Catches characteristics between fishing area and non-fishing area in the shrimp beam trawl of Geoje waters, Korea

Cho, Sam-Kwang; Kim, Sujeong; Park, Chang-Doo; Cha, Bong-Jin

doi:10.3796/ksft.2013.49.4.377

Cited by 2 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…-348-Yonghae KIM, Dae-Sung WHANG The main catches of our fishing trials were lower than the average for the year of the trials (Jang et al, 2009;Cho et al, 2013), while the bycatch including garbage were unable to compare due to lack of previous data. The selectivity of juvenile fish was not affected by the size frequency, possibly due to too small a mesh size in the cod end of the shrimp trawl, although an obvious effect was observed on the reduction in weight of juvenile fish and garbage.…”

Section: Resultsmentioning

confidence: 93%

Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl

Kim¹,

Whang²

2014

Journal of the Korean society of Fisheries Technology

View full text Add to dashboard Cite

An active stimulating device, such as a fluttering net or canvas attached to the end of a cod end generating a shaking motion, could help to encourage the escape of juvenile fish positioned passively near the net. Field fishing trials using a shrimp beam trawl were carried out to examine the effect on the reduction of juvenile fish or other discard catch by generating a shaking movement of the cod end using an unbiased cap-like round canvas. The mean period of the shaking motion with the round canvas was -14 s, and the mean amplitude was 0.4 m as measured by peak event analysis and the global wavelet method. The bycatch of juvenile fish in 14 trials decreased by -30% and by -25% using a steady cod end for the total bycatch using a shaking cod end in the shrimp beam trawl, while the marketing catch was similar between steady and shaking cod ends. There was no difference in the body size of the shrimp or fish and species composition between the steady and shaking cod ends. Above results demonstrate a new method for bycatch reduction using an active stimulating device, although more detailed studies are needed.

show abstract

Section: Resultsmentioning

confidence: 93%

Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl

Kim¹,

Whang²

2014

Journal of the Korean society of Fisheries Technology

View full text Add to dashboard Cite

show abstract

“…In other unvegetated coastal habitats of southern Korea, however, those species were not common decapod species. For example, Trachysalambria curvirostris (prawn) and Crangon hakodatei (caridean shrimp) were dominant decapod species in southern Geojo Island (Cho et al ., 2013), while C. hakodatei , Plesionika izumiae and C. bimaculata were common decapod species in Nakdong River estuary (Lee et al ., 2009). Thus, although abundant decapod species are often similar in seagrass beds, different dominances of these taxonomic groups were evident between vegetated and non-vegetated habitats indicating differences of habitat preferences of each decapod species.…”

Section: Discussionmentioning

confidence: 99%

Seasonal and habitat structures of crustacean decapod assemblages associated withZostera marinabeds in northern Jinhae Bay, Korea

Park¹,

Kwak

2018

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

Crustacean decapod assemblages were surveyed in Zostera marina beds adjacent to tidal flats (ET) and rocky shore (ER), and in unvegetated habitats (UV). Decapod samples were collected monthly throughout 2002 using a small beam trawl from northern Jinhae Bay, Korea. Water temperature, salinity, eelgrass biomass, sediment composition and organic matter were also monitored to assess any correlation between environmental variables and decapod fauna. A total of 31 decapod species belonging to five taxa (three prawns, 13 caridean shrimps, one hermit crab, one mud shrimp and 13 crabs) were collected at three different habitats. To assess variations in decapod assemblages in relation to habitat type and season, various multivariate analyses were used. The dominant caridean shrimps were Palaemon macrodactylus, Alpheus digitalis and Crangon uritai, and the dominant crabs were Charybdis japonica, Hemigrapsus penicillatus and Charybdis bimaculata. The number, abundance and diversity of decapod species varied greatly with habitat type and season, peaking in eelgrass beds and during spring, and showing the lowest catch rate in unvegetated habitat and during winter months. The nMDS ordination and multivariate analyses revealed that habitat type and season were determinant factors affecting the structure of decapod assemblages. Seasonal shifts in the abundance of decapods corresponded with changes in eelgrass biomass and loss on ignition (LOI), but not with water temperature or salinity.

show abstract

Catches characteristics between fishing area and non-fishing area in the shrimp beam trawl of Geoje waters, Korea

Cited by 2 publications

References 11 publications

Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl

Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl

Seasonal and habitat structures of crustacean decapod assemblages associated withZostera marinabeds in northern Jinhae Bay, Korea

Contact Info

Product

Resources

About