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- Title
Comparative fishing trials for Charybdis japonica using collapsible box-shaped and dome-shaped pots.
- Authors
Archdale, Miguel Vazquez; Kuwahara, Osamu
- Abstract
Comparative fishing trials were undertaken with two commercial collapsible pots for the crab Charybdis japonica. One pot was box-shaped with two slit entrances at the ends, while the other was dome-shaped with two open funnel entrances. Pots were placed at the bottom of a pond that is connected to Kagoshima Bay. Fishing trials were carried out using a 1-day soaking time; the bait used was mackerel. The box-shaped pot had higher catches of crabs and non-target organisms, but the number of large crabs (carapace width >8 cm) was almost half as many as that caught with the dome-shaped pot. The catch of non-target species was also greatly reduced in the dome-shaped pot, and fish caught were mostly enmeshed in the netting. The reduction in catches of small crabs and non-target organisms was due to the nature of the dome-shaped pot's larger mesh size and open entrances, which allowed for escape. The dome-shaped pot seemed more efficient for harvesting commercial size crabs, while the box-shaped pot seemed better for removing all crab sizes.
- Subjects
JAPAN; FISHING; CRABBING; CRAB fisheries; FISHERY sciences; AQUACULTURE; BAYS
- Publication
Fisheries Science, 2005, Vol 71, Issue 6, p1229
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1111/j.1444-2906.2005.01087.x