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Oxytetracycline Marking Efficacy for Yellow Perch Fingerlings and Temporal Assays of Tissue Residues 土霉素对黄鲈鱼种的标记效果及组织残留时间测定
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0280:OMEFYP>2.3.CO;2
Eric G. Unkenholz, Michael L. Brown, K. Pope
{"title":"Oxytetracycline Marking Efficacy for Yellow Perch Fingerlings and Temporal Assays of Tissue Residues","authors":"Eric G. Unkenholz, Michael L. Brown, K. Pope","doi":"10.1577/1548-8640(1997)059<0280:OMEFYP>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0280:OMEFYP>2.3.CO;2","url":null,"abstract":"Differentiating between hatchery and naturally reproduced fishes is difficult because of the lack of appropriate marking techniques. Chemical immersion techniques can be a practical method for mass marking juvenile fishes. The objectives of this study were to determine the concentration of oxytetracycli ne (OTC) hydrochloride needed to effectively mark age-0 yellow perch Perca flavescens. to observe the retention lime of the mark, and to measure the persistence of OTC in body tissues. Fish were immersed in 309, 534, and 748 mg OTC/L for 12 h. Initial fish collections were made weekly, and monthly collections began 1 month postmarking for tissue and mark analyses. High-pressure liquid chromatography was used to quantitate OTC residues in tissues; OTC concentrations were undetectable (<0.05 jxg/g) in the edible tissue (muscle) at 110 d postimmersion. Aided by a Nikon Labophot fluorescence microscope, we discerned otolith marks 56 d postimmersion on 100% of the fish treated at 534 and 748 mg/L. Marks were still visible on 100% of the fish treated with 534 and 748 mg/L at 8 months postimmersion.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"54 1","pages":"280-284"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88251740","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}
引用次数: 30
OUT-OF-SEASON SPAWNING OF SUNFISH LEPOMIS SPP. IN THE LABORATORY 实验室里太阳鱼的非季节产卵
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0297:OOSSOS>2.3.CO;2
C. Mischke, Joseph E. Morris
{"title":"OUT-OF-SEASON SPAWNING OF SUNFISH LEPOMIS SPP. IN THE LABORATORY","authors":"C. Mischke, Joseph E. Morris","doi":"10.1577/1548-8640(1997)059<0297:OOSSOS>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0297:OOSSOS>2.3.CO;2","url":null,"abstract":"Abstract Although propagation of sunfish Lepomis spp. has historically been done in earthen ponds, there is interest in producing these fish in the laboratory. The objective of this study was to spawn sunfish out of season by means of temperature and photoperiod manipulation. By manipulating temperature and photoperiod, we were able to spawn bluegills L. machrochirus over a 6-month period (December 1994–May 1995): 41 spawns. averaging 20.000 larvae each, were obtained from 24 females. By manipulation of photoperiod alone, we were able to spawn fish during a 3-month period (October–December 1995): 21 bluegill spawns of about 20.000 larvae each and 7 spawns of hybrid sunfish (female green sunfish L. cyanellus × male bluegills) of about 10,000 larvae each were obtained from 12 female bluegills and 24 female green sunfish, respectively. This protocol allows for production of sunfish larvae, regardless of season and without the use of hormones, for both laboratory studies and aquaculture stocking.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"64 1","pages":"297-302"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80893759","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}
引用次数: 30
Technical Notes: A Technique to Minimize the Adverse Effects Associated with Handling and Marking Salmonid Smolts 技术说明:一种技术，以尽量减少与处理和标记鲑鱼幼鱼有关的不利影响
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0307:TNATTM>2.3.CO;2
G. M. Matthews, N. Paasch, S. Achord, K. Mcintyre, J. R. Harmon
{"title":"Technical Notes: A Technique to Minimize the Adverse Effects Associated with Handling and Marking Salmonid Smolts","authors":"G. M. Matthews, N. Paasch, S. Achord, K. Mcintyre, J. R. Harmon","doi":"10.1577/1548-8640(1997)059<0307:TNATTM>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0307:TNATTM>2.3.CO;2","url":null,"abstract":"Abstract A system that allows anesthetization of juvenile salmonids before netting during a handling and marking operation is described. Our purpose for designing the system was to reduce or minimize any debilitating effects associated with these activities. When compared with smolts handled and marked in the traditional manner, use of the technique resulted in a significant reduction in the mortality of naturally migrating smolts of spring-summer chinook salmon Oncorhynchus tshawytscha during a posthandling and marking seawater challenge performance test. The treatment resulted in lower, but not significantly lower, plasma cortisol levels; however, sample sizes may have been too small for statistical verification. With a little ingenuity, the technique should be adaptable to most smolt handling or marking operations.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"25 1","pages":"307-309"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82014643","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}
引用次数: 5
Accuracy of Length Estimates for Chinook Salmon and Steelhead in Compartmented and Standard Hatchery Raceways 分隔和标准孵化场跑道中奇努克鲑鱼和钢头长度估计的准确性
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0285:AOLEFC>2.3.CO;2
M. Hayes, R. W. Carmichael, M. Keefe, T. A. Whitesel
{"title":"Accuracy of Length Estimates for Chinook Salmon and Steelhead in Compartmented and Standard Hatchery Raceways","authors":"M. Hayes, R. W. Carmichael, M. Keefe, T. A. Whitesel","doi":"10.1577/1548-8640(1997)059<0285:AOLEFC>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0285:AOLEFC>2.3.CO;2","url":null,"abstract":"Abstract We used three sampling methods to estimate mean fork lengths and variances for chinook salmon Oncorhynchus tshawytscha and steelhead O. mykiss that were reared in compartmented and standard raceways. Size segregation of fish in compartmented raceways was also evaluated. Accurate estimates of mean fork length from raceway populations of chinook salmon and steelhead were difficult to obtain. In both compartmented and standard raceways, our sampling methods tended to underestimate the mean. For compartmented raceways, the most accurate estimates of mean fork length were obtained by pooling samples collected from each compartment. In standard raceways, the most accurate estimates of mean fork length were obtained when one net sample was taken after fish were crowded in the raceway. We also found that accurate estimates of fork length variance were difficult to obtain. No sampling method produced accurate estimates more than 67% of the time; therefore, no sampling method was recommended for estimating...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"28 1","pages":"285-292"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84169014","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}
引用次数: 0
Aging Processes of Rainbow Trout Semen during Storage 虹鳟精液贮藏过程中的老化过程
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0272:APORTS>2.3.CO;2
F. Lahnsteiner, T. Weismann, R. Patzner
{"title":"Aging Processes of Rainbow Trout Semen during Storage","authors":"F. Lahnsteiner, T. Weismann, R. Patzner","doi":"10.1577/1548-8640(1997)059<0272:APORTS>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0272:APORTS>2.3.CO;2","url":null,"abstract":"Abstract Changes in fertility, motility, sperm metabolism, and seminal plasma composition during 2-h in vitro storage on ice (2 mL semen in a 10-mL centrifuge tube with a diameter of 1 cm) were investigated for semen from rainbow trout Oncorhynchus mykiss. After 2 h, the fertilization capacity was reduced by about 35%, motility rate by 65%, and swimming velocity by 26% in comparison with freshly collected semen. The seminal fluid osmolality and sodium and potassium concentrations decreased, while the spermatozoan sodium and potassium levels increased, indicating ion influx into the cells. The increase in glycerol, fatty acid, and triglyceride levels of the seminal fluid and of the spermatozoa indicated aging of semen. Spermatozoan adenylate kinase, malate dehydrogenase, and respiratory activities, and thus energy requirements of semen, were high after 2-h semen storage compared with fresh semen. Spermatozoa used glucose for energy supply as its levels decreased. Adenosine triphosphate, NADH, and lactate l...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"242 1","pages":"272-279"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76979471","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}
引用次数: 57
Use of Formalin during Incubation of Eyed Eggs of Inland Fall Chinook Salmon 福尔马林在内陆秋季奇努克鲑鱼眼卵孵化中的应用
The Progressive Fish-culturist Pub Date : 1997-10-01 DOI: 10.1577/1548-8640(1997)059<0303:UOFDIO>2.3.CO;2
M. E. Barnes, Rick J. Cordes, W. A. Sayler
{"title":"Use of Formalin during Incubation of Eyed Eggs of Inland Fall Chinook Salmon","authors":"M. E. Barnes, Rick J. Cordes, W. A. Sayler","doi":"10.1577/1548-8640(1997)059<0303:UOFDIO>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0303:UOFDIO>2.3.CO;2","url":null,"abstract":"Abstract The influence of daily formalin treatments on eyed egg and fry mortality was evaluated during the incubation of eyed eggs of inland fall chinook salmon Oncorhynchus tshawytscha. A 3–5% increase in survival was observed in trays of eggs treated with formalin at 1,667 mg/L for 15 min daily from egg eye-up until just before hatch compared with incubation trays from which dead eggs were manually removed to control Saprolegnia. Egg survival in trays receiving both daily formalin treatments and manual egg removal did not differ significantly from those trays receiving only formalin treatments. Significant reductions in mortality were observed prehatch when formalin was used, and there was no difference in mortality from hatch to fry swim-up. Both formalin treatments and the hand-picking of dead eggs adequately controlled visible fungal development from egg eye-up to hatching.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"94 1","pages":"303-306"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83564560","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}
引用次数: 33
Comparative Gear Selectivity for Male Walleyes and Influence of Method of Capture on Resultant Hatching Success 雄性斑眼鱼的比较渔具选择性及其捕获方法对孵化成功率的影响
The Progressive Fish-culturist Pub Date : 1997-07-01 DOI: 10.1577/1548-8640(1997)059<0218:CGSFMW>2.3.CO;2
K. Koupal, J. Satterfield, S. Flickinger
{"title":"Comparative Gear Selectivity for Male Walleyes and Influence of Method of Capture on Resultant Hatching Success","authors":"K. Koupal, J. Satterfield, S. Flickinger","doi":"10.1577/1548-8640(1997)059<0218:CGSFMW>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0218:CGSFMW>2.3.CO;2","url":null,"abstract":"Abstract Spawn-taking efforts for walleyes Stizostedion vitreum in Colorado were used to evaluate gear selectivity in terms of catch per unit effort (CPUE) and sex ratio. Seasonal electrofishing CPUE ranged from 28 to 197 walleyes/h, whereas gillnetting CPUE ranged between 0.5 and 3.0 walleyes/net-night. Corresponding sex ratios (male: female) for these gears ranged between 9.5 and 48.3 for electrofishing and 0.3 and 0.5 for gillnetting. Weighted percent hatching success was also determined for eggs fertilized with milt from electrofished males versus gillnetted males to determine if electrofishing harmed male gametes. The weighted percent hatch for electrofishing was 69.1%, compared with 76.9% for gillnetting (P = 0.357). These results suggest that electrofishing may be used to enhance numbers of male broodstock during spawn-taking operations. Electrofishing is an efficient means of capturing male broodstock during spawning season, and the resultant hatching percentage of eggs fertilized with these males...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"29 1","pages":"218-221"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88262728","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}
引用次数: 6
Low-Cost Computer-Assisted Image Analysis for Fisheries Research 渔业研究的低成本计算机辅助图像分析
The Progressive Fish-culturist Pub Date : 1997-07-01 DOI: 10.1577/1548-8640(1997)059<0235:LCCAIA>2.3.CO;2
Mark C. Bates, T. Tiersch
{"title":"Low-Cost Computer-Assisted Image Analysis for Fisheries Research","authors":"Mark C. Bates, T. Tiersch","doi":"10.1577/1548-8640(1997)059<0235:LCCAIA>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0235:LCCAIA>2.3.CO;2","url":null,"abstract":"Abstract An image analysis system based on the Macintosh personal computer and public domain software (NIH Image, version 1.57) allows capture of digitized images for data analysis. Three techniques for image capture and aquisition of linear and area measurements from digitized images were tested: (1) estimation of egg size, (2) estimation of number of eggs or fry, and (3) measurement of fish length. For estimation of egg size, egg samples were taken by catheterization from two female channel catfish Ictalurus punclatus. Egg diameters measured manually (1,82 ± 0.27 and 2.59 ± 0.19 mm) were not significantly different (P = 0.08 and 0.20) from the diameters estimated with image analysis (1.92 ± 0.21 and 2.63 ± 0.17 mm). For egg counting, channel catfish eggs were hand-stripped into Hanks' balanced salt solution and divided into seven 15-mL aliquots. The number of eggs was determined manually and images were captured for analysis. The number of eggs determined manually (436 ± 41) was not significantly differ...","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"36 1","pages":"235-240"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91303804","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}
引用次数: 6
Growth, Mortality, and Mark Retention of Hatchery Brook Trout Marked with Visible Implant Tags, Jaw Tags, and Adipose Fin Clips 用可见的植入标签、下颌标签和脂肪鳍夹标记的孵化场鳟鱼的生长、死亡率和标记保留
The Progressive Fish-culturist Pub Date : 1997-07-01 DOI: 10.1577/1548-8640(1997)059<0241:GMAMRO>2.3.CO;2
Adam Zerrenner, D. Josephson, C. Krueger
{"title":"Growth, Mortality, and Mark Retention of Hatchery Brook Trout Marked with Visible Implant Tags, Jaw Tags, and Adipose Fin Clips","authors":"Adam Zerrenner, D. Josephson, C. Krueger","doi":"10.1577/1548-8640(1997)059<0241:GMAMRO>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1997)059<0241:GMAMRO>2.3.CO;2","url":null,"abstract":"Abstract Growth, mortality, mark retention, and mark readability were compared among control and treatment groups of 197–265-mm hatchery brook trout Salvelinus fonitinalis marked with visible implant (VI) tags, adipose tin (AD) clips, or stainless steel circularstrap jaw tags. Based on growth rates calculated for individual fish after 90 d, brook trout marked with VI tags grew faster than those with jaw tags (P G 0.03). Mortality was higher after 251 d for jaw-tagged fish (45%) than the cumulative mortality (8.3%) observed among VI-tagged, AD clipped, and control fish, Mark retention was 759c for VI tags, 99% for jaw tags, and 100% for AD clips, Visible implant tag loss was greatest within 7 d after insertion. After 251 d. 37% of the VI tags were unreadable. but 92% of the “unreadable” tags were readable if magnification and light were used. Unreadability could limit the usefulness of VI tags in multiyear studies unless problem tags can be removed from the fish to read tag codes.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"12 1","pages":"241-245"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75548129","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}
引用次数: 29
Technical Notes: Acquisition of Broodstock of Totoaba macdonaldi: Field Handling, Decompression, and Prophylaxis of an Endangered Species 技术说明:麦克唐纳湾石首鱼的获得:一种濒危物种的现场处理、减压和预防
The Progressive Fish-culturist Pub Date : 1997-07-01 DOI: 10.1577/1548-8640(1497)059<0246:TNAOBO>2.3.CO;2
C. True, Anthony Loera, Norberto Castro Castro
{"title":"Technical Notes: Acquisition of Broodstock of Totoaba macdonaldi: Field Handling, Decompression, and Prophylaxis of an Endangered Species","authors":"C. True, Anthony Loera, Norberto Castro Castro","doi":"10.1577/1548-8640(1497)059<0246:TNAOBO>2.3.CO;2","DOIUrl":"https://doi.org/10.1577/1548-8640(1497)059<0246:TNAOBO>2.3.CO;2","url":null,"abstract":"Abstract Totoaba Totoaba macdonaldi is the largest member in the family Sciaenidae and is considered endangered. Broodstock were collected at depths of 20–50 m in the northern Sea of Cortez, and fish suffered from severe decompression problems when brought to the surface. A field decompression technique was developed to alleviate these problems. Pertinent field handling and prophylactic measures were applied to successfully transport and acclimate the broodfish to the facilities at the Faculty of Marine Science in Ensenada, Mexico. Totoaba adapted to an enclosed environment within 30–40 d after capture. Ten broodfish, constituting the largest captive Totoaba population, are awaiting the appropriate conditions for gonad maturation and spawning.","PeriodicalId":22850,"journal":{"name":"The Progressive Fish-culturist","volume":"38 1","pages":"246-248"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75810517","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}
引用次数: 27
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