both on the custom in each area and on the target species. Unlike pots, traps are used
to capture a variety of fish, crustaceans, or cephalopods.
Set gillnets and entangling nets are gears formed by one or more netting walls
mounted between two ropes, the upper line (headrope) is provided with floats and
the lower one (footrope) with weights (Fig. 14.7). In the area, these nets consist of
single or triple netting (known as trammel nets). Sometimes different types of nets
can be combined in a single fishing gear as the combined gillnets-trammel net.
Gillnets are commonly known in the area as “redes de pelo” (“hairnets”), because
they are made of very thin nylon. Trammel nets consist of three overlapping layers of
netting, two of them outer (known as “albitanas”) with a larger mesh size than the
inner net, mounted together on the same frame ropes. In gillnets, fish are retained by
their gills, while in trammel nets the whole or part of the body of the fish is
entangled. Both gillnet and trammel nets are set anchored on the bottom in vertical
position, marking the ends of the gear by means of surface buoys that can be hauled
Fig. 14.4 Typical mechanized dredge vessel and scheme of the fishing technique
14 Description of Artisanal Fisheries in Northern Alboran Sea
527
to capture a variety of fish, crustaceans, or cephalopods.
Set gillnets and entangling nets are gears formed by one or more netting walls
mounted between two ropes, the upper line (headrope) is provided with floats and
the lower one (footrope) with weights (Fig. 14.7). In the area, these nets consist of
single or triple netting (known as trammel nets). Sometimes different types of nets
can be combined in a single fishing gear as the combined gillnets-trammel net.
Gillnets are commonly known in the area as “redes de pelo” (“hairnets”), because
they are made of very thin nylon. Trammel nets consist of three overlapping layers of
netting, two of them outer (known as “albitanas”) with a larger mesh size than the
inner net, mounted together on the same frame ropes. In gillnets, fish are retained by
their gills, while in trammel nets the whole or part of the body of the fish is
entangled. Both gillnet and trammel nets are set anchored on the bottom in vertical
position, marking the ends of the gear by means of surface buoys that can be hauled
Fig. 14.4 Typical mechanized dredge vessel and scheme of the fishing technique
14 Description of Artisanal Fisheries in Northern Alboran Sea
527