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Contents contributed and discussions participated by emmarrogers

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Acute exposure to chlorpyrifos and glyphosate induces changes in hemolymph biochemical ... - 0 views

www.sciencedirect.com/...S153204561930095X crayfish HSR-2025 HSR pesticide
shared by emmarrogers on 02 Oct 24 - No Cached
  • The 96 h LC50 values of glyphosate to A. leptodactylus were 7.83 ± 0.50 mg L−1
    • emmarrogers
      emmarrogers on 02 Oct 24
       
      This is the first 96hLC50 I have seen for crayfish
  • emmarrogers on 02 Oct 24
     
    "Astacus leptodactylus"
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Study shows crayfish exhibit anxiety-like behavior when stressed - 0 views

phys.org/...ty-like-behavior-stressed.html crayfish HSR-2025 HSR environmental biology behavioralscience behavior
shared by emmarrogers on 26 Sep 24 - No Cached
  • Spontaneous behavior of unstressed crayfish in the aquatic dark/light plus-shaped maze
    • emmarrogers
      emmarrogers on 26 Sep 24
       
      video of crayfish in maze
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Acute exposure to chlorpyrifos and glyphosate induces changes in hemolymph biochemical ... - 0 views

pubmed.ncbi.nlm.nih.gov/31055068
shared by emmarrogers on 25 Sep 24 - No Cached
  • glyphosate
    • emmarrogers
      emmarrogers on 25 Sep 24
       
      this is the most common herbicide in use agriculturally, and in common use. The trade name for this herbicide is Round up, which is a very common herbicide.
  • 49.55 ± 4.66 μg L-1
  • 7.83 ± 0.50 mg L-1
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Effect of Chronic Exposure to Prometryne on Oxidative Stress and Antioxidant Response i... - 0 views

www.ncbi.nlm.nih.gov/...PMC3976930 crayfish pesticide HSR-2025 HSR environmental biology behavioralscience
shared by emmarrogers on 20 Sep 24 - No Cached
  • oxidative stress
    • emmarrogers
      emmarrogers on 20 Sep 24
       
      Is this the same a phycological stress, or is it a different kind of stress?
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Effects of Prometryn Exposure on Hepatopancreas Oxidative Stress and Intestinal Flora i... - 0 views

www.ncbi.nlm.nih.gov/...PMC10451815 crayfish pesticide HSR-2025 HSR environmental biology behavioralscience
shared by emmarrogers on 20 Sep 24 - No Cached
  • Eriocheir sinensis
    • emmarrogers
      emmarrogers on 20 Sep 24
       
      Chinese mitten crab
  • alternative to atrazine due to its low toxicity
  • In addition, due to its low toxicity to fish, prometryn can be applied directly to aquatic activities for the removal of harmful algae and weeds in aquaculture waters
  • ...3 more annotations...
  • However, there is a paucity of studies on the negative effects of prometryn on aquatic crustaceans.
  • could affect the physiological behavior of crustacean aquatic organisms
  • Previous studies have shown that the commonly used herbicides glyphosate and atrazine are capable of causing oxidative stress,
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Crayfish Light-Dark Maze - Maze Engineers - 0 views

maze.conductscience.com/...crayfish-light-dark-maze crayfish pesticide HSR-2025 HSR environmental
shared by emmarrogers on 17 Sep 24 - No Cached
  • Time spent in the dark arms of the maze Time spent in the light arms of the maze
  • water quality
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Sub-acute toxicity of the herbicide glufosinate-ammonium exposure in adult red swamp cr... - 0 views

pubmed.ncbi.nlm.nih.gov/37742863 crayfish HSR-2025 HSR potential research idea pesticide
shared by emmarrogers on 16 Sep 24 - No Cached
  • 21 days
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      This is over 7 times the other studies I have seen
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      they are usually 24-96 hours
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Effects of the herbicide metolachlor on the perception of chemical stimuli by Orconecte... - 0 views

www.journals.uchicago.edu/...1468482 crayfish HSR-2025 HSR potential research idea pesticide
shared by emmarrogers on 16 Sep 24 - No Cached
  • It is not clear if this interference comes from masking the odor, where the animal cannot detect the signal over the background noise, or if there is a physiological effect on the olfactory receptor cells or neuromusculature that influences the animal’s behavior
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Atrazine Exposure Affects the Ability of Crayfish (Orconectes rusticus) to Localize a F... - 0 views

link.springer.com/...s00244-015-0142-y crayfish HSR-2025 HSR potential research idea pesticide
shared by emmarrogers on 16 Sep 24 - No Cached
  • all levels of the aquatic food web
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      This is a compelling argument for the idea that crayfish are a keystone species
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      look 2 rows down
  • Because crayfish are a keystone species
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The role of omnivorous crayfish in littoral communities | Oecologia - 0 views

link.springer.com/...s00442-004-1548-9 crayfish HSR-2025 HSR potential research idea pesticide
shared by emmarrogers on 16 Sep 24 - No Cached
  • indirectly
  • Metaphytic algae were strongly affected by crayfish presence
  • dramatic direct and indirect impacts
  • ...1 more annotation...
  • Abstract
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      this entire article supports the idea that crayfish are a keystone species
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Environmentally relevant atrazine exposures cause DNA damage in cells of the lateral an... - 0 views

www.ncbi.nlm.nih.gov/...PMC6854318
shared by emmarrogers on 16 Sep 24 - No Cached
  • 80 ppb atrazine
  • 10 days
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      This is the longest time I have seen so far. most studies are between 24-96 hours
  • banned in the European Union
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      I wonder why it is banned in the EU, but not the US
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      increased risk of prostate cancer and decreased sperm count in men, and a higher risk of breast cancer in women. reason why its banned
  • ...3 more annotations...
  • evapotranspiration
    • emmarrogers
      emmarrogers on 16 Sep 24
       
      Loss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plants growing on it.
  • ATR is the most commonly detected herbicide in the U.S. Midwestern region
  • This is a cause for concern as ATR can leach into aquatic ecosystems and affect aquatic organisms.
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Acute toxicity of triazine pesticides to juvenile signal crayfish (Pacifastacus leniusc... - 0 views

pubmed.ncbi.nlm.nih.gov/24362090 crayfish HSR-2025 HSR pesticide environmental
shared by emmarrogers on 13 Sep 24 - No Cached
  • The aim of this research was to evaluate the acute toxicity of atrazine, hexazinone, metribuzine, prometryne, simazine, and terbutryne
  • 96hLC50
    • emmarrogers
      emmarrogers on 17 Sep 24
       
      96 hours for the lethal concentration to kill 50 percent of the population
  • mg.l-1
    • emmarrogers
      emmarrogers on 17 Sep 24
       
      Milligrams per litre
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Herbicides in Water Sources: Communicating Potential Risks to the Population of Mangaun... - 0 views

www.ncbi.nlm.nih.gov/...PMC10302186
shared by emmarrogers on 13 Sep 24 - No Cached
  • The mean concentrations of atrazine, metolachlor, simazine and terbuthylazine were 0.02 mg/L, 0.01 mg/L, 0.03 mg/L and 0.02 mg/L, respectively
  • Algae and invertebrates were also sensitive to atrazine,
  • Their corresponding average concentrations were 0.02 mg/L, 0.12 mg/L, 0.03 mg/L, and 0.01 mg/L.
  • ...1 more annotation...
  • The mean concentrations of atrazine, metolachlor, simazine, and terbuthylazine were 0.03 mg/L, 0.01 mg/L, 1.82 mg/L, and 0.06 mg/L
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Herbicide concentrations in the Mississippi River Basin-the importance of chloroacetani... - 0 views

www.sciencedirect.com/...S0048969703005084 crayfish HSR-2025 HSR environmental pesticide
shared by emmarrogers on 12 Sep 24 - No Cached
  • eethylatrazine
  • deisopropylatrazine
  • atrazine
    • emmarrogers
      emmarrogers on 12 Sep 24
       
      Atrazine is one of the main pesticides used in Agriculture
  • ...2 more annotations...
  • DEA was detected in 61%, and DIA was detected in 42% of water samples collected from the Mississippi River at Baton Rouge
  • In 1991, alachlor ESA concentrations ranged from 0.2 to 0.9 μg/l, whereas alachlor concentrations ranged from 0.05 to 0.1 μg/l for multiple samples collected from the mouth to the headwaters of the Mississippi River
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Sustaining America's Aquatic Biodiversity - Crayfish Biodiversity and Conservation | VC... - 0 views

www.pubs.ext.vt.edu/...420-524.html crayfish HSR HSR-2025 behavioralscience environmental
shared by emmarrogers on 11 Sep 24 - No Cached
  • Crayfish are ecologically and economically valuable animals.
  • nearly 75 percent crayfish.
  • Crayfish are important indicators of water quality
  • ...1 more annotation...
  • sensitive to water pollution
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Overlooked keystone species in conservation plans of fluvial ecosystems in Southeast Eu... - 0 views

www.kmae-journal.org/...kmae210127.html crayfish HSR HSR-2025 questions
shared by emmarrogers on 11 Sep 24 - No Cached
  • Since crayfish species are known to cover a wide spectrum of ecological functions they are considered as keystone species and ecosystem engineers. Therefore, their decline may substantially impair local biodiversity and ecosystem services.
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Trends in pesticide concentrations and use for major rivers of the United States - Scie... - 0 views

www.sciencedirect.com/...S0048969715302928 HSR-2025 environmental pesticide crayfish
shared by emmarrogers on 11 Sep 24 - No Cached
  • The pesticides include the herbicides cyanazine, alachlor, atrazine and its degradate deethylatrazine (DEA), metolachlor, and simazine; and the insecticides chlorpyrifos, malathion, diazinon, carbofuran, and carbaryl.
  • All 11 compounds are among the top 20 most frequently detected in US streams and rivers
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