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Management Indicators of Layur Fish (Trichiurus lepturus Linnaeus, 1758) in the Sunda Strait: Indikator Pengelolaan Ikan Layur (Trichiurus lepturus Linnaeus, 1758) di Selat Sunda Rahmat Kurnia; Mennofatria Boer; Ikhlas Yati; Asep Agus Handaka Suryana
Journal of Tropical Fisheries Management Vol 6 No 2 (2022): Journal of Tropical Fisheries Management
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v6i2.44577

Trichiurus lepturus has an important role at the tropic level and is an economically important fish. The purpose of this study was to examine management indicators in the form of time series of catches per effort (CPUE), asymptotic length over time, exploitation rate, ratio of first caught length (Lc) to first gonad maturity length (Lm), and spawning potential ratio (SPR). ). The research was conducted in the Sunda Strait, samples of fish landed at PPP Labuan, Banten. The analytical method used is long frequency analysis, surplus production model, and SPR analysis. The number of male and female fish observed was 396 and 299 respectively. The minimum length of male layur fish is 438 mm and 421 mm for females. The maximum length of the male layur is 843 mm and the female is 773 mm. CPUE results tend to increase from 0.416 in 2014 to 1.043 in 2019. The exploitation rate (E) of fish is 0.85 which indicates that it has experienced over exploitation. Asymptotic length 938.33 mm. The whitefish caught for the first time at Lc = 579.5 mm had an SPR of 13.10% and at Lm = 718.5 mm it had a fairly high SPR of 31.7%. Catch size occurs before layur fish spawn. SPR below the biological reference point. However, in 2019 there was an increase in catches allegedly due to a pause in fishing due to the tsunami in 2018.

Assesmen Risiko Ekologi (ARE) Perikanan Tuna Pole and Line di Flores dan Tonda di Flores dan Pelabuhanratu Yonvitner Yonvitner; Mennofatria Boer; Rahmat Kurnia; Destilawati Destilawati
Al-Kauniyah: Jurnal Biologi Vol 16, No 1 (2023): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v16i1.14475

AbstrakKegiatan perikanan tuna dengan penggunaan alat tangkap pole and line dan tonda berisiko menyebabkan kerentanan (risiko ekologi) yang dapat menganggu keberlanjutan stok tuna. Untuk itu dilakukan penelitian menilai kerentanan menjadi parameter risiko ekologi menggunakan pendekatan analisis productivity dan susceptability analysis (PSA) pada jenis ikan tuna sirip kuning (ukuran baby tuna), tongkol, lemadang, dan cakalang. Pengumpulan data biologi dan ekologi dari alat tangkap pole and line dilakukan di Flores dan pancing tonda di Pelabuhanratu. Selanjutnya, analisis laboratorium dilakukan pada Laboratorium Biologi Perikanan, Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan IPB. Hasil analisis produktivitas dan susceptabilitas alat pole and line untuk ikan baby tuna 1,42 dan ikan tongkol 1,98. Nilai ini menunjukkan tingkat kerentanan dan risiko ekologi pada ikan tongkol tergolong tinggi dan ikan baby tuna masih rendah. Analisis PSA dari alat pancing tonda pada ikan baby tuna diperoleh sebesar 2,34; ikan lemadang sebesar 2,34; dan ikan cakalang 2,18. Nilai ini menunjukkan bahwa kerentanan tinggi dan risiko ekologi pada ketiga jenis ikan tersebut juga tinggi karena penggunaan pancing tonda. Penggunaan alat tangkap pole and line serta pancing tonda pada perikanan tuna menyebabkan tingginya risiko pada ikan tuna sirip kuning (ukuran baby tuna), lemadang, cakalang, dan tongkol. AbstractTuna fishery activities using pole and line fishing gear and tonda have the risk of causing vulnerability (ecological risk) which can disrupt the sustainability of tuna stocks. For this reason, a study was conducted to assess vulnerability which is a parameter of ecological risk using the productivity and susceptibility analysis (PSA) approach to the fish’s species are albacares (baby tuna), mackerel, lemadang, and skipjack. Biological and ecological data collection from pole and line fishing gear was carried out in Flores and trolling and tonda in Pelabuhanratu. Furthermore, laboratory analysis was carried out at the fisheries biology laboratory, Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences IPB. The results of productivity and susceptibility analysis of the pole and line for baby tuna and Euthynnus are 1.42 and 1.98. This value shows the level of vulnerability where the ecological risk of tuna is high and baby tuna also low. The PSA analysis of the tonda for baby tuna was 2.34; lemadang was 2.34; and skipjack was 2.18. This value indicates that the high vulnerability and ecological risk of the three species of fish are also high due to the use of tonda. The use of pole and line fishing gear and tonda lines in tuna fisheries causes a high risk for albacares (baby tuna), mackerel, lemadang, and skipjack.

Analisis Keberlanjutan Perikanan Ikan Terbang di Kabupaten Takalar, Sulawesi Selatan Riana Sri Fitrianti; Moh. Mukhlis Kamal; Rahmat Kurnia
Depik Vol 3, No 2 (2014): August 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Abstract. The objective of the present study was to assess fisheries sustainability of flying fish in Takalar, South Sulawesi using RAPFISH analysis which is composed of four dimensions (ecological, economic, social, and technological).The results of sustainability analysis show that sustainability index in Takalar is 30.93, indicates that the status of flying fish commodities was less sustainable. Monte Carlo analysis results revealed that fisheries sustainability index is strongly stable. Leverage analysis results showed that there were 10 sensitive attributes of 15 existing attributes. Ten sensitive attributes should be of concern to policy makers and become policy priorities in the management of flying fish in Takalar.Hence, arrangement and the implementation of policies on sustainable flying fish fishery in Takalar is cricually needed. Keywords : Sustainability status of Flying fish; RAPFISH; Takalar; South Sulawesi Abstrak. Penelitian ini bertujuan untuk menilai status keberlanjutan sumberdaya ikan terbangdi Selat Makassar.Metode yang digunakan adalah metode analisis RAPFISH dengan menggunakan 4 dimensi yaitu ekologi, ekonomi, sosial, dan teknologi.Hasil penelitian menunjukkan bahwa status keberlanjutan perikanan ikan terbang di Kabupaten Takalardikategorikankurang berkelanjutan karena nilai indeks yang dihasilkan hanya sebesar 30.93. Hasil analisis sensitivitas menunjukkan bahwa dari total 15 atribut yang digunakan, teridentifikasi 10 atribut sensitif yang mempengaruhi nilai indeks keberlanjutan perikanan ikan terbang yaitu: jangkauan daerah penangkapan, ukuran ikan yang tertangkap, ikan yang tertangkap sebelum dewasa, pasar utama telur, harga jual, sumber modal kerja, pemanfaatan traditional ecological knowledge, sistem ponggawa-sawi, pola kerja, dan perubahan alat tangkap bale-bale. Sedangkan 5 atribut yang tersisa dikategorikan tidak sensitif.Dengan demikian, penyusunan dan penerapan kebijakan yang dapat memperbaiki kondisi keberlanjutan perikanan ikan terbang di Kabupaten Takalar dianggap perlu dilakukan.Kata kunci :Status Keberlanjutan Ikan Terbang; RAPFISH; Kabupaten Takalar; Sulawesi Selatan

The dynamics of target fishes resources in coral reef fisheries at coastal area of Ternate Island Faizal Rumagia; Mennofatria Boer; Rahmat Kurnia; Mohammad Mukhlis Kamal
Depik Vol 8, No 2 (2019): August 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

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

Assesmen Risiko Ekologi (ARE) Perikanan Tuna Pole and Line di Flores dan Tonda di Flores dan Pelabuhanratu Yonvitner Yonvitner; Mennofatria Boer; Rahmat Kurnia; Destilawati Destilawati
Al-Kauniyah: Jurnal Biologi Vol 16, No 1 (2023): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v16i1.14475

AbstrakKegiatan perikanan tuna dengan penggunaan alat tangkap pole and line dan tonda berisiko menyebabkan kerentanan (risiko ekologi) yang dapat menganggu keberlanjutan stok tuna. Untuk itu dilakukan penelitian menilai kerentanan menjadi parameter risiko ekologi menggunakan pendekatan analisis productivity dan susceptability analysis (PSA) pada jenis ikan tuna sirip kuning (ukuran baby tuna), tongkol, lemadang, dan cakalang. Pengumpulan data biologi dan ekologi dari alat tangkap pole and line dilakukan di Flores dan pancing tonda di Pelabuhanratu. Selanjutnya, analisis laboratorium dilakukan pada Laboratorium Biologi Perikanan, Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan IPB. Hasil analisis produktivitas dan susceptabilitas alat pole and line untuk ikan baby tuna 1,42 dan ikan tongkol 1,98. Nilai ini menunjukkan tingkat kerentanan dan risiko ekologi pada ikan tongkol tergolong tinggi dan ikan baby tuna masih rendah. Analisis PSA dari alat pancing tonda pada ikan baby tuna diperoleh sebesar 2,34; ikan lemadang sebesar 2,34; dan ikan cakalang 2,18. Nilai ini menunjukkan bahwa kerentanan tinggi dan risiko ekologi pada ketiga jenis ikan tersebut juga tinggi karena penggunaan pancing tonda. Penggunaan alat tangkap pole and line serta pancing tonda pada perikanan tuna menyebabkan tingginya risiko pada ikan tuna sirip kuning (ukuran baby tuna), lemadang, cakalang, dan tongkol. AbstractTuna fishery activities using pole and line fishing gear and tonda have the risk of causing vulnerability (ecological risk) which can disrupt the sustainability of tuna stocks. For this reason, a study was conducted to assess vulnerability which is a parameter of ecological risk using the productivity and susceptibility analysis (PSA) approach to the fish’s species are albacares (baby tuna), mackerel, lemadang, and skipjack. Biological and ecological data collection from pole and line fishing gear was carried out in Flores and trolling and tonda in Pelabuhanratu. Furthermore, laboratory analysis was carried out at the fisheries biology laboratory, Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences IPB. The results of productivity and susceptibility analysis of the pole and line for baby tuna and Euthynnus are 1.42 and 1.98. This value shows the level of vulnerability where the ecological risk of tuna is high and baby tuna also low. The PSA analysis of the tonda for baby tuna was 2.34; lemadang was 2.34; and skipjack was 2.18. This value indicates that the high vulnerability and ecological risk of the three species of fish are also high due to the use of tonda. The use of pole and line fishing gear and tonda lines in tuna fisheries causes a high risk for albacares (baby tuna), mackerel, lemadang, and skipjack.

Analisis Keberlanjutan Perikanan Ikan Terbang di Kabupaten Takalar, Sulawesi Selatan Riana Sri Fitrianti; Moh. Mukhlis Kamal; Rahmat Kurnia
Depik Vol 3, No 2 (2014): August 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.2.1470

Abstract. The objective of the present study was to assess fisheries sustainability of flying fish in Takalar, South Sulawesi using RAPFISH analysis which is composed of four dimensions (ecological, economic, social, and technological).The results of sustainability analysis show that sustainability index in Takalar is 30.93, indicates that the status of flying fish commodities was less sustainable. Monte Carlo analysis results revealed that fisheries sustainability index is strongly stable. Leverage analysis results showed that there were 10 sensitive attributes of 15 existing attributes. Ten sensitive attributes should be of concern to policy makers and become policy priorities in the management of flying fish in Takalar.Hence, arrangement and the implementation of policies on sustainable flying fish fishery in Takalar is cricually needed. Keywords : Sustainability status of Flying fish; RAPFISH; Takalar; South Sulawesi Abstrak. Penelitian ini bertujuan untuk menilai status keberlanjutan sumberdaya ikan terbangdi Selat Makassar.Metode yang digunakan adalah metode analisis RAPFISH dengan menggunakan 4 dimensi yaitu ekologi, ekonomi, sosial, dan teknologi.Hasil penelitian menunjukkan bahwa status keberlanjutan perikanan ikan terbang di Kabupaten Takalardikategorikankurang berkelanjutan karena nilai indeks yang dihasilkan hanya sebesar 30.93. Hasil analisis sensitivitas menunjukkan bahwa dari total 15 atribut yang digunakan, teridentifikasi 10 atribut sensitif yang mempengaruhi nilai indeks keberlanjutan perikanan ikan terbang yaitu: jangkauan daerah penangkapan, ukuran ikan yang tertangkap, ikan yang tertangkap sebelum dewasa, pasar utama telur, harga jual, sumber modal kerja, pemanfaatan traditional ecological knowledge, sistem ponggawa-sawi, pola kerja, dan perubahan alat tangkap bale-bale. Sedangkan 5 atribut yang tersisa dikategorikan tidak sensitif.Dengan demikian, penyusunan dan penerapan kebijakan yang dapat memperbaiki kondisi keberlanjutan perikanan ikan terbang di Kabupaten Takalar dianggap perlu dilakukan.Kata kunci :Status Keberlanjutan Ikan Terbang; RAPFISH; Kabupaten Takalar; Sulawesi Selatan

The dynamics of target fishes resources in coral reef fisheries at coastal area of Ternate Island Faizal Rumagia; Mennofatria Boer; Rahmat Kurnia; Mohammad Mukhlis Kamal
Depik Vol 8, No 2 (2019): August 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

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

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

The dynamics of target fishes resources in coral reef fisheries at coastal area of Ternate Island Faizal Rumagia; Mennofatria Boer; Rahmat Kurnia; Mohammad Mukhlis Kamal
Depik Vol 8, No 2 (2019): August 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

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

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

Analisis Keberlanjutan Perikanan Ikan Terbang di Kabupaten Takalar, Sulawesi Selatan Riana Sri Fitrianti; Moh. Mukhlis Kamal; Rahmat Kurnia
Depik Vol 3, No 2 (2014): August 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.2.1470

Abstract. The objective of the present study was to assess fisheries sustainability of flying fish in Takalar, South Sulawesi using RAPFISH analysis which is composed of four dimensions (ecological, economic, social, and technological).The results of sustainability analysis show that sustainability index in Takalar is 30.93, indicates that the status of flying fish commodities was less sustainable. Monte Carlo analysis results revealed that fisheries sustainability index is strongly stable. Leverage analysis results showed that there were 10 sensitive attributes of 15 existing attributes. Ten sensitive attributes should be of concern to policy makers and become policy priorities in the management of flying fish in Takalar.Hence, arrangement and the implementation of policies on sustainable flying fish fishery in Takalar is cricually needed. Keywords : Sustainability status of Flying fish; RAPFISH; Takalar; South Sulawesi Abstrak. Penelitian ini bertujuan untuk menilai status keberlanjutan sumberdaya ikan terbangdi Selat Makassar.Metode yang digunakan adalah metode analisis RAPFISH dengan menggunakan 4 dimensi yaitu ekologi, ekonomi, sosial, dan teknologi.Hasil penelitian menunjukkan bahwa status keberlanjutan perikanan ikan terbang di Kabupaten Takalardikategorikankurang berkelanjutan karena nilai indeks yang dihasilkan hanya sebesar 30.93. Hasil analisis sensitivitas menunjukkan bahwa dari total 15 atribut yang digunakan, teridentifikasi 10 atribut sensitif yang mempengaruhi nilai indeks keberlanjutan perikanan ikan terbang yaitu: jangkauan daerah penangkapan, ukuran ikan yang tertangkap, ikan yang tertangkap sebelum dewasa, pasar utama telur, harga jual, sumber modal kerja, pemanfaatan traditional ecological knowledge, sistem ponggawa-sawi, pola kerja, dan perubahan alat tangkap bale-bale. Sedangkan 5 atribut yang tersisa dikategorikan tidak sensitif.Dengan demikian, penyusunan dan penerapan kebijakan yang dapat memperbaiki kondisi keberlanjutan perikanan ikan terbang di Kabupaten Takalar dianggap perlu dilakukan.Kata kunci :Status Keberlanjutan Ikan Terbang; RAPFISH; Kabupaten Takalar; Sulawesi Selatan

Spawning Potential Ratio (SPR) Approach as a Management Measure of Skipjack Sustainability Record from Cilacap Fishing Port, Central Java, Indonesia Yonvitner Yonvitner; Mennofatria Boer; Rahmat Kurnia
Jurnal Ilmiah Perikanan dan Kelautan Vol. 13 No. 2 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v13i2.24926

Highlight Research:Spawning potential ratio (SPR) based on the length and frequency data is a substitution approach for data-poor management in fisheriesGonad maturity is an indicator to ensure recruitment and stock sustainability. Therefore important to evaluate the impact of fishing capture on the size and length of fishSpawning potential ratio of skipjack relatively low and potential medium impact on risk sustainability AbstractWhen data is limited, management measurement from fisheries makes it possible to use natural history data to analyze the potential spawning ratio (SPR). This research aimed to determine skipjack fish management measure from the Indian Ocean landed at Cilacap Fishing Port through the SPR approach. The study was conducted in December 2014 to March 2015 using length and reproduction data. The analysis consisted of the size structure, growth rate, and asymptotic length that were analyzed using FISAT II program and length at fifty percent maturity (Lm50). The SPR analysis used SPR software from the application in http://barefootecologist.com.au/lbspr. The size distributions of skipjack obtained were a length of 220-790 mm and an average dominant length of 311-371 mm. The asymptotic length obtained was 831.57 mm, with growth rate and natural mortality of 1.1 and 1.44 per year respectively. The population proportion of 50% reaching gonad maturity (Lm50) was found at a length of 494.75 mm and (Lm95 = 522.39 mm) with an M/k ratio of 1.309. The length selectivity level was caught 50% (SL50 = 317.36 mm) and 95% (SL95 = 373.1 mm). The spawning potential ratio (SPR) ranged from 2-4 with an average of 4% during observation. The SPR potential, which is lower from the standardized threshold of 40%, indicates many young fish populations are caught, and the potential for overfishing is high, high risk, and low sustainability.

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