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Juvenil: Jurnal Ilmiah Kelautan dan Perikanan
Published by Universitas Trunojoyo Madura
ISSN : -     EISSN : 27237583     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science
Juvenil: Journal of Marine and Fisheries Sciences, is a scientific journal in the field of marine and fisheries science published electronically and periodically four times a year by the Department of Marine Affairs and Fisheries, Trunojoyo University, Madura. This journal aim to become a medium of dissemination of high quality research and scientific note in the fiend of marine and fisheries. This journal can be accessed and downloaded freely for everyone. The article published in this journal have been pass the rigorious peer review by the expert reviewer. This journal accept every article that contain the following, but not limited to, scope: Juvenil: Journal of Marine and Fisheries Sciences, is a scientific journal in the field of marine and fisheries science published electronically and periodically four times a year by the Department of Marine Affairs and Fisheries, Trunojoyo University, Madura. This journal is expected to function as a medium for the dissemination of quality scientific research results as well as scientific rebuttal (notes) in the marine and fisheries sector which can be accessed online and free of charge by the Indonesian community and the international community. The articles (articles) published in this journal are articles that have passed peer-review (partner bebestari). This journal accepts every article which contains, but is not limited to, the scope: 1. Ecology and biology of marine and fisheries 2. Marine and Aquaculture 3. Marine and Aquatic Conservation 4. Marine Water Pollution 5. Management of marine and aquatic resources 6. Marine and fishery processing technology
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 9 Documents
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Search results for , issue "Vol 6, No 1: Februari (2025)" : 9 Documents clear
Perkembangan Fase Embrionik Hingga Tahap Awwal Larva Ikan Kerapu Bebek (Cromileptes altivelis) di BBIL Pulau Tidung, Kepulauan Seribu, DKI Jakarta Karunia Divanda Laksana; Larasati Putri Hapsari; Hary Krettiawan
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.25866

Abstract

ABSTRAKFase embrionik merupakan salah satu fase yang cukup krusial didalam siklus perkembangan ikan kerapu bebek. Kerapu bebek termasuk dalam kategori spesies laut yang cukup memiliki nilai jual tinggi. Hal tersebut menjadikan pengamatan dalam setiap perkembangan ikan kerapu bebek sangat penting, agar perkembangan tersebut tercatat dengan baik. Penelitian ini bertujuan untuk mengamati perkembangan embrio hingga tahap awal larva dan mengidentifikasi faktor keberhasilan setiap fasenya. Penelitian ini dimulai pada bulan Agustus – September 2023 di Laboratorium Balai Benih Ikan Laut (BBIL) Pulau Tidung, Kepulauan Seribu, DKI Jakarta. Pengamatan ini menggunakan telur ikan kerapu bebek, dan larva ikan kerapu bebek. Metode yang digunakan pada penilitian ini adalah metode survei. Hasil penelitiahan ini menunjukkan bahwa, fase perkembangan embrio hingga tahap awal larva meliputi, fase pembelahan (cleavage) (145 menit), morula (25 menit) , blastula (20 menit) , gastrula (180 menit), neurula (240 menit), dan hingga menetas setelah 17 jam pasca ovulasi. Sedangkan pada tahap awal larva ikan kerapu bebek, fase yang dilalui adalah, fase yolk sac, fase prefleksion, fase fleksion, fase pasca fleksion yang memerlukan waktu 35 hari. Tingkat keberhasilan fase embrionik hingga tahap awal larva ikan kerapu bebek dipengaruhi oleh beberapa faktor antara lain, seperti fekunditas, fertilization karena akan mempengaruhi jumlah telur yang berhasil menetas dari awal proses ovulasi. Sedangkan tingakat kelangsungan hidup akan mempengaruhi jumlah larva yang berhasil bertahan hidup hingga fase awal larva (fase pasca fleksion). Hasil perhitungan fekunditas sejumlah 184,615 butir/kg, tingkat pembuahan (FR) 75%, pada ikan kerapu bebek cukup baik, sedangkan tingkat penetasan (HR) 33%, dan tingkat kelangsungan hidup (SR) 37%, tidak terlalu baik dikarenakan oleh beberapa factor yakni, dari segi pemberian pakan, monitoring kualitas air, serta penangulangan hama dan penyakitKata Kunci: Kerapu Bebek, Fase Embrionik, Larva, Kelangsungan HidupABSTRACTThe embryonic phase is one of the crucial phases in the development cycle of humpback grouper. Humpback grouper belongs to the category of marine species that have quite a high selling value. This makes observation in every development of Humpback grouper very important, so that the development is well recorded. Therefore, this study aims to observe embryonic development up to the early stages of larvae and identify success factors for each phase. This research starts in August – September 2023 at the Laboratory of the Marine Fish Seed Center (BBIL) Tidung Island, Thousand Islands, DKI Jakarta. This observation used humpback grouper eggs, and humpback grouper larvae. The method used in this study is the survey method. The results of this study showed that, the phase of embryonic development to the early larval stage includes, cleavage phase (145 minutes), morula (25 minutes), blastula (20 minutes), gastrula (180 minutes), neurula (240 minutes), and until hatching after 17 hours post-ovulation. While in the early stages of humpback grouper larvae, the phases passed are, yolk sac phase, preflection phase, flexion phase, post-flexion phase which takes 35 days. The success rate of the embryonic phase to the early stages of humpback grouper larvae is influenced by several factors, among others, such as fecundity, fertilization because it will affect the number of eggs that successfully hatch from the beginning of the ovulation process. While the survival rate will affect the number of larvae that successfully survive until the initial larval phase (post-flexion phase). The fecundity calculation results amounted to 184,615 eggs / kg, the fertilization rate (FR) was 75%, in humpback grouper was quite good, while the hatching rate (HR) was 33%, and the survival rate (SR) was 37%, not very good due to several factors, namely, in terms of feeding, monitoring water quality, and controlling pests and diseases.Keywords: Humpback grouper, Embryonic phase, Larvae, Survival Rate
Pengaruh Bakteri Probiotik Bacillus sp Dengan Pengenceran Yang Berbeda Terhadap Jumlah Koloni Tryptic Soy Agar (TSA) Di Tambak Udang Vannamei (Litopenaeus vannamei) Nurul Hayati; Didik Budiyanto; Lathifa Annastasya Dwi Adnandya
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.22916

Abstract

ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh bakteri probiotik terhadap jumlah koloni TSA, penelitian meliputi pembuatan media TSA dan isolasi bakteri air tambak. Media TSA ditimbang sebanyak 20 g dan ditambahkan KCL 0,375 g dan MgSO4 3,47 g , Nacl 9,2 g dan aquadest 500 ml, sterilisasi menggunakan autoclave pada suhu 121 derajat celcius selama 15 menit, inokulasi sampel air tambak dilakukan pengenceran menggunakan larutan Nafis (Natrium fisiologis) 0,9 ml dan sampel 0,1 ml bakteri probiotik bacillus 0,1 ml diencerkan pada cawan petri yang berisi media TSA di ratakan menggunakan pengaduk try angel lalu diinkubasi 24 jam, dan bakteri dapat dihitung jumlah koloninya. Semakin banyak diencerkan maka semakin banyak juga koloni yang tumbuh dan jumlahnya semakin banyak.Kata kunci: Jumlah koloni, Bakteri probiotik, TSA, Air tambak.ABSTRACTThis study aims to determine the effect of probiotic bacteria on the number of TSA colonies. Research includes the manufacture of TSA media and the isolation pf pond water bacteria. TSA media was weighed as much as 20 g and added 0,375 g, KCl and MgSO4 3,47 g , Nacl 9,2 g and 500 ml of distilled water, sterilized using an autoclave at 121ºC for 15 minutes. Inoculation of pond water samples was diluted using 0,9 ml of physiological sodium solution and a sample of 0,1 ml of probiotic bacteria Bacillus sp 0,1 ml was diluted in a petri dish containing TSA media, averaged using a try angel stirrer and then incubated for 24 hours. And bakteria, the number of colonies can be counted, the more they are diluted, the more colonies will grow and the number will increase.Keywords : Number of colonies, probiotic bakteria, TSA, Pond water.
Probiotik Dan Multivitamin Dalam Pakan Komersil Pada Pertumbuhan, Kelulushidupan Dan Rasio Konversi Pakan Ikan Gabus (Channa striata) Almaas Ahmad Hisyamumtazah; Nuhman Nuhman; Titiek Indira Agustin
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.27159

Abstract

ABSTRAKKeberhasilan budidaya sangat ditentukan oleh beberapa aspek, salah satunya adalah pakan. Pakan yang mempunyai nilai nutrisi yang baik akan memberikan pertumbuhan yang baik bagi ikan gabus (Channa striata). Penelitian ini bertujuan untuk mengetahui pengaruh pemberian probiotik dan multivitamin pada pakan komersil terhadap pertumbuhan berat mutlak, panjang mutlak, kelulushidupan dan rasio konversi pakan ikan gabus (Channa striata). Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL) yang terdiri atas 4 perlakuan dengan 4 kali pengulangan. Perlakuan yang diuji adalah yaitu Perlakuan K (pakan murni), Perlakuan P1 (probiotik EM4 10 ml/kg pakan), Perlakuan P2 (boster premix aquavita 4 gr/kg pakan), Perlakuan P3 (probiotik EM4 10 ml/kg pakan + boster premix aquavita 4 gr/kg pakan). Sampel yang digunakan adalah bibit ikan gabus berjumlah 160 ekor, dipelihara dalam 16 akuarium dengan kepadatan 10 ekor/20 L air selama 6 minggu. Data hasil penelitian dianalisa uji normalitas, homogenitas, Anova dan Uji BNT dengan menggunakan SPSS versi 25. Berdasarkan hasil penelitian didapatkan bahwa perlakuan P3 (pemberian probiotik EM4 + boster premix aquavita) merupakan perlakuan terbaik terhadap pertumbuhan berat mutlak dengan nilai 1.51 gr, panjang mutlak 2.6 cm dan rasio konversi pakan 1.47, diikuti perlakuan P2 (pemberian boster premix aquavita) dengan berat mutlak 1.29 gr, panjang mutlak 2.5 cm, dan rasio konversi pakan 1.66, selanjutnya perlakuan P1 (pemberian probiotik EM4) dengan berat mutlak 1.21 gr, panjang mutlak 2.2 cm, dan rasio konversi pakan 1.69, sedangkan perlakuan terendah adalah perlakuan kontrol dengan berat mutlak 0.98 gr, panjang mutlak 1.7 cm dan rasio konversi pakan 2.06. Hal ini menunjukkan bahwa Pemberian probiotik EM4, boster premix aquavita dan kombinasi probiotik EM4 + boster premix aquavita memberikan pengaruh yang signifikan terhadap pertumbuhan berat mutlak (gr), pertumbuhan panjang mutlak (cm) dan rasio konversi pakan (%) ikan gabus, namun tidak berpengaruh terhadap kelulushidupan ikan gabus.Kata kunci: Ikan gabus (Channa striata), Probiotik EM4, Boster Premix Aquavita, dan pakan komersilABSTRACTThe success of cultivation is determined by several aspects, one of which is feed. Feed that has good nutritional value will provide good growth for snakehead fish (Channa striata). This study aims to determine the effect of providing probiotics and multivitamins in commercial feed on the growth of absolute weight, absolute length, survival and feed conversion ratio of snakehead fish (Channa striata). This study used a Completely Randomized Design (CRD) method consisting of 4 treatments with 4 repetitions. The treatments tested were Treatment K (pure feed), Treatment P1 (EM4 probiotic 10 ml/kg feed), Treatment P2 (aquavita premix booster 4 gr/kg feed), Treatment P3 (EM4 probiotic 10 ml/kg feed + aquavita premix booster 4 gr/kg feed). The samples used were 160 snakehead fish seeds, kept in 16 aquariums with a density of 10 fish/30 liters of water for 6 weeks. The research data were analyzed using normality, homogeneity, Anova and BNT tests using SPSS version 25. Based on the research results, it was found that Treatment P3 (giving EM4 probiotics + aquavita premix booster) was the best treatment for absolute weight growth with a value of 1.51 gr, absolute length 2.6 cm and feed conversion ratio 1.47, followed by treatment P2 (giving aquavita premix booster) with an absolute weight of 1.29 gr, absolute length 2.5 cm, and feed conversion ratio 1.66, then treatment P1 (giving EM4 probiotics) with an absolute weight of 1.21 gr, absolute length 2.2 cm, and feed conversion ratio 1.69, while the lowest treatment was the control treatment with an absolute weight of 0.98 gr, absolute length 1.7 cm and feed conversion ratio 2.06. This shows that the administration of EM4 probiotics, Aquavita premix booster and a combination of EM4 probiotics + Aquavita premix booster has a significant effect on absolute weight growth (gr), absolute length growth (cm) and feed conversion ratio (%) of snakehead fish, but does not affect the survival of snakehead fish.Keywords: snakehead fish (Channa striata), EM4 probiotics, Aquavita premix booster and commercial feed
Pengaruh Pemberian Tepung Daun Pepaya (Carica papaya L) Pada Pakan Buatan Dengan Dosis Yang Berbeda Terhadap Pertumbuhan Berat Mutlak Ikan Gurami (Osphronemus gouramy) Rima Dara Lestari; Didik Budiyanto; Indra Wirawan
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.22523

Abstract

ABSTRAKTujuan peneletian ini untuk mengetahui pengaruh pemberian tepung daun pepaya (Carica papaya L) dengan dosis yang berbeda pada pakan buatan terhadap pertumbuhan berat mutlak ikan gurami (Osphronemus gouramy) dan untuk mengetahui penambahan dosis tepung daun pepaya pada pakan buatan terhadap pertumbuhan berat mutlak ikan gurami (Osphronemus gouramy). Penelitian ini menggunakan metode eksperimen Rancangan Acak Lengkap (RAL) dengan 5 perlakuan 5 ulangan. Perlakuan yang diuji penambahan daun pepaya (Carica papaya L) dengan dosis berbeda yaitu; 0 gr/kg, 20 gr/kg, 30 gr/kg, 40 gr/kg and 50 gr/kg. Sampel menggunakan benih ikan gurami (Osphronemus gouramy) dengan Panjang 5 cm. Hasil penelitian menunjukkan bahwa pemberian tepung daun papaya (Carica papaya L) dengan dosis yang berbeda berpengaruh nyata terhadap pertumbuhan berat mutlak ikan gurami (Osphronemus gouramy). Perlakuan E memberikan hasil tertinggi sebesar 4,50 gr/ekor. Data kualitas air diperoleh suhu air berkisar 27.2 ºC – 27.6 ºC, derajat keasaman 7,3 – 7,7 dan oksigen terlarut 5,6 – 5,9 ppm.Kata Kunci: ikan gurami, daun pepayaABSTRACTThe purpose of this study was to determine the effect of giving papaya leaf flour (Carica papaya L) with different doses of artificial feed on the absolute weight growth of gouramy (Osphronemus gouramy) and to determine the additional dose of papaya leaf powder on artificial feed (Carica papaya L) on the growth of absolute weight of gouramy (Osphronemus gouramy). This research used a Completely Randomized Design (CRD) experimental method with 5 treatments and 5 replications. The treatments tested were the addition of papaya leaves (Carica papaya L) at different doses, namely; 0 gr/kg, 20 gr/kg, 30 gr/kg, 40 gr/kg and 50 gr/kg. The sample uses gourami fish (Osphronemus gouramy) seeds with a length of 5 cm. The results showed that the administration of papaya leaf flour (Carica papaya L) with different doses had a significant effect on the absolute weight growth of gourami (Oshpronemus gouramy). Treatment E gave the highest yield of 4.50 gr/head. Water quality data obtained from water temperatures ranging from 27.2 ºC – 27.6 ºC, potential of hydrogen 7,3 – 7,7 and dissolved oxygen 5,6 – 5,9 ppm.Keywords: gourami fish (Osphronemus gourami), papaya leaves (Carica papaya L)
Struktur Komunitas Plankton di Pantai Wisata Kampung Kerapu Situbondo Era Fitri Awwalia; Misbakhul Munir; Dian Sari Maisaroh
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.27321

Abstract

ABSTRAKPerairan Pantai Wisata Kampung Kerapu dipengaruhi aktivitas manusia, seperti pembuangan limbah dari budidaya ikan kerapu, pemukiman, dan pariwisata dapat mempengaruhi kualitas perairan dan keberadaan organisme. Contohnya, fitoplankton yang berfungsi sebagai produsen primer dan zooplankton sebagai konsumen pertama. Penelitian ini bertujuan untuk mengukur nilai parameter lingkungan perairan, mengetahui struktur komunitas plankton dan menganalisis hubungan struktur komunitas plankton dengan parameter lingkungan di perairan Pantai Wisata Kampung Kerapu Situbondo. Penelitian ini dilaksanakan pada bulan Maret 2024 di Pantai Wisata Kampung Kerapu Situbondo. Penelitian ini menggunakan metode deskriptif dan analisis data menggunakan Priciple Component Analysis (PCA). Metode penentuan stasiun menggunakan purposive sampling. Hasil dari penelitian ini menunjukkan bahwa kualitas air dengan parameter suhu, kecerahan, pH, DO, salinitas, fosfat dan BOD masih sesuai dalam baku mutu KEPMEN LH no.51 tahun 2004 untuk biota laut kecuali nitrat. Struktur komunitas plankton meliputi kelimpahan (N) fitoplankton dan zooplankton sebesar 2.213 – 3.821 ind/ml dan 518 – 883 ind/ml, keanekaragaman (H’) fitoplankton dan zooplankton sebesar 1,71 – 2,27 dan 1,42 – 2,08, keseragaman (E) fitoplankton dan zooplankton sebesar 0,67 – 0,88 dan 0,59 – 0,87, dominansi (C) fitoplankton dan zooplankton sebesar 0,12 – 0,23 dan 0,14 – 0,29. Hubungan kualitas perairan terhadap struktur komunitas plankton adalah salinitas, BOD, fosfat, pH, dan suhu. Kata Kunci: Struktur Komunitas Plankton, Parameter Perairan, Principle Component Analysis (PCA), SitubondoABSTRACTThe waters of the Kampung Kerapu Tourism Beach affect human activities, such as the disposal of waste from grouper cultivation, settlements, and tourism which can affect the quality of the waters and the existence of organisms. For example, phytoplankton function as primary producers and zooplankton as primary consumers. This research aims to measure the value of aquatic environmental parameters, determine the structure of the plankton community and analyze the relationship between plankton community structure and environmental parameters in the waters of the Kampung Kerapu Tourism Beach, Situbondo. This research was carried out in March 2024 at the Kampung Kerapu Tourism Beach, Situbondo. This research uses descriptive methods and data analysis using Principle Component Analysis (PCA). The method for determining stations uses purposive sampling. The results of this research show that water quality with the parameters of temperature, brightness, pH, DO, salinity, phosphate and BOD still conforms to the quality standards KEPMEN LH no. 51 of 2004 for marine biota except nitrate. The plankton community structure includes abundance (N) of phytoplankton and zooplankton of 2,213 – 3,821 ind/ml and 518 – 883 ind/ml, diversity (H') of phytoplankton and zooplankton of 1.71 – 2.27 and 1.42 – 2.08, uniformity (E) of phytoplankton and zooplankton is 0.67 – 0.88 and 0.59 – 0.87, dominance (C) of phytoplankton and zooplankton is 0.12 – 0.23 and 0.14 – 0.29. The relationship between water quality and plankton community structure is salinity, BOD, phosphate, pH, and temperature.Keywords: Structure Plankton Community, Water Parameters, Principle Component Analysis (PCA), Situbondo
Pengaruh Penambahan Vitamin B Kompleks Pada Pakan Komersial Terhadap Pertumbuhan Berat Mutlak Benih Ikan Lele Dumbo (Clarias gariepinus) Ukuran 2-3 Cm Ritno Habibur Rahman; Muhajir Muhajir; Sri Oetami Madyowati
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.22519

Abstract

ABSTRAKBenih lele dumbo sangat rentan terhadap infeksi oleh berbagai penyakit, oleh karena itu daya tahan tubuhnya perlu dijaga bahkan ditingkatkan. Salah satu bahan untuk fungsi ini adalah vitamin B kompleks. Walaupun vitamin B kompleks dalam tubuh benih ikan lele dumbo dibutuhkan dalam jumlah sedikit, akan sangat fatal jika mengalami kekurangan atau kelebihan vitamin B kompleks, salah satu akibatnya nafsu makan menurun sehingga dapat menghambat pertumbuhan. Penelitian ini bertujuan untuk mengetahui penambahan dosis vitamin B kompleks yang terbaik pada pakan komersial terhadap pertumbuhan berat mutlak benih ikan lele dumbo (Clarias gareipinus) ukuran 2-3 cm. Penelitian ini menggunakan metode eksperimen dengan rancangan acak lengkap dengan 5 perlakuan dengan 5 ulangan. Perlakuan A ; penambahan vitamin B kompleks dengan dosis 40 mg/liter air tawar, perlakuan B; penambahan vitamin B kompleks dengan dosis 90 mg mg/liter air tawar, perlakuan C; penambahan vitamin B kompleks dengan dosis 140 mg/liter air tawar, perlakuan D; penambahan vitamin B kompleks dengan dosis 190 mg/liter air tawar dan perlakuan E; penambahan vitamin B kompleks dengan dosis 240 mg/liter air tawar. Hewan uji yang digunakan dalam penelitian ini adalah benih lele dumbo dengan bobot rata-rata 0,14 g/ekor. Padat tebar 1 ekor/liter dan media percobaan menggunakan air tawar dengan volume 3 liter/bak. Hasil penelitian menunjukkan bahwa perlakuan C memberikan hasil tertinggi terhadap pertumbuhan berat mutlak benih ikan lele dumbo (Clarias gareipinus) ukuran 2-3 cm dengan ukuran 10,52 gr. Data kualitas air diperoleh suhu air berkisar antara 28,1 0C – 28,3 0C, keasaman berkisar antara 8,2 – 8,3 dan oksigen terlarut berkisar antara 6,2 – 6,6 ppm.Kata kunci; vitamin B kompleks, pakan komersil, pertumbuhan berat mutlak, lele dumboABSTRACTDumbo catfish seeds are very susceptible to infection by a variety of diseases, hence their immune system needs to be maintained and even enhanced. One of the ingredients for this function is vitamin B complex. Although vitamin B complex in the body of dumbo catfish seeds is needed in small amounts, it will be fatal if it experiences a lack or excess of vitamin B complex, one of the consequences is decreased appetite so that it can hamper growth. This study aims to determine the addition of the best dose of vitamin B complex in commercial feed on the absolute weight growth of dumbo catfish seeds (Clarias gareipinus) size 2-3 cm. This study used an experimental method with a complete randomized design with 5 treatments with 5 repetitions. The treatment A; the addition of vitamin B complex at a dose of 40 mg/liter of fresh water, treatment B; the addition of vitamin B complex at a dose of 90 mg/liter of fresh water, treatment C; the addition of vitamin B complex at a dose of 140 mg/liter of fresh water, treatment D; the addition of vitamin B complex at a dose of 190 mg/liter of fresh water and treatment E; the addition of vitamin B complex at a dose of 240 mg/liter of fresh water. The test animals used in this study were dumbo catfish seeds with an average weight of 0.14 g/tail. Stocking density was 1 tail/liter and the experimental media used fresh water with a volume of 3 liters/basin. The test animal used in this study were dumbo catfish seeds with an average weight of 0,14 g/head. Stocking density was 1 tail/liter and the experimental media used fresh water with a volume of 3 liters/basin. The study results showed that treatment C gave the highest results on absolute weight growth of dumbo catfish (Clarias gareipinus) fry size 2-3 cm with a size of 10,52 g. Water quality data obtained water temperature ranged from 28,10C – 28,30C, acidity ranged from 8,2 – 8,3 and dissolved oxygen ranged from 6,2–6,6 ppm.Keywords: vitamin B complex, commercial feeding, absolute weight growth, dumbo catfish
Laju Pertumbuhan dan Keanekaragaman Biofouling di Perairan Desa Socah, Kecamatan Socah, Bangkalan Aziz Pringgo Dwi P; Lisdiana Miftakhul Fitroh; Novi Indriyawati; Kartika Dewi; Nur Ayu Aprilia; Isna Adila; Alya Putri Ariyanti; Dini Latifatul Qolbi; Vevilia Tri Amanda; Sofyan Tauri
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.29136

Abstract

AbstrakBiofouling merupakan proses penempelan organisme hidup pada permukaan struktur yang berada di dalam atau dekat badan air. Tujuan penelitian ini yaitu untuk mengetahui jenis biofuling, komposisi jenis, kepadatan, indeks biologi, laju penempelan dan mengukur parameter kualitas air di Perairan Desa Socah, Kecamatan Socah, Bangkalan. Penelitian dilakukan pada 2 stasiun dimana setiap stasiun terdapat 4 substrat buatan dan 1 substrat alami.. Penelitian dilakukan dengan pengamatan selama 3 minggu. Dari hasil pengamatan didapatkan hasil 2 kelompok, yaitu artopoda dan gastropoda. Stasiun 1 dan 2 didominansi oleh kelompok arthopoda dari jenis teritip dengan nilai indeks dominansi masing-masing sebesar 0,5 yang termasuk dalam katagori tinggi. HKeanekaragaman fouling pada stasiun 1 dan 2 masing-masing menunjukan nilai indeks keanekaragaman (H’) yang rendah dengan nilai indeks1,0. asil pengukuran kualitas air yang dilakukan di lokasi penelitian didapatkan suhu 29.7 ⁰C – 33.0 ⁰C, salinitas 21 ppt - 25 ppt dan pH 7,6 – 8. Kata kunci: Fouling; Komposisi Jenis; Kepadatan; Keanekaragaman; Parameter Kualitas Air AbstractBiofouling is the process of living organisms adhering to the surfaces of structures located in or near bodies of water.  The purpose of this research is to determine the types of biofouling, species composition, density, biological index, adhesion rate, and to measure water quality parameters in the waters of Socah Village, Socah District, Bangkalan.  The research was conducted at 2 stations where each station had 4 artificial substrates and 1 natural substrate.  The research was conducted with observations over a period of 3 weeks.  The results of the observations led to the identification of two groups: gastropods and arthropods. The arthropod group of barnacle species dominates stations 1 and 2, each of which has a dominance index value of 0.5, placing it in the high category. The fouling diversity at stations 1 and 2 each showed low diversity index (H’) values with index 1.0.  The research site's water quality assessments revealed temperatures between 29.7 and 33.0 °C, salt levels between 21 and 25 ppt, and a pH between 7.6 and 8. Keywords: Fouling; Species Composition; Density; Diversity; Water Quality Parameters
Kelimpahan Dan Keanekaragaman Makrozoobentos Sebagai Bioindikator Kualitas Air Sungai Brantas Wilayah Hilir (Mojokerto, Sidoarjo, Surabaya) Aulia Maulidah; Syifania Hanifah Samara; Wahyu Isroni; Sapto Andriyono
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.26683

Abstract

ABSTRAKHilir Sungai Brantas mencakup kota Mojokerto, Kabupaten Sidoarjo, dan Kota Surabaya. Komoditas budidaya air tawar dengan volume produksi tertinggi di wilayah hilir Sungai Brantas adalah ikan lele. Sungai Brantas wilayah hilir telah mengalami penurunan kualitas air. Makrozoobentos dapat digunakan untuk mengetahui kualitas air. Penelitian ini menggunakan metode survei dengan analisis data secara deskriptif kuantitatif. Hasil penelitian ini menunjukkan nilai kelimpahan tidak merata dengan yang terendah 1% dan yang tertinggi 95,4%, sedangkan indeks keanekaragaman makrozoobentos yang didapatkan berkisar antara 0,187-1,267 yang masuk dalam keanekaragaman rendah sampai sedang dengan kategori tercemar sedang sampai berat. Substrat dasar yang didapatkan cukup beragam dikarenakan lokasi stasiun yang jauh serta kondisi sungai yang berbeda. Hasil pengukuran kualitas air di Sungai Brantas wilayah hilir, didapatkan suhu antara 25,5-28,9 oC, kecerahan antara 25-30 cm, pH antara 7,8-8, DO antara 3,1-5,2 mg/L, BOD antara 5,5-9 mg/L, COD antara 45-65 mg/L, dan TSS antara 400-900 mg/L.Kata kunci: Hilir, Sungai Brantas, kelimpahan, keanekaragaman, kualitas air.ABSTRACTThe downstream of the Brantas River includes Mojokerto city, Sidoarjo Regency and Surabaya city. The freshwater aquaculture commodity with the highest production volume in the lower reaches of the Brantas River is catfish. The downstream Brantas River has experienced a decline in water quality. Macrozoobenthos can be used to determine water quality. This study used a survey method with descriptive quantitative data analysis. The results of this study showed an uneven abundance value with the lowest being 1% and the highest being 95.4%, while the macrozoobenthos diversity index obtained ranged from 0.187 to 1.267 which is included in low to moderate diversity with moderate to heavily polluted categories. The basic substrate obtained is quite diverse due to the remote location of the stations and the different conditions of the river. The results of water quality measurements in the downstream Brantas River, obtained temperatures between 25.5-28.9 oC, brightness between 25-30 cm, pH between 7.8-8, DO between 3.1-5.2 mg/L, BOD between 5.5-9 mg/L, COD between 45-65 mg/L, and TSS between 400-900 mg/L.Keywords: Downstream, Brantas River, abundance, diversity, water quality.
Microbial Profile of Frozen Fisheries Products at UPT PMP2KP Surabaya Fadiya Furuujihim Rohsarifuddin; Yolandha Sephiani Nurhafifah; Puspa Maharani; Kismiyati Kismiyati; Rahmah Hendriyati; Woro Hastuti Satyantini
Juvenil Vol 6, No 1: Februari (2025)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v6i1.26337

Abstract

ABSTRACTMicrobial contamination of food products is one of the significant hazards in food safety because the nature of food-polluting bacteria is generally pathogenic.This research was conducted at the Microbiology Laboratorium in UPT PMP2KP Surabaya. Samples tested in this research including frozen fish, frozen shrimp, and frozen value added products with  microbiological parameters tested are Total Plate Count, Salmonella, and Escherichia coli. The results obtained in this research showed that 100% of 21 frozen fish and shrimp samples met SNI safety standards, namely 1 x 105  CFU/g for TPC, 3 MPN / g  for E. coli, and negative for Salmonella.Keywords: E. coli, Food Safety, Frozen Fisheries Product, Salmonella

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