Bycatch of rockfish and other species in British Columbia spot prawn traps: Preliminary assessment using research traps

Favaro, Brett; Rutherford, Dennis T.; Duff, Stefanie D.; Côté, Isabelle M.

doi:10.1016/j.fishres.2009.11.013

Cited by 18 publications

(23 citation statements)

References 15 publications

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“…The previous study found that 78 species were discarded in trammel nets fishery in the southern Portugal (Erzini et al, 2002). A slightly similar diversity of discarded species was found in study on trammel nets fishery in the Mediterranean with the ratio of 15% to 49% discarded (Goncalves et al, 2007). However, the study from India by Kumar et al, (2013) reported that approximately 76% of bycatch by weight were collected from crab gill net.…”

Section: Discussionsupporting

confidence: 53%

“…Furthermore, from a total of 147 species identified as bycatch, of which 26.3% or 25 species collected in the bay was considered discarded species and 47.1% or 41 species in the offshore area. These figures are considered much lower than the ratios produced by trawlers worldwide (Perez and Wahrlich, 2005) but higher than that of a spot prawn trap (16.8%) (Favaro et al, 2009). Comparing to the net of similar principle, only study on trammel net was well reported.…”

Section: Discussionmentioning

confidence: 70%

“…Moreover, it was observed that discarded in tropical regions were mostly dominated by small bodied animals, whereas temperate and sub-polar fisheries discarded mainly commercially important larger bodied species (Alverson et al, 1994). Normally, fishermen retains all species that have some commercial value but when they can harvest only one or a few individuals, they will keep them for personal consumption, due to the low selling value (Batista et al, 2009;Goncalves et al, 2007). A similar practice, based on direct observation, is also observed for crab gill net fishermen in this area.…”

Section: Discussionmentioning

confidence: 76%

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Fazrul¹,

Hajısamae²,

Ikhwanuddin³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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This study assessed bycatch composition and some factors affected assemblage from blue swimming crab fisheries in semi-enclosed Pattani Bay and offshore area, the Gulf of Thailand. Samples were collected from May 2013 to September 2014 by using crab gill net. One hundred seventy four of bycatches were found within proportion of 52.2% in the bay and 49.5% from offshore. Moreover, discarded species from the bay and offshore were 26.3% and 47.1%, respectively. The most dominant species in the bay was horse shoe crab (Carcinoscorpius rotundicauda) while offshore was scaly whipray (Himantura imbricate). Abundance of bycatch in the bay was affected both by habitat (P<0.005) and season (P<0.001) while abundance from offshore was affected only by season (P<0.05). Species richness of bycatch both in the bay and offshore were influenced significantly by season (P<0.001 and P<0.005, respectively). The most abundance bycatch in the bay was found in the inner bay while at 15m depth for offshore. The result of nMDS ordination indicated a separation of three major groups of assemblage in the bay; inner, middle and outer bay but there was no obvious segregation from offshore.

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Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 76%

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Fazrul¹,

Hajısamae²,

Ikhwanuddin³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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“…Appropriate resource regulations are moderately present in both the recreational and commercial fishing sectors (Marliave and Challenger 2009, Cloutier 2010, Favaro et al 2010, Yamanaka and Logan 2010, Chalifour 2012, Haggarty 2014. The majority of activities permitted within the RCAs do not negatively affect inshore rockfish populations (Yamanaka andLogan 2010, Haggarty 2014).…”

Section: A Appropriate Resource Regulations: Regulations Must Matchmentioning

confidence: 99%

“…The majority of activities permitted within the RCAs do not negatively affect inshore rockfish populations (Yamanaka andLogan 2010, Haggarty 2014). However, there is evidence to suggest that prawn (e.g., genus Pandalus) trapping within RCAs could cause significant rockfish bycatch, because rockfish are often found in recovered prawn traps (Favaro et al 2010). Additionally, prawns are a key food source for rockfish, and the continued removal of their prey from RCAs could limit rockfish recovery (Cloutier 2010, Haggarty 2014.…”

Section: A Appropriate Resource Regulations: Regulations Must Matchmentioning

confidence: 99%

Pacific Canada’s Rockfish Conservation Areas: using Ostrom’s design principles to assess management effectiveness

Lancaster¹,

Haggarty²,

Ban³

2015

E&S

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ABSTRACT. International declines in marine biodiversity have lead to the creation of marine protected areas and fishery reserve systems. In Canada, 164 Rockfish Conservation Areas (RCAs) were implemented between 2003 and 2007 and now cover 4847.2 km² of ocean. These reserves were created in response to widespread concern from fishers and nongovernmental organizations about inshore rockfish (genus Sebastes) population declines. We used the design principles for effective common-pool resource management systems, originally developed by Elinor Ostrom, to assess the social and ecological effectiveness of these conservation areas more than 10 years after their initial implementation. We assessed the relative presence or absence of each design principle within current RCA management. We found that 2 of the 11 design principles were moderately present in the recreational fishery. All other design principles were lacking for the recreational sector. We found that 2 design principles were fully present and 5 were moderately present in the commercial sector. Four design principles were lacking in the commercial sector. Based on this analysis, we highlight 4 main areas for management improvement: (1) create an education and outreach campaign to explain RCA rules, regulations, boundaries, and the need for marine conservation; (2) increase monitoring of users and resources to discourage noncompliance and gather the necessary data to create social buy-in for marine conservation; (3) encourage informal nested governance through stakeholder organizations for education and self-regulation (e.g. fisher to fisher); and (4) most importantly, create a formal, decadal RCA review process to gather stakeholder input and make amendments to regulations and RCA boundaries. This information can be used to inform spatial management systems both in Canada and internationally. This analysis also contributes to a growing literature on effectively scaling up small-scale management techniques for large-scale, often federally run, common-pool resource systems.

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Effects of mesh size, fishing depth and season on the catch and discards of short mackerel Rastrelliger brachysoma gillnet fishery at the mouth of Pattani Bay, Thailand

et al. 2022

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Bycatch of rockfish and other species in British Columbia spot prawn traps: Preliminary assessment using research traps

Cited by 18 publications

References 15 publications

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Pacific Canada’s Rockfish Conservation Areas: using Ostrom’s design principles to assess management effectiveness

Effects of mesh size, fishing depth and season on the catch and discards of short mackerel Rastrelliger brachysoma gillnet fishery at the mouth of Pattani Bay, Thailand

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Bycatch of rockfish and other species in British Columbia spot prawn traps: Preliminary assessment using research traps

Cited by 18 publications

References 15 publications

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Pacific Canada&#8217;s Rockfish Conservation Areas: using Ostrom&#8217;s design principles to assess management effectiveness

Effects of mesh size, fishing depth and season on the catch and discards of short mackerel Rastrelliger brachysoma gillnet fishery at the mouth of Pattani Bay, Thailand

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Pacific Canada’s Rockfish Conservation Areas: using Ostrom’s design principles to assess management effectiveness