Fishing experiments with an alternative longline bait based on nylon bags
Original version
This report is not to be cited without prior reference to the authorAbstract
This report describes two fishing trials using an alternative
longline bait, one in the fishery for torsk and ling, the
other in the fishery for cod and haddock. A bait based on
fine-meshed nylon bags as reinforcement and minced raw
materials as feeding stimulants was tested. Possible negative
effects on the catch rate caused by the nylon bag or the
metal clip that closes the bag were investigated. The nylon
bag caused a negative effect on the catch rate, while the
clip showed no effect.
Adding different types of binders to the bait showed that the
binder affects the catchability. Redusing the bait loss from
the bags without binding the stimulants too hard proved to be
an important property of the binder.
Compared with natural bait, nylon bags containing minced
herring gave higher catch rates for torsk, ling and haddock,
but lower catch rate for cod.