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Laju Eksploitasi Sumberdaya Ikan Layang (Decapterus macrosoma) yang didaratkan di Pangkalan Pendaratan Ikan (PPI) Kota Sorong-Papua Barat

Jurnal Airaha Vol 6 No 1: Juni 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The study related to the size and the exploitation rate of Shortfin scad are important in order to see the development condition of resource, especially on stock availibility for the management of its sustainability. This study was conducted in April - September 2013 at The Fish Landing Base (PPI) of Sorong, West Papua. This study aims to analyze the biology aspects of Shortfin scad based on itss length frequency, length-weight relationship, growth rate, mortality rate and exploitation rate of the catch.The primary data was acquired by the measurement of length and weight of Shortfin scad landed by purse seiner and from interview with the fishermen. The number Shortfin scad measured during reseach was 1.504 individuals which classified by the size of class interval, the data then analyzed to see the length-weight relationship and growth rate parameter analysis (LÂ¥and K) by using the program of FAO-ICLARM stock of the assessment tools II (FiSAT II). The results showed that the frequency and normal distribution of total length, midlength is dominated by class interval of 16,0 - 16,5 cm. The correlation between weight and length of the individual is not significantly differ with the value of b = 3,57 (positive allometriks). The length (Loo) and weight asymptotic (Loo) are 21,83 mm and 105,4 grams respectively, this is allegedly estimated that the age of Shortfin scad is approximately of 40 months or 3.3 years. The result of exploitation rate acquired from the comparison between the mortality rate of catch and total mortality (E = F / Z) is 0,35. This indicating that the exploitation rate of Shortfin scad (Decapterus macrosoma) in purse seine fisheries  at the time of research is still small due to smaller value compared to the optimal value when F = M or E = 0,5.

Analisis Pengaruh Perbedaan Hanging Ratio pada Jaring Insang (Gillnet) Terhadap Hasil Tangkapan Ikan

Jurnal Airaha Vol 3 No 1: Juni 2014
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Penelitian bertujuan untuk mengetahui pengaruh perbedaan hanging ratio terhadap hasil tangkapan Gillnet. Penelitian dilakukan di Perairan Sorong, bulan Oktober 2013 - November 2013 menggunakan Gillnet  dengan hanging ratio 0,30, 0,40, dan 0,50 masing-masing sebanyak 2 piece. Ketiga tipe gillnet  dioperasikan secara bersama-sama. Hasil tangkapan selama penelitian dengan jumlah total pengambilan sampel 20 diperoleh 16 jenis spesies ikan yang didominasi oleh Belanak (Mugil cephalus) dengan jumlah dan total berat hasil tangkapannya adalah 166 ekor dan 125,60 kg, Daun Bamboo (Chorinemus spp) dengan jumlah dan total berat hasil tangkapannya adalah 146 ekor dan 131, 29 kg. Rataan jumlah ikan dan total berat hasil tangkapan per setting dari setiap jenis jaring insang memberikan indikasi adanya pengaruh nyata faktor hanging ratio. Rataan pada jumlah ikan Belanak (Mugil cephalus) per setting memperlihatkan kecenderungan menurun dengan meningkatnya hanging ratio. Sedangkan rataan jumlah ikan Bamboo (Chorinemus spp) terlihat maksimum untuk jaring dengan hanging ratio 0.40. Analisis sidik ragam menyimpulkan bahwa faktor tersebut signifikan pada taraf a = 0,05.

Struktur Komunitas Lamun di Perairan Distrik Salawati Utara Kabupaten Raja Ampat

Jurnal Airaha Vol 5 No 1: Juni 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

This study aims to analyze seagrass community structure in North Salawati District, Raja Ampat. The scope of research is limited to identification of seagrass biodiversity, analyzing the overrune level of seagrass type covering the area, analyzing the densities types of seagrass important value index frequencies, water parameters and seagrass area. Research method was purposive sampling by using transects with dimensions of 1 x 1 meter with a total of seven stations along 100 meters of seagrass area. The acquired data was analyzed by using analysis of closure type, density type, frequency type, and important value index. Results of biodiversity identification showed that there are two families of seagrass,      Eight species of seagrass covering the area. The overrune of seagrass covering the area in both stations is very high. The area of coverage in the both areas is above 60% (> 60%), which classified as "healthy". The density of the species in both stations is very high which classified as medium dense. Temperature, pH, DO, salinity and turbidity are in the optimum level which classified as "good". The area which overrune by Seagrass in the waters of northern Salawati District is amounted to 5.7 km2.

Analisis Penggunaan Umpan pada Jaring Insang (Gillnet)

Jurnal Airaha Vol 2 No 1: Juni 2013
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Penangkapan Udang Penaeid Pasca Moratorium dan Pelarangan Kapal Trawl di Kabupaten Kaimana Propinsi Papau Barat

Jurnal Airaha Vol 6 No 2: Desember 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Penelitian ini mendiskripsikan penangkapan udang penaeid di Kabupaten Kaimana setelah moratorium dan Pelarangan Penangkapan ikan dengan Pukat Hela/Pukat Tarik untuk memberi gambaran dalam perencanaan pengelolaan perikanan udang yang berkelanjutan.  Metode yang digunakan dalam pengumpulan data penelitian adalah metode survei lapangan dengan mengikuti langsung kegiatan operasi penangkapan oleh nelayan, pengukuran alat tangkap dan wawancara yang dilakukan mulai bulan September – November 2017 kemudian diolah dan di bahas secara deskriptif.  Penangkapan udang penaeid di Kabupaten Kaimana setelah moratorium dan Pelarangan Penangkapan ikan dengan Pukat Hela/Pukat Tarik dilakukan oleh nelayan skala kecil yang berasal dari daerah Arguni dan Nelayan Kaimana  menggunakan trammel net dan jaring udang monofilament dengan menggunakan perahu katinting dan longboat motor tempel. Penangkapan udang dengan jaring udang PA monofilament dilakukan pada perairan pesisir pantai pada kedalamanan 1 – 5 meter dan penangkapan udang dengan trammel net dilakukan pada perairan pesisir pantai pada kedalamanan 5 – 20 m. Umumnya dasar perairan lumpur berpasir dengan warna perairan keruh abu-abu, dan sepanjang pantai terdapat hutan mangrove dengan hasil tangkapan didominasi udang banana. Musim penangkapan  terjadi pada bulan November – April untuk Perairan Arguni, dan Juni – Oktober di Perairan Teluk Kaimana.