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All Journal e-Journal BUDIDAYA PERAIRAN JURNAL PESISIR DAN LAUT TROPIS
Roeroe, Kakaskasen A.
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Earth & Planetary Sciences Environmental Science

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Komunitas ikan karang di Pantai Malalayang dan Pantai Meras Teluk Manado Sumual, Sarah S.; Kusen, Janny D.; Warouw, Veibe; Paruntu, Carolus P.; Roeroe, Kakaskasen A.; Boneka, Farnis B.
e-Journal BUDIDAYA PERAIRAN Vol 6, No 2 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.6.2.2018.20633

Abstract

The study aimed to identify species of reef fishes, to obtain indexes of diversity  and dominance, eveness and to analyze the comparison of communities between the two study sites by Sorensen similarity index. Data was gathered in-situ with underwater recordings at a depth of 6 meters assisted by diving apparatus, and using fish visual census method. Subsequent data were identified using  fish identifikaction guide and WoRMS (Word Register of Marine Science) online identification applications. The number of species and specimens of reef fishes from each study site after bein identified were then analyzed  the diversity, dominance and similarity of the community between the two study sites. The coral reef fishes identification results that obtained from each study site  were:  20 families, 86 spesies and 362 specimen at  Malalayang beach, and 15 families, 55 spesies and 217 specimen at Meras beach. The value of the calculated index o community structure obtained by H’ 3.42 (Malalayang) and 2.91 (meras) has been shown the ecological condition of coral reef ecosystem which is still stable even though diversity is moderate, but inversely with low dominance value (D=0.08). The coral reef fishes in both study sites were very diverse and there was no dominant species. Eveness of community between two study sites high.The result of community similarity analysis using Sorensen Index was 49 % (<50 %) indicates that there was no community similarity of coral reef fishes between Malalayang Beach and Meras Beach which was allegedly caused by natural factors and or anthropogenic one in both research sites.Keywords : coral reef fishes community, diversity, dominance, community similarity
KELIMPAHAN, DISTRIBUSI, DAN KERAGAMANNUDIBRANCHIA DI NUDIFALL DAN NUDIRETREAT SELAT LEMBEH, SULAWESI UTARA Ompi, Pricilia OM; Boneka, Farnis B; Ompi, Medy; Rimper, Joice S; Roeroe, Kakaskasen A; Kambey, Alex D
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.7.2.2019.24239

Abstract

Nudibranchia are known as marine invertebrates that have uniq colors and body shapes. The research was conducted in Nudifall and Nudiretreat, Lembeh Strait, North Sulawesi. The aims of this study were 1) to identify the species of Nudibranchia in both locations, 2) to know the abundance of Nudibranchia in those locations, 3) to determine distribution patterns of nudibranchia, and to know diversity of Nudibranchia in both Nudifall and Nudiretreat. The results show that 11 species of Nudibranchia were found in both Nudifall and Nudiretreat. The species of Chromodoris annae, Chromodoris magnifica, Flabellina expotata, Goniobranchus fidelis, Halgerda batangas, and 1 unidentified species were found in Nudifall, while the species of Goniobranchus geometricus, Glossidoris cincta, Phylllidia ocelata, Phylllidia varicose, Nembrotha rutilans were found in Nudiretreat. H. batangas was found to be the highest abundance, then it was followed byC. annae, C. magnifica, G. fidelis, unidenfied species (species-1), and C. magnificain Nudifall. P. ocelatawas found to be the highest abundance, then it was followed by G. geometricus, G. cincta, P. varicose, andN. Rutilans  in Nudiretreat.  Nudibranchia in both locations wasidentified to have random and grouped distribution pattern. Nudibranchia was found to have the same diversity among Nudifall and Nudiretreat. Factors affecting abudance, distribution patterns, and diversity were discuss in this paper.Keywords: Nudibranchia, Distribution, Abudance, Lembeh Strait. Nudibranchia dikenal sebagai avertebrata laut yang memiliki warna unik dan bentuk tubuh yang bervariasi. Penelitian ini di lakukan di Nudifall dan Nudiretreat, Selat Lembeh, Sulawesi Utara.   Tujuan penelitian ini adalah 1) mengidentifikasi jenis-jenis nudibranchia di lokasi Nudifall dan Nudiretreat, 2) mengetahui kelimpahan jenis-jenis Nudibranchia di kedua lokasi, 3) mengetahui pola distribusi jenis-jenis Nudibranchia di lokasi Nudifall dan Nudiretreatdi, 4) dan keragaman Nudibranchia di Nudifall dan Nudiretreat. Ada 11 jenis Nudibranchia ditemukan di kedu lokasi penelitian.Nudibranchia yang ditemukan di Nudifall ada 6 jenis, yaitu Chromodoris annae, Chromodoris magnifica, Flabellina expotata, Goniobranchus fidelis, Halgerda batangas, dan 1  spesies belum teridentifikasi (spesies-1). Nudibranchia yang ditemukan di Nudiretreat ada 5  jenis,yaitu Goniobranchus geometricus, Glossidoris cincta, Phylllidia ocelata,  Phylllidia varicose, Nembrotha rutilans. H. batangas memiliki kelimpahan yang tinggi, kemudian diikuti oleh C. annae, C. magnifica, G.fidelis, spesies-1, dan C. magnifica.di Nudifall.P. ocelata memiliki rata-rata tertinggi, selanjutnya diikuti oleh G. geometricus, G. cincta, P. varicose, dan N. Rutilans di Nudiretreat.Pola sebaran acak dan berkelompok teridentifikasi pada kedua lokasi.udibranchia teridentifikasi memiliki keragaman yang sama di kedua lokasi. Faktor-faktor yang mempengaruhi kelimpahan, distribusi, dan keragaman didiskusikan pada tulisan ini.Kata kunci: Nudibranchia, Distribusi, Kelimpahan, Selat Lembeh.
KERAGAMAN SUBSTRAT BAGI NUDIBRANCH DI SELAT LEMBEH Marpaung, Yehezkiel S.P.H.; Ompi, Medy; Manembu, Indri; Roeroe, Kakaskasen A.; Mamangkey, N. Gustaf F.; Lumingas, Lucky
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.7.2.2019.24144

Abstract

Research on the diversity of nudibranch substrates was carried out in Lembeh Strait at 3 locations, at Nudifall, Makawide, and Nudiritrit.  The purpose of the researchs 1) to discover the nudibranch species at Nudifall, Makawide, Nudiritrit in the Lembeh Strait. 2) to knowing the substrate occupied by nudibranchs in the Lembeh Strait. 3) to knowing the overlapping substrate that was occupied by the nudibranch. Subtrates can to be used by nudibranches to get food sources, shelter from predators, and as a place to live. Nudibranch species found in the Lembeh Strait were 19 species in this study. Dead Coral with Algae (DCA), sponges, algae, hard coral, and tunicates were the types of substrate where nudibranches live in the Lembeh Strait The most dominant or overlapping substrate between types of nudibranchs was Dead Coral with Algae. Keywords : Nudibranch, Substrate, Lembeh Substrate diversity of nudibranch at Lembeh Strait            Penelitian mengenai keragaman substrat nudibranch dilakukan di Selat Lembeh pada 3 lokasi yaitu Nudifall, Makawide, dan Nudiritrit.  Tujuannya yaitu 1) mengetahui jen nudibranch di Nudifall, Makawide, Nudiritrit di Selat Lembeh. 2) mengetahui substrat yang ditempati nudibranch di Selat Lembeh. 3) mengetahui substrat yang tumpang tindih (overlap) yang ditempati oleh nudibranch. Subtrat dapat dimanfaatkan oleh nudibranch untuk mendapatkan sumber makanan, tempat berlindung dari predator, dan sebagai tempat tinggal.  Jenis nudibranch yang ditemukan di Selat Lembeh ada 19 spesies dalam penelitian ini.  Dead Coral with Algae (DCA), spons, alga, hard coral, dan tunikata merupakan substrat-substrat tempat hidup nudibranch di Selat Lembeh. Substrat yang paling dominan atau tumpang tindih antar jenis dari nudibranch adalah DCA. Kata kunci : Nudibranch, Substrat, Lembeh.
KOMPOSISI NEMATOSIT KARANG FUNGIA, Cycloseris vaugani DARI TERUMBU KARANG PANTAI MALALAYANG, MANADO Sagrang, Adelin M; Paruntu, Carolus P; Wagey, Billy Theodorus; Roeroe, Kakaskasen A; Ompi, Medy; Wantasen, Adnan
JURNAL PESISIR DAN LAUT TROPIS Vol 9, No 3 (2021): JURNAL PESISR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.3.2021.36068

Abstract

The purpose of this study was to determine the composition of nematocysts in the body tissue of the coral fungia, C. vaugani.  The location for the collection of C. vaugani colonies was on the coral reefs of the Malalayang coastal area, Manado. This research was carried out in September - December 2020. The observation of nematocysts of C. vaugani was carried out using an Olympus CX41 microscope with a magnification of x100 objective lens which connected to a computer monitor equipped with an optical view 7 application at the Fish Health Environment and Toxicology Laboratory, Faculty of Fisheries and Marine Science, UNSRAT.  The present results showed that C. vaugani had a composition of nematocysts, namely type I microbasic p-mastigophore (MpM-I) of 40.00%, small type II microbasic p-mastigophore (sMpM-II) of 31.11%, small holotrichous isorhizas (sHI) of 24.44 %, large type II microbasic p-mastigophore (lMpM-II) of 2.22%, and large holotrichous isorhizas (IHI) of 2.22%.  sMpM-II is the most dominant nematocyst type of C. vaugani and this type of nematocyst is thought to be used by coral for aggression and killing prey or predator if there is disturbance from the surrounding aquatic environment where the coral lives.  Further research is recommended to study the types and morphology of nematocyst from various species of coral fungia, including C. vaugani to understand the differences in their types and dimension of the nematocyst. Keywords: Composition, Cycloseris vaugani, Fungia, Manado, nematosit
Co-Authors Adnan Wantasen Alex D Kambey Billy Theodorus Wagey Carolus Paulus Paruntu Farnis B Boneka Farnis B. Boneka Indri Manembu Janny D. Kusen Lumingas, Lucky Marpaung, Yehezkiel S.P.H. Medy Ompi N. Gustaf F. Mamangkey Ompi, Pricilia OM Rimper, Joice S Sagrang, Adelin M Sumual, Sarah S. Veibe Warouw