Identification of Skeletal Deformities in Far Eastern Catfish, Silurus asotus under Indoor Aquaculture Condition

Yang, Won Seok; Gil, Hyun Woo; Yoo, Gwang Yeol; Park, In-Seok

doi:10.12717/dr.2015.19.3.153

Cited by 8 publications

(10 citation statements)

References 20 publications

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“…Far Eastern catfish, Silurus asotus , is a member of the typical freshwater Siluridae, and an important commercial catfish in Korea (Kim et al, 1988). The fish is warm water fish so it inhabits 20–27℃ and it lives soft ground (Yang et al, 2015). And the fish is nocturnal so it active night and it is carnivorous fish so it mostly predates not only crustaceans but also aqatic animals.…”

Section: Introductionmentioning

confidence: 99%

The Anesthetic Effects of Clove Oil and MS-222 on Far Eastern Catfish, Silurus asotus

Park¹

2019

Dev. Reprod.

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The objective of this study is to evaluate the anesthetic effects of clove oil and tricaine methanesulfonate (MS-222) on the Far Eastern catfish, Silurus asotus , by measuring the times to anesthesia and recovery. Each anesthetic effect of clove oil and MS-222 was tested in two groups of fish with different body sizes: a group of small fish (mean body length: 15.5±1.58 cm, mean body weight: 50.1±5.91 g, n=20) and a group of large fish (mean body length: 31.5±4.19 cm, mean body weight: 302.1±15.22 g, n=20). The anesthetics were used at concentrations of 200, 300, 400, 500, and 600 ppm. The results showed significant relationships between the concentration of the anesthetic and the body size of the fish. Each of these variables showed statistical significance ( p <0.05). The time to anesthesia decreased linearly with increasing concentration in the large fish for both clove oil and MS-222 ( p <0.05). Based on an optimal anesthetic time of approximately 1 min, the preferred concentrations of the anesthetics were 500 ppm for clove oil and 600 ppm for MS-222. Both the anesthetic time and the recovery time were shorter for the small fish than for the large fish ( p <0.05). Our study showed that the smaller-sized Far Eastern catfish was more easily anesthetized and recovered more rapidly from anesthesia than the larger-sized fish.

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Section: Introductionmentioning

confidence: 99%

The Anesthetic Effects of Clove Oil and MS-222 on Far Eastern Catfish, Silurus asotus

Park¹

2019

Dev. Reprod.

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“…The far eastern catfish Silurus asotus is a member of the freshwater Siluridae family. In Korea, its annual production is about 8,000 metric tons ( Kim et al, 1988 ; Yang et al, 2015 ). Although the demand for this species has increased in recent years, two factors limit the profitability of culturing far eastern catfish.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cryoprotectants and Diluents on the Cryopreservation of Spermatozoa from Far Eastern Catfish, Silurus asotus

Gil¹,

Lee²,

Park³

2017

Dev Reprod

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The aim of this study was to compare the efficacy of cryopreservation methods for ex situ conservation of spermatozoa from far eastern catfish, Silurus asotus. The spermatozoa activity index (SAI) and hatching rates were higher in spermatozoa stored in Alserver’s solution than those of spermatozoa stored in glucose solution. The SAI and hatching rates in all experimental groups gradually decreased with increasing duration of storage. Additionally, the SAI and hatching rates gradually decreased with increasing thawing temperatures at all storage durations (P<0.05). Based on the SAI and hatching rates, our results suggest that the optimal cryopreservation conditions of catfish spermatozoa involve storage in Alserver’s solution with 15% ethylene glycol, and thawing at 25℃. Cryopreservation of spermatozoa is a useful and reliable technique for conserving gene resources and for artificial propagation of far eastern catfish.

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“…The aquaculture production of Far Eastern catfish in Korea was 4,267 tons at 2015, and increasing gradually until now. Far Eastern catfish has good taste than the channel catfish is that increasingly popular in the spotlight to consumers ( Yu et al, 2009 ; Yang et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

“…Gonadosomatic index (GSI) of induced triploid was also very low, and induced triploid was produced a heteroploid gamete. Therefore induced triploid became functionally sterile ( Thorgaard, 1983 ; Lincoln & Scott, 1984 ; Kim et al, 2001 ; Gil et al, 2016 ). Because induced triploid sterile, to convert the energy used in the reproductive growth of the body.…”

Section: Introductionmentioning

confidence: 99%

Change of Various Characteristics between Spawning and Non-spawning Season in Diploid and Induced Triploid Far Eastern Catfish, Silurus asotus

2017

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The purpose of this study is to investigate the differences fatty acids and hormonal parameters in the spawning and non-spawning season between the diploid and induced triploid Far Eastern catfish, Silurus asotus. The measured triploids were produced by cold shock for 50 min at 4℃ in May 2014, the spawning season of diploid was in May, and the non-spawning season was designated in January. Estradiol and testosterone and gonadosomatic index of diploid were higher than those of induced triploid in spawning season (P<0.05), and those of diploid in spawning season were higher than non-spawning season. On the other hand, thyroid stimulating hormone and thyroxine of induced triploid were higher than those of diploid in spawning season (P<0.05). Erythrocyte count of diploid was higher than that of induced triploid in spawning season and non-spawning seasons. Mean corpuscular volume and mean corpuscular hemoglobin of induced triploid were higher than those of diploid in both seasons (P<0.05). Percentages of total saturated fatty acids and n-3 polyunsaturated fatty acids of induced triploid were higher than those of diploid in spawning season, but those of diploid were higher in non-spawning season (P<0.05). Percentages of total mono unsaturated fatty acids and total n-6 polyunsaturated fatty acids of diploid were higher than those of induced triploids in spawning season, while those of induced triploid in non-spawning season were higher (P<0.05). Therefore, induced triploids in the spawning season tend to concentrate on growth and lipid-synthesization, whereas, diploids concentrate on reproduction and gonadal maturation rather than on growth. In non-spawning season, growth and lipid-synthesization were not significantly different between diploid and induced triploid.

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Identification of Skeletal Deformities in Far Eastern Catfish, Silurus asotus under Indoor Aquaculture Condition

Cited by 8 publications

References 20 publications

The Anesthetic Effects of Clove Oil and MS-222 on Far Eastern Catfish, Silurus asotus

The Anesthetic Effects of Clove Oil and MS-222 on Far Eastern Catfish, Silurus asotus

Effects of Cryoprotectants and Diluents on the Cryopreservation of Spermatozoa from Far Eastern Catfish, Silurus asotus

Change of Various Characteristics between Spawning and Non-spawning Season in Diploid and Induced Triploid Far Eastern Catfish, Silurus asotus

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