Reproductive Pattern, Size at First Maturity and Stock-Recruitment Relationships of the Argentine Stiletto Shrimp (Artemesia Longinaris, Decapoda: Penaeidae) in Southern Brazil

Dumont, Luiz Felipe Cestari; Machado, Irecê Farina; D’Incao, Fernando

doi:10.5088/atl.2011.33.2.183

Cited by 1 publication

(2 citation statements)

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“…Whereas historical landings of the first species were always below the MSY, in the case of the stiletto shrimp, it was exceeded at least in 2000, 2003, 2004(Baptista-Metri, 2007Benincá, 2013). Fishing effort directed to these shrimps has been considered excessive (Baptista-Metri, 2007;Dumont & D'Incao, 2008) and concerns about the risk of recruitment overfishing of the latter species were recently raised on a study by Dumont et al (2011).…”

Section: Discussionmentioning

confidence: 99%

“…However, it can be argued that redirecting effort for the Argentine red and stiletto shrimps in the recent years may be a response to declining biomass observed for the species in the 1990's decade. Even considering the very seasonal availability of the two southern shrimps (Baptista-Metri, 2007) and their strong inter-annual fluctuation in abundance due to environmental causes (Dumont et al, 2011), the SBS fleet reveals to be highly dependent on these "new" resources. In addition, it is noteworthy that even presenting the pink-shrimp as the main target, the pinkshrimp icing fleet has also the southern shrimps as key resources contributing, together, with 27% of the revenues and 35% of the landings.…”

Section: Discussionmentioning

confidence: 99%

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Challenges in licensing the industrial double-rig trawl fisheries in Brazil

Ricardo-Pezzuto¹,

Mastella-Benincà²

2017

Lat. Am. J. Aquat. Res.

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Bottom trawling is important in Brazilian fisheries and is currently highly multi-specific due to the overexploitation of the original targets; unselective fishing method; very large permitted fishing area and the country’s high marine biodiversity. Fishing licensing in Brazil was modified in 2012 and is now based in five criteria: target species; “expected by-catch”; “incidental catches”; fishing method and area of operation. Licenses of trawling fleets exhibit, therefore, dozens of species catchable under the first three criteria. In this paper, we analyze industrial double-rig trawling fleets targeting shrimps and demersal fishes, in order to verify in what extent the new system adhere to the current fishing reality, giving new information to improve the current management regime. A total of 4,194 trips from 191 vessels were studied between 2008 and 2010 in southern Brazil. In spite of depending economically on their targets, the fleets are formally authorized to catch a high percentage of species in common (41 to 71%), and the actual landings revealed an even greater overlapping among them (71 to 82%). Vessels licensed to catch demersal fishes obtained nearly 50% of their revenue from items not included in their licenses. It was concluded that the current system encourages excessive effort concentrations over fishing resources, as they can be legally caught by most vessels irrespective of their licenses. It is suggested that licensing should move from a species-based to a spatial-based approach, by defining smaller management areas according to the respective species assemblages. Landing composition would be, therefore, mostly a biological and technological consequence, making management more reasonable and workable under a multi-specific and mega-diverse scenario.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%