Effect of Intermittent Traveling Water Screen Operation on Fish Survival

2021 ◽  
Author(s):  
Jenna Rackovan ◽  
Joe Zottoli ◽  
Stephen V. Amaral ◽  
Jonathan Black ◽  
Brian McMahon
Keyword(s):  
Fish Survival

scholarly journals Erratum to: Effects of Hypoxia on Fish Survival and Oyster Growth in a Highly Eutrophic Estuary

2017 ◽  
Vol 41 (1) ◽  
pp. 299-299 ◽  
Author(s):  
Rikke Jeppesen ◽  
Miguel Rodriguez ◽  
Jenna Rinde ◽  
John Haskins ◽  
Brent Hughes ◽  
...  
Keyword(s):  
Fish Survival

scholarly journals Transportation of juvenile tambaqui (Colossoma macropomum) in a closed system

2006 ◽  
Vol 66 (2a) ◽  
pp. 493-502 ◽  
Author(s):  
L. C. Gomes ◽  
C. A. R. M. Araujo-Lima ◽  
A. R. Chippari-Gomes ◽  
R. Roubach
Keyword(s):  
Linear Models ◽  
Condition Factor ◽  
Carbon Dioxide Concentration ◽  
General Linear Model ◽  
Quality Parameters ◽  
Colossoma Macropomum ◽  
Time Period ◽  
Plastic Bag ◽  
Closed Systems ◽  
Fish Survival

The objective of this study was to investigate the effect of density, duration and the use of additives to the water during the transportation of juvenile tambaqui (Colossoma macropomum) and use of this data to establish a safe transportation protocol for the species. The tested products and dosages were: salt (1000, 2000 and 3000 mg/L), gypsum (100, 300 and 500 mg/L) and benzocaine (10, 20 and 30 mg/L). Fish were transported in closed systems (plastic bag) at different densities and time periods of up to 24 h. Fish survival (FS) and water quality parameters were monitored immediately after transportation. The remaining fish were kept in floating cages in order to evaluate mortality which occurred up to 96 h after transportation (S96). The best fish density, additives dosages and time period of the transportation was estimated with a general linear model. The effect of the condition factor on FS and S96 was also evaluated. As expected, FS and S96 were significantly related to time and density. FS but not S96, were also were significantly related to treatment. FS with gypsum treatment was not different from controls and FS with table salt and benzocaine treatments were significantly reduced. The condition factor was not related to either FS or S96. FS was inversely correlated with carbon dioxide concentration. It was concluded that the additives did not improve fish transportation survival. Linear models were developed to predict the best transportation densities as a function of time.

Effect of forecast skill on management of the Oregon coast coho salmon (Oncorhynchus kisutch) fishery

2012 ◽  
Vol 69 (6) ◽  
pp. 1016-1032 ◽  
Author(s):  
David E. Rupp ◽  
Thomas C. Wainwright ◽  
Peter W. Lawson
Keyword(s):  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Status Quo ◽  
Forecast Skill ◽  
Oregon Coast ◽  
Performance Metric ◽  
Specific Performance ◽  
The Status ◽  
Target Performance ◽  
Fish Survival

Better fisheries management is often given as one justification for research on improving forecasts of fish survival. However, the value gained from expected improvements in forecast skill in terms of achieving management goals is rarely quantified as part of research objectives. Using Monte Carlo simulations of population dynamics, we assessed the effect of forecast skill under two strategies for managing Oregon coast natural (OCN) coho salmon ( Oncorhynchus kisutch ). The first, or status quo, strategy is currently being used to rebuild threatened OCN coho populations. This strategy determines harvest based on both a forecasted marine survival rate and parental spawner abundance. The second strategy relies on a forecast of preharvest adult abundance to achieve a constant spawner escapement target. Performance of the status quo strategy was largely insensitive to forecast skill, while the second strategy showed sensitivity that varied with escapement target and specific performance metric. The results imply that effort towards improving forecasts is not justifiable solely on the basis of improved management under the status quo strategy, though it may be were the management strategy altered.

Factors driving temporospatial heterogeneity of fish community health in Jinan City, China

2019 ◽  
Vol 70 (5) ◽  
pp. 637 ◽  
Author(s):  
C. S. Zhao ◽  
Y. Yang ◽  
S. Yang ◽  
Y. Gai ◽  
C. Zhang ◽  
...  
Keyword(s):  
Water Quality ◽  
Fish Community ◽  
Oxygen Demand ◽  
Physical Factor ◽  
Field Trips ◽  
Driving Factors ◽  
Chemical Factor ◽  
River Health ◽  
Jinan City ◽  
Fish Survival

Jinan City is the first pilot city for the construction of a hydroecological civilisation in China. Fifty-eight representative river sampling stations were selected through field trips and surveys, and fish were sampled in the spring, summer, and autumn of 2015. An index of fish biological integrity in Jinan City was constructed and to evaluate the hydroecological health of rivers. Canonical correlation analysis was used to select key driving factors that affect the health of the fish community. The results show that the key physical factor affecting water quality was turbidity, the key chemical factor affecting water quality was chemical oxygen demand (COD) and the key hydrological factor affecting water quality was discharge. Of all the driving factors, COD had the greatest effect on the health of the fish community, followed by discharge and turbidity. Macropodus chinensis Bloch was sensitive to changes in COD; Saurogobio dumerili Bleeker and Pseudolaubuca engraulis Nichols were sensitive to the hydrological factors of discharge and flow velocity; and Saurogobio gymnocheilus Lo and Squaliobarbus ourriculus Richardson were sensitive only to discharge. COD and discharge had a strong effect on fish survival, whereas turbidity affected fish survival but was not a major factor affecting the spatial distribution of river health. The findings can provide a reference for aquatic ecological rehabilitation in developing countries.

scholarly journals Swim Bladder Disorders in Koi Carp (Cyprinus carpio)

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1974
Author(s):  
Rubina Sirri ◽  
Luciana Mandrioli ◽  
Samuele Zamparo ◽  
Francesca Errani ◽  
Enrico Volpe ◽  
...  
Keyword(s):  
Medical Intervention ◽  
Clinical Approach ◽  
Swim Bladder ◽  
Pharmacological Management ◽  
Koi Carp ◽  
Antimicrobial Susceptibility Pattern ◽  
Bladder Disorders ◽  
Fish Survival ◽  
Gross Examination

Swim bladder disorders and consequent buoyancy problems are encountered in ornamental fish, including koi carp. Nevertheless, beyond clinical and pharmacological management, they are largely underdiagnosed. In this study, nine koi carp showing abdominal swelling and abnormal swimming behavior were investigated. Clinical approach, varying from case to case, included ultrasonographic and X-ray investigations, bacteriological analysis of the collected fluid, antimicrobial susceptibility pattern, and possibly histological analysis. Diagnostic imaging, corroborating gross examination, documented swim bladder deformation/dislocation and serous fluid within the swim bladder chambers of most animals. Bacteria belonging to the Aeromonas hydrophila/caviae group and Shewanella xiamenensis were identified. S. xiamenensis strains showed a sensibility to all tested molecules except for one strain, which was resistant to tetracycline and cyprofloxacin. Antibiotic treatment succeeded in the full recovery of three cases in which S. xiamemensis infection was detected. Chronic aerocystitis was histologically documented where tissue was available. The swim bladder histopathological findings highlighted a chronic process that had compromised the quality of life of the animals. A multidisciplinary clinical–pathological and microbiological approach is highly suggested to recognize swim bladder conditions as early as possible, aiming to drive medical intervention and raising the chances of fish survival.

Dependency of larval fish survival on retention/dispersion in food limited environments: the Baltic Sea as a case study

2003 ◽  
Vol 12 (4-5) ◽  
pp. 425-433 ◽  
Author(s):  
H.-H. Hinrichsen ◽  
A. Lehmann ◽  
C. Möllmann ◽  
J.O. Schmidt
Keyword(s):  
Baltic Sea ◽  
Larval Fish ◽  
The Baltic Sea ◽  
The Baltic ◽  
Fish Survival

Advances in Turbine Development for Fish Survival

1999 ◽  
Author(s):  
Raymond O. Ellis ◽  
Stuart L. Hammond ◽  
Richard K. Fisher, Jr. ◽  
Gary F. Franke ◽  
C. Justin Hall
Keyword(s):  
Fish Survival

The plankton of Shelikof Strait, Alaska: standing stock, production, mesoscale variability and their relevance to larval fish survival

1996 ◽  
Vol 5 (s1) ◽  
pp. 19-38 ◽  
Author(s):  
JEFFREY. M. NAPP ◽  
LEWIS S. INCZE ◽  
PETER B. ORTNER ◽  
DEBORAH L. W. SIEFERT ◽  
LISA BRITT
Keyword(s):  
Larval Fish ◽  
Standing Stock ◽  
Mesoscale Variability ◽  
Fish Survival

Water quality fluctuations under floating net cages for fish culture in Lake Cirata and its impact on fish survival

2005 ◽  
Vol 71 (5) ◽  
pp. 972-977 ◽  
Author(s):  
Irzal EFFENDIE ◽  
Kukuh NIRMALA ◽  
Umar HASAN SAPUTRA ◽  
Agus Oman SUDRAJAT ◽  
Muhammad ZAIRIN ◽  
...  
Keyword(s):  
Water Quality ◽  
Fish Culture ◽  
Net Cages ◽  
Fish Survival
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