Electronic Theses and Dissertation

Bagan Deli merupakan kelurahan yang berada di kecamatan Medan Belawan. Kelurahan
ini memiliki potensi penghasil keong macan (Babylonia spirata) dengan nilai ekonomis
yang tinggi. Alat tangkap yang digunakan untuk menangkap keong macan ialah jodang.
Umpan yang digunakan nelayan di perairan Bagan Deli untuk menangkap keong macan
berupa belangkas. Oleh karena itu, penelitian ini bertujuan untuk mendeskripsikan
konstruksi alat tangkap jodang serta metode pengoperasian alat tangkap jodang dan
mengetahui pengaruh perbedaan jenis umpan terhadap hasil tangkapan keong macan
(Babylonia spirata). Penelitian ini dilakukan bulan November 2022. Metode yang
digunakan obsevasi dan experimental fishing. Kontruksi yang digunakan pada alat
tangkap jodang terdiri dari rangka, dinding samping, dinding alas bawah, dan pemberat.
Umpan yang digunakan terdiri dari belangkas, ikan tembang, dan ikan petek. Kemudian,
data dianalisis menggunakan Rancangan Acak Lengkap (RAL). Total hasil tangkapan
1.272 individu, dimana 856 individu dengan menggunakan umpan belangkas, 245
individu menggunakan umpan ikan tembang, dan 171 individu menggunakan umpan
ikan petek. Hasil tersebut dianalisis menggunakan sidik ragam (ANOVA) yang
menunjukkan bahwa nilai f-hitung lebih besar dari f-tabel dengan nilai signifikansi
0,000. Artinya, perbedaan jenis umpan yang diberikan berpengaruh sangat nyata
terhadap hasil tangkapan keong macan. Berdasarkan uji BNT diperoleh bahwa setiap
perlakuan memiliki perbedaan, sehinggan dinyatakan bahwa penggunaan umpan
belangkas berbeda sangat nyata dengan ikan tembang, Umpan belangkas berbeda
saangat nyata dengan ikan petek, Umpan ikan tembang berbeda nyata dengan ikan
petek.
Kata kunci: Keong macan, umpan, jodang, belangkas

Bagan Deli is one of the villages located in Medan Belawan district. This village has the potential to produce tiger snails (Babylonia spirata) with high economic value. The fishing gear used to catch tiger snails is jodang, a bait used by fishermen in the waters of Bagan Deli to catch tiger snails in the form of horseshoe crabs. This study aims to describe the construction of the jodang fishing gear and the method of operating the jodang fishing gear and to determine the effect of different types of bait on the catches of tiger snails (Babylonia spirata). This research was conducted in November 2022 using observation and experimental fishing methods. The construction used for the jodang fishing gear consists of a frame, sidewalls, lower base walls, and ballast. The bait used consists of crabs, tembang fish, and petek fish. Then, the data were analyzed using a Completely Randomized Design (CRD). The total catch was 1.272 individuals, of which 856 were used as bait for horseshoe crabs, 245 individuals used as bait for tembang fish, and 171 individuals used as bait for petek fish. These results were analyzed using variance (ANOVA) which showed that the f-count value was greater than the f-table with a significance value of 0.000 meaning that the different types of bait given had a very significant effect on the tiger snail catches. Based on the BNT test, it was found that each treatment had a difference. So it was stated that the use of the horseshoe crabs bait was very significantly different from the tembang fish. Horseshoe crabs bait was very significantly different from the petek fish. Tembang fish bait was significantly different from the petek fish. Keywords: Tiger snail, bait, jodang, horseshoe crabs