Encircling gill net
The
encircling gill-net for Indo-Pacific makerel is a widely
operated gear. The netting for this gear is mostly
nylon multifilament, made of yarns between 210 d/9 and 210
d/12. The size of mesh is about 4-4.5 cm, height of
net ranges from 7 top 19 m. When encircling gill net
is used for mullet, it is smaller than the gear used for
Indo-Pacific mackerel, material is nylon monofilament.
The
encircling gill-net for Indo-Pacific mackerel can be operated
in the day-time and at night. In day-time operation the
fish school is first encircled by the net, after which the
fishermen create commotion and noise by beating the water surface
with some implement so as to frighten the fish into the meshes
of the net. In night-time operation an electric lamp
is used for the same purpose.
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