CA, I agree with you to a point, but there is more to it, than a few rec prawners out there on the weekend.
Prawns are a short lived species and stocks are influenced by larval survival. Larval survival is dependant on a variety of environmental effects. Prawn larvae move into surface waters at night and mortality is increased by rainfall, low salinity conditions, just to name a few. During the larval stage, tides and wind driven currents control and direct the distribution of the larvae. Local areas may have reduced prawn abundance or increased prawn abundance depending on the distribution of larvae when they settle – and these changes year to year for each area.
DFO tends to error on the side of caution. For example when there is conflicting data or differing opinions and agreements are not achieved amongst them, then an area is closed. This is deceiving and can leave the recreational fisherman thinking a certain area has been over fished when one of the reasons could be prawns hiding and waiting for their exoskeletons to gain strength and this could give false readings.
DFO reduced the amount of commercial traps per vessel (in 1995) which made the commercial prawners haul their gear sometimes up to three times a day. It took another 5 years until DFO implemented a single haul fishery for the commercial prawners. Did these 5 years impact our prawn stocks?
The original size limit for the commercial fishery was 30 mm, (carapace length) then rose to 32, then 33 in 98. Should a size limit be introduced for the recreational prawner, in order to preserve our stocks?
Commercial fishers have to release female prawns carrying eggs at any time until the end of June. The recreational prawners are recommend to release egg carrying prawns during winter fishing. Do we all return the egg carriers while fishing?
When I prawn, all egg carriers are returned in the same water while fishing. As for the size limit, I hope it hasnt come to that stage where this has to be implemented.