Results 41 to 50 of about 80,912 (204)

Safety Evaluation of Chemical Insecticides to Tetrastichus howardi (Hymenoptera: Eulophidae), a Pupal Parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae) Using Three Exposure Routes

open access: yesInsects, 2022
Spodoptera frugiperda has become a major pest in many crops worldwide. The main control strategies are biological and chemical controls. However, pesticides have varying degrees of toxicity to parasitic wasps in the field.
Zhuo Liu   +5 more
doaj   +1 more source

Locomotion Inhibition of Cimex lectularius L. Following Topical, Sublethal Dose Application of the Chitin Synthesis Inhibitor Lufenuron

open access: yesInsects, 2017
To date, few studies have evaluated chitin synthesis inhibitors against bed bugs, although they would provide an alternative mode of action to circumvent insecticide resistance.
Brittany Campbell   +2 more
doaj   +1 more source

His+ reversions Caused in Salmonella typhimurium by different types of ionizing radiation [PDF]

open access: yes, 1988
The yield of his+ reversions in the Ames Salmonella tester strain TA2638 has been determined for 60Co γ rays, 140 kV X rays, 5.4 keV characteristic X rays, 2.2 MeV protons, 3.1 MeV α particles, and 18 MeV/U Fe ions.
Fitzek, M.   +3 more
core   +1 more source

Sublethal effects of trimethoprim on four freshwater organisms

open access: yesEcotoxicology and Environmental Safety, 2012
Sublethal effects of trimethoprim (TMP) were evaluated in four freshwater organisms: Pseudokirchneriella subcapitata and Lemna minor (growth inhibition), Daphnia magna (reproduction and growth inhibition) and Poecilia reticulata (swimming activity inhibition). Cytochrome P4501A induction was also evaluated in P. reticulata. TMP showed varying levels of
DE LIGUORO, MARCO   +5 more
openaire   +3 more sources

Sublethal doxorubicin promotes migration and invasion of breast cancer cells: role of Src Family non-receptor tyrosine kinases

open access: yesBreast Cancer Research, 2021
Background Doxorubicin (Dox) is a widely used chemotherapy, but its effectiveness is limited by dose-dependent side effects. Although lower Dox doses reduce this risk, studies have reported higher recurrence of local disease with no improvement in ...
Samia Mohammed   +9 more
doaj   +1 more source

Costs of Chronic Waterborne Zinc Exposure and the Consequences of Zinc Acclimation on the Gill/Zinc Interactions of Rainbow Trout in Hard and Soft Water [PDF]

open access: yes, 1999
Juvenile rainbow trout were exposed to zinc in both moderately hard water (hardness 5 120 mg CaCO3/L, pH = 8.0, Zn = 150 μg/L or 450 μg/L) and soft water (hardness = 20 mg CaCO3/L, pH = 7.2, Zn = 50 μg/L or 120 μg/L) for 30 d.
Alsop, Derek H.   +3 more
core   +2 more sources

Sublethal effects of three ectoparasites on fish [PDF]

open access: yesJournal of Fish Biology, 1975
Vulnerability to predation, resistance to high temperature, weight‐length relationships, and fecundity were compared for fish with and without or with light and heavy infestations of three ectoparasites. The fish and parasites were fathead minnow (Pimephales promelas) with anchor worm (Lernaea cyprinaceae); brook trout (Salvelinus fontinalis) with gill
Gene E. Vaughan, Daniel W. Coble
openaire   +1 more source

Lethal Temperatures of Diapausing \u3ci\u3eBathyplectes Curculionis\u3c/i\u3e (Hymenoptera: Ichneumonidae) a Parasite of the Alfalfa Weevil (Coleoptera: Curculionidae) [PDF]

open access: yes, 2017
Seasonally acclimatized diapausing larvae of Bathyplectes curculionis (Thomson) were exposed to extreme hxgh and low temperatu~es to determine lethal temperatures for this stage of the parasite.
Armbrust, Edward J   +2 more
core   +2 more sources

Effects of sublethal and realistic concentrations of the commercial herbicide atrazine in Pacu (Piaractus mesopotamicus): Long-term exposure and recovery assays [PDF]

open access: yesVeterinary World, 2020
Background and Aim: The commercial formulations of the herbicide atrazine (cATZ) are widely employed in Brazilian agriculture, and, as a consequence, ATZ has been found at levels above that established by law in the river basins in Brazil.
Mariana Cruz Delcorso   +5 more
doaj   +1 more source

2018 State-of the Science of Dispersants and Dispersed Oil (DDO) in U.S. Arctic Waters: Eco-Toxicity and Sublethal Impacts [PDF]

open access: yes, 2018
Chemical dispersants were employed on an unprecedented scale during the Deepwater Horizon oil spill in the Gulf of Mexico, and could be a response option should a large spill occur in Arctic waters. The use of dispersants in response to that spill raised
Coastal Response Research Center (CRRC)
core   +1 more source

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