JURNAL ILMU DAN TEKNOLOGI PERIKANAN TANGKAP

Kontribusi perikanan pukat cincin yang berpangkalan di Pelabuhan Perikanan Pantai Tumumpa terhadap PDRB Kota Manado di masa Covid-19

Elvan Sembiring — 2024-07-29

Covid-19 brought their intensive effects in marine fishery subsector in Manado by the end of 2019. The research aimed at finding out how far the effect of purse seine fishery contribute on Gross Regional Domestic Product (GRDP) Manado between before and after Covid-19. Secondary data collected from of BPS Manado dan North Sulawesi in 2018 - 2022, while primary data i.e purse seiner’s catches and its value production from the annual reports of Tumumpa coastal fishing port by direct observation on board. Data was analyzed using Location Quotient (LQ) approach. The result of data analysis showed, there was a declining production during Covid-19 due to a lack of fishing operation activities, having a consequence in fish production value decreasing, because the fish distribution obstruction from the centres of producer to the centres of consumer. Before Covid-19 period, it gained the average catches of 10,7 million tons.yrs-1 (increasing 17,46% yrs-1), with production value of Rp. 159,6 billion yrs-1 (increase 23,23% yrs-1). During Covid-19, average cathes of purse seiner was 11,3 billion tons yrs-1 (decline 8,25% yrs-1) and production value of Rp. 204,3 billion yrs-1 in average (decline of 8,30% yrs-1). Purse seine fishery contribution on GRDP Manado decrease from 0,10% yrs-1 before Covid-19 (2017-2019) to - 0.42% yrs-1 during Covid-19 (2020-2012). During these two periods, (marine) fishery subsector had a LQ < 1, meant that this subsector was really not a basis of the subsector. To fulfill the Manado society consumption on fishes, it is required to supply fishes from other locations. The other side, the business of purse seiner fishery brought an agreeable advantage.

Pengaruh umpan pada pancing dasar terhadap hasil tangkapan

Sandrina Nellah Worang — 2024-07-30

Pancing adalah suatu alat penangkap ikan yang terdiri dari mata pancing dan tali atau tanpa umpan dengan memancing ikan target sehingga tertangkap pada mata pancing, salah satu jenis alat tangkap yang digunakan oleh nelayan untuk memancing yaitu pancing ulur (hand line). Penelitian ini bertujuan untuk mengetahui komposisi hasil tangkapan dengan pancing dasar sesuai jenis umpan yang digunakan dan membandingkan jenis umpan terbaik dari ketiga umpan. Penelitian ini dikerjakan dengan metode eksperimental, di perairan Batu Kapal Kota Bitung Provinsi Sulawesi Utara. Pengumpulan data dilakukan dengan cara mengoperasikan 3 unit pancing dasar dengan menggunakan umpan ikan malalugis,cumi dan udang yang terdiri 3 orang. Jenis-jenis ikan yang tertangkap selama pengoperasian pancing dasar terdiri dari 10 spesies ikan. Tetapi ikan yang tertangkap lebih dari 5 ekor hanya terdiri dari 4 jenis ikan, yaitu gaca sebanyak 11 ekor, Gutila 10 ekor, Sikuda 9 ekor, Gutila sirip merah 6 ekor. Dari hasil yang tangkapan bahwa jenis umpan yang terbaik dimulai dari umpan ikan malalugis, udang dan cumi.

Pengaruh perbedaan ukuran mata jaring terhadap hasil tangkapan jaring insang dasar di perairan pantai Difur Kota Tual

Julianus Ohoiwait — 2024-09-30

One of the fishing gears that is widely used by fishermen in Dulabetawi village, Difur Beach, Tual City is basic gill net fishing gear and generally uses mesh sizes of 2.5 inches and 1 inch. The aim of this research is to determine the effect of different mesh sizes on the quantity, species composition and size of fish caught with bottom gill nets in the waters of Dulabetawi, Difur Beach. The method used for this research was experimental fishing with 10 operations (trips), namely in the morning and at dusk with a net soaking time of 2-4 hours. The catch data obtained was analyzed using a paired sample t test to determine the effect of using different mesh sizes. varies with weight (grams) and number of fish caught. The results of the paired sample t-test show that the weight (grams) of the total catch is 0.041, which is smaller than 0.05 and for a total of 0.000, it is smaller than 0.05, which means there is a real difference in the use of different mesh sizes on weight ( grams) and the number (heads) of the catch, where the total weight of the catch at a mesh size of 2.5 inches is 40,359 grams and the number of 149 fish is greater than the 1 inch size of 85 fish and a weight of 25,735 grams, which means hypothesis H1 is accepted Hₒ rejected.

Pertumbuhan tiram mutiara (Pinctada maxima) menggunakan metode karambah apung dan longline

Gladys Indri Hendrawati — 2024-08-27

Pearl oyster cultivation is a growing industry in various countries. The growth and quality of pearls produced by oysters is greatly influenced by the cultivation method used. This research aims to compare the growth of pearl oysters (Pinctada maxima) cultivated using the floating cage and longline methods. Different cultivation methods can influence the growth of pearl oysters and the surrounding environmental conditions. Statistical analysis was conducted on sample size, mean values, standard deviation, and standard error of the mean for both cultivation methods. The results indicate no significant difference in the growth of pearl oysters between the floating cage and longline methods. However, biofouling and other disrupting organisms can affect the growth of pearl oysters in the floating cage method. The study also highlights the importance of environmental factors such as water quality, temperature, and food availability in influencing the growth of pearl oysters. Thus, this research provides valuable insights for the pearl oyster cultivation industry in selecting the optimal cultivation method to enhance productivity and the quality of the pearls produced.