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All Journal JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX JURNAL PERIKANAN DAN KELAUTAN TROPIS JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Jurnal Perikanan Universitas Gadjah Mada Jurnal Ilmiah Sains
Darus S. Paransa
Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Mathematics Physics

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ISOLASI PIGMEN KAROTENOID DARI KEPITING Grapsus sp. (CAROTENOID PIGMENTS ISOLATION FROM CRABS Grapsus sp.) Dias Diasasthisa; Darus J Paransa; Desy MH Mantiri; Antonius Rumengan; Veibe Warouw; Meiske Salaki
JURNAL PESISIR DAN LAUT TROPIS Vol. 7 No. 2 (2019): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.7.2.2019.24216

Abstract

Carotenoids are pigments with a range of red, orange and yellow colors. In carotenoid and chlorophyll plants are located in chloroplasts which undergo photosynthesis as well as photosynthetic bacteria and fungi. Carotenoid compounds have antioxidant activity, anticancer, as precursors of vitamin A and can enhance immunity. Crustaceans like crabs Grapsus sp. have carotenoid pigments, visible red, orange, and yellow are scattered in the carapace. Pigments found in crustaceans as well as crabs of Grapsus sp. generally sourced from food eaten by the crab. To determine the process of carotenoid pigment metabolism, each crab organ of Grapsus sp. isolated using thin layer chromatography separation method and column chromatography to determine the type of pigment contained therein. Pigment types identified in the crabs of Grapsus sp. males using the TLC method: β-carotene, Astasen type, Cantasantin, Astasantin, and Adonirubin. Pigment types identified in the crabs of Grapsus sp. males using the CC method: β-carotene, Astasen, β-cryptosanthine, Zeaxantine, and Cryptosanthine. Keywords : Grapsus sp., Thin Layer Chromatography, Column Chromatography, Carotenoids Pigments.             Karotenoid merupakan pigmen dengan kisaran warna merah, orange dan kuning. Pada tumbuhan karotenoid dan klorofil terletak pada kloroplas yang mengalami proses fotosintesis seperti juga pada bakteri fotosintetik dan fungi. Senyawa karotenoid memiliki aktivitas antioksidan, antikanker, sebagai prekursor vitamin A dan dapat meningkatkan imunitas. Krustasea seperti kepiting Grapsus sp. mempunyai pigmen karotenoid, terlihat warna merah, jingga, dan kuning yang tersebar pada karapas. Pigmen yang terdapat pada krustasea demikian juga pada kepiting Grapsus sp. umumnya bersumber dari makanan yang dimakan oleh kepiting tersebut. Untuk mengetahui proses metabolisme pigmen karotenoid maka masing-masing organ kepiting Grapsus sp. diisolasi dengan menggunakan metode pemisahan kromatografi lapis tipis dan kromatografi kolom untuk mengetahui jenis pigmen yang terkandung didalamnya. Jenis pigmen yang teridentifikasi pada kepiting Grapsus sp. jantan dengan metode KLT yaitu : β- karoten, Tipe Astasen, Kantasantin, Astasantin, dan Adonirubin. Jenis pigmen yang teridentifikasi pada kepiting Grapsus sp. jantan dengan metode KK  yaitu : β- karoten, Astasen, β-kriptosantin, Zeaxantin, dan Kriptosantin. Kata Kunci : Grapsus sp., Kromatografi Lapis Tipis, Kromatografi Kolom, Pigmen Karotenoid.  
PEMISAHAN JENIS PIGMEN KAROTENOID DARI KEPITING Grapsus sp JANTAN MENGGUNAKAN METODE KROMATOGRAFI KOLOM Anisa ET Silaa; Darus SJ Paransa; Anton P Rumengan; Kurniati Kemer; Natalie DC Rumampuk; Hengky Manoppo
JURNAL PESISIR DAN LAUT TROPIS Vol. 7 No. 2 (2019): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.7.2.2019.24247

Abstract

Grapsus sp crab has a greenish black body color and also known as stone crab. Crabs in the genus Grapsus sp have a swift movement, long legs, they do not have swimming legs and have small reddish purple or purple-orange color, claws on the body of this crab indicated the presence of pigments such as carotenoid pigments. Carotenoid pigments are one form of secondary metabolites which consist of carotene and xanthophyll groups. Carotenoid pigments are present in yellow, orange or orange red which are also found in crabs. Separation of carotenoid pigments can be done using the TLC method, High Performance Liquid Chromatography (HPLC) and Column Chromatography (CC). The purpose of this study was to determine the type of carotenoid pigment from male Grapsus sp crab extract using the Column Chromatography separation method. From the results of this study, the carotenoid pigment content in the 1,2 and 3 carapace was 46,85 μg, 39 µg, and 33,14 µg. The carotenoid pigment concentrations in carapace extracts 1,2 and 3 are 25,38 µg/g, 23,4 µg/g and 5,11 µg/g. From the results of the separation using the column chromatography method, the type of carotenoid pigment identified from the carapace extract of Grapsus sp male is β-Carotene, Ekinenon, Astaxantine, Kantaxantine and Astacen.Keywords: Grapsus sp, Carotenoid, Column ChromatographyKepiting Grapsus sp memiliki warna tubuh hitam kehijauan dan dikenal dengan nama kepiting batu. Kepiting dalam genus Grapsus sp memiliki gerakkan yang cekatan, mempunyai kaki yang panjang, tidak memiliki kaki renang dan memiliki capit berukuran kecil yang berwarna ungu kemerahan atau ungu-oranye warna pada tubuh kepiting ini mengindikasikan adanya kandungan pigmen seperti pigmen karotenoid. Pigmen karotenoid merupakan salah satu bentuk metabolit sekunder yang yang terdiri dari golongan karoten dan xantofil. Pigmen karotenoid  hadir dalam warna kuning, oranye, atau merah oranye, yang juga ditemukan pada kepiting. Pemisahan pigmen karotenoid dapat dilakukan dengan menggunakan metode KLT, Kromatografi Cair Kinerja Tinggi (KCKT) dan Kromatografi Kolom (KK). Tujuan dari penelitian ini adalah untuk mengetahui jenis pigmen karotenoid dari ekstrak kepiting Grapsus sp Jantan dengan menggunakan metode pemisahan Kromatografi Kolom. Dari hasil penelitian ini, didapatkan kandungan pigmen karotenoid pada karapas 1,2 dan 3 adalah 46,85 µg 39 µg, dan 33,14 µg. Konsentrasi pigmen karotenoid pada ekstrak karapas 1,2 dan 3 adalah 25,38 µg/g, 23,4 µg/g dan 5,11 µg/g. Hasil pemisahan menggunakan metode pemisahan kromatografi kolom didapatkan ekstrak karapas kepiting Grapsus sp jantan memiliki jenis pigmen β-Karoten, Ekinenon, Astaxantin, Kantaxantin dan Astasen.Kata kunci: Grapsus sp, Karotenoid, Kromatografi Kolom, 
PENENTUAN KANDUNGAN PIGMEN KAROTENOID PADA KEPITING Grapsus albolineatus (Lamarck) BETINA DARI PERAIRAN PESISIR PANTAI DESA TANAWANGKO Sutandi Makalalag; Darus saadah Paransa; Desy M H Mantri
JURNAL PESISIR DAN LAUT TROPIS Vol. 5 No. 3 (2017): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.5.3.2017.24262

Abstract

Grapsus albolineatus (Lamarck) is one of the species of blackish-green crab found above or below the coastal rocks. At has long legs and no swimming legs and has a small claw. Purple capitals, is characteristic of this type of crab., the G. albolineatus crab has an attractive color on the carapace organ that indicates the presence of pigment content. This study was aimed to determined the content and it’s pigment type of the organs of the carapace, epidermal layer, hepatopancreas, blood and gonads in the female G. albolineatus (Lamarck) crab. The method of this research in order to separated and determinated of pigment content by using thin layer chromatography (TLC) method. The results obtained in this study were the total pigment content of G. albolineatus crab showed the highest value in gonad organ with value 34,41 μg, followed by epidermal layer organ 12,19 μg, hepatopancreas 9,61 μg, blood 1,06 μg and carapace 0.42 μg. the pigment content of the gonads organ has the highest value compared with other organs, it is presumed that the female G. albolineatus crab is at the mature stage of the gonad, so that the carotenoid pigment is still accumulated on the gonad organ used for the gonadal maturation process. The types of pigment identified in the extract of the carapace organ, epidermal layer, hepatopancreas, gonads and blood from female G. albolineatus crabs with semipolar solution of Petroleum Eter and Acetone are: β-carotene, echinone, kantaksantin, adonirubin type, astaxanthine and astacene .Keywords: Grapsus albolineatus, TLC, pigmentGrapsus albolineatus (Lamarck) merupakan salah satu spesies kepiting yang berwarna hitam kehijauan yang ditemukan di atas atau di bawah batu pantai. Memiliki kaki jalan yang panjang dan tidak memiliki kaki renang serta memiliki capit yang berukuran kecil. Capit berwarna ungu, merupakan ciri khas kepiting jenis ini. Kepiting G. albolineatus memiliki warna yang menarik pada organ karapas yang mengindikasikan adanya kandungan pigmen. Penelitian ini bertujuan untuk menentukan kandungan dan jenis pigmen pada organ karapas, lapisan epidermis, hepatopankreas, darah dan gonad pada kepiting G. albolineatus (Lamarck) betina. Pemisahan yang umum digunakan dalam penentuan jenis pigmen karotenoid adalah menggunakan metode Kromatografi Lapis Tipis. Pemisahan ini dikenal karena proses pemisahannya mudah, sederhana dan membutuhkan waktu yang relatif singkat serta dapat menghasilkan data yang akurat. Hasil yang diperoleh dalam penelitian ini adalah kandungan pigmen total dari kepiting G. albolineatus menunjukkan nilai tertinggi pada organ gonad dengan nilai 34,41 g, diikuti organ lapisan epidermis 12,19 g, hepatopankreas 9,61 g, darah 1,06 g dan karapas 0,42 g. kandungan pigmen pada organ gonad memiliki nilai tertinggi dibandingkan dengan organ lainnya, diduga kepiting G. albolineatus betina ini berada pada tahap matang gonad, sehingga pigmen karotenoid masih tertumpuk pada organ gonad yang digunakan untuk proses pematangan gonad. Jenis-jenis pigmen yang teridentifikasi pada ekstrak organ karapas, lapisan epidermis, hepatopankreas, gonad dan darah dari kepiting G. albolineatus betina dengan larutan pengembang PE dan Aseton (80:20) yang bersifat semipolar yaitu: β-karoten, ekinenon, kantaksantin, tipe adonirubin, astaksantin dan astasen.Kata kunci : Grapsus albolineatus, KLT, pigmen
ANALISIS PIGMEN KLOROFIL PADA ALGA Kappaphycus alvarezii YANG DIBUDIDAYAKAN DI TELUK TOTOK KABUPATEN MINAHASA TENGGARA Raja Doli; Desy MH Mantiri; Darus S J Paransa; Kurniati Kremer; Rosita Lintang; Sipriani Tumembow
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 1 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.1.2020.27399

Abstract

Macroalgae is a chlorophyll plant and its body is thallus and is able to live in polluted waters. The research was conducted with the intention of knowing the content of chlorophyll pigment and comparing the concentration of chlorophyll on Kappaphycus alvarezii using the formula Jeffrey and Humprey (1975) and Harbone (1987). The results obtained to separate the chlorophyll pigment on Kappaphycus alvarezii using the thin layer chromatography (KLT) method, thus obtained the pigment identified from Kappaphycus alvarezii namely chlorophyll a. Keywords: Kappaphycus alvarezii, thin-layer chromatography. Chlorophyll.AbstrakMakroalga merupakan tumbuhan yang berklorofil dan tubuhnya berupa thallus serta mampu hidup pada perairan tercemar. Penelitian ini dilakukan dengan tujuan untuk mengetahui kandungan pigmen klorofil dan membandingkan konsentrasi klorofil pada Kappaphycus alvarezii menggunakan rumus Jeffrey dan Humprey (1975) dan Harbone (1987). Hasil yang diperoleh untuk memisahkan pigmen klorofil pada Kappaphycus alvarezii menggunakan metode Kromatografi Lapis Tipis (KLT), sehingga diperoleh pigmen yang teridentifikasi dari Kappaphycus alvarezii yaitu klorofil a. Keywords : Kappaphycus alvarezii, Kromatografi Lapis Tipis. Klorofil.
ISOLASI PIGMEN KAROTENOID PADA KEPITING Metopograpsus sp. BETINA Franciskus K.I. Manik; Darus J Paransa; Desy MH Mantiri; Elvy L Ginting; Veibe Warouw; Rudy Moningkey
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 1 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.1.2020.27494

Abstract

Metopograpsus sp is one of species of crabs usually found in indo-pacifik and lived at mangrove's trunk. The characteristic of this type of crab has type color on the carapace organ that indicate the presence of carotenoid. carotenoid pigments are natural dyes in plants and crustacea. The purpose of this study is to determined type of carotenoid pigments of metopograpsus sp by using TLC Method. The result of this study were identified three type of pigments of metopograpsus sp that are β-Karoten, Astaxanthin, dan Astacene.Key word : Metopograpsus sp, TLC, Carotenoid pigments.AbstrakMetopograpsus sp adalah kepiting mangrove yang biasanya ditemukan di Indo-Pasifik dan hidup dibatang pohon mangrove. Ciri khas dari kepiting ini memiliki corak berwarna pada karapasnya sehingga diasumsikan kepiting tersebut mengandung pigmen karotenoid. pigmen karatenoid adalah pewarna alami yang terdapat pada tanaman dan hewan krustasea. Tujuan dari penelitian ini untuk mengetahui jenis-jenis pigmen karotenoid pada kepiting Metopograpsus sp dengan menggunakan metode KLT. Hasil penelitian terdapat tiga jenis pigmen karotenoid yang teridentifikasi pada kepiting Metopograpsus sp yaitu : β-Karoten, Astaxanthin, dan Astacene.Kata Kunci : Metopograpsus sp, KLT, pigmen karotenoid
LAJU PERTUMBUHAN KARANG Acropora formosa YANG DITRANPLANTASI PADA MEDIA TEMPEL DAN MEDIA GANTUNG Stevania M Runtuwene; Indri S Manembu; Noldy G.F Mamangkey; Antonius P Rumengan; Darus Paransa; Hariyani Sambali
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 1 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.1.2020.27553

Abstract

Corals are associations of millions polyps that live in symbiotic way with zooxanthellae algae. Most of the polyps live in colonies and form a reef. Coral reefs are rich ecosystems that contain diverse organisms living in it. However, the threat of damage increases with the pressure that enters the waters. Coral transplantation is one way of restorations that can be done to restore damaged corals by cutting live corals and then planting them in places where the corals have been damaged. This study aims to determine the growth rate of Acropora formosa corals that were transplanted on fixed and hanging media. Data was collected in Malalayang Coast Waters, Manado City, North Sulawesi. The research took place for seven months. Beginning with the coral transplant activity of Acropora formosa on fixed and hanging media, then continued with monitoring every month for six months. Transplanted corals were measured using a ruler to determine the length of the coral from the beginning to the end of the study and then the data was analyzed using Microsoft Excel. The results obtained for the average growth rate of Acropora formosa corals transplanted on fixed media were 0.8 cm and on hanging media 1.8 cm. Overall growth rate averaged 1.3 cm.Keywords: Coral, Coral Reef, Transplant, Acropora formosa.
Efek Senyawa Timbal Asetat Terhadap Pertumbuhan Dan Kandungan Pigmen Klorofil Mikroalga Dunaliella sp. Joshep Tamalonggehe; Kurniati Kemer; Darus Sa’adah J Paransa; Desy MH Mantiri; Nickson J Kawung; Suzanne L Undap
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 2 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.2.2020.28764

Abstract

Microalgae is one of the marine biota that has an important role in the waters because it acts as a supplier of food in the waters. Microalgae is a biological source that needs to be exploited because it is rich in essential compounds. Dunaliella sp. is one of the many micro algae used as research. Utilization of Dunaliella sp. quite diverse and has been marketed in developed countries because of its very attractive economic value. This study aims to determine the effects of lead acetate compounds on growth and content of chlorophyll pigments microalgae Dunaliella sp. The results obtained in this study are the lead acetate compounds can affect the number of cells in the growth of microalgae and analysis results obtained with a spectrophotometer showed that the extraction concentration of control day 5 (Exponential Phase) was higher than the concentration of 15 ppm and 25 ppm, whereas extraction on day 21 (Death Phase) concentration of 15 ppm was higher than 25 ppm.Keywords : Dunalella sp., Lead Acetate, Pigment chlorophyll RingkasanMikroalga adalah salah satu biota laut yang memiliki peran penting di perairan karena berfungsi sebagai pemasok makanan di perairan. Mikroalga adalah sumber biologis yang perlu dieksploitasi karena kaya akan senyawa esensial. Dunaliella sp. adalah salah satu dari banyak mikroalga yang digunakan sebagai penelitian. Pemanfaatan Dunaliella sp. cukup beragam dan telah dipasarkan di negara maju karena nilai ekonominya yang sangat menarik. Penelitian ini bertujuan untuk mengetahui efek senyawa timbal asetat terhadap pertumbuhan dan kandungan pigmen klorofil Dunaliella sp. Hasil yang diperoleh dalam penelitian ini adalah senyawa timbal asetat dapat mempengaruhi jumlah sel dalam pertumbuhan mikroalga, penurunan jumlah sel mengikuti konsentrasi timbal asetat yang diberikan dan hasil analisis yang diperoleh dengan spektrofotometer menunjukkan bahwa konsentrasi ekstraksi kontrol hari 5 (Fase Eksponensial) lebih tinggi daripada konsentrasi 15 ppm dan 25 ppm, sedangkan ekstraksi hari 21 (Fase Kematian) konsentrasi 15 ppm lebih tinggi dari 25 ppm.Kata kunci : Dunaliella sp., Timbal Asetat, Pigmen Klorofil
KANDUNGAN LOGAM BERAT ARSEN PADA ALGA Kappaphycus alvarezii SERTA SEDIMEN DI PERAIRAN DESA BUKU KECAMATAN BELANG KABUPATEN MINAHASA TENGGARA Laurenzy Tampongangoy; Desy M H Mantiri; Darus SJ Paransa; Rizald M Rompas; James J H Paulus; suzanne Undap
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 2 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.2.2021.35514

Abstract

Kappaphycus alvarezii is one species algae that is very widely developed in the tropical waters, especially in Indonesia. The potential in these waters may decrease due to heavy metal pollution that accumulates in algae and sediments. Analyzing the content of heavy metal arsenic (As), using the SNI 01-2896-1998 test method, namely the metal contamination test method in food. The results obtained from this study were samples of brown and green Kapapphycus alvarezii taken from week I-V detected containing heavy metal arsenic (As) ranging from 0.17 - 0.42 ppm for green algae and 0.12 - 0.37 ppm for brown algae. This As concentration does not exceed the maximum heavy metal limit, which is 1.0 ppm for the maximum limit for heavy metal contamination in food. The concentration of heavy metal in sediments is 1.12 ppm, not exceeding the quality standard in the Environmental Protection Agency (EPA), the maximum heavy metal limit for arsenic in sediment is below 10 mg/kg
IDENTIFIKASI MORFOLOGI DAN KEANEKARAGAMAN KEPITING PADA TIMBUNAN BERBATU DI PANTAI PESISIR MALALAYANG DUA KOTA MANADO Fatmawati Amin; Darus Saadah J Paransa; Medy Ompi; Desy M.H. Mantiri; Farnis Bineada Boneka; Ockstan Kalesaran
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 3 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.3.2021.37746

Abstract

The diversity of crabs in the Malalayang One coast is thought to vary between research locations and limited information on biota that live on rocky, sandy and muddy coastal beaches. Sampling was carried out at low tide at night by capturing directly using a protected hand and for lighting with the help of a flashlight. The collected samples were taken to the Aquaculture Technology Laboratory, Faculty of Fisheries and Marine Sciences, UNSRAT to be identified and for diversity using the Shanon-winer mathematical formula. The results of crabs obtained at five coastal locations on the coast of Malalayang, Manado, with a total of 106 with 7 species, namely Metopograpsus latifrons, Sesarmops impressus, Ocypode kuhlii, Macrophthalmus mareotis depressus, Uca vocans dussumieri, Grapsus Longitarsis and Grapsus albolineatus.Keywords: Crab, Morphology, Diversity, Coastal Ecosystem.
Keanekaragaman Makrobentos yang Menempati Agregasi Kerang, Septifer bilocullaris di Tiwoho, Kabupaten Minahasa Utara, Sulawesi Utara Muhammad Zhaqif Ambarak; Medy Ompi; Darus Sa’dah J. Paransa; Joice R.T.S.L. Rimper; Antonius P. Rumengan; Nego E. Bataragoa
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 3 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.3.2021.38043

Abstract

The purpose of this study was to determine the type and diversity of macrobenthos that inhabit the aggregation of Septifer bilocularis shellfish in the coastal waters of Tiwoho, North Minahasa Regency, North Sulawesi. Sampling of macrobenthos was carried out using core (PVC), both at the position of small aggregation (AK), middle large aggregation (ABT), and large edge aggregation (ABP). Sampling was carried out 4 times on different aggregations of shellfish. The data has been analyzed using the Diversity Index (H), the dominance index (D), and the Uniformity Index (E). It was identified that there were 25 types of macrobenthos occupying all aggregations of septifer bilocularis shells, which came from 11 classes including Gastropods, Bivalves, Malacostraca, Florideiphyceae, Ulvophyceae Ophiuroidea, Clitelatta, Maxillopoda, Globothalamea, Tubothalamea and Phaeophyceae. Biota diversity index varies from 1.60 – 1.70 which indicates that the biota in each aggregation has moderate diversity. The uniformity index value also varied, namely 0.069 for macrobenthos occupying the small aggregation (AK), then 0.066 in the middle large aggregation (ABT) and 0.064 in the large margin aggregation (GBP), which indicates the low uniformity of the macrobenthos in each aggregation. The dominance index of all aggregations was obtained between 0.27 - 0.36, which indicates that there is no species dominance for macrobenthos occupying different shellfish aggregations.Keywords: Diversity, Macrobenthos, Septifer bilocularis, Tiwoho
Co-Authors Abdullah, Ridha Adrian, Melinda Margareta Angkow, Esther Angmalisang, Ping Angmalisang, Ping A, Anisa ET Silaa Anneke V. Lohoo Anton P Rumengan Antonius P Rumengan Antonius P. Rumengan Antonius P. Rumengan Antonius Rumengan Antonius Rumengan Antonius Rumengan Aswan Thamin Bawias, Miranti Billy T. Wagey Calvyn F. A. Sondak, Calvyn F. A. Carolus Paulus Paruntu Chairulwan Umar Desy M H Mantri Dias Diasasthisa Efraim Bulele Elvy L Ginting Erly Y. Kaligis, Erly Y. Farnis B Boneka Farnis Bineada Boneka Fatmawati Amin Ferdinand F. Tilaar Fernando Gultom, Fernando Franciskus K.I. Manik Frans Lumoindong, Frans Gaspar D. Manu, Gaspar D. Grevo S Gerung Hariyani Sambali Hengky Manoppo Henky Manoppo Indri S Manembu Irfan Sirajudin James J H Paulus James J.H Paulus Janny D. Kusen Jetty K. Rangan Jetty Rangan Joice R.T.S.L. Rimper Joppy Mudeng Joshep Tamalonggehe Joshian N. W. Schaduw Joshian N.W. Schaduw Joudy R. R. Sangari Jumeini, Jumeini Kemer, Kurnati Kepel, Rene Ch. Kumampung, Deislie Kumampung, Deislie R.H. Kurnia Kemer, Kurnia Kurniati Kemer Kurniati Kemer Kurniati Kemer Kurniati Kemer Kurniati Kremer Laurenzy Tampongangoy Lepa, Bryan Gabriel Lessy Armiyanti Maartianus S. Baroleh Mantiri, Desy M. H Mantiri, Rose Medy Ompi Medy Ompi Medy Ompi Meilin Yulita Walo Meiske Salaki Mokoginta, Fatika Sari Mokolensang, Jeffrie Muhammad Zhaqif Ambarak N. Gustaf F. Mamangkey Nainggolan, Secilya Natalie D Rumampuk Natalie DC Rumampuk Nego E. Bataragoa Nickson J Kawung Nickson J. Kawung, Nickson J. Noldy G.F Mamangkey Ockstan Kalesaran Pankie Pangemanan Paulus, James Paulus, James J. H Paulus, James J. H. Pelle, Wilmy E. Raja Doli Remy E.P. Mangindaan Ridwan Lasabuda Rignolda Djamaluddin Rizald M Rompas Robert A. B. Tangkery Robert A. Bara Rosita Lintang Royke M. Rampengan Rudy Moningkey Rumengan, Antonius Petrus Rustikasari, Irna Silvester B Pratasik Sipriani Tumembow Stenly Wullur Stevania M Runtuwene Sundah, Geraldo Thimoty Sutandi Makalalag Suzanne L Undap suzanne Undap Tamara Angela Gabriela Siahaan Tilaar, Ferdinand F. Veibe Warouw Veibe Warouw Veibe Warouw Werianty Liony Zeak Wilmy E. Pelle