GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Fish mortality due to acute ammonia exposure (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 18 (1987), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Fish mortality in the River Umia, near Villagarcia de Arosa, Pontevedra, Spain, which occurred after a discharge from a food sewage works, is studied. Physico-chemical parameters of water samples from sewage and from the River Umia were studied and concentrations of ammonia sufficiently high to cause toxic effects in fish (702 mg/1 and 302 mg/1 as total ammonia) were found. The toxicity of two concentrations of ammonia was investigated on goldfish, Carassius auratus (L.), using water quality values the same as found in the River Umia, to obtain the same concentrations of un-ionized ammonia (2·13 mg/1 and 0·91 mg/1). Fish exposed to high concentrations died within 24 h and three of six, which were exposed to the lowest concentration died within 96h. All fish at first showed symptoms of hyper excitability and hyperventilation, and at times of rest showed a decrease in respiration. Post-mortem findings generally included gill congestion and haemorrhage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1987.tb00135.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Acute toxicity of sulfide and lower ph in cultured rainbow trout, Atlantic salmon, and coho salmon (1993)
    Springer
    Bulletin of environmental contamination and toxicology 50 (1993), S. 164-170 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196556
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of body size on the intraspecific tolerance of aquatic insects to low pH: A laboratory study (1995)
    Springer
    Bulletin of environmental contamination and toxicology 54 (1995), S. 403-408 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00195112
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Estimating Safe Concentrations of Fluoride for Three Species of Nearctic Freshwater Invertebrates: Multifactor Probit Analysis (1996)
    Springer
    Bulletin of environmental contamination and toxicology 56 (1996), S. 643 -648 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900094
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Age Specific Sensitivity of the Nematode Aphelenchus avenae to Mercury Toxicity (1998)
    Springer
    Bulletin of environmental contamination and toxicology 61 (1998), S. 149-153 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00002972
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Differential sensitivity of Dugesia dorotocephala and Cheumatopsyche pettiti to water acidification: Ecological implication for predator-prey interactions (1992)
    Springer
    Archives of environmental contamination and toxicology 23 (1992), S. 59-63 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The initial hypothesis that predation pressure should decrease with decreasing pH in aquatic macrobenthic communities if predatory invertebrates are more sensitive to water acidification than prey invertebrates is tested. Short-term toxicity bioassays were conducted in soft water (average value of total hardness 38.0 mg CaCO3/L) to determine the differential sensitivity of the predator, Dugesia dorotocephala (Turbellaria, Tricladida), and the prey, larvae of Cheumatopsyche pettiti (Insecta, Trichoptera), to low pH. Test pH solutions were prepared with sulfuric acid (H2SO4). Test species were also exposed to high concentrations of sulfate ion (95 mg SO4=/L for D. dorotocephala and 340 mg SO4=/L for C. pettiti) as sulfate toxicity controls, using potassium sulfate (K2SO4). No mortality was observed during these toxicity controls, indicating that toxic effects generated by low pH were fundamentally due to H+ ions. The 72 and 96-h LC50s (as pH values) and their 95% confidence limits were 4.88 (4.72–5.05) and 5.04 (4.89–5.21) for D. dorotocephala, and 3.25 (3.00–3.51) and 3.48 (3.24–3.73) for C. pettiti. Net-spinning caddisfly larvae migrated from their retreat nets and protruded their anal papillae before dying. After short-term bioassays, predation-pressure laboratory experiments were performed for 6 days. The cumulative mortality of C. pettiti by predation of D. dorotocephala decreased with decreasing sublethal pH values. The average predation rates at mean pH values of 7.7, 7.7, 6.6, 6.5, 6.2 and 6.0 were 2.5, 2.0, 1.33, 1.17, 0.67 and 0.33 larvae/day, respectively. The major biotic factor affecting predation pressure appears to be the reduction in the physiological activity of triclads at low pH. It is concluded that predation pressure can decrease in aquatic macrobenthic communities if prey are more tolerant to water acidification than predators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225996
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Fluoride toxicity to aquatic life: A proposal of safe concentrations for five species of palearctic freshwater invertebrates (1995)
    Springer
    Archives of environmental contamination and toxicology 29 (1995), S. 159-163 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Safe concentrations (SCs) and EC50s of fluoride ion (F-) for five species of aquatic insect larvae, Chimarra marginata, Hydropsyche bulbifera, H. exocellata, H. lobata, and H. pellucidula, are estimated from short-term toxicity bioassays using the multifactor probit analysis (MPA) software on sublethal data. The sublethal effect is defined as ‘net larva migration.’ The 24, 48, 72, and 96-h EC50s (mg F-/L) were 178.06, 63.90, 45.41, and 38.28 for C. marginata; 90.06, 36.20, 26.71, and 22.95 for H. bulbifera; 122.64, 42.45, 29.80, and 24.97 for H. exocellata; 238.50, 76.22, 52.12, and 43.09 for H. lobata; and 185.05, 53.74, 35.58, and 28.96 for H. pellucidula. SC values (or 8760-h EC0.01s) were 1.79 for C. marginata, 0.73 for H. bulbifera, 0.56 for H. exocellata, 1.18 for H. lobata, and 0.39 for H. pellucidula. Thus, C. marginata and H. lobata appears to be less sensitive species to fluoride toxicity during short-term and long-term exposures. This difference in sensitivity to fluoride among test species is not dependent upon the body size of net-spinning caddisfly larvae; Pearson correlation analysis between estimated SCs and larva dry weights was not significant (P〉0.05). On the other hand, SCs calculated for test species are lower than those proposed for other freshwater and marine animals. It is concluded that the multifactor probit analysis of sublethal acute toxicity data can be a valuable methodology in environmental toxicology to estimate accurate safe concentrations of chemical compounds for aquatic organisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212965
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...