Pub Date : 2010-05-31DOI: 10.3796/KSFT.2010.46.2.139
T. Oh, H. Cha, D. Chang, Choul-Hee Hwang, Y. Nam, S. Kwak, M. Son
This study monitored a variety of marine fish communities in artificial reefs unit of the total 5 types (Dice type, Octagonal turtle type, Two-stage tube type, Gazebo type, Tetrapod type) which are located in the marine ranching at Jeju island by scuba diving in May, July, October and December 2009. Underwater photographing was accomplished at total 3 phases (condition of artificial reefs photographing, concentric circle movement photographing and line transect photographing). The preservation condition of artificial reefs facility was very good, and the dominant species were Chromis notatus, Sebastes thompsoni, Oplegnathus fasciatus and Halichoeres poecilopterus. Fish abundance was high in May and June, and low in October and December, 2009. Chromis notatus was dominant at the all types of artificial reefs, Halichoeres poecilopterus for Gazebo type and Tetrapod type of artificial reefs, and Sebastes thompsoni for Dice type, Octagonal turtle type and Two-stage tube type of artificial reefs.
{"title":"Seasonal variation and species composition of fishes communities in artificial reef unit at marine ranching area in the coastal waters off Jeju island, Korea","authors":"T. Oh, H. Cha, D. Chang, Choul-Hee Hwang, Y. Nam, S. Kwak, M. Son","doi":"10.3796/KSFT.2010.46.2.139","DOIUrl":"https://doi.org/10.3796/KSFT.2010.46.2.139","url":null,"abstract":"This study monitored a variety of marine fish communities in artificial reefs unit of the total 5 types (Dice type, Octagonal turtle type, Two-stage tube type, Gazebo type, Tetrapod type) which are located in the marine ranching at Jeju island by scuba diving in May, July, October and December 2009. Underwater photographing was accomplished at total 3 phases (condition of artificial reefs photographing, concentric circle movement photographing and line transect photographing). The preservation condition of artificial reefs facility was very good, and the dominant species were Chromis notatus, Sebastes thompsoni, Oplegnathus fasciatus and Halichoeres poecilopterus. Fish abundance was high in May and June, and low in October and December, 2009. Chromis notatus was dominant at the all types of artificial reefs, Halichoeres poecilopterus for Gazebo type and Tetrapod type of artificial reefs, and Sebastes thompsoni for Dice type, Octagonal turtle type and Two-stage tube type of artificial reefs.","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124155787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-31DOI: 10.3796/KSFT.2010.46.2.148
K. Kang, H. Shin
) with acoustic telemetrymethod in Chungju Lake, Korea. Mandarin fish tended to stay within 1km from the release points indownstream, and had a strong diurnal behavior. They approached to the lakefront at night. They alsopreferred to stay at deep water off the lakefront. The average swimming speed was faster at night (0.4BL/s)than during a day (0.2BL/s). They swam the shallow water area at night. Catfish frequently moved betweenupstream and downstream. Catfish tended to act during a day. The average swimming speed was fasterduring a day (0.3BL/s) than at night (0.2 BL/s). The average swimming depth was 14.3m, and they tended tofloat about 4m during a day.Keywords: Acoustic telemetry,
{"title":"Movement range and behavior of mandarin fish (Siniperca scherzeri) and catfish (Parasilurus asotus) in Chungju Lake","authors":"K. Kang, H. Shin","doi":"10.3796/KSFT.2010.46.2.148","DOIUrl":"https://doi.org/10.3796/KSFT.2010.46.2.148","url":null,"abstract":") with acoustic telemetrymethod in Chungju Lake, Korea. Mandarin fish tended to stay within 1km from the release points indownstream, and had a strong diurnal behavior. They approached to the lakefront at night. They alsopreferred to stay at deep water off the lakefront. The average swimming speed was faster at night (0.4BL/s)than during a day (0.2BL/s). They swam the shallow water area at night. Catfish frequently moved betweenupstream and downstream. Catfish tended to act during a day. The average swimming speed was fasterduring a day (0.3BL/s) than at night (0.2 BL/s). The average swimming depth was 14.3m, and they tended tofloat about 4m during a day.Keywords: Acoustic telemetry,","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"56 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132480193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.243
H. Cha, Jae Bong Lee, Sukyung Kang, D. Chang, J. Choi
was investigated based on the samplescaptured in the coastal waters around Jeju Island from January 2007 to December 2008. Gonadosomatic indexbegan to increase in March, and reached a maximum between April to June. After spawning it began to decreasefrom August. Reproductive season was estimated to March-July, with peak in April. Fecundity was proportionalto the size of the female, with the clutch size varying from 33,493 eggs in the smallest female(FL27.0cm) to627,061 eggs in the largest(FL40.6cm). Size at 50% sexual maturity(FL
{"title":"Reproduction of the jack mackerel, Trachurus japonicus Temminck et Schlegel in the coastal waters around Jeju Island, Korea: Maturation and spawning","authors":"H. Cha, Jae Bong Lee, Sukyung Kang, D. Chang, J. Choi","doi":"10.3796/KSFT.2009.45.4.243","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.243","url":null,"abstract":"was investigated based on the samplescaptured in the coastal waters around Jeju Island from January 2007 to December 2008. Gonadosomatic indexbegan to increase in March, and reached a maximum between April to June. After spawning it began to decreasefrom August. Reproductive season was estimated to March-July, with peak in April. Fecundity was proportionalto the size of the female, with the clutch size varying from 33,493 eggs in the smallest female(FL27.0cm) to627,061 eggs in the largest(FL40.6cm). Size at 50% sexual maturity(FL","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130251444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.267
A. Lee, Il–Kwon Kang, H. Jo
According to the recent statistics of marine casualties in Korea, fishing boats are more likely to be ended inthe casualties, and small fishing boats especially cause much more accidents in sinking and capsizing thanany other big vessels. These casualties were mainly produced from the ignorance on the lack of own shipstability. From this view, this study aims to analyze the characteristics of stability on the crab trap fishingboat receiving transverse wave by means of carrying out the water tank test. The rolling angle of the modelship was affected largely with the displacement and the wave period of it, and the trends were shown that themagnitude of the angle was proportional to the displacement, but inversely to the wave period. And the waveheight had effect on the rolling angle just in the specific range of the wave period. The force of steady winddidn t have influence on the rolling variation significantly.Keywords: Marine casualty, Crab trap fishing boat, Stability, Stability criteria, Rolling motion
{"title":"A Study on the stability of a crab trap fishing boat with water tank experiment","authors":"A. Lee, Il–Kwon Kang, H. Jo","doi":"10.3796/KSFT.2009.45.4.267","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.267","url":null,"abstract":"According to the recent statistics of marine casualties in Korea, fishing boats are more likely to be ended inthe casualties, and small fishing boats especially cause much more accidents in sinking and capsizing thanany other big vessels. These casualties were mainly produced from the ignorance on the lack of own shipstability. From this view, this study aims to analyze the characteristics of stability on the crab trap fishingboat receiving transverse wave by means of carrying out the water tank test. The rolling angle of the modelship was affected largely with the displacement and the wave period of it, and the trends were shown that themagnitude of the angle was proportional to the displacement, but inversely to the wave period. And the waveheight had effect on the rolling angle just in the specific range of the wave period. The force of steady winddidn t have influence on the rolling variation significantly.Keywords: Marine casualty, Crab trap fishing boat, Stability, Stability criteria, Rolling motion","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125025328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.260
Chang-Heon Lee
In order to obtain the fundamental data for the marine ranch, this paper was carried out to investigate cortisolvariation in blood according to adapted time in the measurement of auditory threshold. The groups wereadapted at the experimental tanks for 0.5, 1, 3 and 6 hours, respectively. At the results, cortisol concentrationhad a deep connection with adapted time. In particular, cortisol concentration in the experimental group of 1hour was significantly increased, whereas others showed no difference comparing with the control group.When classical conditioning method with the sound coupled with a delayed electric shock was given afterthe adapted time of 1 hour and 6 hours, the rate of the conditioning completion for 6 hours was higher thanthat of 1 hour. Therefore, this suggests that the sufficient adapted time was required for the accurate auditorythreshold. Key words : Stress, Auditory threshold, Adapted time
{"title":"Stress response of black rock fish according to adapted time in measurement of auditory threshold","authors":"Chang-Heon Lee","doi":"10.3796/KSFT.2009.45.4.260","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.260","url":null,"abstract":"In order to obtain the fundamental data for the marine ranch, this paper was carried out to investigate cortisolvariation in blood according to adapted time in the measurement of auditory threshold. The groups wereadapted at the experimental tanks for 0.5, 1, 3 and 6 hours, respectively. At the results, cortisol concentrationhad a deep connection with adapted time. In particular, cortisol concentration in the experimental group of 1hour was significantly increased, whereas others showed no difference comparing with the control group.When classical conditioning method with the sound coupled with a delayed electric shock was given afterthe adapted time of 1 hour and 6 hours, the rate of the conditioning completion for 6 hours was higher thanthat of 1 hour. Therefore, this suggests that the sufficient adapted time was required for the accurate auditorythreshold. Key words : Stress, Auditory threshold, Adapted time","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115023742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.251
Chae-Woo Ma, D. Son, W. Park
,Swimming crabs, Portunus trituberculatus(Miers) are commercially important off the coasts of Korea, Japan and China. Harvest of swimming crabs has been fluctuated along their distribution ranges. Fluctuations in the interannual harvest of swimming crabs may be correlated with the survival rate during the larval period. The survival rates, intermolt periods, and growth of larval swimming crabs were investigated in the laboratory. Larval swimming crabs are released and undergo development from April to August off the western coast of Korea in the Yellow Sea. Sea surface temperatures off the western coast of Korea during the larval season were used for the laboratory experiments, and ranged from 22 to 26 C. Larvae were individually cultured at four different temperatures, 22 C, 24 C, 26 C, and 28 C. Zoea molted to megalopa at all temperatures and developed to the first crab stage at 24 C, 26 C, and 28 C. Survival rates from zoea I to the first crab stage increased with increasing temperatures. Intermolt period and the growth rate of the mean carapace length were inversely correlated with temperature. Our research helps understand the changes in survival rate and growth of larval swimming crabs resulting from changing oceanic temperatures. Further, our study suggests that the fluctuations in fishery harvest of swimming crabs off the coast of Korea may be related to changes in larval survival affected by changing ocean conditions.
{"title":"Survival rate and growth of larvae and early juveniles in the swimming crab, Portunus trituberculatus(Miers) reared in the laboratory","authors":"Chae-Woo Ma, D. Son, W. Park","doi":"10.3796/KSFT.2009.45.4.251","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.251","url":null,"abstract":",Swimming crabs, Portunus trituberculatus(Miers) are commercially important off the coasts of Korea, Japan and China. Harvest of swimming crabs has been fluctuated along their distribution ranges. Fluctuations in the interannual harvest of swimming crabs may be correlated with the survival rate during the larval period. The survival rates, intermolt periods, and growth of larval swimming crabs were investigated in the laboratory. Larval swimming crabs are released and undergo development from April to August off the western coast of Korea in the Yellow Sea. Sea surface temperatures off the western coast of Korea during the larval season were used for the laboratory experiments, and ranged from 22 to 26 C. Larvae were individually cultured at four different temperatures, 22 C, 24 C, 26 C, and 28 C. Zoea molted to megalopa at all temperatures and developed to the first crab stage at 24 C, 26 C, and 28 C. Survival rates from zoea I to the first crab stage increased with increasing temperatures. Intermolt period and the growth rate of the mean carapace length were inversely correlated with temperature. Our research helps understand the changes in survival rate and growth of larval swimming crabs resulting from changing oceanic temperatures. Further, our study suggests that the fluctuations in fishery harvest of swimming crabs off the coast of Korea may be related to changes in larval survival affected by changing ocean conditions.","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121351106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.211
Byung-Yul Cha
The fisheries resources by a set net in the coastal waters off Neungpo, Goeje Island from 2003 to 2004 were studied to determine species composition and catch variation. The main fishing period by a set net were from April to December in 2003 and from May to December in 2004. A total weight of 48 species caught through the survey period was 540,688.0kg. Most of them were 44 species of fishes and a few were 4 species of cephalopods. Dominant species was Trachurus japonicus accounting to 57.5% in total catch. Subdominant species were Trichiurus lepturus(12.9%), Engraulis japonicus(10.6%), Scomber japonicus(6.9%), Clupea pallasii(4.5%), Todarodes pacificus(2.8%) and Parapristipoma trilineaturm (1.3%). The remnant species showed a low catch, indicating the catch had less than 1% in total, respectively. T. japonicus and T. lepturus were caught throughout the survey period, but C. pallasii, Gadus macro-cephalus, Oncorhynchus keta in low temperature season and Thunnus obesus in high temperature season. The fishing ground temperature was 11.7 24.0 in range and the catch by a set net was higher in autumn than in spring and in summer with the variation of fishing ground temperature. The annual catch by a set net was much higher in 2004 than in 2003 due to high temperature( 17 ) and the recruitment of T. japonicus from offshore seas. Therefore we concluded that the catch of Neungpo fishing ground by a set net was highly related to the variation of T. japonicus catch with fishing ground temperature.
{"title":"Catch variation of a set net fishing ground in the coastal waters off Neungpo, Goeje Island","authors":"Byung-Yul Cha","doi":"10.3796/KSFT.2009.45.4.211","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.211","url":null,"abstract":"The fisheries resources by a set net in the coastal waters off Neungpo, Goeje Island from 2003 to 2004 were studied to determine species composition and catch variation. The main fishing period by a set net were from April to December in 2003 and from May to December in 2004. A total weight of 48 species caught through the survey period was 540,688.0kg. Most of them were 44 species of fishes and a few were 4 species of cephalopods. Dominant species was Trachurus japonicus accounting to 57.5% in total catch. Subdominant species were Trichiurus lepturus(12.9%), Engraulis japonicus(10.6%), Scomber japonicus(6.9%), Clupea pallasii(4.5%), Todarodes pacificus(2.8%) and Parapristipoma trilineaturm (1.3%). The remnant species showed a low catch, indicating the catch had less than 1% in total, respectively. T. japonicus and T. lepturus were caught throughout the survey period, but C. pallasii, Gadus macro-cephalus, Oncorhynchus keta in low temperature season and Thunnus obesus in high temperature season. The fishing ground temperature was 11.7 24.0 in range and the catch by a set net was higher in autumn than in spring and in summer with the variation of fishing ground temperature. The annual catch by a set net was much higher in 2004 than in 2003 due to high temperature( 17 ) and the recruitment of T. japonicus from offshore seas. Therefore we concluded that the catch of Neungpo fishing ground by a set net was highly related to the variation of T. japonicus catch with fishing ground temperature.","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127151736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.276
Seong-Kwae Park, Seong-wook Park, Hyeok-Jun Kwon
The main purpose of this research is to analyze economic feasibility of biodegradable sonw crab gill netmodel project. The results of benefit/cost analysis show that use of the biodegradable gear is economicallyfeasible. Assuming that the rate of gill net lost is 5 percent, net present value was estimated 311,898,282590,533,375won, benefit-cost ratio 1.8161.923 and internal rate of return 7.9610.59%. Thedevelopment and diffusion of biodegradable fishing gear appear to make a significant contribution tofisheries resource conservation and marine ecosystem protection. In addition, biodegradable gear productionfirms may have a good opportunity of exporting it to other coastal states, depending on the progress of WTOsubsidy negotiation.Keywords: Benfit-cost analysis, Biodegradable, Gill net, Conservation, Ecosystem
{"title":"Economic analysis of biodegradable snow crab gill net model project","authors":"Seong-Kwae Park, Seong-wook Park, Hyeok-Jun Kwon","doi":"10.3796/KSFT.2009.45.4.276","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.276","url":null,"abstract":"The main purpose of this research is to analyze economic feasibility of biodegradable sonw crab gill netmodel project. The results of benefit/cost analysis show that use of the biodegradable gear is economicallyfeasible. Assuming that the rate of gill net lost is 5 percent, net present value was estimated 311,898,282590,533,375won, benefit-cost ratio 1.8161.923 and internal rate of return 7.9610.59%. Thedevelopment and diffusion of biodegradable fishing gear appear to make a significant contribution tofisheries resource conservation and marine ecosystem protection. In addition, biodegradable gear productionfirms may have a good opportunity of exporting it to other coastal states, depending on the progress of WTOsubsidy negotiation.Keywords: Benfit-cost analysis, Biodegradable, Gill net, Conservation, Ecosystem","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132251760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.287
Han Na Lee, J. Choi, Yang-Jae Im, Joon-Taek Yoo, T. Oh, Jung Nyun Kim
(Von Siebold) captured around Jeju island from January to September, 2008. Carapace length(CL),body weight(BW) and gonad weight(GW) were measured. Gonadosomatic index(GSI) and sex ratio werecalculated. In female group, CL showed the highest value in June and decreased after August. GW showed apeak in July and decreased rapidly after August. The mean gonadosomatic Index(GSI) reached a maximumvalue between June and August. Number of egg ranged from 143,360 to 189,504.Key words :
{"title":"Maturation and spawning of Japanese spear lobster, Linuparus trigonus(Von Siebold) in Jeju Island","authors":"Han Na Lee, J. Choi, Yang-Jae Im, Joon-Taek Yoo, T. Oh, Jung Nyun Kim","doi":"10.3796/KSFT.2009.45.4.287","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.287","url":null,"abstract":"(Von Siebold) captured around Jeju island from January to September, 2008. Carapace length(CL),body weight(BW) and gonad weight(GW) were measured. Gonadosomatic index(GSI) and sex ratio werecalculated. In female group, CL showed the highest value in June and decreased after August. GW showed apeak in July and decreased rapidly after August. The mean gonadosomatic Index(GSI) reached a maximumvalue between June and August. Number of egg ranged from 143,360 to 189,504.Key words :","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130111843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-11-30DOI: 10.3796/KSFT.2009.45.4.234
Jae-Hyeong Yang, Sung Il Lee, Bong-Seong Bae, H. Cha, S. Yoon, Y. Chun, Jong Bin Kim, D. Chang
began to attach the egg massto artificial spawning seaweeds when sea temperature dropped below 10in December, spawned heavilywhen it was around 8in January, and completed the behavior when it started to increase over 10inFebruary. The hatching period of eggs was estimated to be about 60 days. The middle position in artificialspawning seaweed had the highest number of egg masses and the diameter of the egg mass ranged from 25mmto 62mm. Based on the result for the effects, the artificial spawning seaweeds of
{"title":"Development of artificial spawning seaweeds of the sandfish, Arctoscopus japonicus","authors":"Jae-Hyeong Yang, Sung Il Lee, Bong-Seong Bae, H. Cha, S. Yoon, Y. Chun, Jong Bin Kim, D. Chang","doi":"10.3796/KSFT.2009.45.4.234","DOIUrl":"https://doi.org/10.3796/KSFT.2009.45.4.234","url":null,"abstract":"began to attach the egg massto artificial spawning seaweeds when sea temperature dropped below 10in December, spawned heavilywhen it was around 8in January, and completed the behavior when it started to increase over 10inFebruary. The hatching period of eggs was estimated to be about 60 days. The middle position in artificialspawning seaweed had the highest number of egg masses and the diameter of the egg mass ranged from 25mmto 62mm. Based on the result for the effects, the artificial spawning seaweeds of","PeriodicalId":211073,"journal":{"name":"Bulletin of The Korean Society of Fisheries Technology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121753393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：