Výsledky vyhledávání - "H. L. Bergman"

Air breathing in Magadi tilapia Alcolapia grahami, under normoxic and hyperoxic conditions, and the association with sunlight and reactive oxygen species

Autor: O E, Johannsson, H L, Bergman, C M, Wood, P, Laurent, D G, Kavembe, A, Bianchini, J N, Maina, C, Chevalier, L F, Bianchini, M B, Papah, R O, Ojoo

Publikováno v: Journal of fish biology. 84(3)

Observations of the Magadi tilapia Alcolapia grahami in hot, highly alkaline Lake Magadi revealed that they air breathe not only during hypoxia, as described previously, but also during normoxia and hyperoxia. Air breathing under these latter conditi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::076ebafc6b7a7fe82c8ee9349c3e6c4c
https://pubmed.ncbi.nlm.nih.gov/24673646

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Effects of Ammonia on Survival, Swimming and Activities of Enzymes of Nitrogen Metabolism in the Lake Magadi Tilapia Oreochromis Alcalicus Grahami

Autor: David J. Randall, Patricia A. Wright, Annie Narahara, Pierre Laurent, Chris M. Wood, Patrick J. Walsh, H. L. Bergman, John N. Maina

Publikováno v: Journal of Experimental Biology. 180:323-327

The Lake Magadi tilapia, Oreochromis alcalicus grahami, is remarkable among teleosts in that it flourishes under extremely well-buffered alkaline water conditions (pH10, 180mmol l−1) at temperatures of 30–40°C (Wood et al. 1989). As expected fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64144beeb51289ba735d766f32e3a97e
https://doi.org/10.1242/jeb.180.1.323

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Nature and Time Course of Acclimation to Aluminum in Juvenile Brook Trout (Salvelinus fontinalis). I. Physiology

Autor: D. G. McDonald, C. M. Wood, R. G. Rhem, M. E. Mueller, D. R. Mount, H. L. Bergman

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 48:2006-2015

Chronic exposure (up to 42 d) of juvenile brook trout (Salvelinus fontinalis) to sublethal aluminum at pH 5.2 resulted in a damage/repair acclimation phenomenon. The damage developed rapidly (within 24 h), was centered at the gills, and was character

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::195367dcf02319c9cf56ec219bb89f46
https://doi.org/10.1139/f91-239

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Effects of Long-Term Preexposure to Sublethal Concentrations of Acid and Aluminum on the Ventilatory Response to Aluminum Challenge in Brook Trout (Salvelinus fontinalis)

Autor: H. L. Bergman, Chris M. Wood, R. L. Walker

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 48:1989-1995

Adult brook trout (Salvelinus fontinalis; 200–300 g) were preexposed for 10 wk to 75 μg Al3+∙L−1, pH = 5.2, in soft water (25 μequiv Ca2+∙L−1) and controls to the same conditions without Al3+. When challenged with a lethal dose of Al3+(33

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44ed3a1d7c7b54f8bba41ec32249afd1
https://doi.org/10.1139/f91-237

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Shortening of Branchial Tight Junction Acid-Exposed Rainbow Trout (Oncorhynchus mykiss)

Autor: D. A. Sanchez, H. L. Bergman, J. Freda

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 48:2028-2033

The objective of this study was to investigate possible sites for Na+loss in fish exposed to low environmental pH. In rainbow trout (Oncorhynchus mykiss) exposed to pH 4.0 for 1 h, a net loss of Na+was stimulated, and changes in gill structure occurr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a8cc750d208b9cb0e157046c010fb79
https://doi.org/10.1139/f91-241

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Effects of Water Acidity, Calcium, and Aluminum on Whole Body Ions of Brook Trout (Salvelinus fontinalis) Continuously Exposed from Fertilization to Swim-Up: A Study by Instrumental Neutron Activation Analysis

Autor: Chris M. Wood, C. G. Ingersoll, David R. Mount, S. Landsberger, D. G. McDonald, H. L. Bergman, Ora E. Johannsson

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 47:1593-1603

Water Ca, rather than pH or Al, was the most important factor affecting whole body electrolyte levels in fry exposed from fertilization to swim-up (91 d) to 84 combinations of pH (6.5, 5.2, 4.8, 4.4, 4.0), Ca (0.5, 1, 2, 8 mg/L), and Al (0, 12, 37, 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95929bc9dd43860a8954caad04719017
https://doi.org/10.1139/f90-181

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Aluminum and Acid Toxicity to Two Strains of Brook Trout (Salvelinus fontinalis)

Autor: H. L. Bergman, C. G. Ingersoll, D. D. Gulley, J. D. Fernandez, J. R. Hockett, M. E. Mueller, David R. Mount

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 47:1641-1648

Two strains of 1 yr-old brook trout were exposed to 14 combinations of pH, aluminum, and calcium during a 28-d experiment. Survival, weight, and gill histology of both strains were affected similarly by pH, aluminum, and calcium exposure. Survival wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::964afcdb2f7910acdfd3eed79f5cbb58
https://doi.org/10.1139/f90-186

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Whole Body Ions of Brook Trout (Salvelinus fontinalis) Alevins: Responses of Yolk-Sac and Swim-Up Stages to Water Acidity, Calcium, and Aluminum, and Recovery Effects

Autor: S. Landsberger, D. G. McDonald, H. L. Bergman, Ora E. Johannsson, Chris M. Wood, David R. Mount, C. G. Ingersoll

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 47:1604-1615

Water pH, rather than Ca or Al, was the most important factor affecting whole body ions in yolk-sac or swim-up fry exposed to a matrix of pH (6.5–4.0), Ca (0.5–8 mg/L), and Al (0–1000 μg/L). Fry were raised from fertilization (day 0) in flowin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8a2b098333b3a75a5c46fc9ee6cba77
https://doi.org/10.1139/f90-182

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