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IDENTIFICATION OF PHYTOPLANKTON TYPES IN TAMBAK BANDENG WITH HIGH QUALITY OF OMEGA-3 Herawati, Endang Yuli
JFMR (Journal of Fisheries and Marine Research) Vol. 3 No. 2 (2019): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2019.003.02.17

Abstract

Microalgae as a source of nutrients, can be a good alternative to the use of high-level organisms. The abundant omega 3 content in plankton, especially phytoplankton, needs to be conducted research on the identification of the types of phytoplankton in milkfish with high omega-3 quality. The purpose of the study was to identify the types of plankton containing omega-3 and to determine the levels of omega-3 from plankton found in milkfish ponds. This research was conducted at the Laboratory of the Faculty of Fisheries and Marine Sciences, Brawijaya University, Malang. The highest abundance of phytoplankton is from the Bachillariophyta division and the lowest division euglenophyta. Five types of plankton were determined to be tested for omega-3 fatty acids using the gas chromatography (GCMS) method, namely: Chaetoceros sp, Tetraselmis sp, Nitzchia, Chlorella and Spirulina. GCMS test results from several types of omega-3 fatty acid plankton isolates in Chaetoceros calcitrans were the highest compared to the other 4 plankton types. Conclusion of the composition of plankton in traditional pond waters consists of 4 phytoplankton divisions namely Chlorophyta, Chrysophyta, Cyanophyta, and Euglenophyta. GCMS test results from several types of plankton isolates omega-3 fatty acids in Chaetoceros sp, the highest compared to Tetraselmis sp, Nitzchia, Chlorella and Spirulina. Suggestion of natural feed in the water of milkfish ponds should use Chaetoceros sp because the content of omega 3 is high. Keywords: phytoplankton, omega-3 
DETERMINATION OF WATER QUALITY STATUS BASED ON HEAVY METAL CONTENTS IN THE RAINY AND DRY SEASON USING THE STORET INDEX IN PASURUAN SEA WATERS, EAST JAVA Herawati, Endang Yuli; Arfiati, Diana; Samuel, Pratama Diffi; Dina, Karina Farkha; Anugerah, Putri; Valina, Rahmi
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 2 (2021): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.02.3

Abstract

Waters that are presumably contaminated with heavy metals need to be observed to ensure the level of pollution to perform water restoration. This study was aimed to determine the status of water quality based on heavy metal contents. The survey method was employed in this study, and it was conducted in Pasuruan sea waters in different seasons; September 2019 represented the dry season, and April 2020 represented the rainy season. The water sampling stations were chosen by using purposive sampling in three sampling locations: the sea waters of Kraton, Lekok, and Nguling districts. The heavy metals and water quality parameters were analyzed by using Storet Index. The results indicated that the highest level of heavy metals was found in Lekok waters in September, consisting of Hg (1.22 mg/l), Cd (1.20 mg/l), and Pb (0.55 mg / l). The seawater of Nguling district had the lowest content in April, while Kraton's seawater was moderate. The water quality status based on the Storet Index suggested that the sea waters of Kraton, Lekok, and Nguling districts were classified as moderately polluted with a score of -16 to -24. The highest score was in September in the rainy season with a score of -24 and the score in April in the dry season was -16. It means that the score is increasing but still in the moderately polluted category. The measurement results of temperature, pH, dissolved oxygen, salinity, and current velocity were in optimum results for aquatic organisms in the dry season or the rainy season. Regarding the water quality status in Pasuruan sea waters, it can be concluded that the heavy metal contents exceeded the quality standard set by the government. Therefore, improved management is required to prevent the deterioration of the pollution status in Pasuruan sea waters
PERAN DAN KEBERADAAN ENZIM METALLOTHIONEIN SEBAGAI PENGIKAT LOGAM BERAT Pb PADA PANGKAL DAN UJUNG RUMPUT LAUT GRACILARIA sp. Tega, Yatris Rambu; Herawati, Endang Yuli; Kilawati, Yuni
JURNAL LEMURU Vol 5 No 1 (2023): JURNAL LEMURU: Jurnal Ilmu Perikanan dan Kelautan Indonesia
Publisher : Program Studi Teknologi Hasil Perikanan|Fakultas Pertanian|Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jl.v5i1.2440

Abstract

Produksi limbah Industri dan juga buangan limbah rumah tangga yang semakin meningkat dan terjadi terus-menerus, menjadikan sungai tempat pembuangan terakhir sehingga dapat mencemari biota yang berada disekitaran sungai tersebut. Masyarakat di Desa Kupang memanfaatkan aliran sungai tersebut sebagai sumber air untuk budidaya rumput laut Gracilaria sp. Salah satu untuk mengetahui cemaran logam berat pada perairan tersebut dengan mengecek keberadaan kadar Metallothionein pada rumput laut, karena sifat Metallothionein adalah protein yang dapat mengikat logam esensial maupun non esensial. Penelitian ini bertujuan untuk mengetahui kadar Metallothionein pada Gracilaria sp. yang terekspresi pada bagian pangkal dan ujung rumput laut Gracilaria sp. Metode yang digunakan adalah metode deskriptif. Analisis pengujian kadar Metallothionein menggunakan Eliza rider. Hasil penelitian ini bahwa kondisi perairan budidaya tambak Gracilaria sp. untuk parameter suhu, pH, DO sesuai dengan kondisi perairan tambak, tetapi pada parameter salinitas tidak sesuai yaitu melebihi SNI 40 ppt, karena penguapan yang tinggi pada saat musim kemarau, sehingga kadar garamnya tinggi. Kualitas perairan sangat berpengaruh dengan keberadaan Enzim Metallothionein pada pangkal dan ujung rumput laut, Kadar enzim Metallothionein tertinggi terdapat pada bagian ujung Gracilaria sp. yaitu berkisar antara 2.026-2.734 mg/mL. Terjadinya penyerapan yang tinggi karena pada bagian ujung terdapat banyak percabangan kecil dan masih muda sehingga proses penyerapannya masih kuat, sedangkan pada bagian pangkal terdiri dari sel-sel yang sudah tua dengan percabangan yang sedikit dan jumlahnya juga sedikit.
Analysis of Kidney Tissue Keting Mystus gulio (Hamilton, 1822) in Gembong and Rejoso River, Pasuruan, Indonesia Lestariaji, Chandika; Herawati, Endang Yuli; Arfiati, Diana; Djaduk, Saddam Langkung; Ristianadewi, Priska; Anjasmara, Aang Setyawan; Valina, Rahmi
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.7418

Abstract

Mystus gulio is a local fish that can open up opportunities for the community. Pollution causes water quality to decrease. Fish are an important indicator in the aquatic environment, Histological analysis can be said to have a function as a natural biological sign to determine the health condition of fish which can be seen from changes in tissue structure in organs exposed to pollutants. Organs that’s vulnerable to water pollution is kidneys.  Kidney tissue is susceptible to damage because kidneys function as a means of filtration and excretion, The method used in this research is descriptive method. Fish were caught from river than dissected to remove the kidneys for histopathological analysis using the HE method, analyzed using the scoring method. The results obtained in both rivers were that fish kidneys caught in the Gembong River were categorized as moderately damaged, while fish kidneys caught from the Rejoso River were categorized as lightly damaged. This is in line with the results of the heavy metal lead from both rivers. Where the yield of lead in fish kidneys caught from the Gembong is on average higher than the yield from fish kidneys caught from the Rejoso.
Growth Pattern and Morphometric Characteristics of Keting Mystus gulio (Hamilton, 1822) in Downstream of Gembong and Rejoso River, Pasuruan, Indonesia Lestariaji, Chandika; Herawati, Endang Yuli; Arfiati, Diana; Djaduk, Saddam Langkung; Ristianadewi, Priska; Anjasmara, Aang Setyawan; Valina, Rahmi
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.10175

Abstract

Keting fish is a type of fish from freshwater which is usually used as a consumption fish or ornamental fish. There is a type of kein, namely from the species Mystus gulio (Hamilton, 1922). Mystus gulio ecosystem is disturbed due to land-use change activities in the river which causes the disturbance of the habitat of Mystus gulio. The purpose of this study is to analyze the long-weight relationship, growth pattern, and condition factors of Mystus gulio in downstream Gembong and  Rejoso River. The method used in this study is to sample Mystus gulio from 3 stations on each river based on land use criteria. The research was carried out for 3 months, namely August, September and October 2023. The results of this study show that Mystus gulio caught in these two rivers all have a negative allometric growth pattern (b<3). The average value of the condition factor in these two rivers is 1 which indicates that the condition of Mystus gulio is good. The average growth of Mystus gulio caught in Gembong is relatively larger than Rejoso. The waters quality results of Gembong and Rejoso are still in optimal condition, except for Total Suspended Solid and Lead (Pb).