Freddy Supriyadi
P3U Mariana, Kementrian Kelautan dan Perikanan, Indonesia

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Perbedaan Waktu Hauling Bagan Tancap terhadap Hasil Tangkapan di Perairan Sungsang, Sumatera Selatan Fauziyah, Fauziyah; Supriyadi, Freddy; Saleh, Khairul; Hadi, Hadi
Jurnal Lahan Suboptimal Vol 2, No 1 (2013)
Publisher : Jurnal Lahan Suboptimal

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Abstract

Anchovies (Stolephorus sp.) were the target species of stationary lift nets in Sungsang estuary of South Sumatra including others small pelagics. Fishermen of stationary lift net in Sungsang estuary operated before midnight until early morning. In order to obtain optimum catches, it was necessary to know when the right time to operate the stationary lift nets. The research objectives were 1) to analyze the effect of hauling time on the catch, and 2) to determine the optimum hauling time of stationary lift net in Sungsang estuary. The research was conducted in May 2012 with Experimental Fishing methods and completely random design models with treatment differences in hauling time was before midnight (21:00 to 23:59), around midnight (00:00 to 02:59), and after midnight (03:00 to 5:59). The fourth stationary lift net was operated for 3 days (3 trips). All data were processed using SPSS 17 software for windows. The results indicated that the hauling time significantly affected the catch and the optimum hauling time of stationary lift net in Sungsang estuary was around midnight (00:00 to 02:59).
KEANEKARAMAN MAKROZOOBENTOS DI ESTUARI SUNGAI MAHAKAM BAGIAN TENGAH PROVINSI KALIMANTAN TIMUR Makri, Makri; Supriyadi, Freddy
Maspari Journal Vol 10, No 2 (2018): Edisi Juli 2018
Publisher : UNIVERSITAS SRIWIJAYA

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Delta Mahakam terkenal sebagai suatu lansekap wilayah pesisir yang sangat unik. Delta itu sendiri adalah bentangan vegetasi nipah (Nypa fruticans) yang sangat luas, terluas di Indonesia. Pesatnya kegiatan pembangunan di kawasan Delta Mahakam menimbulkan tekanan ekologis terhadap ekosistem dan biota yang hidup di perairan tersebut. Tujuan penelitian ini yaitu, memberikan informasi keanekaragaman dan jenis-jenis makrozoobentos di Estuari Sungai Mahakam bagian tengah. Penelitian dilakukan pada bulan Maret dan Mei  2014 berdasarkan survei lapangan di sepanjang Estuari Sungai Mahakam bagian tengah, yaitu Muara Badak, Muara Berau, Muara Kaeli dan Muara Ilu. Sampel makrozoobentos diambil dengan Eckman  Grabb kemudian disaring.Analisis data yang dilakukan yaitu analisa struktur komunitas makrozoobentos dilakukan dengan menentukan nilai indeks keanekaragaman (H’), indeks keseragaman (E) dan indeks Dominansi (C) spesies. Indeks keanekaragaman makrozoobentos berkisar 0,74-1,16 pada bulan Maret 2014 dan berkisar 0,71-0,95 pada bulan Mei ini menunjukkan bahwa Estuari Sungai Mahakam sudah mulai setengah tercemar sampai tercemar berat.
DISTRIBUSI UKURAN IKAN TERI (Stolephorus sp) YANG DITANGKAP PADA PERIKANAN BAGAN TANCAP DI MUARA SUNGSANG SUMATERA SELATAN (Size Distribution of Anchovy (Stolephorus sp.) Caught in Stationary Liftnets at Sungsang Estuary South Sumatera) Fauziyah, .; Hadi, .; Saleh, Khairul; Supriyadi, Freddy
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol 7, No 2 (2016): Marine Fisheries - November 2016
Publisher : Bogor Agricultural University

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Abstract

ABSTRACT The anchovy  (Stolephorus sp.)  in  Muara  Sungsang  estuary South Sumatera  are  generally caught by stationary liftnet. Morphometric studies are essential to determine the growth form and growth rate of species, which is  very much important for proper  utilization  and management of the population of the species. This study aimed to determine the size structure and growth pattern of the  anchovy  caught  by  stationary  liftnet.  The   size  structure,  length -weight  relationship  and  the condition factor  of  anchovy were computed.  The anchovy samples were taken  in July 2013 (750 samples) and September 2013 (1950 samples).    Results  showed  that the population of anchovy was  dominated by length frequency distribution  of  65 mm during study on July 2013 and 75 mm during  study  on  September  2013.  Both  populations  were  dominated  by  weight  frequency distribution 2 gram.  The anchovy that caught on September 2013 were more allowable catch than on July 2013. The growth pattern of anchovy was negative allometric. The relative condition factor (Kn)  value  in  September  2013  was  higher  than  in  July  2013.  It  indicated  that  the  environmental conditions  at  Muara  Sungsang  estuary  are  suitable  for  growth  of  anchovy’s  and  still  safe  from fishing pressure.Keywords: allometric, anchovy, condition factor, frequency distribution ABSTRAKIkan  Teri  (Stolephorus  sp.)  di  Muara  Sungsang  Sumatera  Selatan  umumnya  ditangkap menggunakan bagan tancap. Studi morfometrik berguna untuk menentukan bentuk pertumbuhan dan laju pertumbuhan spesies. Hal ini berguna untuk manajemen populasi dan sebagai informasi tentang stok atau kondisi organisme. Disamping itu, sebagai dasar dalam upaya pengelolaan dan pemanfaatan  ikan  teri  di  masa  akan  datang.  Penelitian  ini  bertujuan  untuk  mengetahui  struktur ukuran dan pola pertumbuhan ikan teri hasil tangkapan bagan tancap. Data ikan teri didapatkan pada  bulan  Juli  2013  (750  sampel)  dan  September  2013  (1950  sampel).  Hasil  penelitian menunjukkan bahwa populasi ikan teri didominasi oleh distribusi frekuensi panjang 65 mm pada bulan Juli 2013 dan 75 mm pada bulan September 2013. Distribusi frekuensi berat teri pada kedua bulan tersebut sama yaitu 2 gram. Penangkapan ikan teri pada bulan September 2013 lebih layak tangkap  dibandingkan  pada  bulan  Juli  2013.  Pertumbuhan  ikan  teri  bersifat  negative  allometric. Nilai Faktor kondisi (Kn) pada bulan September 2013 lebih tinggi daripada bulan Juli 2013. Hal ini mengindikasikan bahwa kondisi  lingkungan Muara Sungsang cocok untuk pertumbuhan ikan teri dan masih aman dari tekanan aktivitas penangkapan.Kata kunci: allometrik, teri, faktor kondisi,distribusi frekuensi
PERBEDAAN WAKTU PENGOPERASIAN TERHADAP HASIL TANGKAPAN BAGAN TANCAP DI PERAIRAN SUNGSANG, SUMATERA SELATAN Fauziyah, Fauziyah; Supriyadi, Freddy; Saleh, Khairul; Hadi, Hadi
Jurnal Penelitian Perikanan Indonesia Vol 19, No 4 (2013): (Desember 2013)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Di perairan Sungsang Sumatera Selatan, target utama penangkapan dengan alat tangkap bagan adalah ikan teri (Stolephorus sp) dan ikan lainnya sebagai hasil sampingan. Pada umumnya, bagan tancap dioperasikan oleh nelayan setempat sebelum tengah malam sampai menjelang pagi. Berdasarkan fakta tersebut, pengkajian waktu pengoperasian yang optimum terhadap hasil tangkapan bagan tancap perlu dilakukan. Tujuan penelitian adalah untuk menganalisis perbedaan waktu operasi dan waktu operasi optimum terhadap hasil tangkapan bagan tancap. Penelitian ini dilaksanakan pada kondisi bulan gelap pada bulan Mei 2012 dengan metode experimental fishing dan model Rencana Arah Lengkap (RAL) dengan perlakuan perbedaan waktu operasi yaitu sebelum tengah malam  (21.00-23.59 WIB), saat tengah malam (00.00-02.59WIB), dan setelah tengah malam (03.00-05.59 WIB).  Empat bagan tancap dioperasikan dengan masing-masing 3 kali trip. Hasil penelitian menunjukkan bahwa waktu operasi penangkapan bagan tancap berpengaruh nyata terhadap hasil tangkapan, dan  waktu pengoperasian yang optimum bagan tancap adalah pada saat tengah malam (00.00-02.59 WIB). In Sungsang estuary of South Sumatera, the target species of fixed lift nets is anchovies (Stolephorus sp) and the others species are classified as by catch. Generally, the fixed lift net is operated by local fishermen before midnight until early morning. Based on this fact, a study on the optimum operation time of the fixed lift nets is necessary. The research objectives are  to analyze the operating time, and the optimum operating time of the fixed lift net in Sungsang estuary. The research was conducted in May 2012 using experimental fishing methods and completely random sampling. The differences in operating time i.e before midnight (21:00 to 23:59), around midnight (00:00 to 02:59), and after midnight (03:00 to 5:59) were used as tratments. The four observed fixed lift net were operated for 3 days (3 trips). Data were analyzed using SPSS 17 software for Windows. The results indicated that the operating time significantly affected the catchand the optimum operating time of fixed lift net in Sungsang Estuary was around midnight (00:00 to 02:59).
GROWTH AND EXPLOITATION STATUS (Channa striata Bloch, 1793) IN LUBUK LAMPAM FLOODPLAINS, SOUTH SUMATERA Fahmi, Zulkarnaen; Nurdawati, Syarifah; Supriyadi, Freddy
Indonesian Fisheries Research Journal Vol 19, No 1 (2013): (June 2013)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Due to the economic importance of C. striata in Lubuk Lampam floodplains (Indonesia), this study is aimed to estimate the biological and population parameters required for proposing a future plan to sustain and manage this valuable fish resource. The growth, mortality and explotation ratio of Channa striata estimated by employing FiSATProgramme are reported. The parameters of Von Bertalanffy growth model of 1,529 sample fishes were estimated as K= 0.36/ year, L” = 72.98 cm and to = -0.52 year. The coefficients of total mortality (Z), natural mortality (M) and fishing mortality (F) were 1.72, 0.73 and 0.99 year-1 respectively. Relative yield per recruit analysis shows that the presentexploitation rate (E) was 0.58. Yield per recruit can be maximized at the exploitation ratio of 0.5 and Lc/Linf values of 0.3. The Yield per recruit and biomass per recruit models indicated that, the fisheries status of C. striata in Lubuk Lampam floodplains exceed the limit reference point (Fmax), thus stock of this species in Lubuk Lampam floodplains is indicated being driving down.Reduction in fishing effort and increase number of selective fishing gears are suggested to sustain the fishery of Channa striata in Lubuk Lampam floodplains.
PARAMETER POPULASI IKAN BETOK (Anabas testudineus (BLOCH, 1792)) DI EKOSISTEM PAPARAN BANJIR SUNGAI MUSI, Lubuk Lampam Nurdawati, Syarifah; Fahmi, Zulkarnaen; Supriyadi, Freddy
BERITA BIOLOGI Vol 18, No 1 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

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Anabas testudineus Bloch, 1792 is economically important fish species found in Lubuk Lampam floodplains of Musi River. Fishing activities that take place throughout the year can affect reproduction patterns and recruitment (new additions) of fish. This study aims to evaluate several parameters of betok fish populations that can be used as input for fish resource management policies in floodplains of Musi river. A total of 3271 samples of betok fish caught by fishermen from March to November 2011 were collected to obtain data on fish length and weight. Growth parameters (L∞, K, Z dan M) were calculated using FiSAT II based on the length frequency distribution of fish. The values of L∞ and K were obtained at 204.75 mm and 0.24 / year respectively while the maximum age of fish was estimated to be 4.36 years. The total mortality (Z) and natural mortality (M) of betok fish is 0.99 / year and 0.42 / year, Fishing mortality (0.56/year). The exploitation rate (0.57) was slightly lower than the predicted value (Emax= 0.69) indicating that Anabas  testudineus was near fully exploited in the Lubuk Lampam floodplain ecosystem.