Uji Selektivitas Alat Tangkap Gillnet Millenium Terhadap Hasil Tangkapan Ikan Kembung (Rastrelliger brachysoma)

Anggreini, Alinda Putri; Astuti, Septiana Sri; Miftahudin, Irfan; Novita, Putri Inova; Wiadnya, Dewa Gede Raka

doi:10.21776/ub.jfmr.2017.001.01.5

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…The two factors have a relationship to show the level of selectivity of the gillnet. If the value of the group length of the most caught fish (LC) is greater than the effective length of fish caught (Lm), then the gill nets are said to be selective and vice versa [20].…”

Section: Selectivitymentioning

confidence: 99%

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Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

Apriliani

Dewanti

Hamdani

et al. 2021

AJFAR

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Analyzing the selectivity of gillnet fishing gear using two different mesh sizes, namely 3.5 and 4 inches. Gillnets of these mesh sizes are commonly used by fishermen in Fish Landing Base (PPI) Cikidang, Pangandaran Regency, West Jawa. A total of 8 fishing trips were conducted at the coastal waters around PPI Cikidang, Pangandaran Regency, West Java from August 2018 to January 2019 using gillnet fishing gear As for each trip, 2-3 times the operation of the tool is carried out. The operation of the fishing gear is carried out with the help of vessels measuring 2-3 Gross Tonnage (GT). The catch obtained was differentiated based on the main catch and bycatch and the amount is calculated for analysis of the proportion of the catch. Mackerel (Scomberomorus commerson) is caught as the main catch, the fork length was measured for analysis of the length frequency distribution and selectivity curves. The operation of gillnets with a mesh size of 3.5 inches obtained a higher proportion of bycatch compared to gillnets with a mesh size of 4 inches. In addition, the length distribution of mackerel caught by gillnets with a mesh size of 3,5 inches is smaller (27-49 cm FL) compared to a mesh size of 4 inches (40-55 cm FL). Based on the distribution of length distribution, gillnets with a mesh size of 3.5 inches are more dominant in catching mackerel in a smaller size class interval than gillnets with a mesh size of 4 inches. Meanwhile, based on the selectivity curve for the length of mackerel with a 50% chance of being caught, it shows that gillnets with a mesh size of 3.5 or 4 inches are selective in catching mackerel, this is because the chances of catching fish at more than L50 are high.

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Section: Selectivitymentioning

confidence: 99%

“…3 also shows the L50 value, which is a value that shows the length of the fish that has a 50% chance of being caught and a 50% chance of escaping. The L50 value is usually used as a criterion for determining the use of mesh size [20]. In Fig.…”

Section: Selectivitymentioning

confidence: 99%

Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

Apriliani

Dewanti

Hamdani

et al. 2021

AJFAR

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“…Gillnet drift selectivity determines the difference in the number of species and biomass captured by various gillnets of various sizes (Adeosun et al, 2011;Ago et al, 2014). Therefore, it is essential to know the nature and selectivity of fishing gear (Anggreini et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

et al. 2021

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Selectivity is a fishing gear characteristic capable of catching fish of a specific size and species from the existing population distribution. Mesh size is one of the important factors that influence gillnets’ selectivity, because different length-classes of fish are caught by them. This report focuses on the selectivity of two mesh sizes of gillnets (8.89 cm and 10.16 cm) on mackerel's catch and constructing a gillnet in Sungailiat waters. Experimental fishing methods and selectivity analysis were used for the fishing gear’s more selective preparation, if the largest fishing ratio's value at the fork length (L) is high and the standard deviation value (S) is closer to 1. It is concluded that to be more selective a largest S (L) value of 0.999267194 at fork length (L=54.95 cm), and with a larger value of S (L) 0.997096071 and with (L=66.55 cm) for mesh Sizes 8.89 cm and 10.16 cm, respectively.

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“…A small pelagic fish of moderate economic value, mackerel is considered a valuable resource by local fishers. A major product in smallscale fisheries, mackerel is a commercially important fish species often found in coastal waters (neritic zone) [8].…”

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confidence: 99%

Optimization of Enzymatic Hydrolysis of Mackerel (Rastrelliger sp.) Muscle Protein Hydrolysate Using Response Surface Methodology

Riyadi,

Romadhon,

Bramantyo

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Mackerel (Rastrelliger sp.) is a widely distributed epipelagic species in South East Asia. Mackerel has a high amount nutrient such as protein (20.83 %) and fat (1.03 %). The high amount of protein and low amount of fat will allow it to be used as a material to produce a good protein hydrolysate. The aim of this study is to determine the optimal enzymatic hydrolysis conditions (time, temperature, and pH) using Response Surface Methodology (RSM). Mackerel Protein Hydrolysate (MPH) was prepared using commercial Flavourzyme. Optimization of MPH was performed by employing Box Behnken Design method of RSM. SN-TCA method was used to calculate the degree of hydrolysis (DH) which is the key parameter in hydrolysis reaction. Optimum hydrolysis conditions were obtained at pH 7, temperature 55°C and 60 min of process. Under these conditions the DH obtained was 17.7293 % with 4% enzyme to substrate ratio. The suggested model for the hydrolysis process is quadratic with the desirability factor of 1. The MPH was further assessed for its amino acid composition using High Performance Liquid Chromatography (HPLC). The hydrolysis process increases the amino acid amounts namely L-Glutamic Acid (19.77%), L-Valin (14.20%), L-Aspartic Acid (11.42%), Glycine (11.04%), L-Alanin (14.20%), L-Prolin (16.80%), and L-Histidin (27.06%). The study suggested that mackerel muscle can be considered to be utilized as fish protein hydrolysis materials.

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Uji Selektivitas Alat Tangkap Gillnet Millenium Terhadap Hasil Tangkapan Ikan Kembung (Rastrelliger brachysoma)

Cited by 4 publications

References 2 publications

Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

Optimization of Enzymatic Hydrolysis of Mackerel (Rastrelliger sp.) Muscle Protein Hydrolysate Using Response Surface Methodology

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