Term
Major components of aircraft de-icers |
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Definition
ethylene glycol, propylene glycol, additives |
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Term
Endocrine-disrupting phenolic compounds found in surfactants incorporated into anti-icers. |
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Definition
(alkylphenol polyethoxylate) break down into organic micropollutants Nonylphenol, octylphenol, and bisphenol A |
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Term
Major anti-corrosive additives to anti-icers found at an airport in Switzerland |
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Definition
Benzotrialzole and tolytrialoze |
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Term
Three characteristics of anti-corrosive additive compounds that makes them important freshwater contaminants |
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Definition
High polarity, low biodegradability, high water solubility |
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Term
Effects of ethylene glycol on dissolved oxygen concentrations |
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Definition
High oxygen demand. Impairs aquatic system |
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Term
Developmental effects of ethylene glycol diethyl ether in rodents (9) |
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Definition
Reduced maternal weight gain, embryo toxicity, decreased litter size, decreased fetal weight, malformaties, decreased erthocyte counts, decreased hematocrit and hemoglobin, increased blood urea and creatine, histopathologic changes |
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Term
Kidney as a major target organ of ethylene glycol |
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Definition
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Term
How anti-icers can impact microbial components of soils |
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Definition
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Term
How runoff from soils can be reduced through land management |
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Definition
Use of plants to remove toxins |
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Term
Name of herbicide mixture used in Viet Nam war, of which 2,4-D constituted 50%. (The other 50%, made up of 2,4,5-T was contaminated with 2,3,7,8-tetrachlorodibenzodioxin.) |
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Definition
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Term
Toxic mechanism of action in plants. |
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Definition
stimulates uncoordinated growth in some areas while inhibiting others |
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Term
Type of cancer with which 2,4-D has been linked in dogs and humans beings. |
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Definition
Non-Hodgkin’s Lymphoma in humans and Malignant Lymphoma in canines, |
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Term
Primary source of exposure to dogs. |
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Definition
. Exposure occurs via contact with the herbicide on household lawns and owner apparel after application of the chemical. Dogs are fastidious groomers and ingest the herbicide by licking their paws and coats |
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Term
Specimen in which 2,4-D can readily be detected two days after a dog has been exposed. |
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Definition
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Term
Body function in a frog species that was impacted by 2,4-D. |
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Definition
impairs oocyte maturation by blocking meiotic maturation in vitro |
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Term
Body function in fish that can be impaired by high concentrations of 2,4-D. |
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Definition
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Term
Alternatives to herbicides to help reduce weeds. |
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Definition
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Term
Avian species documented in different outbreaks of AVM. |
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Definition
bald eagles, American coots, mallards, Canada geese, killdeer, buffleheads, ring-necked ducks, great horned owl, American kestrel |
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Term
How diagnosis of AVM is established & challenge this may represent. |
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Definition
microscopic examination of brain tissue for microscopic vacuolizatino of white matter and lesions |
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Term
Classical clinical signs of AVM. |
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Definition
Clinical signs are typical of central nervous system damage which includes ataxia, the inability or difficulty to fly, walk or swim. Birds affected by this disease are observed swimming in circles or flying into rock walls |
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Term
How AVM was reproduced in red-tail hawks. |
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Definition
Fed GI contents of AVM affected coots to hawks |
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Term
The invasive macrophyte plant on which the toxigenic organism is believed to grow. |
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Definition
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Term
Epiphytic cyanobacteria that was implicated in AVM. |
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Definition
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Term
Category of herbicide to which atrazine belongs (there are several in this group with similar toxicity). |
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Definition
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Term
Primary crop on which atrazine is applied. |
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Definition
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Term
Urban sites where animals may encounter atrazine |
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Definition
pasture, parks, golf courses, christmas tree farms |
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Term
Mechanism of toxic action of atrazine in plants. |
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Definition
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Term
States where atrazine is most widely used & trends over the last 15 years in terms of usage. |
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Definition
Illinois, Iowa, Indiana, Ohio, Nebraska, Delaware |
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Term
Major effect of atrazine in frogs. |
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Definition
hermaphorodite (endrocrine disruptor) |
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Term
Aspects of environmental fate that increase exposures to atrazine |
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Definition
Water soluble, can evaporate and be redistributed in rain, potential to bioaccumulate, persists in environment for several months |
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Term
Ecological roles of algae that may be inhibited by atrazine. |
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Definition
Food, oxygen production, shelter |
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Term
Parts of the world where atrazine has been banned in agriculture. |
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Definition
Europe and Central Asia (Denmark, Germany, Norway, Sweden, Slovenia, Angola, South Africa) |
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Term
How concentrations of PCBs in orcas whales compare to those in other species. |
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Definition
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Term
Why selective retention of PCBs in orcas is a major concern (because the toxicity of the coplanars tends to be greater). |
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Definition
Low activity of detoxifying enzymes |
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Term
How different populations of orcas develop different feeding habits & thus exposures. |
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Definition
transients- eat other marine mammals and have highest PCB concentrations due to trophic level and bioaccumulation in their prey. Residents eat fish and have high PCB's |
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Term
Why it would be risky, but still a better idea for an orca to swim in a pod than a clan or community of orcas. |
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Definition
NOT A LOGICAL QUESTION since several pods made a clan and several clans make a community. What was Val thinking? |
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Term
How some orcas reflect local sources of PCBs, but others reflect those from far away. |
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Definition
migration? Global PCB transportation? Long Life? |
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Term
Basis for different adult female & male PCB burdens. |
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Definition
Females pass 60% of PCB load to offspring |
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Term
Impacts of birth order on body burdens on orcas |
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Definition
First born= highest burden (3-8 times higher than younger siblings) |
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Term
Late period of life when female orca body burdens increase |
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Definition
after they stop calving (reproductive sensescence) |
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Term
Body burdens & life expectancy of males compared to females in orcas |
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Definition
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Term
Major constraints on population recovery for orcas globally |
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Definition
Historic capture for aquaria, Boat traffic, Food supply pressures, Emergine infections, Global migration, suppressed immune system from PCB's |
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