• 농업과학연구
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• 제47권4호
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• pp.815-827
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• 2020

The epidermal growth factor (EGF) transgenic soybean was developed and biosynthesis of human epidermal growth factor (hEGF) in soybean seeds was confirmed. Also, EGF transgenic soybean were found to contain a herbicide resistance selectable marker by introduction of phosphinothricin acetyltransferase (PAT) gene from the Streptomyces hygroscopicus. For biosafety assessment, the EGF transgenic soybean expressing the EGF biosynthesis gene EGF and herbicide resistant gene PAT was tested to determine effects on survival of Cyprinus carpio, commonly used as a model organism in ecotoxicological studies. C. carpio was fed 100% ground soybean suspension, EGF soybean or non-genetically modified (GM) counterpart soybean (Gwangan). Gene expression of EGF soybean was confirmed by PCR and ELISA to have EGF/PAT. Feeding test showed that no significant differences in cumulative immobility or abnormal response between C. carpio samples fed on EGF soybean and non-GM counterpart soybean. The 48 h-EC50 values of the EGF and non-GM soybean were 1,688 mg·L-1 (95% confidence limits: 1,585 - 1,798 mg·L-1) and 1,575 mg·L-1 (95% confidence limits: 1,433 - 1,731 mg·L-1), respectively. The soybean NOEC (no observed effect concentration) value for C. carpio was suggested to be 625 mg·L-1. We concluded that there was no significant difference in toxicity for non-target organisms (C. carpio) between the EGF soybean and non-GM counterparts.

• Parasites, Hosts and Diseases
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• 제21권1호
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• pp.21-26
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• 1983

As a series of studios on the suitability as a second intermediate host of Clcnorchis sinensis, the wormicidal effects of mucus from epidermis of Cyprinus carpio nudus were observed. The results obtained were sumlnarized as follows : On the silica gel thin layer chromatography with the greenisll yellow supernatant in acetone: benzene110:90 as carrier, seven spots were observed in iodine chamber. The spot of Rf. 0.225 value among them disclosed the strongest wormicidal effect on the cercaria, the encysted metacercaria, and the adult of C. sinensis. hfeanwhile, no seasonal variations were found in Rf. values and effect of the wormicidal fractions. The wormicidal materials in epidermal mucus of C. carpio nudes and Carassius carassius were compared in their effect, and the former was Inore effective killing substance than the latter. It seemed that C. carpio nodus could not be proper intermediate host of C. sinensis according to results of the present study, in addition to our previous observation results.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2010년도 추계학술대회 논문집
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• pp.291-292
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• 2010

• 수산해양기술연구
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• 제31권1호
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• pp.24-28
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• 1995

Exercise physiology of fish was studied by means of Electro-cardio-gram(ECG) technique with wired electrode system. Effects of swimming activity on the heart rate change for carp Cyprinus carpio was observed and analysed under swimming speeds among 1~3 Body Length/s and swimming durations of 10 and 60 minutes in the flume tank. The heart rate increase during swimming activity was observed in higher speed and longer duration conditions. The exercise effect on the heart rate continued even after fish stopped swimming. The time for recovery after exercise was tended to be elongated with the higher exercise condition.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.526-527
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• 2001

1999년 8월경, 경상남도 양산석 한 양식장 육상수조에서 사육되고 있는 잉어와 향어(Cyprinus carpio)에서 장포자충증이 발생하여 일주일 만에 약 10％의 폐사가 발생하였다. 본 증에 의한 피해 규모가 크지는 않지만 아직까지 확실한 제어 대책이 아직 없는 실정이다. 본 질병의 숙주에 대한 영향을 평가하기 위하여 감염 예를 대상으로 병리조직학적 관찰을 실시한 결과를 보고하고 숙주에 미칠 수 영향에 대하여 고찰하였다. (중략)

• Fisheries and Aquatic Sciences
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• 제27권6호
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• pp.337-345
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• 2024

This study looked at some biometric and reproductive aspects of the Common carp (Cyprinus carpio) - the overexploited fish species in the Geray Reservoir as a foundation to develop an efficient fisheries management strategy. 50 fish samples (20 to 44 cm and 130 to 2,400 g) were collected between October and May 2022 using a cast net with a mesh size of 6 cm. The ratio of male to female C. carpio (1:0.52) was deviating from the anticipated 1:1 ratio. The absolute fecundity of C. carpio was relatively low (12,375 to 31,392 eggs). Gonadosomatic index varied from 0.01 to 4.6 (male) to 0.24-12.75 (female), and the spawning period of C. carpio extended from December to January. The length-weight relationships for males (TW = 0.0009TL^3.87) and females (TW = 0.0007L^3.97) indicate that C. carpio had positive allometric growth; which may have been caused by unsuitable habitat conditions and overfishing. There is a need to develop fisheries management like implementing integrated conservation efforts and reducing wetland farming. For this, this information provides a baseline data.

• 한국수산과학회지
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• 제32권3호
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• pp.261-265
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• 1999

시안의 만성적 조건에서 이스라엘 잉어의 생존, 섭이 및 성장에 미치는 독성영향을 파악하기 위하여 유수식방법에 의해 6주 동안 실험을 실시하였다. 시안의 만성적 조건하에 노출시킨 이스라엘잉어의 생존율은 시안농도 $151{\mu}$g/$\ell$이상에서 유의한 감소를 나타내었고, 실험종료시 시안농도 151, $289{\mu}$g/$\ell$에서 대조구에 비해 각각 15.2, $24.5\%$가 감소하였다. 섭이율은 시안농도 $151{\mu}$g/$\ell$에서는 3주, $289{\mu}$g/$\ell$에서는 1주 후부터 실험종료까지, 사료효율은 시안농도 $151{\mu}$g/$\ell$이상에서 2주 후부터 실험종료시까지 대조구에 비해 유의한 감소가 인정되었다. 성장률 및 일일성장율은 시안농도 $73{\mu}$g/$\ell$에서 6주 후에, 시안 농도 $151{\mu}$g/$\ell$이상에서는 2주 후부터 실험 종료시가지 유의한 감소를 나타냈다.

• 수산해양기술연구
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• 제25권4호
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• pp.191-199
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• 1989

본 연구에서는 이스라엘잉어 Cyprinus carpio를 체장과 체중별로 분류하여 방위별 표적강도를 측정한 후, 체장 및 체중의 변화에 따른 표적강도와의 관계를 고찰하였으며, 그 결과는 다음과 같다. 1. 이스라엘잉어를 대상으로 하여 측정된 방위별 표적강도는 부레의 위치변화에 따라 심한 변화폭을 보였으나, 대체적으로 최대표적강도의 방위별 분포는 dorsal aspect인 경우 등쪽을 기준하여 $10^{\circ}$ 정도의 방위변화에서 최대였으며, side aspect인 경우 음원의 수직 측면상의 5$^{\circ}$~$10^{\circ}$에서 최대였다. 2. 이스라엘잉어에 대한 체장, 체중별 표적강도는 체장과 체중에 비례하여 지수함수적으로 증가하였으며, 체장(L) 및 체중(W)의 변화에 따른 표적강도의 관계식은 다음과 같다. TS sub(L)=20 LogL-65.4. TS sub(W)=6.7 Log W-53.7. TS sub(L): 체장에 대한 표적강도(dB). TS sub(W): 체중에 대한 표적강도(dB).

• 한국어병학회지
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• 제15권2호
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• pp.49-56
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• 2002

Effects of Temperature on the Pharmacokinetics of norfloxecin (NFX) were studied in the cultured carp,Cyprinus carpio, and cel, Anguilla japonica, using high performance liquid chromatography (HPLC) originally developed for quinolone determination in livesrocks. Pharmacokinetics of NFX was apparently affected by ambiem water temperature. In a two-compaament model for carp after oral dosage of 20 mg/K01 at $13^{\circ}C$ and $23^{\circ}C$ and 5.20/hr, respectively. In carp the $K_{\iota\nu}$, $T_{max}$and $C_{max}$ for carp at $13^{\circ}C$ were 13.30/hr, 17.44 ${\mu}g$/$m\ell$ and 7.00 ${\mu}g$/$m\ell$, respectively. The" correspoeding values at $23^{\circ}C$ were 3.93/hr, 15.40 ${\mu}g$/$m\ell$ and 9.44 ${\mu}g$/$m\ell$, respectively. The AUC and T were 355.66 ${\mu}g$ hr/$m\ell$, and 12.70 hr at $13^{\circ}C$ and 417,24 ${\mu}g$ hr/$m\ell$ and 13.86 hrs at $23^{\circ}C$, respectively. Similar trends were revealed in the NFX pharmacokinetics of eel kept under the two water temperature regimes aftee oral NFX dosage of 20 mg/kg. These pharmacokinetkal results have some implication in the optimal usage of recently introduced antibacterials in farmed fish, which were originally adapted for poultry and mammalian species.

• 한국수산과학회지
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• 제49권3호
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• pp.317-322
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• 2016

This study was carried out to investigate the effects of various dietary lipid sources on the growth performance, body composition, and fatty acid profiles of juvenile fancy carp (Cyprinus carpio var. koi). Three replicate groups of fish (initial mean body weight, 15.1±0.18 g) were fed one of five experimental diets containing fish oil (SLO), soybean oil (SO), linseed oil (LO), lard (LA), or a mixture of SLO, SO, and LO (Mix) for 8 weeks. Fish fed the LA diet gained less weight than did fish fed the LO diet. The feed efficiency and protein efficiency ratio of fish fed the LA and Mix diets were lower than those of fish fed the SO and LO diets. The body lipid content of fish fed the SO diet was lower than those of the other groups. Whole-body fatty acid compositions reflected the fatty acid compositions of dietary lipid sources. Fish fed the SO diet had high concentrations of linoleic acid and arachidonic acid, whereas fish fed the LO diet were rich in linolenic acid. Fish fed the SLO diet had significantly higher levels of eicosapentaenoic acid and docosahexaenoic acid compared with fish fed the SO, LO, and LA diets. The results of this study suggest that SO or LO could be used as a replacement for SLO in the diets of juvenile fancy carp without any negative effects on growth and feed utilization when the dietary essential fatty acid requirements are satisfied for juvenile fancy carp.