TECHNICAL REVIEW OF ENCIRCLING RINGED GILL NET FOR GILLNET STANDARDIZATION IN INDONESIA
Zarochman(a*), S.S Sukoraharjo(a), Zainal Wassahua(a), Suparman Sasmita(a)

(a)National Research and Innovation Agency, Republic of Indonesia,
Jl. Raya Bogor, KM. 46, Cibinong, Nanggewer Mekar, Bogor, East Java, 16912, Indonesia

*Email: zaro001[at]brin.go.id

Abstract

In proposed for fishing gear standardization based on fishing method is carried out the application of the theoretical formula to calculate fishing gear design for preparing fishing gear standardization in Indonesia. The result of the identification of encircling ringed gillnet belonging the local fishermen associated with the size of black pomfret as fished target is used for preparation of fishing gear standardization materials for the concerned by adjusting the size of fish target by measuring a fish length of about 150-250 mm or a fish body circumference of about 300-400 mm.
As a result, the encircling ringed gillnet is made of nylon monofilament diameter 0,35 mm, and PE 380 d/6 mesh size 76,2 mm, Mesh length (ML) 2.879, and Mesh depth (MD) = 218 mesh with a head rope length of 120,65 m shorter than the ground rope 142,6 m. This gill net has a buoyancy of 173,6 grf/m and a sinking power of 124,7 grf/m or a buoyancy ratio of 1.39 sinking power. The gill net is trapezium shaped, operated surrounding of the net to fish schooling closed around FAD nearby in the waters of more than 20 m deep with an attached net height of 13.30 m.

Keywords: standardization, fishing gear, encircling ringed gillnet

Topic: Sustainable Aquaculture and Fisheries