Pub Date : 1998-09-01DOI: 10.1577/1548-8640(1998)060<0272:EORSAC>2.0.CO;2
G. Haines, Steven H. Severson, T. Modde
Abstract Young razorback sucker Xyrauchen texanus (mean total length [TL] = 127 mm) and Colorado squawfish Ptychocheilus lucius (mean TL = 150 mm) were marked by freeze branding and injection of a fluorescent elastomer. The elastomer injection was made at the base of the anal fin and on the operculum (razorback suckers) or lower jaw (Colorado squawfish) and consisted of one of four colors: green, blue, red, or orange. Freeze branding had 99% retention after 15 months for both species. Elastomer recognition was better for Colorado squawfish (mean 74%) than for razorback suckers (mean 60%) after 15 months, and retention at both locations was similar. Red and orange had the best recognition and blue had the poorest. Red and orange elastomer injected in young Colorado squawfish could be detected (95%) for 5 months. One person implanting elastomer at two locations on each fish and one person anesthetizing and handling fish can mark 130–140 fish/h. Approximately three times that number can be freeze-branded per...
{"title":"Evaluation of Razorback Sucker and Colorado Squawfish Batch Marking Techniques","authors":"G. Haines, Steven H. Severson, T. Modde","doi":"10.1577/1548-8640(1998)060<0272:EORSAC>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0272:EORSAC>2.0.CO;2","url":null,"abstract":"Abstract Young razorback sucker Xyrauchen texanus (mean total length [TL] = 127 mm) and Colorado squawfish Ptychocheilus lucius (mean TL = 150 mm) were marked by freeze branding and injection of a fluorescent elastomer. The elastomer injection was made at the base of the anal fin and on the operculum (razorback suckers) or lower jaw (Colorado squawfish) and consisted of one of four colors: green, blue, red, or orange. Freeze branding had 99% retention after 15 months for both species. Elastomer recognition was better for Colorado squawfish (mean 74%) than for razorback suckers (mean 60%) after 15 months, and retention at both locations was similar. Red and orange had the best recognition and blue had the poorest. Red and orange elastomer injected in young Colorado squawfish could be detected (95%) for 5 months. One person implanting elastomer at two locations on each fish and one person anesthetizing and handling fish can mark 130–140 fish/h. Approximately three times that number can be freeze-branded per...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"43 1","pages":"272-275"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74670667","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 : 1998-09-01DOI: 10.1577/1548-8640(1998)060<0307:EOSCDF>2.0.CO;2
D. Waller, S. Fisher
Abstract We evaluated the safety and effectiveness of chemical treatments for killing veliger and juvenile stages of the zebra mussel Dreissena polymorpha attached to unionid mussels. Static toxicity tests were conducted on eight unionid mussel species with common aquaculture chemicals (benzalkonium chloride, formalin, hydrogen peroxide, calcium chloride, potassium chloride, and sodium chloride). The concentration and duration of each chemical treatment tested had previously been found to kill zebra mussel veligers and juveniles. Several species (e.g., Elliptio dilatata, Lampsilis cardium and Lasmigona complanata) incurred less than 10% mortality in chloride salt treatments, while in other species (e.g., Obliquaria reflexa and Leptodea fragilis) mortality varied greatly among treatment regimes. Treatments with benzalkonium chloride, formalin, and hydrogen peroxide were less than 90% effective on juvenile stages of zebra mussels and, therefore, were ruled out after preliminary trials. Limited application o...
{"title":"Evaluation of Several Chemical Disinfectants for Removing Zebra Mussels from Unionid Mussels","authors":"D. Waller, S. Fisher","doi":"10.1577/1548-8640(1998)060<0307:EOSCDF>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0307:EOSCDF>2.0.CO;2","url":null,"abstract":"Abstract We evaluated the safety and effectiveness of chemical treatments for killing veliger and juvenile stages of the zebra mussel Dreissena polymorpha attached to unionid mussels. Static toxicity tests were conducted on eight unionid mussel species with common aquaculture chemicals (benzalkonium chloride, formalin, hydrogen peroxide, calcium chloride, potassium chloride, and sodium chloride). The concentration and duration of each chemical treatment tested had previously been found to kill zebra mussel veligers and juveniles. Several species (e.g., Elliptio dilatata, Lampsilis cardium and Lasmigona complanata) incurred less than 10% mortality in chloride salt treatments, while in other species (e.g., Obliquaria reflexa and Leptodea fragilis) mortality varied greatly among treatment regimes. Treatments with benzalkonium chloride, formalin, and hydrogen peroxide were less than 90% effective on juvenile stages of zebra mussels and, therefore, were ruled out after preliminary trials. Limited application o...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"231 1","pages":"307-310"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89243591","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 : 1998-09-01DOI: 10.1577/1548-8640(1998)060<0301:DAATTE>2.0.CO;2
C. Engle, D. Heikes, David Brown, N. Stone, H. Killian
Abstract A depletion population estimation method was tested in three trials in experimental ponds and in 19 commercial ponds that held channel catfish Ictalurus punctatus. Estimates of population numbers in experimental ponds differed from measured population numbers by +6.5%, −3.8%, and −18.4%, respectively. Estimates of population weights differed from measured population weights by −0.1%, 0%, and −7.7%, respectively. Estimated population numbers in two commercial ponds in 1995 differed from measured population numbers by −0.3% to −2.4%, and estimated population weights differed from measured population weights by −3.5% to −6.1%. In 1996, depletion estimates of population weight from 17 commercial channel catfish ponds differed from measured weights by −1.4 ± 13.7%. A fourth sampling point (tested in five commercial ponds) did not significantly (P ≥ 0.05) improve the accuracy of population estimates. The depletion method appears to have potential as an alternative management tool that could be used per...
{"title":"Depletion as a Technique to Estimate Commercial Pond Inventories of Channel Catfish","authors":"C. Engle, D. Heikes, David Brown, N. Stone, H. Killian","doi":"10.1577/1548-8640(1998)060<0301:DAATTE>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0301:DAATTE>2.0.CO;2","url":null,"abstract":"Abstract A depletion population estimation method was tested in three trials in experimental ponds and in 19 commercial ponds that held channel catfish Ictalurus punctatus. Estimates of population numbers in experimental ponds differed from measured population numbers by +6.5%, −3.8%, and −18.4%, respectively. Estimates of population weights differed from measured population weights by −0.1%, 0%, and −7.7%, respectively. Estimated population numbers in two commercial ponds in 1995 differed from measured population numbers by −0.3% to −2.4%, and estimated population weights differed from measured population weights by −3.5% to −6.1%. In 1996, depletion estimates of population weight from 17 commercial channel catfish ponds differed from measured weights by −1.4 ± 13.7%. A fourth sampling point (tested in five commercial ponds) did not significantly (P ≥ 0.05) improve the accuracy of population estimates. The depletion method appears to have potential as an alternative management tool that could be used per...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"20 1","pages":"301-306"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87637882","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 : 1998-09-01DOI: 10.1577/1548-8640(1998)060<0323:LCFFT>2.0.CO;2
J. Heinen
Abstract Photoperiod effects on fish are well known, but other aspects of light control for fish tanks, including light-shock reactions caused by abrupt on-off changes in lighting, have received less attention. This article provides a discussion of light control equipment—especially timing and dimming devices—available for fish tanks, lists information about some of the units that are commercially available in North America, and mentions some systems developed by fish culturists.
{"title":"Light Control for Fish Tanks","authors":"J. Heinen","doi":"10.1577/1548-8640(1998)060<0323:LCFFT>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0323:LCFFT>2.0.CO;2","url":null,"abstract":"Abstract Photoperiod effects on fish are well known, but other aspects of light control for fish tanks, including light-shock reactions caused by abrupt on-off changes in lighting, have received less attention. This article provides a discussion of light control equipment—especially timing and dimming devices—available for fish tanks, lists information about some of the units that are commercially available in North America, and mentions some systems developed by fish culturists.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"11 1","pages":"323-330"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85225755","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 : 1998-09-01DOI: 10.1577/1548-8640(1998)060<0276:GOJAEP>2.0.CO;2
R. Gutjahr-Gobell
Abstract This study was designed to evaluate the effectiveness of six diets to promote growth, survival, and egg production in juvenile mummichogs Fundulus heteroclitus reared in the laboratory. Fish were fed one of six diets—nauplii of brine shrimp Artemia sp. (24 h posthatch), frozen brine shrimp, BioTrainer, Salomon Moist, TetraMin, or Canadian Moist—for 33 weeks. The instantaneous growth rate in mummichogs changed significantly (analysis of variance, P < 0.05) between diet treatment and over time. TetraMin and Canadian Moist produced the lowest growth overall. Survival was high for fish fed brine shrimp nauplii, frozen brine shrimp, BioTrainer, and TetraMin. There were no significant differences in egg production on the basis of total female weight. Brine shrimp nauplii, frozen brine shrimp, BioTrainer, and Salomon Moist promoted the best growth; brine shrimp nauplii, frozen brine shrimp, BioTrainer, and TetraMin promoted the best survival. Fish size rather than diet affected total egg production. Pro...
{"title":"Growth of Juveniles and Egg Production of Mummichogs Fed Different Diets in the Laboratory","authors":"R. Gutjahr-Gobell","doi":"10.1577/1548-8640(1998)060<0276:GOJAEP>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0276:GOJAEP>2.0.CO;2","url":null,"abstract":"Abstract This study was designed to evaluate the effectiveness of six diets to promote growth, survival, and egg production in juvenile mummichogs Fundulus heteroclitus reared in the laboratory. Fish were fed one of six diets—nauplii of brine shrimp Artemia sp. (24 h posthatch), frozen brine shrimp, BioTrainer, Salomon Moist, TetraMin, or Canadian Moist—for 33 weeks. The instantaneous growth rate in mummichogs changed significantly (analysis of variance, P < 0.05) between diet treatment and over time. TetraMin and Canadian Moist produced the lowest growth overall. Survival was high for fish fed brine shrimp nauplii, frozen brine shrimp, BioTrainer, and TetraMin. There were no significant differences in egg production on the basis of total female weight. Brine shrimp nauplii, frozen brine shrimp, BioTrainer, and Salomon Moist promoted the best growth; brine shrimp nauplii, frozen brine shrimp, BioTrainer, and TetraMin promoted the best survival. Fish size rather than diet affected total egg production. Pro...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"42 1","pages":"276-283"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77176704","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 : 1998-06-01DOI: 10.1577/1548-8640(1998)060<0227:TAPRMO>2.0.CO;2
Dale D. Lyon, M. Fisher
Abstract Survival of larval red drum Sciaenops ocellatus (36 h posthatch) stocked into fertilized culture ponds was monitored to determine the effects of temperature and pH. In 108 pond trials, larvae were stocked at pH values ranging from 8.5 to 10.8 and temperatures ranging from 19.8°C to 30.8°C. Fish were acclimated for 15–25 min before stocking. Culture ponds were stocked only when temperature, dissolved oxygen, and salinity were conducive to survival. In addition to pH and temperature, ponds were monitored for dissolved oxygen and salinity over a 3-d period before sampling. Pond stocking success was based on the results of ichthyoplankton tows where less than 50 larvae/tow was considered failure and 50 or more larvae/tow was considered success. Ponds with a maximum pH of 9.4 and above had reduced survival (<50% stocking success). Survival increased with increasing water temperature. Elevated pH levels and low water temperatures in fertilized culture ponds can reduce survival of red drum larvae. Stock...
{"title":"Temperature and pH-Related Mortality of Red Drum Larvae in Fertilized Culture Ponds","authors":"Dale D. Lyon, M. Fisher","doi":"10.1577/1548-8640(1998)060<0227:TAPRMO>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0227:TAPRMO>2.0.CO;2","url":null,"abstract":"Abstract Survival of larval red drum Sciaenops ocellatus (36 h posthatch) stocked into fertilized culture ponds was monitored to determine the effects of temperature and pH. In 108 pond trials, larvae were stocked at pH values ranging from 8.5 to 10.8 and temperatures ranging from 19.8°C to 30.8°C. Fish were acclimated for 15–25 min before stocking. Culture ponds were stocked only when temperature, dissolved oxygen, and salinity were conducive to survival. In addition to pH and temperature, ponds were monitored for dissolved oxygen and salinity over a 3-d period before sampling. Pond stocking success was based on the results of ichthyoplankton tows where less than 50 larvae/tow was considered failure and 50 or more larvae/tow was considered success. Ponds with a maximum pH of 9.4 and above had reduced survival (<50% stocking success). Survival increased with increasing water temperature. Elevated pH levels and low water temperatures in fertilized culture ponds can reduce survival of red drum larvae. Stock...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"19 1","pages":"227-230"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74994484","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 : 1998-06-01DOI: 10.1577/1548-8640(1998)060<0192:EWTCAF>2.0.CO;2
R. Winfree, G. Kindschi, H. Shaw
Abstract We studied the effects of water temperature, density as measured by density index (DI), and food deprivation (alternating cycles of daily feeding and fasting) on dorsal fin erosion of steelhead Oncorhynchus mykiss through a factorial experiment lasting 22 weeks. Dorsal fin index (DFI) correlated inversely with age, length, and weight of fish and was significantly affected by crowding (i.e., DI). Increasing DI (from 0.0 to 0.5) also improved feed conversions and slightly depressed survival, but DI had no significant effects on weight gain, condition (K), or carcass composition. Water temperature (10°C or 15°C) had a strong and significant effect on DFI; colder water improved DFI while slowing body growth. Low temperature treatments improved survival slightly and altered carcass composition by increasing moisture at the expense of fat and protein. The effects of density and temperature were also strongly interactive. Food deprivation slightly improved final DFI at low DIs, but greatly reduced the a...
{"title":"Elevated Water Temperature, Crowding, and Food Deprivation Accelerate Fin Erosion in Juvenile Steelhead","authors":"R. Winfree, G. Kindschi, H. Shaw","doi":"10.1577/1548-8640(1998)060<0192:EWTCAF>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0192:EWTCAF>2.0.CO;2","url":null,"abstract":"Abstract We studied the effects of water temperature, density as measured by density index (DI), and food deprivation (alternating cycles of daily feeding and fasting) on dorsal fin erosion of steelhead Oncorhynchus mykiss through a factorial experiment lasting 22 weeks. Dorsal fin index (DFI) correlated inversely with age, length, and weight of fish and was significantly affected by crowding (i.e., DI). Increasing DI (from 0.0 to 0.5) also improved feed conversions and slightly depressed survival, but DI had no significant effects on weight gain, condition (K), or carcass composition. Water temperature (10°C or 15°C) had a strong and significant effect on DFI; colder water improved DFI while slowing body growth. Low temperature treatments improved survival slightly and altered carcass composition by increasing moisture at the expense of fat and protein. The effects of density and temperature were also strongly interactive. Food deprivation slightly improved final DFI at low DIs, but greatly reduced the a...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"105 1","pages":"192-199"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87993284","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 : 1998-06-01DOI: 10.1577/1548-8640(1998)060<0231:FAROSZ>2.0.CO;2
Y. Zhang, S. Stevens, Tiffany Wong
Abstract The growth of the settled zebra mussel Dreissena polymorpha was analyzed in a controlled flow-through system with fresh unicellular alga Selenastrum capricornutum as the food. Stocks of live algae from a light-regulated chemostat were diluted and metered continuously into rearing tanks that contained the mussels. Growth and migration of the mussels inside the tank were recorded over a 3-month period. Small mussels (1–3 mm) migrated frequently and had a high mortality rate (>99%). The mortality rate of the larger mussels (>12 mm) was lower (25%). Larger size mussels seldom migrated, but they did not increase in size during the entire 3-month period. Medium-size mussels (3–12 mm) exhibited strong photophobic behavior. Significant growth was observed in individuals that settled in dim places away from rapid water current. Results suggested that illumination should be examined as a potential detererent to the settling of this organism.
{"title":"Factors Affecting Rearing of Settled Zebra Mussels in a Controlled Flow-Through System","authors":"Y. Zhang, S. Stevens, Tiffany Wong","doi":"10.1577/1548-8640(1998)060<0231:FAROSZ>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0231:FAROSZ>2.0.CO;2","url":null,"abstract":"Abstract The growth of the settled zebra mussel Dreissena polymorpha was analyzed in a controlled flow-through system with fresh unicellular alga Selenastrum capricornutum as the food. Stocks of live algae from a light-regulated chemostat were diluted and metered continuously into rearing tanks that contained the mussels. Growth and migration of the mussels inside the tank were recorded over a 3-month period. Small mussels (1–3 mm) migrated frequently and had a high mortality rate (>99%). The mortality rate of the larger mussels (>12 mm) was lower (25%). Larger size mussels seldom migrated, but they did not increase in size during the entire 3-month period. Medium-size mussels (3–12 mm) exhibited strong photophobic behavior. Significant growth was observed in individuals that settled in dim places away from rapid water current. Results suggested that illumination should be examined as a potential detererent to the settling of this organism.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"33 10 1","pages":"231-235"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82769000","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 : 1998-06-01DOI: 10.1577/1548-8640(1998)060<0214:SOCCBC>2.0.CO;2
R. Dunham, B. Argue
Abstract Blue catfish Ictalurus furcatus were significantly easier to harvest by seining than channel catfish I. punctatus female channel catfish × male blue catfish F1 and F2 hybrids, channel catfish backcrosses, and blue catfish backcrosses (P < 0.05). The F1 hybrid was significantly easier to catch than channel catfish (P < 0.05). The F3 hybrid was significantly easier to catch than the F2 hybrid, channel catfish, and channel catfish backcrosses (P < 0.05). Individual epistatic recombination loss had a positive effect on percent fish caught in the first seine haul. Channel catfish additive genetic effects had a negative effect on ease of capture by seining. The more channel catfish genes present, the harder the fish was to catch.
{"title":"Seinability of Channel Catfish, Blue Catfish, and Their F1, F2, F3, and Backcross Hybrids in Earthen Ponds","authors":"R. Dunham, B. Argue","doi":"10.1577/1548-8640(1998)060<0214:SOCCBC>2.0.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1998)060<0214:SOCCBC>2.0.CO;2","url":null,"abstract":"Abstract Blue catfish Ictalurus furcatus were significantly easier to harvest by seining than channel catfish I. punctatus female channel catfish × male blue catfish F1 and F2 hybrids, channel catfish backcrosses, and blue catfish backcrosses (P < 0.05). The F1 hybrid was significantly easier to catch than channel catfish (P < 0.05). The F3 hybrid was significantly easier to catch than the F2 hybrid, channel catfish, and channel catfish backcrosses (P < 0.05). Individual epistatic recombination loss had a positive effect on percent fish caught in the first seine haul. Channel catfish additive genetic effects had a negative effect on ease of capture by seining. The more channel catfish genes present, the harder the fish was to catch.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"40 1","pages":"214-220"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79108620","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}
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