Effect of two collapsible pot designs on escape rate and behavior of the invasive swimming crabs Charybdis japonica and Portunus pelagicus

Archdale, Miguel Vázquez; Añasco, Cherry Pilapil; Kawamura, Yasuo; Tomiki, Sanae

doi:10.1016/j.fishres.2007.02.008

Cited by 28 publications

(9 citation statements)

References 26 publications

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“…This restrictive entrance does not allow green crabs to escape once captured; however; it also makes it harder for crabs to enter the traps (Bergshoeff et al, 2018). A large trap entrance facilitates entry, but can also increase the frequency of escapes, thereby reducing capture efficiency (Archdale et al, 2007). In our design, the strings caused both the upper and lower panels of the entry slit to curve outwards (Fig.…”

Section: Discussionmentioning

confidence: 99%

Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada

Bergshoeff

McKenzie

Favaro

2019

PeerJ

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The European green crab (Carcinus maenas) is a crustacean species native to European and North African coastlines that has become one of the world’s most successful marine invasive species. Targeted fishing programs aimed at removing green crabs from invaded ecosystems commonly use Fukui multi-species marine traps. Improving the efficiency of these traps would improve the ability to respond to green crab invasions. In this study, we developed four distinct trap modifications that were designed to facilitate the successful capture of green crabs, with the goal of improving the performance of the Fukui trap. We tested these modifications in situ during the summer of 2016 at two locations in Placentia Bay, Newfoundland. We discovered that three of our modified Fukui trap designs caught significantly more green crabs than the standard Fukui trap, increasing catch-per-unit-effort (CPUE) by as much as 81%. We conclude that our top-performing modifications have great potential for widespread use with existing Fukui traps that are being used for green crab removal efforts.

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Section: Discussionmentioning

confidence: 99%

Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada

Bergshoeff

McKenzie

Favaro

2019

PeerJ

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“…Leland et al (2013) also found round-shaped traps be more effective in catching BSC than were rectangular, wire and hoop nets. Funnel-type entrances tend to have higher catch efficiencies than have other types of trap entrances (Vazquez Archdale et al 2006, 2007Bergshoeff et al 2019). Previous experiments on the portunid Charybdis japonica (Asian Paddle Crab) found that funnel-type entrances had higher capture efficacies than did slit entrances because they were easier to enter without the chance of entanglement (Vazquez Archdale et al 2006).…”

Section: Sampling Period Gear Sampling Periodmentioning

confidence: 95%

Evaluation of a novel research trap for surveys of blue swimmer crab populations

Hanamseth

Johnson²,

Schilling³

et al. 2022

Mar. Freshw. Res.

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Surveying free-ranging crab populations is important for monitoring the health of exploited stocks and predicting future productivity. Here, we present a novel research trap design for use in fisheries-independent surveys of blue swimmer crab (Portunus armatus) populations, and evaluate the trap against some existing approaches within an independent survey framework. Specifically, the trap design aimed to improve efficiency for capturing smaller crabs, without adversely affecting catches of larger crabs. We quantify and report the abundance and selectivity of these traps, relative to co-located samples obtained using beam trawls and standard commercial round traps, to establish whether these small-mesh traps may offer any improvements over existing survey methods. Comparison and evaluation of these small-mesh traps against other existing survey gear, in different places and at different times, showed that the traps are more effective at catching smaller crabs when they are present, and equally or more effective at catching larger size classes of crabs. The beam trawl appeared to be effective at capturing a reasonable size range of crabs; however, the number of crabs caught (using a similar investment of time) was substantially lower than that caught in traps. This novel small-mesh research trap appears suitable for fisheries-independent surveys of portunid crab species.

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“…This restrictive entrance does not allow green crabs to escape once captured; however; it also makes it harder for crabs to enter the traps (Bergshoeff et al, 2018). A large trap entrance facilitates entry, but can also increase the frequency of escapes, thereby reducing capture efficiency (Archdale et al, 2007). In our design, Manuscript to be reviewed the strings caused both the upper and lower panels of the entry slit to curve outwards ( Fig.…”

Section: Effect Of Trap Type Of Crab Sizementioning

confidence: 99%

Peer Review #3 of "Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada (v0.1)"

McDonald¹

2019

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The European green crab (Carcinus maenas) is a crustacean species native to European and North African coastlines that has become one of the world's most successful marine invasive species. Targeted fishing programs aimed at removing green crabs from invaded ecosystems commonly use Fukui multi-species marine traps. Improving the efficiency of these traps would improve the ability to respond to green crab invasions. In this study, we developed four distinct trap modifications that were designed to facilitate the successful capture of green crabs, with the goal of improving the performance of the Fukui trap. We tested these modifications in situ during the summer of 2016 at two locations in Placentia Bay, Newfoundland. We discovered that three of our modified Fukui trap designs caught significantly more green crabs than the standard Fukui trap, increasing catch-per-uniteffort (CPUE) by as much as 81%. We conclude that our top-performing modifications have great potential for widespread use with existing Fukui traps that are being used for green crab removal efforts.

show abstract

Effect of two collapsible pot designs on escape rate and behavior of the invasive swimming crabs Charybdis japonica and Portunus pelagicus

Cited by 28 publications

References 26 publications

Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada

Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada

Evaluation of a novel research trap for surveys of blue swimmer crab populations

Peer Review #3 of "Improving the efficiency of the Fukui trap as a capture tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada (v0.1)"

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