karena itu diperlukan pengelolaan di alam agar stok ikan tersebut tetap terjaga; dengan melakukan kajian aspek biologi repro-duksi. Tujuan penelitian ini adalah menganalisis aspek biologi reproduksi mencakup nisbah kelamin, kematangan gonad berkaitan dengan musim, ukuran ikan kali pertama matang gonad, musim pemijahan, fekunditas dan tipe pemijahan sebagai informasi dasar dalam pengelolaannya. Penangkapan ikan dilakukan selama 5 bulan, dari Januari hingga Mei 2019 dan dilaksanakan pada minggu ketiga setiap bulannya di tiga stasiun. Contoh ikan ditangkap dengan menggunakan jaring insang eksperimental berukuran mata jaring 1; 1,5; 2; dan 3 inci. Jumlah total ikan nilem yang tertangkap 278 ekor terdiri atas 92 jantan dan 186 betina. Nisbah kelamin ikan jantan dan betina pada tahap matang gonad 1: 2,4. Panjang kali pertama matang gonad pada jantan rata-rata 136,08 mm dan betina rata-rata 137,38 mm. Puncak pemijahan terjadi saat musim penghujan di bulan Mei dengan nilai persentase TKG IV >90%, IKG jantan 6,88% dan IKG betina 13,16%. Fekunditas total berkisar 7312-22.923 butir individu-1 dan diameter telur berkisar 0,6-1,94 mm. Sebaran diameter telur menunjukkan pola pemijahan serempak. Strategi pengelolaan yang disarankan adalah penggunaan ukuran mata jaring di atas 2 inci, pembatasan penangkapan ikan pada puncak pemijahan pada bulan Mei, pelarangan alat tangkap menggunakan listrik dan perlindungan Waduk Benanga dari erosi
Comparative osteology of Tor tambroides (Bleeker, 1854) and Tor tambra (Valenciennes 1842) vertebral column (ossa vertebrae) Ilham Zulfahmi; Yusrizal Akmal; Muhammad Radhi; Muslich Hidayat; Muliari Muliari
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.530

Abstract

Information related to osteology plays a vital role in support ecomorphology and phylogenetic relationship analysis in fish. This study aimed to describe the comparative morphology of the vertebral column between Tor tambroides (Bleeker, 1854) and Tor tambra (Valenciennes 1842). Samples of Tor tambroides and Tor tambra were obtained from fish traders in the Tangse River area of Pidie Regency and Sampoinet River area, Aceh Jaya Regency, Aceh Province. Vertebral column preparation consists of five steps: muscles and scales separation, immersion in a formaldehyde solution, drying, morphometric measurements, photographing and image editing, and identification of terminology. The results showed that there are morphological differences between Tor tambroides and Tor tambra vertebral column, particularly in the axial vertebrae, posterior vertebrae caudales, and urostylus regions. The pleural costae of Tor tambroides have a posterior curve with the left and right sides interlocking. The lateral Tor tambroides process tends to curve posteriorly, while the Tor tambra tends to round up parallel to the dorsal costae. Tor tambroides tend to have stronger ligaments marked by the absence of a foramen between the hypural. Morphometrically, Tor tambroides tend to have higher centrum ratios (length, width, and height), neural spine, haemalis spine, and costae compared to Tor tambra. The significant difference in morphometric results in observed the axial vertebrae and the posterior vertebrae caudales region. Further research related to the correlation of vertebral column morphology with the environmental condition of these fish is still necessary. Abstrak Kajian osteologi memiliki peran penting dalam upaya analisis ekomorfologi dan hubungan filogenetik antarjenis ikan. Penelitian ini bertujuan untuk mendeskrispsikan perbedaan morfologi tulang belakang Tor tambroides (Bleeker, 1854) dan Tor tambra (Valenciennes 1842). Contoh ikan Tor tambroides dan Tor tambra dikoleksi dari hasil tangkapan nelayan di wilayah Sungai Tangse Kabupaten Pidie dan wilayah Sungai Sampoinet, Kabupaten Aceh Jaya, Provinsi Aceh. Tahapan preparasi tulang belakang terdiri atas lima tahapan yaitu pemisahan otot dan sisik, perendaman dalam larutan formalin, penjemuran, pengukuran morfometrik, pemotretan dan penyuntingan gambar, serta identifikasi terminologi. Hasil penelitian ini menunjukkkan bahwa terdapat perbedaan morfologi tulang belakang antara Tor tambroides dan Tor tambra terutama pada bagian axial vertebrae, posterior vertebrae caudales dan urostylus. Tulang pleura costae Tor tambroides memiliki bentuk melengkung ke arah posterior dengan bagian kiri dan kanan saling bertautan. Processus lateralis Tor tambroides cenderung melengkung ke arah posterior, sedangkan pada Tor tambra cenderung membulat sejajar dengan dorsal costae. Tor tambroides cenderung memiliki ligamen yang lebih kokoh ditandai dengan tidak adanya foramen diantara os hypural. Secara morfometrik tulang belakang, Tor tambroides cenderung memiliki nilai nisbah centrum (panjang, lebar dan tinggi), spina neuralis, spina haemalis dan costae yang lebih tinggi dibandingkan dengan Tor tambra. Disparitas hasil pengukuran antara kedua jenis ikan terlihat cukup kentara pada bagian axial vertebrae dan bagian posterior vertebrae caudales. Penelitian lanjutan terkait korelasi morfologi tulang belakang dengan kondisi perairan kedua jenis ikan masih perlu dilakukan.
Biological parameters of Bonylip barb (Osteochilus vittatus Valenciennes, 1842) in Lake Rawa Pening Semarang Regency Sadza Maulidyasari; Djumanto Djumanto
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.531

Abstract

Bonylip barb (Osteochilus vittatus Valenciennes, 1842) is an indigenous fish which is the main target of fishermen in lake Rawa Pening. This study aims to determine the biological parameters including length-weight relationship, con-dition factor, and sex ratio of bonylip barb in lake Rawa Pening, Semarang Regency. Fish sampling was conducted biweekly from October 2019 to March 2020, caught using bamboo blinds operated by local fishermen. Data collected consisted of total length, individual weight, and sex. Data on the length-weight relationship and condition factors were analyzed descriptively, while the sex ratio was analyzed with the chi-square test (χ2). The results showed that female bonylip barb was obtained as many as 392 individuals with a length-range between 10.0-26.0 cm and a weight range between 14.5-264.1 g. The male counted 255 individuals with a length range of 10.2-22.4 cm and a weight range of 15.0-160.9 g. The growth pattern was allometric negative. The equation of the length-weight relationship of female was W = 0.0186 L 2.9096 (R² = 0.9527), and the male was W = 0.0151 L 2.9689 (R² = 0.9386). The value of the average condition factor of females was 1.05, and the males was 1.02. The condition factor in females was in excellent condition (> 1.05), and males were in good condition (0.95-1.05). The overall sex ratio of male and female was 1:1.54. It means that females population was significantly higher than males. Abstrak Ikan nilem (Osteochilus vittatus Valenciennes, 1842) merupakan ikan asli yang menjadi target utama tangkapan nela-yan di Rawa Pening. Penelitian ini bertujuan untuk mengetahui parameter biologi yang meliputi hubungan panjang-berat, faktor kondisi dan nisbah kelamin ikan nilem di danau Rawa Pening Kabupaten Semarang. Pengambilan sampel ikan dilakukan dua minggu sekali dari bulan Oktober 2019 sampai Maret 2020, menggunakan kerai bambu yang dioperasikan oleh nelayan setempat. Data yang dikumpulkan terdiri atas panjang total, bobot individu, dan jenis kelamin. Data hubungan panjang-berat dan faktor kondisi dianalisis secara deskriptif, sedangkan nisbah kelamin dianalisis dengan uji chi-square (χ2). Hasil penelitian diperoleh jumlah ikan nilem betina sebanyak 392 ekor dengan kisaran panjang antara 10,0-26,0 cm dan kisaran berat antara 14,5-264,1 g. Ikan nilem jantan sebanyak 255 ekor dengan kisaran panjang antara 10,2-22,4 cm dan kisaran berat antara 15,0-160,9 g. Pola pertumbuhan ikan nilem di danau Rawa Pening bersifat allometri negatif. Persamaan hubungan panjang-berat ikan nilem betina yaitu W = 0.0186L2.9096 (R² = 0.9527), dan jantan yaitu W = 0.0151 L2.9689(R² = 0.9386). Nilai faktor kondisi ikan nilem betina rerata 1,05, sedangkan ikan nilem jantan rerata 1,02. Proporsi faktor kondisi ikan nilem betina terbanyak dalam keadaan sangat baik (>1,05), sedangkan ikan nilem jantan berada dalam kondisi baik (0,95-1,05). Rasio betina dan jantan secara keseluruhan yaitu 1,54 : 1, yang menunjukkan populasi betina secara nyata lebih banyak dari pada jantan.
Length-weight relationship and condition factor of an endemic Lagusia micracanthus Bleeker, 1860 in Rivers of the Maros Watershed Muhammad Nur; M. Fadjar Rahardjo; Charles P.H Simanjuntak; Djumanto Djumanto; Krismono Krismono
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.532

Abstract

Lagusia micracanthus is one of endemic freshwater fish in Sulawesi. It also has been locally consumed. The purpose of this research was to analyze length-weight relationship and condition factors of L. micracanthus in rivers of the Maros Watershed, South Sulawesi Province . The study was conducted in three rivers, namely Pattunuang River, Bantimurung River and Pucak River. The sampling was conducted monthly from May 2018 to April 2019. Fish samples were collected by an electric shocker (12 V and 9 A). A total of 1850 individual fishes with samples ranging from 31.58-127.79 mm in total length and 0.76-31.07 g in weight. The length-weight relationship was W = 0.00009L2.6241 (r = 0.95) in Pattunuang River, W = 0.0001L2.5237 (r = 0.94) in Bantimurung River, and W = 0.0001L2.4953 (r = 0.92) in Pucak River. The slope (b) values of L. micracanthus obtained a negative allometric growth pattern (b <3). The relative condition factors of L. micracanthus was fluctuated from 0.86 to 1.43 in Pattunuang River, 0.65 to 1.45 in Bantimurung River, and 0.55 to 1.26 in Pucak River. The condition factor increased towards the peak of the spawning season and decreased after the spawning period. The condition factor increased with the increasing of gonad maturity stage up to stage IV and decreased after spawned or stage V. Abstrak Lagusia micracanthus merupakan salah satu ikan endemik air tawar Sulawesi.Ikan ini telah lama dimanfaatkan masyarakat lokal sebagai ikan konsumsi. Penelitian ini bertujuan menganalisis hubungan panjang-bobot dan faktor kondisi L. micracanthus di sungai-sungai pada Daerah Aliran Sungai Maros, Provinsi Sulawesi Selatan. Penelitian dilakukan di tiga Sungai yaitu Sungai Pattunuang, Sungai Bantimurung dan Sungai Pucak. Pengambilan ikan contoh dilakukan setiap bulan dari Mei 2018 hingga April 2019. Penangkapan ikan contoh menggunakan alat tangkap electric shocker (12 V & 9 A). Total ikan yang tertangkap sebanyak 1850 ekor dengan panjang berkisar 31,58-127,79 mm dan bobot 0,76-31,07 g. Hasil penelitian menunjukkan, hubungan panjang bobot L. micracanthus di Sungai Pattunuang adalah W = 0,00009L2,6241 (r = 0,95), Sungai Bantimurung W= 0,0001L2,5237 (r = 0,94) dan Sungai Pucak W = 0,0001L2,4953 (r = 0,92). Berdasarkan nilai b yang diperoleh L. micracanthus tergolong ke dalam tipe pertumbuhan allometrik negatif (b < 3). Nilai faktor kondisi ikan pirik berfluktuasi. Di Sungai Pattunuang nilai faktor kondisi berkisar antara 0,55-1,26, di Sungai Bantimurung berkisar 0,65-1,45 dan di Sungai Pucak berkisar 0,55-1,26. Faktor kondisi meningkat menjelang puncak musim pemijahan dan menurun setelah masa pemijahan. Faktor kondisi meningkat seiring peningkatan tingkat kematangan gonad sampai pada TKG IV dan menurun setelah ikan berpijah atau pada TKG V.
Growth performance and survival rate of catfish (Pangasianodon hypophthalmus) juvenile which is reared in recirculation system Yuke Eliyani; Iin Siti Djunaidah; Sujono Sujono
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.533

Abstract

Although recirculation is a cultivation system that has been tried in various commodities, but the effectiveness of this system to the growth and survival of catfish juvenile has not been done. This study aims to determine the effective-ness of recirculation system on growth performance and survival rate of catfish juvenile (Pangasianodon hypophthal-mus). The research was conducted from 11 October to 30 November 2019 at hatchery unit Department of Fisheries Extension, Jakarta Technical University of Fisheries. This study used experimental method with 3 treatments, namely Control (K: 100% Bioball + Bacillus sp.), Treatment 1 (P1: 50% Bioball + 25% zeolite + 25% resin + Bacillus sp.) and Treatment 2 (P2: Bioball 25 % + zeolit 50% + resin 25% + Bacteria Bacillus sp.). The catfish used in this study was measured 0.08 + 0.02 g. Ind.-1. The fish were kept in a concrete tub of 100 cm x 150 cm x 70 cm with water volume of 750 liters tub-1. Stocking density of fish was 5 fish liters-1. Fish juveniles were fed with commercial feed with a dose of 3% of fish biomass with frequency of 3 times a day-1. Observation fish growth and water sampling for monitoring of the abundance of nitrogen-decomposing bacteria and water quality were carried out every 15 days. The results showed that the highest growth weight of catfish seedlings was found in treatment P1 (0.447±0.142b) compared with K (0.377±0.047a) and P2 (0.363±0.057a) treatment. The values of survival rate for K, P1 and P2 treatments were 51±8, 54±4 and 52±8, respectively. This result implies that no significant difference in the survival rates in all treatments. Abstrak Resirkulasi merupakan salah satu sistem budi daya yang telah dicobakan pada berbagai komoditas, namun bagai-mana efektifitasnya terhadap pertumbuhan dan sintasan yuwana ikan patin belum dilakukan. Penelitian ini bertujuan untuk menganalisis pengaruh efektifitas sistem resirkulasi terhadap kinerja pertumbuhan dan sintasan yuwana patin (Pangasianodon hypophthalmus). Penelitian dilaksanakan dari tanggal 11 Oktober sampai 30 November 2019 di panti pembenihan Program Studi Penyuluhan Perikanan, Politeknik Ahli Usaha Perikanan. Penelitian menggunakan metode eksperimental dengan 3 perlakuan yaitu Kontrol (K: Bioball 100% + Bakteri Bacillus sp), Perlakuan 1 (P1: Bioball 50% + zeolit 25%+resin 25% + Bakteri Bacillus sp) dan Perlakuan 2 (P2: Bioball 25% + zeolit 50%+ resin 25% + Bakteria Bacillus sp). Ikan yang digunakan adalah yuwana patin berukuran 0,08+0,02 g ekor-1. Ikan dipelihara pada bak beton berukuran 100 cm x 150 cm x 70 cm dengan volume air 750 liter/bak. Padat tebar ikan adalah 5 ekor liter-1. Pakan yang digunakan adalah pakan komersial, dosis 3% biomassa dan frekuensi 3 kali hari-1. Pengamatan pertumbuhan sampel ikan dan pengambilan sampel air untuk kelimpahan bakteri pengurai nitrogen serta kualitas air dilakukan setiap 15 hari. Hasil penelitian menunjukkan bahwa pertumbuhan bobot yuwana ikan patin tertinggi berada pada P1 (0,447± 0,142b) dibandingkan dengan K (0,377±0,047a) dan P2 (0,363±0,057a). Nilai sintasan pada perlakuan K, P1 dan P2 berturut-turut 51±8%, 54±4% dan 52±8%. Hasil ini menunjukkan bahwa tidak ada perbedaan yang nyata dari nilai sintasan pada semua perlakuan.
The color quality of Sumatra barb Puntigrus tetrazona (Bleeker, 1855) in different light spectrum exposure Wijianto Wijianto; Kukuh Nirmala; Yuni Puji Hastuti; Eddy Supriyono
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.534

Abstract

The color quality of Sumatra barb that cultivated by the farmers are not as good as the fish that collected from the wild. One of the causes is the unsuitable environment for maintaining and breeding Sumatran barb. This research aims to compare color quality of Sumatra barb Puntigrus tetrazona by exposure the different light spectrums on maintenance media. The experiment was completely randomize design with six treatments and three replications consisted of K (control), R (room light), M (red light spectrum), H (green light spectrum), B (blue light spectrum) and P (white light spectrum). The method used to measure Sumatra barb color quality using Photoshop CS 5 software and chromatophore cell calculations. The results of color quality analysis after 28 showed that the (M) treatment had the highest percentage of color quality was 48.81 ± 1.57% for orange color and 32.26 ± 0.07% for black color. The highest number of chromatophore cells was in M treatment with 147 ± 3.7 cells mm-². The red light spectrum (M) treatment showed the best physiological response and improvement of color quality and the glucose level was 23.00 ± 1.00 mg dL−1. The best color quality of the Sumatra barb is produced by exposure to the red light spectrum (M). Abstrak Ikan sumatra hasil budi daya petani belum mencapai kualitas warna yang cukup baik dibandingkan hasil tangkapan di alam. Salah satu penyebabnya adalah lingkungan pemeliharaan serta penangkaran ikan sumatra yang tidak sesuai. Penelitian ini bertujuan untuk mengevaluasi kualitas warna ikan sumatra Puntigrus tetrazona dengan paparan spek-trum cahaya berbeda pada media pemeliharaan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri atas enam perlakuan dan tiga ulangan yaitu kontrol (K), cahaya ruang (R), spektrum cahaya merah (M), spek-trum cahaya putih (P), spektrum cahaya biru (B), dan spektrum cahaya hijau (H). Metode yang digunakan untuk mengukur kualitas warna ikan sumatra yaitu perangkat lunak Photoshop CS 5 dan perhitungan sel kromatofora. Hasil analisis kualitas warna setelah 28 hari menggunakan perangkat lunak Photoshop CS5 menunjukkan perlakuan spek-trum cahaya merah (M) memiliki kualitas warna terbaik dengan persentase sebesar 48,81±1,57% untuk warna jingga dan 32,26±0,07% untuk warna hitam. Jumlah sel kromatofora tertinggi yaitu pada perlakuan spektrum cahaya merah (M) yaitu sebesar 147,3±3,7 sel mm-2. Spektrum cahaya merah (M) menunjukkan respons fisiologis dan peningkatan kualitas warna yang terbaik. Kadar glukosa pada perlakuan spektrum cahaya merah (M) yaitu sebesar 23,00±1,00 mg dL-1. Kualitas warna ikan sumatra Puntigrus tetrazona terbaik dihasilkan oleh paparan spektrum cahaya merah (M).
Digestive system and growth performance of African catfish larvae Clarias gariepinus, (Burchell, 1822) maintained with biofloc technology with the addition of Chlorella sp. Sujaka Nugraha; Julie Ekasari; M Zairin Junior; Widanarni Widanarni
Jurnal Iktiologi Indonesia Vol 20 No 3 (2020): October 2020
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v20i3.535

Abstract

The production of catfish in aquaculture is still limited by the low supply of good quality seeds. One solution that can be done to overcome this problem is by the application of biofloc technology with microalgae addition. This study aims to evaluate the performance of digestive system, growth and robustness of the African catfish larvae maintained with biofloc technology and the addition of Chlorella sp. This research applied a completely randomized experimental design consisted of three treatments and triplicates, i.e larvae maintained with regular water exchange as the control (K), larvae maintained biofloc system (BF) and larvae reared with biofloc treatment and Chlorella sp. addition (BFC) with a rearing period of 15 days. Length growth, specific growth rate, condition factor, the activity of protease, amylase and lipase were not significantly different between treatments (P>0.05). The villi length in fish maintained in BF treatmen (136μm), was higher than those of BFC (121μm) and K treatments (105μm). The particle size of floc in BF and BFC were 0.44±0.025 and BFC 0.79±0.048 mm, respectively. The survival of catfish larvae in the BFC treatment was (51 ± 0,32)b, which was significantly higher (P<0.05) than those of K (45±0.52)a and BF (45±0.15)a. The results of stress test using 15 g L-1 water salinity demonstrated that the fish maintained in BFC has a higher survival (63%) than those of BF (47%) and K (43%). Overall results of the present study showed that the addition of Chlorella sp. could improve the growth performance and robustness of African catfish larvae against salinity stress. Abstrak Produksi ikan lele dalam budidaya masih dibatasi oleh rendahnya pasokan benih yang berkualitas baik, karena permasalahan ketersediaan nutrisi yang berkualitas selama pemeliharaan larva. Salah satu solusi meningkatkan ketersediaan dan kualitas larva adalah dengan menggunakan teknologi bioflok serta penambahan Chlorella sp. Penelitian ini bertujuan untuk mengevaluasi kinerja sistem pencernaan, pertumbuhan dan ketahanan larva ikan lele yang dipelihara pada sistem bioflok dengan penambahan Chlorella sp. Penelitian ini menggunakan rancangan acak lengkap yang terdiri atas tiga perlakuan dan tiga ulangan, yaitu larva yang dipelihara dengan penggantian air sebagai perlakuan kontrol (K), larva yang dipelihara dengan sistem bioflok (BF), dan larva yang dipelihara dengan perlakuan bioflok dengan penambahan Chlorella sp. (BFC) dengan lama pemeliharaan selama 15 hari. Hasil penelitian ini menunjukkan bahwa pertumbuhan panjang, laju pertumbuhan spesifik, faktor kondisi, aktivitas protease, amilase, dan lipase antar perlakuan tidak berbeda nyata antarperlakuan (P>0,05). Vili larva ikan lele pada perlakuan BF (136 μm) lebih panjang daripada BFC (121μm) dan K (105μm). Ukuran partikel bioflok pada media BF (0,44 ± 0,025 mm) lebih rendah daripada bioflok yang terdapat pada media BFC (0,79 ± 0,048 mm). Tingkat sintasan larva ikan lele pada perlakuan BFC mencapai 51 ± 0,32% lebih tinggi (P<0,05) daripada perlakuan K sebesar 45 ± 0,52% dan BF sebesar 45 ± 0,15%. Hasil uji stres salinitas pada larva ikan lele menunjukkan bahwa larva yang dipelihara dalam media BFC memiliki tingkat sintasan tertinggi (63 ± 3,33%) dibandingkan perlakuan lainnya (P<0.05). Hasil penelitian ini menunjukkan bahwa penambahan Chlorella sp. dapat meningkatkan kinerja pertumbuhan dan ketahanan larva lele terhadap uji stres menggunakan salinitas.

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