Prospective study of the fishery of the shrimp Plesionika narval (Fabricius, 1787) in the Northeastern Atlantic

Abstract

Several experimental surveys were carried out in the Northeastern Atlantic, Madeira archipelago from 1991 to 2008 to explore new fisheries resources. This study examined the selectivity of bottom and floating traps and the analysis of yield-per-recruit (YPR) and biomass-per-recruit (BPR) providing helpful insight to the management of the shrimp Plesionika narval. A total of 28,262 specimens were sampled and the analysis of length at first capture returned higher values when using floating traps indicating that these traps are more selective, exerting less pressure on the resource. The YPR and BPR analysis showed that the stock is under exploited for the studied area and suggests that the use of floating traps in the commercial fisheries of P. narval is recommended, which will allow a higher maximum allowable limit of exploitation and greater yield. The results suggest that P. narval has the potential to support a viable and sustainable fishery using floating traps.Keywords: Plesionika narval, selectivity, sustainable yield, bottom traps, floating traps. Estudo prospectivo da pesca do camarão

Abundance and population structure of Plesionika narval (Fabricius, 1787) in the Northeastern Atlantic

“…A total of 62 fishing sets were carried out on the insular shelves and slopes off the archipelago of Madeira, Eastern Central Atlantic (32°00'-33°30'N; 15°30'-18°00'W) in research surveys using bottom floating traps according to Sousa et al (2017), over a period of 4 years, from 2004 to 2008.…”

Weight-length relationships of six shrimp species caught off the Madeira Archipelago, Northeastern Atlantic

“…A more detailed description of the survey's design, fishing and sampling methodologies is available in Biscoito et al (1992) and Sousa et al (2016).…”

Preliminary results on the use of semi-floating shrimp traps for the striped soldier shrimp, <em>Plesionika edwardsii</em> (Crustacea: Decapoda: Pandalidae), off the Algarve coast (southern Portugal)

“…Such is the case of the Azores archipelago, where experimental fishing with semi-floating shrimp traps took place between 65 to 400 m depth with considerable shrimp catches of the latter group (Plesionika narval and P. edwardsii) (Martins and Hargreaves 1991). A similar study conducted off Madeira from 1991 to 2008 with P. narval as a target indicated that semi-floating shrimp traps are more size-and speciesselective than benthic traps, catching larger shrimp and less by-catch, and suggesting that a fishery using these traps can be viable (Sousa et al 2017). A commercial fishery using semi-floating shrimp traps targeting P. edwardsii is practised in the South Tyrrhenian Sea (Colloca 2002, Castriota et al 2004.…”