Sexual Maturation and Spawning in the Sandfish Arctoscopus japonicus in the East Sea of Korea

Lee, Hae-Won; Kim, Jinhee; Yong-Joo, Kang

doi:10.5657/kfas.2006.39.4.349

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…These differences may reflect local variation during the early life history, which could result in differentiation. At least some other fishes with attached demersal eggs, such as Salanx ariakensis, and Arctoscopus japonicus, show a genetic isolation by distance Lee, 2007). Robards et al (2002) showed large differences in growth and abundance of A. hexapterus among four localities in the Gulf of Alaska and suggested that these may be due more to differences in abundance and quality of their planktonic food than to temperature.…”

Section: Apersonatus a (6) C A C G A G A A A A T G A G G G A A C G Tmentioning

confidence: 97%

Molecular identification of Ammodytes (PISCES, Ammodytidae) larvae, with ontogenetic evidence on separating populations

et al. 2010

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A total of ten larval Ammodytes were collected from the Yellow (5 specimens) and Bering Seas (5), and a 638 base pair sequence from their mitochondrial DNA COI genes was analyzed for species identification. Sequences were compared with those of adult Ammodytes personatus from the East (4), the Yellow (2) and the East China Seas (2), and Japan (3). Average genetic distance was 0.064 between the Yellow Sea larvae and the Bering Sea larvae, but was 0.0043 between the Yellow Sea larvae and all the adult A. personatus except two individuals from the East Sea. NJ-tree showed that five Yellow Sea larvae were closely clustered with adult A. personatus, except for two individuals. The five Bering Sea larvae were located distantly from adult A. personatus, and are thought to be A. hexapterus. We found morphological differences among two populations of A. personatus larvae and A. hexapterus larvae in morphometric characters and pigmentation. Our results indicated that the East Sea population of A. personatus is closer to A. hexapterus than to the Yellow Sea population of A. personatus,

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Section: Apersonatus a (6) C A C G A G A A A A T G A G G G A A C G Tmentioning

confidence: 97%

Molecular identification of Ammodytes (PISCES, Ammodytidae) larvae, with ontogenetic evidence on separating populations

et al. 2010

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“…Most of CWSJ consists of catches by the Danish seine and trawl fisheries. WSJ has spawning grounds in the east coast of the Korean Peninsula (Lee et al 2006). Young fish with body lengths of approximately 8 cm have been found before recruitment in waters around area G at a stratum depth of 0-200 m in January (Yamazaki et al 1981).…”

Section: Figmentioning

confidence: 98%

Dynamics of two sailfin sandfish (Arctoscopus japonicus) stocks in the Sea of Japan, and their management

Watanabe

Sakuramoto

Sugiyama

et al. 2011

Can. J. Fish. Aquat. Sci.

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The dynamics of the northern and western Sea of Japan sailfin sandfish (Arctoscopus japonicus) stocks (NSJ and WSJ, respectively) varied simultaneously until the mid-1970s but differently thereafter. To identify the mechanisms underlying these dynamics, we evaluated the impact of environment and harvesting on NSJ by developing a recruitment model and simulating NSJ dynamics. The model was constructed based on egg production, density effect, and water temperatures in winter and spring, which correlated significantly and positively with the estimated surface mixed-layer depth. Winter water temperatures and egg production were variables common to the two stocks. Our results suggest that simultaneous dynamics resulted from similarities in variations in winter water temperatures for each stock and the difference in dynamics resulted from NSJ depletion caused by overfishing. We suggest management strategies to prevent NSJ depletion caused by unfavorable environmental conditions and overfishing, as well as to allow improved biomass recovery while taking advantage of favorable environmental conditions, and avoid further exploitation of previously depleted NSJ.Résumé : Les dynamiques des stocks du toroumoque japonais (Arctoscopus japonicus) du nord et de l'ouest de la mer du Japon (respectivement NSJ et WSJ) ont varié de concert jusqu'au milieu des années 1970 pour différer par la suite. Afin d'identifier les mécanismes sous-jacents à ces dynamiques, nous avons évalué l'impact de l'environnement et de la récolte sur le stock NSJ en mettant au point un modèle de recrutement et en simulant la dynamique du stock NSJ. Le modèle est construit sur la base de la production d'oeufs, de l'effet de la densité, et des températures de l'eau en hiver et au printemps, qui sont en corrélation significative et positive avec la profondeur estimée de la couche de mélange de surface. Les tempé-ratures de l'eau en hiver et la production d'oeufs sont des variables qui s'appliquent aux deux stocks. Nos résultats indiquent que la dynamique simultanée résulte de ressemblances dans les variations dans les températures d'hiver pour les deux stocks et que les différences de dynamique s'expliquent par un déclin du stock NSJ à cause de la surpêche. Nous proposons des stratégies de gestion pour empêcher le déclin du stock NSJ causé par les conditions environnementales défa-vorables et la surpêche, ainsi que pour permettre une meilleure récupération de la biomasse en profitant des conditions environnementales favorables et pour éviter une exploitation supplémentaire du stock NSJ déjà réduit.[Traduit par la Rédaction]

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“…The sandfish, Arctoscopus japonicas (Steindachner), is a species belonging to the family Trichodontidae (order Perciformes). The sandfish is mainly caught in the east coastal area of Korea and Akita Prefecture of Japan [1][2][3][4]. The ecology of sandfish was studied by Mio [4] and their life history in the eastern coastal waters of Korea was reviewed by Lee et al [3].…”

Section: Introductionmentioning

confidence: 99%

“…The sandfish is mainly caught in the east coastal area of Korea and Akita Prefecture of Japan [1][2][3][4]. The ecology of sandfish was studied by Mio [4] and their life history in the eastern coastal waters of Korea was reviewed by Lee et al [3]. The hatched larvae and juveniles from the spawning region inhabit at the depth of 10 m, while adults reside at the depths of 200-300 m [2,[5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Estimating Age-Specific Natural Mortality for Sandfish in the Eastern Coastal Waters of Korea

et al. 2020

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To estimate age-specific natural mortality, we proposed an age-structured biomass model with an impulsive dynamical system. In the estimation of natural mortality, we considered growth rate and also reproduction rate, growth, and catch of sandfish, Arctoscopus japonicus. Assuming a linear relationship between observed values of the catch per unit effort (CPUE) and total biomass estimated by the age-structured biomass model, we estimated the age-specific natural mortality using the CPUE and catch data, from 1994 to 2009, for varying values of the assumed initial total biomass in 1994, by selecting the largest coefficient of determination (R2). We suggested the following empirical formula: Mi=qKL∞ln(eK(i+1−t0) − 1eK(i−t0) − 1), which estimated natural mortality of sandfish, and the derived age-specific natural mortality was significantly related to fecundity and growth. The parameters of von Bertalanffy growth equation and a logistic equation of maturity with total length were derived from the data of otolith and gonad analysis of female sandfish collected from 2005 to 2008 and from 2005 to 2006, respectively. We also conducted sensitivity analysis by varying the exponent in the inverse function of total length.

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Sexual Maturation and Spawning in the Sandfish Arctoscopus japonicus in the East Sea of Korea

Cited by 7 publications

References 4 publications

Molecular identification of Ammodytes (PISCES, Ammodytidae) larvae, with ontogenetic evidence on separating populations

Molecular identification of Ammodytes (PISCES, Ammodytidae) larvae, with ontogenetic evidence on separating populations

Dynamics of two sailfin sandfish (Arctoscopus japonicus) stocks in the Sea of Japan, and their management

Estimating Age-Specific Natural Mortality for Sandfish in the Eastern Coastal Waters of Korea

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