Soft-Egg Disease in Landlocked Fall Chinook Salmon Eggs: Possible Causes and Therapeutic Treatments

Barnes, Michael E.; Cordes, Rick J.; Sayler, William A.; Hanten, Robert P.

doi:10.1577/1548-8454(2003)65<126:sdilfc>2.0.co;2

Cited by 18 publications

(19 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The greater tag returns per tank from the high-density tanks in the 2003 and 2004 stocking years indicate that in absolute terms, the total number of Chinook Salmon surviving after stocking could be enhanced by rearing at higher densities. However, this would likely only occur during years of favorable environmental conditions and only if the numbers of eggs and subsequent fry are not limited-unlike the typical situation for Lake Oahe Chinook Salmon (Barnes et al 2003;Wipf and Barnes 2012). In addition, to maximize poststocking returns at high densities, water flow to the rearing tanks cannot be limited and increased expenditures on fish food would likely be necessary.…”

Section: Discussionmentioning

confidence: 99%

Decreased Hatchery Rearing Density Improves Poststocking Harvest and Return to Spawning of Landlocked Fall Chinook Salmon

et al. 2013

Self Cite

View full text Add to dashboard Cite

Juvenile landlocked fall Chinook Salmon Oncorhynchus tshawytscha were coded‐wire‐tagged and reared in 1.8‐m‐diameter circular tanks at a low or high density for up to 52 d prior to stocking in Lake Oahe, South Dakota, during late May of 1999, 2003, and 2004. Final hatchery rearing densities ranged from 7.29 to 11.72 kg/m3 for the low‐density tanks and from 15.02 to 25.22 kg/m3 for the high‐density tanks, with the higher densities being at least double the lower densities in each year. Flows were adjusted to maintain similar loadings (kg·L−1·min−1) between the treatments each year. The fish used in this study came from spawns collected during the October prior to stocking; TL at the end of hatchery rearing ranged from 103 mm in 1999 to 124 mm in 2004. In each year‐class, the percentage of fish that were harvested by anglers or that returned to spawn was significantly greater for the lower‐density treatment than for the higher‐density treatment. Angler harvest primarily consisted of age‐3 fish, with a small number of age‐4 fish harvested as well. Feed conversion ratios were significantly improved in the lower‐density tanks relative to the higher‐density tanks in 1999 and 2003, and fish from the lower‐density tanks were also significantly longer just prior to stocking in 1999 and heavier prior to stocking in 2003. To maximize poststocking survival for landlocked fall Chinook Salmon, lower rearing densities are recommended.

show abstract

Section: Discussionmentioning

confidence: 99%

Decreased Hatchery Rearing Density Improves Poststocking Harvest and Return to Spawning of Landlocked Fall Chinook Salmon

et al. 2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Open Fish Science Journal, 2014, Volume 7 31 radically with landlocked fall Chinook salmon eggs incubated at McNenny [18] and has been observed in other salmonid hatcheries as well [19,20]. Barnes et al [18] indicated that formalin treatments provided some remediation against the lethal effects of soft-egg disease.…”

Section: Landlocked Fall Chinook Salmon Egg Survivalmentioning

confidence: 94%

“…Barnes et al [18] indicated that formalin treatments provided some remediation against the lethal effects of soft-egg disease. In 2012, approximately 10% of the eyed eggs died from eye-up to hatch in both the jars and trays that received daily formalin treatments.…”

Section: Landlocked Fall Chinook Salmon Egg Survivalmentioning

confidence: 99%

See 1 more Smart Citation

Landlocked Fall Chinook Salmon Egg Survival during Jar and Tray Incubation at a Production Hatchery

Wipf¹,

Barnes²,

Nero³

et al. 2014

TOFISHSJ

Self Cite

View full text Add to dashboard Cite

Abstract:This study compared the survival of landlocked fall Chinook salmon Oncorhynchus tshawytscha eggs incubated in either upwelling jars, either with or without daily formalin treatments, or vertically-stacked trays treated daily with formalin in a production hatchery. In the first year of the study, survival to the eyed-egg stage was significantly greater in eggs incubated in jars without formalin compared to trays, but there was no significant difference in survival to hatch between the treatments. In the second year, there were no significant differences in eggs incubated in trays, in jars without formalin treatments, and in jars with formalin treatments. In the final year, there was no significant difference in eyed-egg survival between eggs incubated in trays and jars without formalin, but survival to hatch was significantly greater in the eggs incubated in jars. Jar incubation is recommended to maximize the survival of landlocked fall Chinook salmon eggs.

show abstract

“…Some studies evaluated different iodine disinfection protocols in combination with regular treatments with formalin as an antifungal agent (Barnes et al . ; Chalupnicki et al . ; Pravecek & Barnes, ).…”

Section: Evaluation Criteria For a Successful Disinfectionmentioning

confidence: 99%

Disinfection of teleost eggs: a review

Swaef

Broeck

Dierckens

et al. 2015

Reviews in Aquaculture

View full text Add to dashboard Cite

In aquaculture hatcheries, egg disinfection is commonly employed as a mortality mitigation and disease management tool. In addition, disinfection protocols are utilized in research facilities, as a means to create axenic and gnotobiotic larval models. For the latter, a complete sterilization of the eggs is warranted. Multiple research groups have tested various disinfectants in fish eggs adopting different protocols and a range of parameters to evaluate their efficacy and safety. However, there is a clear lack of a critical review listing these different studies and stressing the advantages and shortcomings of the protocols and adopted disinfectants. This review provides a commented survey of the findings/experiments on the most frequently used and upcoming disinfecting products, the protocols in which they are included and their purposes with emphasis on decreasing bacterial and/or fungal load, underscoring the benefits and the limitations of each product. Supplemented with a critical note, this review assists both aquaculturists and researchers in making an informed choice. Moreover, it will help stakeholders to identify the gaps in knowledge where future research on egg disinfection is needed.

show abstract

Soft-Egg Disease in Landlocked Fall Chinook Salmon Eggs: Possible Causes and Therapeutic Treatments

Cited by 18 publications

References 42 publications

Decreased Hatchery Rearing Density Improves Poststocking Harvest and Return to Spawning of Landlocked Fall Chinook Salmon

Decreased Hatchery Rearing Density Improves Poststocking Harvest and Return to Spawning of Landlocked Fall Chinook Salmon

Landlocked Fall Chinook Salmon Egg Survival during Jar and Tray Incubation at a Production Hatchery

Disinfection of teleost eggs: a review

Contact Info

Product

Resources

About