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Geochronology of Cadmium (Cd), Cuprum (Cu), and Arsenics (As) in Annual Band of Coral Porites lutea at Pantai Kondang Merak, Malang Oktiyas Muzaky Luthfi; Sigit Rijatmoko; Andik Isdianto; Daduk Setyohadi; Alfan Jauhari; Ali Arman Lubis
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i2.19991

Abstract

Coral reef is a massive natural building block that mainly composed of hard coral. In ecological view coral reef is the center of biological activity for shelter, foraging and feeding place. Porites lutea is a common coral in reef flat area such as in Pantai Kondang Merak. This coral can form a massive with hillocky colony surface and has a slow linear extension rate, that made this coral has long longevity. The annual growth band of coral skeleton provide information of pollutants in the coastal extending back over several years ago due to ability of coral aragonite traped trace metal from environment. The aim of this research was to determine the concentration of trace metals of Cd, Cu and As along with the coral annual banding. The heavy metals detection was performed using ICP-OES (iCAP 7400 Series). The concentration of Cd, Cu and As in sample 1 (KM1) were 2.236 mg/kg, 9.726 mg/kg, and 2.474 mg/kg, while sample 2 (KM2) were 1.989 mg/kg, 19.157 mg/kg, and 2,064 mg/kg respectively. Two ways mechanism of trace metals to be trapped in the coral skeleton are by direct mechanism when trace metals in a form dissolved ion that were uptaken by coral then stored into coral skeleton and by indirect mechanism when particulate metals ingested by plankton then eaten by coral through coral tissue. The tracing of heavy metal in coral is provided important information of environment condition of the sea from 2009 - 2015 that may be used for authority decision regarding pollutant ambient in the sea environment.
Population Dynamics of Bullet Tuna (Auxis rochei Risso 1881) from the Indian Ocean, West Nusa Tenggara, Indonesia Evron Asrial; Ruly Isfatul Khasanah; Fathurriadi Fathrurriadi; Yasir Arapat; Usma Kurniawan Hadi; Lalu Achmad Tan Tilar Wangsajati Sukmaring Kalih; Lalu Samsul Rizal; Mita Ayu Liliyanti; Erwin Rosadi; Daduk Setyohadi; Muhammad Junaidi; Ishani Nelunika Rathnayake
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.v13i2.26017

Abstract

Highlight Research:The bullet tuna (Auxis rochei) was identified and analysed.The length at first maturity (Lm) of bullet tuna (Auxis rochei) was analyzedThe eligibility status of bullet tuna (Auxis rochei) has been analyzed and estimatedThe LWR curve can be used to estimate age groups of fish compared to the sigmoid curveThe CF cannot be automatically used to estimate fish worth selling AbstractThe bullet tuna (Auxis rochei), BLT or tongkol lisong (Indonesian) is a species of neritic tuna which is one of the target fish for small scale fishers. The problem of bullet tuna fisheries was that it has reached overexploitation and the immature bullet tuna are still caught. This study aimed to assess the population dynamics of the BLT and its size composition caught by small scale fishers in the Indian Ocean, West Nusa Tenggara area was carried out in Bangko-Bangko (West Lombok), Cemplung Beach (South Sumbawa) and Tanjung Luar Fishing Port (East Lombok) between July 2019 and June 2020. The data was derived from the measurement and weighing results of 1,217 BLT collected from the respective collector traders at each sampling location. The growth pattern of BLT was isometric () which meant the ideal body shape (mesomorph) and length at first maturity (FLm) was 31.11 cm. The length-weight relationship curve showed that BLT was in an immature age group (adolescent fish). Meanwhile, the composition of BLT is worth selling (Condition Factor > 1.00), fit for catch (FLc / FLm > 1.00) and worthy of maturity (FLc > FLm), respectively 99.92%, 0.82% and 0.00%. The BLT fish composition indicates that the stocks of resources and populations do not support current sustainable fisheries management.
Harvest Control Rules of Multispecies Scads (Decapterus spp.) Fishery in Blitar Waters, East Java Ledhyane Ika Harlyan; Shobriyyah Afifah Nabilah; Daduk Setyohadi; Muhammad Arif Rahman; Supapong Pattarapongpan
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 1 (2022): 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.v14i1.30688

Abstract

Highlight ResearchThe feedback harvest control rule resulted in the lowest allowable biological catch estimation than the surplus production models.  The feedback harvest control rule adapted the recent years of historical catch data.The surplus production models might result in over or under catch estimation, not considering the recent data.This multispecies fishery could not provide species specific data as surplus production models required; therefore, it might be better to use the feedback harvest control rule that has been validated for multispecies fisheries. AbstractScads fishery in Blitar waters is a multispecies fishery applying harvest control rules (HCRs) from conventional single-species approaches which technically, may not be applicable to employ in such mixed-species data composed from the multispecies fishery. The feedback HCR is an alternative validated harvest control rule that can be applied for a multispecies fishery. The aim of this study was to technically compare the application of the feedback HCR and conventional single species approaches in terms of estimating the future allowable biological catch (ABC). Therefore, in this study, ABC was estimated by applying three HCRs, the feedback HCR, and two conventional HCRs which was based on single-species approaches applying surplus production models, Schaefer Model and Fox model into catch and effort of scads fisheries data series of 2011 – 2020. The results showed that the ABC estimation of the feedback HCR was a half lower than that of both conventional models. It was biologically safer to apply the feedback HCR to set the annual total allowable catch (TAC) than the other two HCRs. The feedback HCR presented an initial step toward sustainably managing multispecies fisheries while dealing with data-limited conditions.
PERAMALAN HASIL TANGKAP IKAN LAYUR DI PELABUHAN PERIKANAN NUSANTARA (PPN) PRIGI DENGAN MODEL MULTISCALE AUTOREGRESSIVE (MAR) Setyohadi, Daduk; Putrindi, Handayu; Rahman, Muhammad Arif
JFMR (Journal of Fisheries and Marine Research) Vol. 6 No. 2 (2022): JFMR on August
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2022.006.02.6

Abstract

Ikan layur merupakan sumberdaya ikan demersal dominan dan merupakan komoditas eksport dengan permintaan tinggi di Pelabuhan Perikanan Nasional (PPN) Prigi. Beberapa tahun terakhir terjadi tekanan penangkapan besar-besaran dari nelayan setempat, sehingga menyebabkan semakin menurunnya produksi ikan layur per unit alat tangkap pancing sebagai alat tangkap standar untuk keperluan eksport. Peramalan produksi ikan layur satu tahun ke depan akan dapat membantu rencana pengelolaan sumberdaya perikanan layur. Penelitian ini menggunaan transformasi wavelet untuk meramalkan produksi ikan layur, yaitu dengan membentuk model Multiscale Autoregressive (MAR) yang prediktornya diperoleh dari dekomposisi Maximal Overlap Discrete Wavelet Transform (MODWT) dengan filter wavelet Haar. Model peramalan wavelet terbaik dibentuk dari model MAR orde 2 yang prediktornya diperoleh melalui dekomposisi MODWT level 1, yaitu setelah data distasionerkan secara detrending. Hasil peramalan produksi ikan layur di PPN Prigi untuk satu tahun ke depan (September 2018 sampai dengan Agustus 2019) akan tetap mengalami fluktuasi yang berkisar antara 4.94 sampai dengan 5.15 kilogram.
Alat Tangkap yang Ditinggalkan, Hilang, dan Dibuang: Studi Kasus Alat Tangkap Jaring Rajungan dan Bubu Rajungan pada Perikanan Rajungandi Demak Jawa Tengah: Abandoned, Lost, and Discarded Fishing Gear: A Case Study of Swimming Crab Fisheries Tumulyadi, Agus; Setyanto, Arief; Bintoro, Gatut; Lelono, Tri Djoko; Isdianto, Andik; Setyohadi, Daduk; Amanda Rifan Fathoni; Rafif Zul Fahmi
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 2 (2024): JFMR on July
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2024.008.02.6

Abstract

Rajungan merupakan salah satu komoditas unggulan sektor perikanan tangkap di perairan yang ditangkap menggunakan jaring insang dan bubu / bubu lipat. Potensi hilangnya kedua alat tangkap tersebut saat dioperasikan sangat tinggi, baik disebabkan oleh faktor cuaca, kondisi dasar perairan maupun interaksi dengan alat tangkap lain. Tertinggalnya alat tangkap di perairan yang lebih dikenal dengan istilah Abandoned, Lost or Discarded Fishing Gear (ALDFG) memberikan kontribusi signifikan terhadap melimpahnya marine debris (sampah laut) di laut yang memberikan dampak negatif terhadap kelestarian sumberdaya ikan, kualitas perairan dan membahayakan keselamatan pelayaran. Meskipun demikian, belum ada upaya mitigasi dan pengurangan ALDFG di perairan laut. Penelitian ini bertujuan untuk melakukan identifikasi penyebab tertinggalnya alat tangkap pada perikanan rajungan di perairan laut.  Pengumpulan data dilakukan di kabupaten Demak, Jawa Tengah pada bulan Agustus dan September 2023 dengan metode wawancara terhadap responden yang dipilih secara sengaja di sekitar pendaratan nelayan rajungan, yang hasilnya kemudian dianalisis secara deskriptif. Studi ini menemukan bahwa sumber sampah laut yang berasal dari alat tangkap rajungan khususnya adalah disebabkan oleh alat tangkap yang hilang bukan karena sengaja dibuang ke laut. Alat tangkap yang hilang terjadi karena faktor alam (23%) dan atau diterjang oleh pengoperasian alat tangkap jenis lainnya (27%).   Blue swimming crab is one of the leading commodities in the capture fisheries sector in waters which are caught using gill nets and traps/bubu lipat. The potential for loss of these two fishing gears during operation is very high, both due to weather factors, bottom conditions of the waters and interactions with other fishing gears. Leftover fishing gear in the waters known as Abandoned, Lost or Discarded Fishing Gear (ALDFG) contributes significantly to the abundance of marine debris in the sea which has a negative impact on the preservation of fish resources, water quality and endangers shipping safety. Even so, there have been little efforts to mitigate and reduce ALDFG in marine waters. This study conducted at Demak of Central Java from August to September 2023 which aims to identify the causes of fishing gear debris in crab fisheries in marine waters. Data collection was carried out by in-depth interviews with respondents who were deliberately selected around the crab fishermen's landings, the results of which were then analyzed descriptively. This study found that the source of marine debris originating from swimming crab fishing gear was caused by lost fishing gear, not because it was intentionally thrown into the sea. Lost fishing gear occurs due to natural factors and is affected by the operation of other types of fishing gear by 23% and 27% respectively.
HARVEST CONTROL RULES OF DEMERSAL FISHERIES IN BRONDONG WATER, LAMONGAN, EAST JAVA Harlyan, Ledhyane Ika; Lianingrum, Yulis Dwi; Setyohadi, Daduk; Tumulyadi, Agus; Muntaha, Ali
Journal of Environmental Engineering and Sustainable Technology Vol 8, No 2 (2021)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2021.008.02.3

Abstract

Multispecies demersal fisheries management in Brondong waters have been managed by conventional single-species approach for determining catch quota or annual allowable biological catch (ABC). This might be impractical since a multispecies fishery should be managed by a multispecies fisheries management approach. The feedback harvest control rule (HCR) is a harvest control rule that has been validated and might be applied for a multispecies fishery. The aim of this study is to compare the conventional single-species approach and the feedback HCR in order to estimate the annual ABC. In this study, the annual ABC was calculated by applying two HCRs, the conventional single-species approach that applying the Schaefer surplus production model into the catch and effort of the dominant demersal fisheries data series of 2011 – 2020. The results showed that the Schaefer model provided the annual ABC higher than the feedback HCR estimation. Therefore, it was safe to apply the feedback HCR than the Schaefer model to determine the annual ABC. Under data-limited conditions, the feedback HCR might be an option to manage multispecies fisheries.
Karakteristik Biologi dan Potensi Sumberdaya Ikan Layang Deles (Decapteraus Macrosoma) di Perairan Prigi Jawa Timur: Biological Characteristics and Resource Potential of Layang Deles (Decapteraus Macrosoma) in Prigi Waters,East Java Sari, Wahida Kartika; Utami, Ririn; Aisyah, Berdita Nur; Setyohadi, Daduk; Lelono, Tri Djoko
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 3 (2024): JFMR on November
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2024.008.03.15

Abstract

Pelabuhan Perikanan Nusantara (PPN) Prigi merupakan salah satu pusat kegiatan perikanan tangkap terbesar di Jawa Timur yang terletak di perairan Samudera Hindia dan masuk dalam Wilayah Pengelolaan Perikanan Negara Republik Indonesia (WPP-NRI 573). Perairan ini didominasi oleh sumberdaya ikan pelagis seperti ikan layang deles (Decapterus macrosoma). Tingginya tingkat pemanfaatan ikan layang di Prigi menunjukkan potensi ekonomi yang besar, namun juga mengindikasikan ancaman terhadap keberlanjutan sumberdaya jika tidak dikelola secara bijak. Penelitian ini perlu dilakukan untuk memberikan pemahaman lebih dalam mengenai aspek biologi ikan layang deles, mengingat tingginya tingkat pemanfaatan yang berpotensi mengancam keberlanjutan sumber daya perikanan jika tidak dikelola dengan baik. Fokus utama penelitian meliputi hubungan panjang-berat, tingkat kematangan gonad (TKG), indeks kematangan gonad (IKG), dan nisbah kelamin ikan layang deles. Penelitian menggunakan metode deskriptif kuantitatif dengan pengambilan sampel secara acak sederhana dari ikan yang didaratkan nelayan menggunakan alat tangkap purse seine. Hasil penelitian menunjukkan pola pertumbuhan ikan layang deles adalah allometrik negatif dengan nilai b sebesar 2,038, yang mengindikasikan pertumbuhan panjang lebih dominan dibandingkan berat. Tingkat kematangan gonad menunjukkan variasi dari TKG I hingga V, dengan nilai indeks kematangan gonad betina lebih tinggi dibandingkan jantan. Analisis nisbah kelamin menunjukkan proporsi ikan jantan dan betina cenderung seimbang dengan hasil uji chi-square yang tidak signifikan. Penelitian ini diharapkan berkontribusi pada pengelolaan perikanan berkelanjutan di WPP-NRI 573.   Prigi Perikanan Nusantara Port (PPN) is one of the largest capture fisheries centres in East Java, located in the waters of the Indian Ocean and included in the State Fisheries Management Area of the Republic of Indonesia (WPP-NRI 573). These waters are dominated by pelagic fish resources such as deles (Decapterus macrosoma). The high level of kite fish utilisation in Prigi indicates great economic potential, but also indicates a threat to the sustainability of the resource if not managed wisely. This research needs to be conducted to provide a deeper understanding of the biological aspects of deles swallow, given the high utilisation rate that could potentially threaten the sustainability of fisheries resources if not managed properly. The main focus of the research included length-weight relationship, gonad maturity level (TKG), gonad maturity index (IKG), and sex ratio of deles flyfish. The study used descriptive quantitative method with simple random sampling of fish landed by fishermen using purse seine gear. The results showed that the growth pattern of Deles flyfish is negative allometric with a b value of 2.038, which indicates that length growth is more dominant than weight. The level of gonad maturity showed variations from TKG I to V, with a higher gonad maturity index value for females than males. Sex ratio analysis showed that the proportion of male and female fish tended to be balanced with non-significant chi-square test results. This research is expected to contribute to sustainable fisheries management in WPP-NRI 573.
LENGTH-WEIGHT RELATIONSHIP AND CONDITION FACTOR OF FOURFINGER THREADFIN (Eleutheronema tetradactylum Shaw, 1804) IN SEDATI, SIDOARJO Rahman, Muhammad Arif; Wiadnya, Dewa Gede Raka; Harlyan, Ledhyane Ika; Setyohadi, Daduk; Mahsuna, Inna Rohmatul
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.7

Abstract

The fourfinger threadfin, Eleutheronema tetradactylum is one of economic demersal species in Indonesia. Information of its biology was needed to ensure the sustainable fisheries management of this species. This study aimsto estimate the lengthweight relationship and condition factor of E. tetradactylum landed in Sedati, Sidoarjo, East Java. In total, 649 samples were randomly collected from Sedati Fishing Base during the study. The results indicated that E. tetradactylum has negative allometric growth pattern (b = 2.8, p<0.05), means the growth of length was faster than weight. In addition, the average value of relative weight condition factor (kn) was 1.01, which is greater than or equal to 1, means E. tetradactylum live in good growth conditions. This finding contributes to managing E. tetradactylum fishery in the north Java waters, especially in East Java. As this study was conducted from unsexed samples, future research with focuse on sexed samples is suggested to give more comprehensive result.
THE CHARACTERISTICS OF SHRIMP FISHERIES IN KOTABARU, SOUTH KALIMANTAN, INDONESIA Harlyan, Ledhyane Ika; Setyohadi, Daduk; Tumulyadi, Agus; Sukandar, Sukandar; Maulana, Almaas Zain; Lathif, Adib Hisyam; Fanani, Zainal
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.5

Abstract

The shrimp fishery in Kotabaru, South Kalimantan, is a small-scale fishery that supplies raw materials to PT. Sekar Laut, Tbk, a company specializing in shrimp cracker production for the global market. Despite its significance, limited research has been conducted on the sustainability of this fishery. This study aims to analyze the key characteristics of the shrimp fishery in Kotabaru waters. Data were collected from January to August 2024 in Kotabaru, South Kalimantan, and subjected to various analyses, including species composition, length-weight relationships for several shrimp species, and identification of shrimp fishing grounds. The results reveal that banana shrimp and yellow shrimp are the predominant species within the catch, both exhibiting negative allometric growth patterns. The fishery’s most productive fishing location is identified in Pantai Village, highlighting this area as a potential focus for sustainable management initiatives. These findings underscore the need for ongoing monitoring and targeted management practices to promote the long-term sustainability of the shrimp fishery in Kotabaru.
ESTIMATION OF BIOLOGICAL PARAMETERS OF SQUID (LOLIGO SPP) CAUGHT IN THE WATERS OF TUBAN REGENCY Setyohadi, Daduk; Kartikasari, Wahida; Setyanto, Arief; Wiadnya, Dewa Gede Raka; Harlyan, Ledhyane Eka; Sunardi, Sunardi; Nabilla, Azma Salma
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.8

Abstract

Squid (Loligo spp.) belongs to the Cephalopoda group (squid, cuttlefish, octopus) and is one of the primary export commodities in the fisheries sector. National squid production increased by 5.5%, from 193,583.82 tons in 2020 to 204,156.28 tons in 2021. However, the potential sustainable catch in the Java Sea (WPPNRI 712, including the Madura Strait) has experienced an average annual decline of 1.9% from 2017 to 2022, dropping to 66,608 tons in 2022. This study aims to identify the species composition of squid, analyze length-weight relationships, and determine the mantle length at first gonad maturity (Lm). Data were obtained from fixed lift-net catches and analyzed in the Fisheries Exploitation Laboratory of Universitas Brawijaya. The results identified two main species: Photololigo duvaucelli (Indian squid) and Sepioteuthis lessoniana (bigfin reef squid). The composition of squid catches was 1.29% in purse seine operations and 2.91% in payang (seine net) operations. The length-weight relationship of both species exhibited a negative allometric growth pattern, where length growth outpaces weight gain. The sex ratio between males and females was balanced for both species. The mantle length at first gonad maturity (Lm) was greater than the mantle length at first capture (Lc), indicating that the catch was dominated by immature squid. These findings highlight the need for minimum catch size regulations to ensure the sustainability of squid resources in the Tuban waters.
Co-Authors . Muslihudin . Soemarno A Alfan Jauhari Abigail Moore Abu Bakar Sambah Abu Bakar Sambah, Abu Bakar Adi Wijaya Adi Wijaya Aisyah, Berdita Nur Ali Arman Lubis Ali Arman Lubis Ali Muntaha Aliviyanti, Dian Amanda Rifan Fathoni Andik Isdianto Arief Setyanto Arief Setyanto Arifin, Muh Zainul AYU FIRDAUSI NUZULA Bambang Semedi Citra Nilam Cahya Darmawan Ockto Sutjipto Dewa G.R. Wiadnya Dewa Gede Raka Wiadnya Diza, Novia Fara Edi Susilo Endang Y Herawati Endang Y. Herawati Endang Yuli Herawati Erwin Rosadi Evi Susanti Evron Asrial Fathurriadi Fathrurriadi Feni Iranawati, Feni Gatut Bintoro Harlyan, Ledhyane Eka Herawati, Endang Y Hikmah, Syarifah Irwan Jatmiko Ishani Nelunika Rathnayake Kartikasari, Wahida Kurniawan, Mohammad Rizal Lalu Samsul Rizal Lathif, Adib Hisyam Ledhyane Ika Harlyan Lee, Ming-An Lianingrum, Yulis Dwi Mahsuna, Inna Rohmatul Maulana, Almaas Zain Mita Ayu Liliyanti Moore, Abigail Mary Muh Zainul Arifin Muh. Arif Rahman Muhammad Junaidi Mulyanto Mulyanto Nabilla, Azma Salma Nurul Mukhlis Oktiyas Muzaky Luthfi oktiyas muzaky Luthfi oktiyas muzaky Luthfi, oktiyas muzaky Putrindi, Handayu Rafif Zul Fahmi Rahman, Muhammad Arif Rijatmoko, Sigit Rijatmoko, Sigit Rudi Saranga Ruly Isfatul Khasanah Salanggon, Alismi M Samliok Ndobe Saputra, Dhira Kurniawan Saranga, Rudi Sari, Wahida Kartika Setyawan, Fahreza Okta Shobriyyah Afifah Nabilah Sigit Rijatmoko Soemarno _, Soemarno Sukandar Sukandar Sunardi Sunardi Sunardi Sunardi Supapong Pattarapongpan Syarifah Hikmah Julinda Sari Tri Djoko Lelono Tumulyadi, Agus Umi Zakiyah, Umi Usma Kurniawan Hadi Utami, Ririn Vindi Lovina Rahmadita Vindy Rilani Wiadnya, Dewa G.R. Yasir Arapat Zainal Fanani Zainuri, Akhmad