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ANALISIS KEBERLANJUTAN PERIKANAN ELASMOBRANCH DI TANJUNG LUAR KABUPATEN LOMBOK TIMUR Wahyudin, Iman; Kamal, Mohammad Mukhlis; Fahrudin, Achmad; Boer, Mennofatria
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.042 KB) | DOI: 10.29244/jitkt.v11i1.23412

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ABSTRAKPenelitian ini bertujuan untuk menganalisis status keberlanjutan perikanan elasmobranch di Tanjung Luar, Kabupaten Lombok Timur. Analisis menggunakan metode RAPFISH dengan lima dimensi, yaitu dimensi ekologi, ekonomi, sosial, teknologi dan kelembagaan. Hasil penelitian menunjukkan bahwa status keberlanjutan perikanan elasmobranch di Kabupaten Lombok Timur dikategorikan kurang berkelanjutan karena nilai indeks yang dihasilkan hanya sebesar 46,82. Hasil analisis sensitivitas menunjukkan bahwa dari total 37 atribut yang digunakan, teridentifikasi 15 atribut sensitif yang mempengaruhi nilai indeks keberlanjutan perikanan elasmobranch yaitu: komposisi spesies hasil tangkapan, endangered species, threatened species, dan protected species (ETP), kualitas perairan, kepemilikan asset, alternatif pekerjaan dan pendapatan selain menangkap ikan, tingkat pendidikan nelayan, partisipasi keluarga dalam pemanfaatan hasil perikanan, konflik perikanan, kesesuaian fungsi dan ukuran kapal penangkap ikan dengan dokumen legal, selektivitas penangkapan, penangkapan yang bersifat destruktif, tingkat sinergitas kebijakan dan kelembagaan pengelolaan perikanan, rencana pengelolaan perikanan dan kapasitas pemangku kepentingan. Lima atribut yang tersisa dikategorikan tidak sensitif. Penyusunan dan penerapan kebijakan yang konstruktif perlu dilakukan untuk memperbaiki kondisi keberlanjutan perikanan elasmobranch di Kabupaten Lombok Timur. ABSTRACTThis study aims to analyze the status of sustainability of elasmobranch fisheries in Tanjung Luar, East Lombok Regency. The method used was RAPFISH analysis using 5 dimensions, namely ecology, economics, social, technology and institutions. The results showed that the sustainability status of elasmobranch fisheries in East Lombok Regency was categorized as less sustainable because the index value produced was only 46.82. The results of the sensitivity analysis showed that of the total 37 attributes used, 15 sensitive attributes were identified which affected the index sustainability value of elasmobranch fisheries, namely: composition of catched species, endangered species, threatened species, and protected species (ETP), water quality, asset ownership, alternative employment and income other than fishing, fisherman education level, family participation in fishery product utilization, fisheries conflict, suitability of function and size of fishing vessels with legal documents, catch selectivity, destructive arrests, level of synergy of fisheries management policies and plans, plans fisheries management and stakeholder capacity. While there maining 5 attributes are categorized as insensitive. The development and implementation of constructive policies need to be carried out to improve the condition of the sustainability of elasmobranch fisheries in East Lombok Regency.
ECOLOGICAL IMPACT OF BLEACHING EVENT 2010 IN NORTHERN ACEH Muttaqin, Efin; Kamal, Mohammad Mukhlis; Hariyadi, Sigid; Pardede, Shinta; Tarigan, Sukmaraharja; Campbell, Stuart J
Jurnal Teknologi Perikanan dan Kelautan Vol 5 No 1 (2014): MEI 2014
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3454.031 KB) | DOI: 10.24319/jtpk.5.15-21

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A drastic increasing in Sea Surface Temperature (SST) was happened in Andaman Sea including in Aceh region from April through end of May 2010. The recent escalations of SST have caused mass coral bleaching event in many places in the world including northern Aceh water of Indonesia. Bleaching survey was conducted in Northern Aceh to measure ecological impact of bleaching including bleaching index, coral cover and reef fish abundance. More than 35% bleached coral were died, with tremendous mortality of susceptible genera such as Acropora and Pocillopora. Coral bleaching has impact in declining coral cover in Northern Aceh significantly after coral bleaching and the evidence of loss Acropora in some area. Coral bleaching also impact to coral fishes, where fishes abundance especially coralivorous fishes has declining significantly betwen 2009 and 2011 also 2013. The 2010 bleaching event is one of the most severe events reported for Indonesia including in Northern Aceh.
PRODUKSI SERASAH MANGROVE DI PESISIR TANGERANG, BANTEN Aida, Gilang Rusrita; Wardiatno, Yusli; Fahrudin, Achmad; Kamal, Mohammad Mukhlis
Jurnal Ilmu Pertanian Indonesia Vol. 19 No. 2 (2014): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (710.796 KB)

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Mangrove ecosystem plays an important role in contributing the organic matter from litter produced which is amajor link of the food web in mangrove ecosystem. The research was conducted to estimate litterfall production ofmangroves in Tangerang coastal area. The structure and composition of the mangrove ecosystem consists ofAvicenia marina, Avicenia alba, Rhizophora mucronata, and Sonneratia caseolaris with density and diameter ofmangrove trees about 3 23 tress/100 m2 and 4.8 38.2 cm, respectively. The results of station groupings based onthe structure and composition of mangrove with environmental parameters showed the highest production oflitterfall generated by group II (station 4; consists of Avicenia marina and Rhizophora mucronata), followed bygroup III (station 6; consists of Sonneratia caseolaris) and group I (station 1, 2, 3, and 5; of Avicenia alba, Aviceniamarina, and Rhizophora mucronata). Litterfal production of group II reached 3.86 ± 0.22 g/m2/day, followed by groupIII and group I (3.63 ± 2.2 g/m2/day and 2.88 ± 0.99 g/m2/day, respectively). Overall, the total production of litterfallper day in the coastal area reached 3.45 g/m2/day with leaf as the main component (>80%), followed by twigs andreproductive organs.
Coral Settelment on Concrete Artifical Reefs in Pramuka Island Eaers, Kepulauan Seribu, Jakarta and Management Option Aziz, Arif Miftahul; Kamal, Mohammad Mukhlis; Zamani, Neviaty Putri; Subhan, Beginer
Journal of Indonesian Coral Reefs Vol 1, No 1 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Latest stage development of recruit coral community in concerete artificial reefs were observed for nine months (from October 2009 to July 2010) by visual cencus and underwater photography methods. Amounts of 10 units of concrete artifical reef deployed in Pramuka Island waters and Gosong Pramuka in 2011 were used as an objects in this reseacrh. As a comparation, the conditios of coral coverand reef fishes in natural reef were observed by line intercept transcet, visual census, and underwater photography methods. In order to measure coral coberage area  we used a ImageJ 1.42q software. In march 2010, amounts of 457 coral colonies from 21 genera and 216 coral colonies from 16 genera were found on artifical reefs surface in Station 1 (Pramuka Island) and Station 2 (Gosong Pramuka) respectively. Number pf recruit coral colonies was dominated by genus Porites. Pocillopora, and Chypastrea. In july 2010, the precentage of coral cover on cencrete artifical refs reaches 41.46 ±13.37% (±SD) in Station 1 and 20. ±6.08% (mean ±SD) in Station 2, while the percentage of coral coverage on natural reefs were 23.14% and 40.43% in Station 1 and 2 respectively. Genus Porites become the most dominant genus in both of stations in terms recruit coloby abudance and percent cover. This result shows that concrete artificial reefs can effectively use to create new habitat of corals, coral fishes and other biota particularly in degraded coral reefs ecosystem.
LENGTH AT FIRST MATURITY, SPAWNING TIME, AND REPRODUCTIVE OUTPUT IN THE FEMALES OF HAMILTON’S ANCHOVY (THRYSSA HAMILTONII GRAY, 1835) Kamal, Mohammad Mukhlis; Ernawati, Yunizar; Dewi, Nina Nurmalia
Jurnal Biologi Tropis Jurnal Biologi Tropis Vol.20 No.1 Januari - April 2020
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i1.1623

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Abstract: The Hamilton?s anchovy (Thryssa hamiltonii Gray, 1835) is one of main target species in Indonesian small pelagic fishery. This engraulids member is characterized by short lifespan and fast reproductive cycle. The research aims were to explore the reproduction aspects of the females Hamilton?s anchovy in terms of changes in length at first maturity, spawning seasons, and fecundity as well as egg diameter as reproductive output. Fish was collected weekly during 2009 at fish landing site at Gebang Mekar, Cirebon. The fish was length measured, after which ovaries staged for gonadal maturity stage (GMS), fecundity, and eggs diameter. Length frequency data was all linked to this reproductive aspects. The results showed that Lm was 171.5 ± 1.62 mm, comparable to annual calculation of 171.05 ± 0.01 mm, Lc largely tend to smaller than Lm which indicated to unsustainable fishing. Fish spawns monthly with fecundity range between 3,456 ? 15,843 (8,261 ± 2,776 eggs), it might be categorized as high fecundity fish relative to its body size. The distribution of eggs diameter showed 2-3 modus, i.e. they are partial spawner fish. The discrepancies in reproductive ouput is suggested to be influenced by seasons which characterized by different environmental conditions. Keywords: Hamilton?s anchovy, females, length, spawning, reproductive output
THE DYNAMICS OF TARGET FISHES RESOURCES IN CORAL REEF FISHERIES AT COASTAL AREA OF TERNATE ISLAND Rumagia, Faizal; Boer, Mennofatria; Kurnia, Rahmat; Kamal, Mohammad Mukhlis
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 8, No 2 (2019): August 2019
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.2.13358

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Abstract. As one of the coastal ecosystem, coral reef ecosystem is a magnificent marine ecosystem, where their species richness and composition play an important role for the ability of coral reef ecosystem to respond to the fishing activity and other stressors, where fishing has impacted the fish community, target or non-target reef fish species. The dynamic of reef fish resources, especially the target species, become one of the aspects that must be considered in the management and utilization of the fisheries resources in the coral reef ecosystem and their surrounding area. The purpose of the study was to analyze the dynamics of the target fish in the coral reef fishing activity at the coastal area of Ternate Island, from the growth, mortality and exploitation ratio aspect. The research was conduct from April to August 2018 in the coastal area of Ternate Island. The data sampling was growth parameters data through length and weight measurement. Total sample measure along the research time was 6245 sample (consist of seven family and 11 species). The result shows that the target fish have asymptotic length (L?) range from 263.16?483.16 mm, with growth coefficient (K) ranging from 0.61?0.92 per year. The theoretic age at length 0 (t0) ranges from minus 0.0825?0.1669 year (equal to 30-61 day). The fishing mortality rate (F) is lower than the natural mortality rate (M), which resulting the exploitation rate (E) for the target fish mostly under 50%, which indicated that the utilization of the reef fishes in the coastal area of Ternate Island is still under-exploited.Keywords: Exploitation rate, Growth parameters, Length-weight relationship, Mortality rate, Stock assessment
Pengaruh Laju Eksploitasi Terhadap Keragaan Reproduktif Ikan Tembang (Sardinella gibbosa) di Perairan Pesisir Jawa Barat Ernawati, Yunizar; Kamal, Mohammad Mukhlis
JURNAL BIOLOGI INDONESIA Vol 6, No 3 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i3.3146

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ABSTRACTEffect of Exploitation Rate on Reproductive Performance in Goldstripe Sardinella (Sardinellagibbosa) in West Java Coastal Waters. The research objective was to explore the effect ofexploitation rate on reproductive performance of goldstripe sardinella (Sardinella gibbosa).Three sites located in West Java coasts were selected representing coastal areas adjacent tothe Indian Ocean (Palabuhan Ratu), Java Sea (Blanakan), and Sunda Strait (Labuan), for fishcollection during May-July 2009. Fish samples were collected and the length was measuredprior to sex determination, observation on gonad morphology as well as gonad maturitydetermination, examination on fecundity and eggs diameter, and protein content analysis.Estimation on exploitation rate (E) was calculated based on length data performance fromwhich the result was correlated with reproductive parameters including the length at firstmaturity, fecundity, eggs distribution and diameter, and protein content analysis. By sitesbasis, variation in E was consistently shown only by eggs protein content in which the lowerthe E estimation the higher the protein contents. However, in response to E, there wereinconsistencies shown by the length at first maturity, fecundity, and eggs diameter. Suchinconsistencies are thought to be associated with population structure of matured female, andvariability in the habitat conditions which determines the magnitude of fish stock.Key words: Sardinella gibbosa, exploitation rate, reproductive performance
ANALISIS HUBUNGAN PANJANG BERAT PADA IKAN HERMAPHRODIT : KERAPU SUNU (PLECTROPOMUS LEOPARDUS) DAN KERAPU MACAN (EPINEPHELUS FUSCOGUTTATUS) Setiawan, Haris; Fahrudin, Achmad; Kamal, Mohammad Mukhlis
Jurnal Biologi Tropis Jurnal Biologi Tropis Vol.19 No.2 Juli - Desember 2019
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v19i2.1162

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Abstrak : Penelitian ini bertujuan untuk mengeksplorasi hubungan panjang berat dua spesies ikan kerapu hermafrodit, yaitu kerapu sunu (Plectropomus leopardus) dan kerapu macan (Ephinephelus fuscoguttatus). Sebanyak 1.263 individu ikan yang terdiri dari 609 dan 654 spesies pertama dan kedua, masing-masing dikumpulkan dari perairan Wangi-Wangi dan Karang Kaledupa Taman Nasional Wakatobi selama September 2018 hingga Februari 2019. Ikan dikumpulkan secara acak yang merupakan hasil tangkapan pancing  dan tombak. Hasil  kedua spesies menunjukkan pola pertumbuhan alometrik (p <0,01 untuk keduanya) di mana nilai b masing-masing adalah 2,46 dan 2,73. Berdasarkan koefisien korelasi (R2), ditemukan bahwa variasi berat mampu menjelaskan 90% lebih panjang tubuh ikan. Berdasarkan panjang ikan saat tertangkap dan panjang pertama kali matang gonad, ditemukan bahwa betina P. leopardus sebagian besar ditangkap sebelum matang gonad (> 70%), sedangkan E. fuscoguttatus untuk kategori yang sama berada pada persentase yang lebih rendah (<50%). Langkah-langkah pengelolaan pada spesies hermafrodit dapat difokuskan pada proporsionalitas antara betina dan jantan terhadap keberhasilan reproduksi.Kata Kunci : Panjang Berat, E. fuscoguttatus, P. leopardusAbstract : The present research was aimed to explore the length-weight relationship-based growth of two hermaphrodite groupers, leopard coral grouper (Plectropomus leopardus) and tiger grouper (Ephinephelus fuscoguttatus). A total of 1,263 individual fishes comprising 609 and 654 individuals of these two species respectively, were collected from Wangi-Wangi and Kaledupa reef in Wakatobi National Park from September 2018 to February 2019. Fish were randomly sampled from catches that used hook-and-lines and spears. The results found that both species follow allometric growth patterns (p<0,01 for both) of which b values were, respectively, 2,46 and 2,73. Based on coefficient correlation (R2), it was found that weight variability is able to explain more than 90% of length. By comparing length at catch and length at first maturity, it was found that females of P. leopardus were largely caught at pre-mature stage (>70%), while for E. fuscoguttatus <50% of females were pre-mature. We suggest that management measures for hermaphrodite species should focus on the proportionality between females and males towards their reproductive success.Keywords : Length-weight relationship, E. fuscoguttatus, P. leopardus
AUTENTIKASI SPESIES IKAN KERAPU BERDASARKAN MARKA GEN MT-COI DARI PERAIRAN PEUKAN BADA, ACEH Kamal, Mohammad Mukhlis; Hakim, Agus Alim; Butet, Nurlisa Alias; Fitrianingsih, Yulia; Astuti, Rika
Jurnal Biologi Tropis Jurnal Biologi Tropis Vol.19 No.2 Juli - Desember 2019
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v19i2.1245

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Abstrak : Variasi bentuk dan pola pewarnaan tubuh ikan kerapu (Famili Serranidae) sangat variatif, sehingga pengenalan spesies secara morfologis sering tidak akurat. Penelitian ini bertujuan untuk mengautentikasi ikan kerapu dengan menggunakan marka gen COI. Contoh ikan kerapu yang diamati berjumlah 29 ekor yang dikumpulkan dari tiga tempat pendaratan ikan di Perairan Peukan Bada, Propinsi Aceh. Secara karakter morfologis, ikan kerapu tersebut teridentifikasi lebih dari 8 spesies. Untuk analisis DNA, sebanyak 30 mg daging sirip dari setiap ikan contoh diambil untuk dilakukan isolasi dan ekstraksi DNA, kemudian visualisasi elektroforesis dan fragmentasi DNA gen COI dengan metode PCR-sekuensing. Setelah diekstraksi, diperoleh 20 sampel DNA yang tervisualisasi dengan baik, yang dari jumlah tersebut terdapat 16 sampel dapat diamplifikasi. Hasilnya menunjukkan terdapat 6 spesies yang terautentikasi. Kelompok pertama adalah Variola albimarginata, Cephalopholis urodeta, dan C. sexmaculata dengan tingkat kemiripan ? 97%. Berikutnya C. boenak, Epinephelus merra, dan Scolopsis vosmeri tingkat kemiripannya ? 97%. Bila dibandingkan hasil autentikasi DNA, hasil penelitian menunjukkan bahwa 13 sampel atau > 80% tidak teridentifikasi dengan benar secara morfologis. Berdasarkan jarak genetik, pohon filogeni membentuk 2 clade antara Serranidae dan Nemipteridae. Hasil penelitian menunjukkan bahwa penggunaan marka gen COI sangat efektif untuk autentikasi spesies yang dapat dijadikan sebagai instrumen dalam pemanfaatan dan pengelolaan ikan kerapu.Kata kunci : kerapu, variasi morfologi, gen MT-COI, autentikasi.Abstract : The groupers (family Serranidae) show high variability both in body shapes and coloration leads to highly morphological-based misidentification. The research was aimed in autenthication of the grouper species using MT-COI gene. A total of 29 grouper fishes were collected from three fish landing sites of Peukan Bada, Aceh Province. These fishes were morphologically identified from which more than 8 species were obtained. A 30 mg of the fin meat of each sample was taken for DNA extraction, isolation, electrophoresis visualization, and DNA fragmentation of COI gene using PCR-sequenching.  There were 20 DNA samples was clearly visualized of which 16 has been proceeded for amplification. The results showed that V. albimarginata, C. urodeta, and C. sexmaculata showed ? 97% similarity, whereas C. boenak, E. merra, dan S. vosmeri with ? 97% similarity. Based on phylogenetic tree analysis there was 2 clearly different clades separating family of Serranidae and Nemipteridae. The use of MT-COI gene was effective and accurate tool in species authentication which could be used as an instrument for utilization and management of the grouper species.Keywords : groupers, morphological variation, MT-COI gene, autenthication.
REPRODUCTIVE BIOLOGY OF THE RED BIGEYE (Priacanthus macracanthus Cuvier, 1829) IN PALABUHANRATU BAY, INDONESIA Jabbar, Meuthia Aula; Kamal, Mohammad Mukhlis; Boer, Mennofatria; Suman, Ali; Suyasa, I Nyoman
Indonesian Fisheries Research Journal Vol 24, No 1 (2018): (June) 2018
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (889.494 KB) | DOI: 10.15578/ifrj.24.1.2018.25-36

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The reference point of reproductive biology play an important roles in developing a baseline information for fishery management. Different waters will provide different overview of fisheries related to its biological aspects. The red bigeye (Priacanthus macracanthus) is one of economically important demersal fish species in Indonesia. To support the biological status of this species, a regular field observation were carried out during May 2016 to April 2017 in Palabuhanratu bay, south of West Java. The objective of this study is to estimate the spawning season and potential reproductive stages including to evaluate how the key management related to the species and its gear selectivity. Numbers of red bigeye (Priacanthus macracanthus) specimen was collected from bottom gillnetter and hand liner. Basic information related to length-weigth, bio-reproduction (maturity) were collected regularly to determine GSI, Fecundity and its impact of fishing (Lc, Lm) to evaluate the recent stock status. The result showed sex ratio no significant differences between males and females except in September to December. The growth pattern indicated negative allometric. The predicted of spawning seasons were around June-July and December-January. Mean of fecundity was estimated to be 230,000 ± 178,000 eggs. Management keys were obtained i.e. length at first maturity (Lm) value was to be 21.9 cm TL which is smaller than length at first capture (Lc) 22.4 cm TL for bottom gill netter and 23.1 cm TL for average fishes caught by hand liner. Therefore it is recommended to close the waters in the bay area during the spawning period. In the case of catch, it is important to apply the precautionary approach with emphasizes to the size of fish allowed to be captured more than the Lm value (above 21.9 cm TL).