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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 276 Documents
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Biodiversitas Gastropoda Berdasarkan Tipe Sedimen Pada Kawasan Ekosistem Mangrove Kecamatan Socah, Kabupaten Bangkalan Farah Gustia Jana; Fitria Hersiana Afifa; Haryo Triajie; Indah Wahyuni Abida; Febi Ayu Pramithasari
Juvenil Vol 5, No 4: November 2024
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.v5i4.26537

Abstract

ABSTRACTLokasi penelitian merupakan daerah muara dan termasuk wilayah ekosistem mangrove yang terdapat pertambakan, dengan luas kawasan ekosistem mangrove Kecamatan Socah mencapai 92.00 ha. Gastropoda sebagai kelompok organisme fakultatif yang dapat bertahan pada kisaran perubahan lingkungan yang tidak terlalu lebar, sehingga perubahan lingkungan perairan dan tipe sedimen tentu sangat berpengaruh terhadap keragaman dan komposisi populasi. Metode penelitian ini menggunakan metode deskriptif kuantitatif dengan pengambilan data primer dan sekunder. Stasiun pertama dan kedua ditemukan mangrove berjenis Rhizophora mucronata dan Avicennia alba, sedangkan pada stasiun ketiga ditemukan mangrove dengan jenis Rhizophora mucronata, Avicennia alba dan Avicennia marina. Didapatkan 9 famili gastropoda dengan nilai kelimpahan tertinggi selama penelitian diperoleh pada stasiun 2 yaitu spesies Cerithidea cingulata sebesar 42 ind/m2 dan secara keseluruhan spesies ini kelimpahannya paling banyak dari spesies lainnya yaitu sebanyak 110.3 ind/m2. Hasil analisis tipe sedimen dengan menggunakan metode kering pada semua stasiun menunjukkan bahwa tipe sedimen tergolong sand (pasir). Tipe sedimen mud dan parameter kualitas air sangat berpengaruh bagi kelimpahan gastropoda karena saling berkorelasi. Jenis substrat adalah faktor utama yang mengontrol distribusi makrozoobhentos dan penyebaran gastropoda erat sekali hubungannya dengan kondisi perairan dimana organisme ini ditemukan.Kata kunci: Biodiversitas, Gastropoda, Mangrove, Sedimen,SocahKata kunci: Biodiversitas, Gastropoda, Mangrove, Sedimen,SocahABSTRACTThe research location is an estuary area and includes a mangrove ecosystem area with aquaculture, with the area of the Socah District mangrove ecosystem reaching 92.00 ha. Gastropods as a group of facultative organisms that can survive in a range of environmental changes that are not too wide, so that changes in the aquatic environment and sediment types certainly greatly affect the diversity and composition of the population. This research method uses a quantitative descriptive method with primary and secondary data collection. The first and second stations found mangroves of the Rhizophora mucronata and Avicennia alba types, while at the third station found mangroves of the Rhizophora mucronata, Avicennia alba and Avicennia marina types. 9 gastropod families were obtained with the highest abundance values during the study obtained at station 2, namely the Cerithidea cingulata species of 42 ind/m2 and overall this species has the highest abundance of other species, namely 110.3 ind/m2. The results of the sediment type analysis using the dry method at all stations showed that the sediment type was classified as sand. The types of mud sediment and water quality parameters greatly influence the abundance of gastropods because they are correlated. Substrate type is the main factor that controls the distribution of macrozoobhenthos and the distribution of gastropods is closely related to the water conditions where these organisms are found.Key words: Biodiversity, Mangrove, Gastropods, Sediment, Socah
Analisis Faktor Biokonsentrasi Dan Faktor Translokasi Dari Logam Berat Cu Pada Mangrove Rhizopora sp. Salju Qolbi Ilhami; Jihannuma Adibiah Nurdini
Juvenil Vol 5, No 4: November 2024
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.v5i4.28067

Abstract

ABSTRAKSalah satu polutan logam berat di lingkungan adalah tembaga (Cu) yang bersumber dari aktivitas manusia seperti industri dan pertambangan yang tidak dikelola dengan baik, menimbulkan limbah yang mengandung logam berat yang kemudian terakumulasi dan dibawa oleh aliran air menuju laut. Penelitian ini menganalisis kandungan logam berat, faktor biokonsentrasi serta faktor tranlokasi pada akar, sedimen, dan daun mangrove. Stasiun pengambilan sampel mencakup 5 stasiun yaitu: Sepulu, Poltera, Modung, Tajungan, dan Bancaran. Metode yang digunakan untuk menganalisis logam berat Cu adalah metode detruksi asam nitrat peklorat dan spektrofotometri serapan atom dengan panjang gelombang 324,7 nm. Hasil yang ditemukan dengan cemaran logam berat Cu tertinggi pada akar, daun, dan sedimen terdapat di stasiun 4 dengan masing-masing nilai besaran 0.5880; 0.4965; 4.8510. Sedangkan dengan nilai kandungan logam berat Cu terendah pada akar, daun, dan sedimen terdapat di stasiun 3 dengan masing-masing nilai besaran 0.2130; 0.0952; 0.5221. Faktor biokonsentrasi tertinggi adalah akar rata-rata sebesar 0.429, kemudian daun dengan rata-rata 0.220. Faktor translokasi untuk mengetahui perpindahan akumulasi logam dari akar ke daun, nilai factor translokasi tertinggi tertinggi berada di stasiun 4 sebesar 0.844. Hal ini membuktikan bahwa mangrove dapat mengakumulasi logam berat dalam jaringan tubuhnya untuk mengurangi pencemaran logam berat.Kata Kunci: Logam berat Cu, Mangrove, Rhizopora Mucronata, Faktor Bikonsentrasi, Faktor TranslokasiABSTRACTOne of the heavy metal pollutants in the environment is copper (Cu) which comes from human activities such as industry and mining that are not managed properly, causing waste containing heavy metals which then accumulate and are carried by water flow to the sea. This study analyzed the content of heavy metals, bioconcentration factors and translocation factors in roots, sediments, and mangrove leaves. Sampling stations include 5 stations, namely: Sepulu, Poltera, Modung, Tajungan, and Bancaran. The method used to analyze the heavy metal Cu is the nitric acid pechlorate destruction method and atomic absorption spectrophotometry with a wavelength of 324.7 nm. The results found with the highest Cu heavy metal contamination in roots, leaves, and sediments were at station 4 with respective values of 0.5880; 0.4965; 4.8510. While the lowest Cu heavy metal content in roots, leaves, and sediments was at station 3 with respective values of 0.2130; 0.0952; 0.5221. The bioconcentration factor is the ability of organisms to accumulate heavy metals in sediment, the highest bioconcentration factor value is the average root of 0.429, then the leaves with an average of 0.220. The translocation factor is to determine the transfer of metal accumulation from roots to leaves, the highest translocation factor value is at station 4 of 0.844. This proves that mangroves can accumulate heavy metals in their body tissues to reduce heavy metal pollution.Keywords: Heavy metal Cu, Mangrove, Rhizophora Mucronata, Bioconcentration Factor, Translocation Factor
Pengaruh Penambahan Isolate Soy Protein (ISP) terhadap Sifat Fisikokimia dan Hedonik Bakso Ikan Lele (Clarias sp.) Pramuji Rahman; Ita Zuraida; Seftylia Diachanty; Bagus Fajar Pamungkas; Ilmiani Rusdin
Juvenil Vol 5, No 4: November 2024
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.v5i4.27293

Abstract

ABSTRAK Ikan lele merupakan ikan berdaging putih yang dapat diolah menjadi berbagai macam produk berbasis fish jelly. Bakso ikan adalah produk diversifikasi hasil perikanan yang dapat dikembangkan dan berpeluang menambah nilai tambah jual (added value), salah satunya dengan penambahan Isolate Soy Protein (ISP). Tujuan dilakukan penelitian ini untuk mengetahui karakteristik fisikokimia bakso ikan lele (Clarias sp.) dengan penambahan ISP. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan perlakuan rasio daging lumat dan persentase ISP S0 (85% daging lumat: 0% ISP); S1(82% daging lumat: 3% ISP); S2 (80% daging lumat: 5% ISP); S3 (78% daging lumat: 7% ISP), dan S4 (74% daging lumat: 9% ISP), dengan pengulangan sebanyak 3 kali. Parameter uji terdiri dari kadar air, abu, lemak, protein, karbohidrat, uji Expresible Moisture Content (EMC) dan hedonik (aroma, tekstur, rasa, dan warna).  Hasil penelitian menunjukan bakso ikan lele yang ditambahkan ISP memiliki karakteristik fisikokimia meliputi kadar air (56,72%-62,89%), abu (2,08%-2,55%), lemak (0,53%-0,88%), protein (12,27%-15,39%), karbohidrat (21,87%-24,81%), EMC (2,85%-5,02%). Hasil uji hedonik dengan parameter aroma 5,40-5,60 (suka), tekstur 5,10-5,53 (suka), rasa 4,93-5,70 (suka), warna 5,17-5,53 (suka). Uji hedonik terbaik dari segi aroma (5: suka), tekstur (5: suka), rasa (5: suka), dan warna (5: suka) terdapat pada perlakuan S2 (ISP 5%).Kata kunci: Bakso, Clarias sp., EMC, Hedonik, Isolate Soy Protein. ABSTRACTCatfish is a white-fleshed fish that can be processed into various fish jelly-based products. Fish meatballs are a diversified fishery product that can be developed and has the potential to increase added value, one of which is by adding Isolate Soy Protein (ISP). The purpose of this research was to determine the physicochemical characteristics of catfish meatballs (Clarias sp.) with the addition of ISP. The experimental used a Complete Randomized Design (CRD) with the ratio of minced meat and ISP percentage treatments S0 (85% minced meat: 0% ISP); S1 (82% minced meat: 3% ISP); S2 (80% minced meat: 5% ISP); S3 (78% minced meat: 7% ISP), and S4 (74% minced meat: 9% ISP) with 3 repetitions. The parameters consisted of water content, ash, fat, protein, carbohydrate, Expresible Moisture Content (EMC) and hedonic tests (aroma, texture, taste, and color). The results showed that catfish meatballs added with ISP had physichochemical characteristics including moisture content (56.72%-62.89%), ash (2,08%-2,55%), fat (0,53%-0,88%), protein (12,27%-15,39%), carbohydrate (21,87%-24,81%), EMC (2.85%-5.02%). The results of the hedonic test with aroma parameters 5.40-5.60 (like), texture 5.10-5.53 (like), taste 4.93-5.10 (like), color 5.17-5.53 (like). The best hedonic test of aroma (5: like), texture (5: like), taste (5: like), and color (5: like) was found in S2 (ISP 5%).Keywords: Clarias sp, EMC, Hedonic, Isolate Soy Protein, Meatballs
Jenis dan Ukuran Ikan Famili Scombridae yang Tertangkap Jaring Insang Hanyut (Drift gillnet) dengan Ukuran Mata Jaring 10 cm dan Shortening 56% di Perairan Ambunten, Kabupaten Sumenep Wiqoyah Elma Wahyuni; Muhammad Zainuri
Juvenil Vol 5, No 4: November 2024
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.v5i4.27538

Abstract

 ABSTRAKScombridae adalah kelompok famili ikan yang memiliki nilai ekonomis tinggi dan banyak dimanfaatkan potensinya oleh masyarakat di Ambunten. Nelayan menggunakan alat tangkap jaring insang hanyut (drift gillnet) dengan ukuran mata jaring (mesh size)  10 cm dan nilai shortening 56% sehingga membentuk bukaan mata jaring yang disesuaikan dengan bentuk tubuh ikan target. Tujuan dari penelitian adalah mengetahui ukuran tubuh dari jenis-jenis ikan yang tertangkap serta komposisinya.  Pengambilan data dilakukan dengan mengikuti nelayan mengoperasikan alat tangkap, mengidentifikasi jenis ikan, mengukur parameter morfologi dan menghitung jumlah ikan yang tertangkap. Data dianalisa scara deskriptif kuantitatif.  Hasil penelitian menunjukkan bahwa jenis ikan dari kelompok Scombridae terdiri dari cakalang (Katsuwonus pelamis), tuna (Thunnus obesus), tenggiri (Scomberomorus commersonii), dan tongkol (Euthynnus affinis).   Ukuran panjang tubuh rata-rata berkisar      40,25 cm – 41,72 cm; berat tubuh rata-rata berkisar 1,33 kg – 1,63 kg; tinggi tubuh rata-rata berkisar 9,20 cm – 9,33 cm; lebar tubuh rata-rata berkisar 5,86 cm – 6,29 cm. Komposisi hasil tangkapan berdasarkan jumlah individu (%)  adalah, ikan tongkol 798 ekor (32,31%), cakalang 660 ekor (26,72%), tenggiri 620 ekor  (25,10%), dan tuna 392 ekor (15,87%).  Kata Kunci : Jaring Insang Hanyut; Scombridae; ukuran mata jaring; pengerutan jaringABSTRACT Scombridae is a group of fish families that have high economic value and their potential is widely exploited by the people of Ambunten. Fishermen use drift gillnet fishing gear with a mesh size of 10 cm and a shortening value of 56% to form mesh openings that are adapted to the body shape of the target fish. The aim of the research is to determine the body size of the types of fish caught and their composition.  Data collection was carried out by following fishermen operating fishing gear, identifying fish types, measuring morphological parameters and counting the number of fish caught. Data were analyzed quantitatively descriptively.  The results of the research show that the types of fish from the Scombridae group consist of skipjack (Katsuwonus pelamis), tuna (Thunnus obesus), mackerel (Scomberomorus commersonii), and little tuna (Euthynnus affinis).   Average body length ranges from 40.25 cm – 41.72 cm; average body weight ranges from 1.33 kg – 1.63 kg; average body height ranges from 9.20 cm – 9.33 cm; average body width ranges from 5.86 cm – 6.29 cm. The composition of the catch based on the number of individuals (%) was, 798 tuna (32.31%), 660 skipjack tuna (26.72%), 620 mackerel (25.10%), and 392 little tuna (15.87%). %). Keywords : Drift Gill Net; Scombridae; Mesh Size; Shortening
Pengaruh Pakan Yang Berbeda Dalam Upaya Domestifikasi Terhadap Pertumbuhan Dan Kelangsungan Hidup Ikan Maru (Channa marulioides) Ukuran 10-12 Cm Muhammad Ahsan Maulana; Andri Nofreeana; Tholibah Mujtahidah; Rizal Akbar Hutagalung
Juvenil Vol 5, No 4: November 2024
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.v5i4.22479

Abstract

ABSTRAK Ikan hias predator Channa marulioides memiliki nilai daya tarik dikalangan pecinta ikan hias. Banyaknya peminat menjadikan ikan ini terancam terjadi penurunan stok di alam. Upaya domestikasi menjadi solusi dalam mengatasi permasalahan tersebut. Pemilihan dan pemberian pakan yang tepat merupakan hal penting dalam menunjang keberhasilan domestikasi ikan. Penelitian ini menggunakan jenis pakan yang berbeda dengan tujuan mendapakan hasil terbaik pada pertumbuhan dan kelulushidupan ikan maru (Channa marulioides) dalam upaya domestikasi. Metode penelitian RAL (Rancangan Acak Lengkap) dengan 4 perlakuan 3 kali ulangan. Perlakuan yang diterapkan adalah pemberian pakan dengan perlakuan P1 (ikan peto), P2 (Pelet buatan KAE), P3 (Cacing sutera), dan P4 (Udang rebon kering). Perlakuan terbaik yaitu didapatkan pada P2 (Pelet buatan KAE) dengan nilai pertumbuhan panjang 3,18 cm, berat mutlak 15,07 gram, laju pertumbuhan spesifik 3,26%, kelangsungan hidup 100%, FCR 3,88, pertumbuhan ikan bersifat allometrik negatif. Serta kualitas air yang cukup mendukung dalam menunjang pertumbuhan dan kelangsungan hidup dalam upaya domestikasi ikan maru (Channa marulioides) antara lain suhu berkisar 31-32,3℃, pH berkisar 7,6-8,4, DO berkisar 6,08-6,33 mg/L, dan kadar amoniak berkisar 0,25-0,50 mg/L. Kata kunci: Ikan maru (Channa marulioides), Domestikasi, Pertumbuhan, Kelangsungan Hidup ABSTRACTThe predatory ornamental fish Channa marulioides has an attractiveness value among ornamental fish lovers. The large number of enthusiasts makes this fish threatened with a decline in stocks in nature. Domestication efforts are a solution to overcome these problems. Selecting and providing the right feed is important in supporting the success of fish domestication. This research used different types of feed with the aim of getting the best results on the growth and survival of maru fish (Channa marulioides). Research method RAL (Completely Randomized Design) with 4 treatments 3 replications. The treatments applied was feeding with treatment P1 (peto fish), P2 (KAE pellets), P3 (silk worms), and P4 (dried rebon shrimp). The best treatment was P2 (KAE pellets) with a growth value of 5.51 cm in length, absolut weight of 21.52 grams, specific weight of 3.26%, survival rate of 100%, FCR of 37.73, fish growth negative allometric. As well as water quality that is sufficient to support the growth and survival rate of maru fish (Channa marulioides) domestication, including temperatures from 31-32,3℃, pH from 7,6-8.4, DO from 6,08-6.33 mg/day L, and ammonia levels ranged from0.25-0.50 mg/L. Keyword : Channa marulioides, Domestication, Growth, Survival Rate
Prevalence and intensity of Octolasmis infestation in mud crabs (Scylla spp.) in Wael coastal waters, Maluku, Indonesia Shelly Mieke Pattipeiluhu; Endang Jamal; Bethsy Jane Pattiasina
Juvenil Vol 5, No 4: November 2024
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.v5i4.27309

Abstract

ABSTRACTOctolasmis is one of the most common barnacle species found on crabs. The prevalence and intensity of Octolasmis infestation on crabs can indicate the health of crab populations, both in nature and aquaculture systems. This study aimed to determine the prevalence and intensity of Octolasmis spp. infestation on mud crabs Scylla spp. in Wael coastal waters, Maluku, Indonesia. Seventeen mud crab samples of seven males and ten females were collected from Wael coastal waters in January-February 2024. Each crab was measured for carapace length and body weight, and the number of infested crabs and Octolasmis spp. were counted in each infested crab. Prevalence of Octolasmis spp. in mud crabs Scylla spp. reached 64.71% with intensity of 28.09 ind/crab. Female crabs had a higher prevalence, 55%, and intensity of 10,59±1,21 ind/crab than males, 45% and 7,59±0,82 ind/crab, respectively, but statistically not significantly different (P = 0.3110.05). Correlation tests showed that body weight and carapace length of mud crabs were negatively correlated with Octolasmis spp. infestation, and the relationship was weak, R = - 0.084 and - 0.133, respectively. These findings provide preliminary information on the level of Octolasmis spp. infestation in mud crabs Scylla spp. in Wael coastal waters. Comprehensive research is required using proportional sample size, including the effect of season and water quality on Octolasmis spp. infestation levels.Keywords: parasites, density, host size, crabs, barnacle
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)

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