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Jurnal Kelautan Tropis
Published by Universitas Diponegoro
ISSN : 14108852     EISSN : 25283111     DOI : -
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Articles 451 Documents
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Potency of Chitosan and Chitooligochitosan (COS) as Prebiotics for Streptococcus thermophillus and Lactobacillus bulgaricus Probiotics Ervia Yudiati; Sri Sedjati; Adha Susanto; Nuril Azhar; Rabia Alghazeer
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.9925

Abstract

Lately, chitosan as a result of chitin deacetilation has known as potencial compound as food industry, pharmacy and environmental agents. The weakness of chitosan is the low water solubility and high viscosity. The size reduction by cutting the β-1, 4 glicosidic bond to improve the bioactivity is the alternative solution. This research aims to find out the addition of chitosan and COS for the Streptococcus thermophillus FNCC – 0041 and Lactobacillus bulgaricus FNCC – 0040 probiotics bacteria culture. S. thermophillus and L. bulgaricus were cultured in the MRS Broth media with addition of Commercial Chitosan (CC), Commercial Oligochitosan (COC), Self-production Chitosan (PC) and Self-production Oligochitosan (POC) in different doses (0.05; 0.1; and 0.2 mg.ml-1). Percentage DD on those treatments was similar. The spectra vibration of  The FT-IR analysis of PC and POC were fit to the CC and COC. In chitosan treatments, the best growth of S. thermophilus was reached at 0.2 mg/mL PC, while in chitooligochitosan was from 0.20 mg/mL COC treatments, respectively. The addition of different type of chitosan have a significant effect (p<0.05) to the growth of S. thermophillus, but have not resulted the significant effect to the L. bulgaricus (p>0.05) growth. So, therefore the addition of chitosan and COS as prebiotics for the probiotics were in dose dependant manner. Compare to chitosan commercial, our chitosan production have a good potency to be developed.
Sensitivity of Vibrio parahaemolyticus, V. vulnificus and V. harveyi Against Chloroxylenol (4-Chloro-3,5-dimethylphenol , C8H9ClO) Antiseptic and Pine Oil Disinfectant Subagiyo Subagiyo; Ervia Yudiati; Nuril Azhar; Rabia Alghazeer
Jurnal Kelautan Tropis Vol 23, No 3 (2020): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v23i3.9126

Abstract

Vibrio spp. genus is known as a marine indigeneous bacteria. Vibrio parahaemolyticus, V. vulnificus and  V. harveyi are pathogenic Vibrio. This study aims to assess the sensitivity of three Vibrio species (V parahaemolyticus, V. vulnificus and V. harveyi) isolated from shrimp pond against two type of disinfectant with different active compound namely Chloroxylenol (4-Chloro-3,5-dimethylphenol, C8H9ClO) and pine oil. The assessment was done by Kirby-Bauer disk diffusion methods in Zobell agar media with two different concentration (10 and 100 ppm) and replicated in three times. Sensitivity of Vibrio spp. was analized based on the inhibition zone activity produced by disinfectant. Results showed that sensitivity of Vibrio spp. against disinfectant Chloroxylenol 4.8% at 100 ppm were higher than 10 ppm. The increment of V parahaemolyticus was 182 %, V. vulnificus was 47 % and V. harveyi was 43 %, respectively.  Susceptibility of antiseptic with Chloroxylenol 4.8% at 100 ppm was arised to 152 % (V. parahaemolyticus), 43 % (V. vulnificus) and 31 % (V. harveyi) when compared to 2.5% pine oil disinfectant. It can be concluded that Chloroxylenol  4,8 % active compound and pine oil were able to inhibit the Vibrio spp. growth. 
Distribution and Size of Crab (Portunus pelagicus) in Betahwalang Waters, Demak, Central JavaSex Ratio, Size Distribution and Length-Weight Relationship of Portunus pelagicus Linnaeus, 1758 (Malacostraca : Portunidae) in Betahwalang, Demak, Central Java Sri Redjeki; Muhammad Zainuri; Ita Widowati; Ambariyanto Ambariyanto; Rudhi Pribadi; Michael Abbey
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.10467

Abstract

Blue Swimming Crab (P. pelagicus, Linnaeus, 1758) is the main fisheries product from Betahwalang peoples. Fishing activity of Blue Swimming Crab by the fisherman almost every day in Betahwalang waters. Distribution and body size data of Blue Swimming Crab can be used for sustain management reference. The purpose of this study was to determine distribution pattern and body size of Blue Swimming Crab, started from July to November 2018 in Betahwalang waters, Demak. The data analyze consist of sex ratio, carapace width distribution and relationship between carapace width and body weight. 11790 samples Blue Swimming crab from Betahwalang waters consist of 7070 female crabs and 4720 male crabs. The result showed that sex-ratio between male and female crabs are balanced (1.0:1.37), with the most female crabs found at July and August. Body size distribution of male and female crabs are dominated in class 103-111 mm carapace width. Male and female crabs have a positive allometric on growth parameters, that means growth of the body weight is faster than carapace width. The result showed that Blue Swimming Crab in Betahwalang waters are support for sustainable fisheries. 
Kontaminasi pestisida organofosfat dan logam berat pada airtanah di Wilayah Pantai Utara Jawa Tengah dan Jawa Timur B Tyas Susanti; Baskoro Rochaddi; Chrisna Adhi Suryono; Irwani Irwani
Jurnal Kelautan Tropis Vol 23, No 3 (2020): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v23i3.9398

Abstract

 Groundwater is the main source of clean fresh water in coastal areas. Coastal cities development in many sectors often produces waste that pollutes groundwater, among others, in the form of pesticides and heavy metals. Chlorpyrifos, mercury and arsenic are contaminants that are toxic and endanger human health or the environment. The purpose of this study was to examine groundwater conditions against contamination of organophosphate pesticides, heavy metals Hg and As in the northern coastal areas of Central Java and East Java. Chlorpyrifos content was found in 4 sample locations with a concentration of 0.0004 - 0.0021 ppm. Hg content was found at 8 sample locations with a concentration of 0.004 - 0.321 ppm and As was found at all locations (26) samples with a concentration of 0.102 - 0.505 ppm. The results of the analysis show that the incidence of pesticides and heavy metals in groundwater has anthropogenic sources due to agricultural, industrial or residential waste activities.  Airtanah merupakan sumber daya air tawar bersih yang utama di wilayah pesisir. Perkembangan kota-kota pesisir di banyak sektor seringkali menghasilkan limbah yang mencemari airtanah antara lain berupa pestisida dan logam berat. Khlorpirifos, merkuri dan arsen merupakan kontaminan yang bersifat toksik dan membahayakan kesehatan manusia ataupun lingkungan. Tujuan penelitian ini mengkaji kondisi airtanah terhadap kontaminasi pestisida organofosfat, logam berat Hg dan As di daerah pantai utara Jawa Tengah dan Jawa Timur. Kandungan khlorpirifos ditemukan di 4 lokasi sampel dengan konsentrasi 0,0004 – 0,0021 ppm. Kandungan Hg ditemukan pada 8 lokasi sampel dengan konsentrasi 0,004 – 0,321 ppm dan As ditemukan pada semua lokasi (26) sampel dengan konsentrasi 0,102 – 0,505 ppm. Hasil analisis menunjukkan kejadian pestisida dan logam berat pada airtanah bersumber antropogenik akibat kegiatan pertanian,  industri atau limbah pemukiman.
Variasi Morfometrik, Hubungan Panjang Bobot dan Faktor Kondisi Ikan Famili Holocentridae yang Didaratkan di Pelabuhan Perikanan Samudra (PPS) Lampulo, Banda Aceh Ilham Zulfahmi; Dwi Yuliandhani; Arif Sardi; Neri Kautsari; Yusrizal Akmal
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.9767

Abstract

Understanding of morphometric variation, length-weight relationship, and condition factors needed to support fishery resources management and conservation. Therefore, this study aimed to determine the morphometric variation, length-weight relationship, and condition factors of the Holocentridae family landed at the Lampulo Ocean Fishing Port, Banda Aceh. A total of 50 each of the four species of fish (Myripristis berndty, Myripristis murdjan, Sargocentron tieroides and Sargocentron caudimacullatum) were collected during April 2020. Fish samples were obtained from the catch of fishermen who landed at the Lampulo Ocean Fishing Port, Banda Aceh. The parameters analyzed included morphometric variations (12 characters), length and weight frequency distribution, length-weight relationship and condition factors. The results showed that the genus Myripristis had more distinguishing characters than the genus Sargocentron, namely 50.00% and 16.66%, respectively. Myripristis berndty and Myripristis murdjan have 5 distinguishing characters (SL, HL, CPL, HD, PFL and VFL), while Sargocentron tieroides and Sargocentron caudimacullatum only have 2 distinguishing characters (SnL and PFL). The Myripristis genus that were collected tended to more length and heavier compared to the genus Sargocentron. The four spesies of Holocentridae studied had a negative allometric growth pattern (b<3) with condition factor values ranging from 0.787 to 1.417.Pemahaman terkait variasi morfometrik, hubungan panjang bobot dan faktor kondisi sangat diperlukan dalam rangka pengelolaan dan konservasi sumberdaya perikanan. Oleh karenanya, penelitian ini bertujuan untuk mengetahui variasi morfometrik, hubungan panjang bobot serta faktor kondisi dari ikan Famili Holocentridae yang didaratkan di Pelabuhan Perikanan Samudera (PPS) Lampulo, Banda Aceh. Sebanyak masing-masing 50 ekor dari empat jenis ikan (Myripristis berndty, Myripristis murdjan, Sargocentron tieroides dan Sargocentron caudimacullatum) dikoleksi selama bulan April 2020. Sampel ikan diperoleh dari hasil tangkapan nelayan yang didaratkan di Pelabuhan Perikanan Samudera (PPS) Lampulo, Banda Aceh. Parameter yang analisis meliputi variasi morfometrik (12 karakter), selang kelas, hubungan panjang bobot dan faktor kondisi. Hasil penelitian menunjukkan bahwa genus Myripristis memiliki karakter pembeda yang lebih banyak dibandingkan dengan genus Sargocentron yaitu masing masing sebesar 50.00% dan 16.66%. Myripristis berndty dan Myripristis murdjan memiliki 5 karakter pembeda (SL,HL, CPL, HD, PFL dan VFL), sedangkan Sargocentron tieroides dan Sargocentron caudimacullatum hanya memiliki 2 karakter pembeda (SnL dan PFL). Genus Myripristis yang dikoleksi cenderung memiliki ukuran panjang total dan bobot total yang lebih rendah dibandingkan dengan genus Sargocentron.  Keempat jenis yang diteliti dalam penelitian ini memiliki pola pertumbuhan alometrik negatif (b<3) dengan nilai faktor kondisi berkisar antara 0.787 hingga 1.417
Pola Pertumbuhan dan Identifikasi Genetik Turbo setosus Gmelin, 1791 [Turbinidae, Gastropoda] Dandi Saleky; Febriyani Eka Supriyatin; Muhammad Dailami
Jurnal Kelautan Tropis Vol 23, No 3 (2020): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v23i3.7514

Abstract

Morphological dan genetic identification is an essential part of biology and ecological study. Environmental degradation, physical and chemical facto in water, and utilization of gastropod by society will give impact in distribution pattern, population size, morphology and genetic characteristic of the snail. This research aims to analyze the growth pattern and molecular aspect of Turbo setosus. The variable that examined is total weight and length, and cytochrome oxidase subunit one gene sequence. The growth factor of T. setosus is negative allometric, which means weight growth is slower than the length growth. The total length of cytochrome oxidase subunit 1 of these samples were 650 base pairs. Based on the DNA barcoding analysis, the sequence is 96.92% identic with the sequence of T. setosus in GenBank. The phylogenetic tree was reconstructed with neighbour-joining methods and 1000 replication bootstrap, show the clade grouping based on the similarity and genetic distance of the species. The sequence data is vital for species identification fast and accurately.    Identifikasi morfologi dan genetik menjadi bagian penting dari setiap studi biologi maupun ekologi, degradasi lingkungan, faktor fisik-kimia lingkungan dan pemanfaatan gastropoda secara terus menerus akan mempengaruhi penyebaran, penurunan populasi, karakteristik morfologi dan juga karakter molekuler spesies. Penelitian ini bertujuan untuk menganalisis pola pertumbuhan dan karakter molekuler Turbo setosus. Variabel yang diukur adalah berat total dan panjang total serta identifikasi molekuler dengan menggunakan gen sitokrom oksidase I. Pola pertumbuhan T. setosus adalah allometrik negatif yang berarti pertambahan berat lebih lambat dari pertambahan panjang. Hasil identifikasi dengan DNA barcoding diperoleh spesies T. setosus dengan panjang sekuen DNA 650 bp. Rekonstruksi filogenetik dengan metode Neighbor-Joining boostrap 1000x memperlihatkan pengelompokan sekuen berdasarkan kimiripan dan jarak genetik antar spesies. penting dalam identifikasi spesies secara cepat, tepat dan akurat.
Penilaian Sumber Pencemar Non Logam di Waduk Asin Pusong Kota Lhokseumawe Berdasarkan Analisis Multivariat Riri Ezraneti; Syahrial Syahrial; Erniati Erniati
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.9617

Abstract

Human anthropogenic activities have resulted in an important transformation in the aquatic environment for decades, so the study of the assessment of non-metallic pollutant sources in the salty reservoir Pusong in Lhokseumawe City was conducted in October 2020 which was reviewed based on multivariate analysis. The study aims to find out the source of non-metallic pollutants in the salt reservoir waters of Pusong Kota Lhokseumawe with the collection of primary data conducted by observation at five observation stations, where water samples are taken using van dorn water sampler at a depth of ± 0 – 1 m with three repetitions per station. The results showed that non-metallic contaminants of total ammonia nitrogen, nitrate, and phosphate had exceeded the established quality standards (>5.00 mg/L, >0.30 mg/L, >0.008 mg/L and >0.015 mg/L), then based on PCA analysis, eigenvalues of each variable indicate the formation of two new components namely Component 1 consisting of non-metallic nitrate contaminants and total nitrogen ammonia (3.05), while Component 2 consists of non-metallic contaminants total coliform and BOD5 (1.93) with a data diversity of 82.99%. Besides, non-metallic contaminants of total nitrogen ammonia, as well as phosphates, have a significant relationship to temperature parameters, while non-metal nitrate contaminants have significant links to pH parameters, turbidity, and salinity. Furthermore, the complexity of the study area between observation stations based on CA analysis was divided into two groups, the first group consisted of Stations 2, 4, and 5 with non-metallic contaminants source nitrate, BOD5 as well as total coliform, while the second group consisted of Stations 1 and 3 with non-metallic contaminants of total ammonia nitrogen, phosphate, and surfactants. Kegiatan antropogenik manusia telah menghasilkan transformasi penting dalam lingkungan akuatik selama beberapa dekade, sehingga kajian penilaian sumber pencemar non logam di waduk asin Pusong Kota Lhokseumawe dilakukan pada bulan Oktober 2020 yang ditinjau berdasarkan analisis multivariat. Kajian bertujuan untuk mengetahui sumber pencemar non logam di perairan waduk asin Pusong Kota Lhokseumawe dengan pengumpulan data primernya dilakukan secara observasi di lima stasiun pengamatan, dimana sampel air diambil menggunakan van dorn water sampler pada kedalaman ± 0–1 m dengan tiga kali pengulangan setiap stasiunnya. Hasil kajian memperlihatkan bahwa sumber pencemar non logam total amonia nitrogen, nitrat maupun fosfat sudah melebihi baku mutu yang telah ditetapkan (>5.00 mg/L, >0.30 mg/L, >0.008 mg/L dan >0.015 mg/L), kemudian berdasarkan analisis PCA, nilai eigen dari masing-masing variabel mengindikasikan adanya pembentukan dua komponen baru yaitu Component 1 terdiri dari sumber pencemar non logam nitrat dan total amonia nitrogen (3.05), sedangkan Component 2 terdiri dari sumber pencemar non logam total coliform dan BOD5 (1.93) dengan keragaman datanya sebesar 82.99%. Selain itu, sumber pencemar non logam total amonia nitrogen maupun fosfat memiliki hubungan yang signifikan terhadap parameter suhu, sedangkan sumber pencemar non logam nitrat memiliki hubungan yang signifikan terhadap parameter pH, kekeruhan dan salinitas. Selanjutnya, kompleksitas wilayah studi antar stasiun pengamatan berdasarkan analisis CA terbagi atas dua kelompok, kelompok pertama terdiri dari Stasiun 2, 4 dan 5 dengan sumber pencemar non logam nitrat, BOD5 serta total coliform, sedangkan kelompok kedua terdiri dari Stasiun 1 dan 3 dengan sumber pencemar non logam total amonia nitrogen, fosfat serta surfaktan.
Kerapatan Clathria reinwardti dan Spheciospongia inconstans di Reef Flat Pulau Barranglompo, Kepulauan Spermonde, Makassar Abdul Haris; Widyastuti Umar; Reski Adiguna; Andi Muh. Agung Pratama
Jurnal Kelautan Tropis Vol 24, No 2 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i2.10761

Abstract

This study aims to determine the density of the sponges Clathria reinwardti and Spheciospongia inconstans in the reef flat of Barranglompo Island, Spermonde Archipelago, Makassar. The method used is belt transect using a roll meter as a reference for distance. The starting point of the roll meter ± 50 m from the shoreline is drawn perpendicularly to the end of the reef reef by 3 transects with a distance of ± 50m between the roll meters. At each 25m interval the observations were made using a belt transect size of 15m × 5m as the limit of the observation. In each quadrant transect, were done first is documenting of each sponge then count the number of species present in each quadrant. The results showed that the density of Clathria reinwardti at stations I and II were 0.13 and 0.14 m-2 respectively and were not significantly different, while those at stations III and IV were 0.25 and 0.31 m-2 respectively and not significantly different. Station I and II are significantly different from stations III and IV. The density of Spheciospongia inconstans at station I 0.02 m-2, station II 0.14 m-2, station III 0.67 m-2, and station IV 0.44 m-2. The sponge density of S. inconstans between stations was significantly different. The density of C. reinwardti at stations III and IV was higher and significantly different than stations I and II, while the highest density of S. inconstans was found at station III followed by station IV, station II, and station 1, and was significantly different among the four stations.  Penelitian ini bertujuan untuk mengetahui kerapatan spons Clathria reinwardti dan Spheciospongia inconstans di reef flat Pulau Barranglompo, Kepulauan Spermonde, Kota Makassar. Metode yang digunakan adalah belt transect dengan menggunakan roll meter sebagai acuan jarak. Titik awal roll meter ±50 m dari garis pantai secara tegak lurus ditarik sampai batas akhir reef reef sebanyak 3 transek dengan jarak ±50m antar roll meter. Pada setiap interval 25m pengamatan dilakukan menggunakan belt transect ukuran 15m × 5m sebagai batasan pengamatan. Pada setiap transek kuadran, pertama-tama yang dilakukan adalah mengambil gambar setiap spons kemudian menghitung jumlah jenis yang terdapat pada setiap kuadran. Hasil penelitian, kerapatan spons Clathria reinwardti di stasiun I dan II masing-masing 0.13 dan 0.14 m-2 dan tidak berbeda nyata, sedangkan di stasiun III dan IV masing-masing 0.25 dan 0.31 m-2 dan tidak berbeda nyata. Stasiun I dan II berbeda nyata dengan stasiun III dan IV. Kerapatan spons Spheciospongia inconstans  pada stasiun I 0.02 m-2, stasiun II 0.14 m-2, stasiun III 0.67 m-2, dan stasiun IV 0.44 m-2. Kerapatan spons Spheciospongia inconstans antar stasiun berbeda nyata. Kerapatan Clathria reinwardti pada stasiun III dan IV lebih tinggi dan berbeda nyata daripada stasiun I dan II, sedangkan kerapatan Spheciospongia inconstans tertinggi didapatkan pada stasiun III disusul kemudian stasiun IV, stasiun II, dan stasiun 1, serta berbeda nyata di antara keempat stasiun tersebut.
Identifikasi Arus Pasang Surut di Perairan Kemujan, Karimunjawa Berdasarkan Data Pengukuran Acoustic Doppler Current Profiler Elis Indrayanti; Denny Nugroho Sugianto; Purwanto Purwanto; Hendry Syahputra Ropinus Siagian
Jurnal Kelautan Tropis Vol 24, No 2 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i2.11049

Abstract

Ocean currents are dynamic hydro-oceanographic parameters which is play an important role in the transport of nutrients, larvae, sediment, and so on. Therefore, the identification of ocean currents including velocity, direction, sea level and the type of currents important to be studied. The research was conducted in Kemujan Water, Karimunjawa. Data for this research is based on velocity data measured using the Acoustic Doppler Current Profiler (ADCP) for 3 x 24 hours. Furthermore, the raw data of the measurement are analyzed using least square methods to obtain the characteristic of tidal current. The total current is separated into tidal currents and residual current (non-tidal currents). Result shown that the characteristic of current in Kemujan Water, Karimunjawa was tidal current. Tidal current moves bi-directional, toward the northeast and the southwest.. Arus laut merupakan parameter hidro-oseanografi yang dinamis dan mempunyai peran penting dalam transpor nutrien, larva, material, dan lain sebagainya. Oleh karena itu identifikasi arus laut meliputi kecepatan, arah, elevasi muka air laut dan tipe arus laut perlu untuk dikaji. Penelitian dilaksanakan di Perairan Kemujan  yang merupakan salah satu gugusan pulau di Karimunjawa. Data  yang dianalisa merupakan data kecepatan arus hasil pengukuran langsung menggunakan Acoustic Doppler Current Profiler (ADCP) selama 3x24 jam. Selanjutnya raw data hasil pengukuran diolah dengan metode least square untuk mengetahui karakteristik arus. Arus total dipisahkan menjadi arus pasang surut dan arus non-pasang surut (residu). Hasil penelitian menunjukkan bahwa prosentase arus pasang surut lebih besar dari arus residu, sehingga arus di Perairan Kemujan, Karimunjawa teridentifikasi sebagai arus pasang surut. Arus  bergerak secara bertolak belakang (bi-directional) yaitu pada saat surut menuju pasang arah arus menuju ke timur laut dan pada saat pasang menuju surut arah arus menuju ke barat daya.
Kontaminasi Kerang Filter Feeder Perna viridis Linnaeus, 1758 (Bivalvia: Mytilidae) oleh Pestisida Organofosfat di Perairan Laut Brebes Jawa Tengah Indonesia Chrisna Adhi Suryono; Irwani Irwani; Baskoro Rochaddi; Wilis Ari Setyati; Agus Indardjo
Jurnal Kelautan Tropis Vol 24, No 2 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i2.11013

Abstract

In the last five years, organophosphate pesticides has been introduced in red onions fields in Brebes.  This will broadbly impact to the ecosystem, including the filter feeder marine organisms such as green mussel P. viridis. This article presents the occurrence level of organophosphate pesticides residues in marine waters and green mussel which has collected on Brebes marine areas. Some selected organophosphate pesticides compounds (Chlorpyrifos, Profenofos, Diazinon, Fenitrothion, Malation and Methidathion) of contaminant have been determined. The samples were then analyzed by using gas chromatography and followed by using the method of Standard Method Examination. The results showed that average of six residues (Chlorpyrifos, Profenofos, Diazinon, Fenitrothion, and Malation) in marine water were undetected (bd) (<0.0004 ppm). The merely concentration of PPOs detected was Chlorpyrifos 0.31 µg/L detected in green mussel. The concentration of organophosphate pesticides in these areas might contribute by the usage of organophosphate pesticide from red onion fields Dalam lima tahun terakhir, pestisida organofosfat mulai diperkenalkan di ladang bawang merah di Brebes.  Hal ini secara luas akan berdampak pada ekosistem, termasuk organisme laut filter feeder seperti kerang hijau P. viridis.  Artikel ini menyajikan tingkat residu pestisida organofosfat di perairan laut dan kerang hijau yang terkumpul di wilayah perairan Brebes. Beberapa senyawa pestisida organofosfat terpilih (Klorpirifos, Profenofos, Diazinon, Fenitrothion dan Malation) untuk dianilisa.  Sampel kemudian dianalisis dengan menggunakan kromatografi gas dan dilanjutkan dengan metode Pemeriksaan Metode Standar. Hasil penelitian menunjukkan bahwa rata-rata enam residu (Klorpirifos, Profenofos, Diazinon, Fenitrothion, dan Malation) di perairan laut tidak terdeteksi (bd) (<0,0004 ppm). Konsentrasi OPP yang terdeteksi hanyalah Klorpirifos 0,31 µg/L yang terdeteksi pada kerang hijau. Konsentrasi pestisida organofosfat di daerah tersebut kemungkinan besar disebabkan oleh penggunaan pestisida organofosfat dari ladang bawang merah.

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