On the Experimental Study how the Fishes Pass through the Mesh of Various Shortening Nets-I

Kanda, Kenji

doi:10.2331/suisan.18.365

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the diamond mesh shape, fish escape through the mesh was influenced not only by the mesh size but also by the hanging ratio. 6,7 Thus, three panels with different hanging ratio (0.70, vertical long 0.47-0.59, horizontal long 0.78-0.81) were prepared for each mesh size. 8 The specification of these panels is shown in Table 1.…”

Section: Netting Panelsmentioning

confidence: 99%

Analysis of the escape behavior of juvenile salmon Oncorhynchus keta from the bag-net for by-catch prevention in a set-net fishery

Fujimori

Abe²,

Shimizu

et al. 2000

Fisheries Sci

View full text Add to dashboard Cite

SUMMARY : The escape behavior of juvenile salmon from nets was investigated in a water tank experiment by using a netting panel with several types of specifications in view of by‐catch prevention in a set‐net fishery. Twelve diamond mesh nets and four square mesh nets with different mesh size (mesh openings when stretched: 14.0, 15.6, 17.2, and 20.5 mm; hanging ratio of diamond mesh: about 0.5, 0.70, and about 0.8) were used for the netting panel. A comparison of the passing ratio in each hanging ratio of diamond mesh showed the passing ratio of the panel with hanging ratio of 0.70 was the highest in each mesh size. In addition, the diamond mesh with hanging ratio of 0.70 had the higher passing ratio than that of square mesh in each mesh size. From these results, it was determined that the diamond mesh with hanging ratio of 0.70 was appropriate for the prevention of juvenile salmon by‐catch. However, the shape of the diamond mesh collapses easily with the tension caused by bag‐net hauling, so it is necessary to attach a device and employ a haul technique that allows the by‐catch to escape.

show abstract

Section: Netting Panelsmentioning

confidence: 99%