Akustik Dibandingkan Dengan Densitas Ikan: Kombinasi Metode Aktif Dan Pasif

Randi, Zulfathri; Hestirianoto, Totok; Pujiyati, Sri

doi:10.24319/jtpk.8.187-198

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…This indicates that the value of feed conversion ratio in this study is considered optimal. The value of the feed conversion ratio is influenced by several factors, namely the quality and quantity of feed, species, lobster age, body size, and water quality [11].…”

Section: Resultsmentioning

confidence: 99%

The effect of formulated diets with different protein sources on feed consumption, feed conversion ratio, and nutrient retention of scalloped spiny lobster (Panulirus homarus)

Agustin,

Amin,

Lamid

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Scalloped spiny lobster (Panulirus homarus) is a type of marine biota that has high economic value. Lobster cultivation must to be developed, which is in terms of feed. Currently, the majority of cultivators still depend on trash fish as the main food for lobsters. This study was conducted to find the best feed formulation as an alternative to trash fish. The method used is an experimental method with five treatments and four replications where trash fish as control (T0), fish meal formula (T1), rebon shrimp flour formula (T2), maggot flour formula (T3), and snail flour formula (T4). Lobster rearing was carried out for 30 days with the observed parameters including the feed consumption, feed conversion ratio, and nutrient retention. The data obtained were analyzed using ANOVA and continued with Duncan’s Multiple Range Test with a level of 5% to determine the best treatment. The results showed that formulated diets with different protein sources was able to affect the feed consumption and nutrient retention of scalloped spiny lobster, but was not affect on the feed conversion ratio. These results indicate that the best formula feed is rebon shrimp flour formula which shows the best results from the four artificial feeds.

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Section: Resultsmentioning

confidence: 99%

The effect of formulated diets with different protein sources on feed consumption, feed conversion ratio, and nutrient retention of scalloped spiny lobster (Panulirus homarus)

Agustin,

Amin,

Lamid

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Penelitian ini akan menghasilkan sebaran spektrum suara schooling ikan gulamah sehingga dapat dijadikan acuan dalam pembuatan S-FAD yang ramah lingkungan. Penggunaan suara untuk mendeteksi sumberdaya ikan atau sering akustik perikanan terdiri dari dua pembagian utama yaitu akustik aktif dan pasif (Randhi et al 2017), dalam penelitian ini untuk memperoleh suara schooling ikan akan dilakukan perekaman dengan menggunakan hydrophone pada saat bersamaan nelayan mendeteksi schooling ikan tersebut.…”

Section: Metode Penelitianunclassified

Spektrum Suara Gulamah Sebagai Kajian Awal Pembuatan Rumpon: Kasus Di Perairan Tuban, Jawa Timur

Yulianto

Jauhari

Wiadnya

et al. 2019

JTPK

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One of the leading commodities in the North Coast of East Java which has a large production is gulamah (Sciaenidae). This fish is one of the marine fisheries commodities that have high potential. Previously the use of gulamah was limited to fresh fish and dried fish. Lately these organs in fish (swimming bladders) have also been widely used and actually have much higher economic value. The high economic value of these commodities has implications for the increasing pressure on exploitation of these fish. In fact, sometimes arrests are made without regard to responsible fishing rules. Gulamah is one type of fish that often makes a "croak" sound in its behavioral activities. Study of the schooling sound spectrum of gulamah (Sciaenidae) as a preliminary study for the manufacture of effective and environmentally friendly Sound-Fish Aggreagating Device as one of the food security instruments for marine fisheries products. So it is expected that with the introduction of new technologies that are efficient, effective, simple and can provide economic added value for fishermen. Analytical descriptive research method and experimental fishing, the data collected is the sound spectrum data schooling gulamah (Sciaenidae), where data collection is carried out at Tombokboyo Waters, Tuban, East Java. The results showed that gulamah in Tombokboyo waters issued a sound with an average amplitude of around -54,97 dB, an average frequency of 732,129 Hz, with a sound duration of 130 miliseconds. ABSTRAKSalah satu komoditas unggulan di Pantai Utara Jawa Timur yang memiliki produksi cukup besar adalah ikan gulamah (Sciaenidae). Ikan ini merupakan salah satu komoditas perikanan laut yang mempunyai potensi tinggi. Sebelumnya pemanfaatan ikan gulamah hanya sebatas dalam bentuk ikan segar dan ikan asing/kering. Belakangan ini organ dalam ikan ini (gelembung renang) juga banyak dimanfaatkan dan justru mempunyai nilai ekonomis jauh lebih tinggi. Tingginya nilai ekonomis pada komoditas ini berimplikasi meningkatnya tekanan eksploitasi terhadap ikan ini semakin meningkat. Bahkan terkadang upaya penangkapan yang dilakukan tanpa memperhatikan kaidah-kaidah penangkapan yang bertanggungjawab. Gulamah merupakan salah satu jenis ikan yang sering mengeluarkan suara "croak" dalam aktivitas tingkah lakunya. Kajian tentang spektrum suara schooling ikan gulamah/tigawaja sebagai kajian awal pembuatan alat pendeteksi dan pengumpul ikan berbasis suara yang efektif dan ramah lingkungan sebagai salah satu instrumen ketahanan pangan produk perikanan laut. Sehingga diharapkan dengan adanya introduksi teknologi baru yang efisien, efektif, murah, sederhana dan dapat memberikan nilai tambah ekonomi bagi nelayan. Metode penelitian deskriptif analitik dan experimental fishing, data yang dikumpulkan adalah data spektrum suara schooling ikan gulamah (Sciaenidae), dimana pengambilan data dilakukan di Perairan Tombokboyo, Tuban, Jawa Timur. Hasil penelitian menunjukkan bahwa ikan gulamah di Perairan Tombokboyo mengeluarkan suara dengan rata-rata amplitude berkisar -54,97...

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Application of quantitative echosounder EK500 to detect fish density distribution in the waters at the eastern region of Alor Island

Izmiyaqin

Jaya

Manik

2020

IOP Conf. Ser.: Earth Environ. Sci.

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Information on fish resources and its distribution in the waters around Alor Island, East Nusa Tenggara is still relatively unknown. For that matter, the objective of this study is to determine the distribution of fish density horizontally (latitude or longitude) or vertically (depth) in the waters at the eastern region of Alor Island, using acoustic scientific echosounder SIMRAD EK500 instrument. This instrument is equipped with split beam echosounder transducer system with operating frequency of 38 kHz and 120 kHz. The acoustic survey was conducted in the waters off the north, east and south coast of eastern part of the Alor Island. The result of the survey showed that fish density detected in the surface water dominated by 0,1-100 individual/m3 fish density, in 60-80 meters depth was dominated by 0,1-10 individual/m3, and in 80-200 meters depth was dominated by 0,1-100 individual/m3 of fish density. In addition, the 38 kHz detect higher density of fish compare to 120 kHz.

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Akustik Dibandingkan Dengan Densitas Ikan: Kombinasi Metode Aktif Dan Pasif

Cited by 3 publications

References 12 publications

The effect of formulated diets with different protein sources on feed consumption, feed conversion ratio, and nutrient retention of scalloped spiny lobster (Panulirus homarus)

The effect of formulated diets with different protein sources on feed consumption, feed conversion ratio, and nutrient retention of scalloped spiny lobster (Panulirus homarus)

Spektrum Suara Gulamah Sebagai Kajian Awal Pembuatan Rumpon: Kasus Di Perairan Tuban, Jawa Timur

Application of quantitative echosounder EK500 to detect fish density distribution in the waters at the eastern region of Alor Island

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