Optimal economic fishing efforts in Korean common octopusOctopus minortrap fishery

Abstract

The Korean Government is in the process of establishing a plan for managing fishing effort by setting up the maximum fishing gear usage per fishery type for the recovery of fishery resources. This will aid settlement of disputes between fishery sectors over fishing gears, and the stability of fishing business conditions. Especially in the setting up of the maximum fishing gear usage, economic standards as well as biological standards are being considered as significant factors to promote the sustainable and economically viable development of fisheries. This study is, thus, to analyze the optimal economic fishing gear usage (EMEY) as the most economically efficient usage for the common octopus trap fishery, one of the most controversial sectors in establishing maximum fishing gear usage. Data from logbooks per trip were used for estimation of EMEY per trip because it was considered there were limitations of data available for analyses. As a finding drawn from the analyses, the EMEY of common octopus trap vessels per trip has to be decreased by approximately 13%. That is, reducing the trip trap usage up to the level of EMEY can lead to the reduction of trip fishing costs, thereby resulting in increased trip profits.KEY WORDS: common octopus, fisheries management, maximum economic yield, maximum sustainable yield, open access, optimal economic fishing effort, trap fishery.

The traditional small-scale octopus trap fishery off the Galician coast (Northeastern Atlantic): Historical notes and current fishery dynamics

“…analyse "optimal economic fishing efforts" (e.g. Kim et al, 2008), and evaluate the implications of the catch composition in relation to discards and fishing opportunities (Villasante et al, 2015).…”

Multiple paternity in the common long‐armed octopusOctopus minor(Sasaki, 1920) (Cephalopoda: Octopoda) as revealed by microsatelliteDNAanalysis

“…In addition, the appropriate use of multiple paternity strategies may assist fishery management in alleviating the sharp decline of Octopus minor populations from overfishing (Kim et al . ).…”

“…Although O. minor has become a commercially important cephalopod in the north of China (Kim et al . ; Zheng et al . ) with the launch of artificial propagation and release, its paternity pattern remains unknown so far.…”

Feeding intensity and molecular prey identification of the common long-armed octopus, Octopus minor (Mollusca: Octopodidae) in the wild

“…The common long-armed octopus, Octopus minor (Sasaki 1920) is a benthic and neritic octopod that has become a commercially important species in the north of China and in South Korea [1,2] and is identified to be furthermore ecologically important as a generalist predator. A national germplasm reserve was established at the Moon Lake (Fig 1) in 2012 to serve as conservation for the genetic resource of O. minor because of the overfishing.…”