Results 11 to 20 of about 95,173 (266)

مواجهه کوتاه مدت با غلظت‌های کشنده آمونیاک مولکولی در بچه ماهیان کپور معمولی (Cyprinus carpio) [PDF]

open access: yesمجله بهره‌برداری و پرورش آبزیان, 2018
در این پژوهش اثرات سطوح بالای آمونیاک بر تغییرات رفتاری و تعیین دوز میان کشنده (LC50) بچه ماهیان کپور معمولی مورد بررسی قرار گرفت. برای این منظور تعداد 180 قطعه ماهی کپور معمولی (Cyprinus carpio) با میانگین وزنی 4/0 ± 1/4 گرم در 18 آکواریوم با تراکم 10 ...
محمد مازندرانی   +1 more
doaj   +1 more source

Acute toxicity of synyhetic resin effluent to African Catfish, Clarias gariepinus [BURCHELL, 1822]. [PDF]

open access: yes, 2012
Aquatic pollution as a field has gained a lot of attention over the decades majorly because of the vital role the aquatic environment plays in the human lifecycle.
Dahunsi, S. O., Oranusi, S. U.
core   +1 more source

Susceptibility to Spirodiclofen in field populations of Tetranychus urticae (Acari: Tetranychidae) from strawberry plantations in Lima region, Peru

open access: yesPeruvian Journal of Agronomy, 2020
The use of inhibitors of lipids synthesis is among the available strategies for the control of Tetranychus urticae (Acari: Tetranychidae) in strawberry plantations. The study aimed to monitor the susceptibility to Spirodiclofen in field populations of T.
Juan Flores-Bernedo   +1 more
doaj   +1 more source

In Vitro Anthelmintic Areca catechu Crude Aqueous Extract Against Haemonchus contortus in The Sheep

open access: yesJurnal Sain Veteriner, 2022
Haemonchosis is a gastrointestinal parasitic disease in sheep caused by Haemonchus contortus. The biggest economic losses due to this disease are mortality, decreased production, stunted growth, and low body weight.
Annisa Putri Cahyani   +3 more
doaj   +1 more source

Histopathological effects of cypermethrin and Bacillus thuringiensis var. israelensis on midgut of Chironomus calligraphus larvae (Diptera: Chironomidae) [PDF]

open access: yes, 2018
Pesticides are extensively used for the control of agricultural pests and disease vectors, but they also affect non-target organisms. Cypermethrin (CYP) is a synthetic pyrethroid used worldwide. Otherwise, bioinsecticides like Bacillus thuringiensis var.
Arrighetti, Florencia   +2 more
core   +1 more source

Status and Management of Pyrethroid Resistance in the Predatory Mite, \u3ci\u3eAmblyseius Fallacis\u3c/i\u3e (Acarina: Phytoseiidae) [PDF]

open access: yes, 2017
Low levels of (5-15 fold) resistance to synthetic pyrethroid (SP) insecticides occur in unexposed apple orchard populations of the predatory mite, Amblyseius fallacis Garman.
Croft, B. A
core   +2 more sources

Acute-lethal Toxicity (LC50) Effect of Terminalia catappa Linn. Leaves Extract on Oreochromis niloticus (red Nile tilapia) Juveniles Under Static Toxicity Exposure

open access: yesOriental Journal of Chemistry, 2019
Presnt study was conducted to assess the toxic effect of Terminalia catappa leaf extract on the red Nile tilapia (Oreochromis niloticus) juveniles under static toxicity exposure (96 h exposure).
K. Yunus   +2 more
semanticscholar   +1 more source

Pre-probiotic effects of different bacterial species in aquaculture: behavioral, hematological and oxidative stress responses

open access: yesOceanological and Hydrobiological Studies, 2022
There is very limited aquaculture research on candidate probiotics and their effects on fish physiology. In this study, acute applications of four different molecularly identified bacterial species – Brevibacillus brevis FD-1 (A), Pseudomonas fluorescens
Alak Gonca   +4 more
doaj   +1 more source

Efficacy of Decontaminating Agents for Raw Vegetable Consumption and Sensory Screening

open access: yesJournal of Pure and Applied Microbiology, 2017
Sanitization of vegetables consumed raw has tremendous importance due to health risks associated with food-borne pathogens. This study elaborated the effectiveness of varied concentrations of disinfectants used for washing fresh carrot vegetable against ...
Bhavish Sood   +4 more
doaj   +1 more source

A new sighting study for the fixed concentration procedure to allow for gender differences [PDF]

open access: yes, 2011
The fixed concentration procedure (FCP) has been proposed as an alternative to the median lethal concentration (LC50) test (organisation for economic co-operation and development (OECD) test guideline [TG] 403) for the assessment of acute inhalation ...
Charlotte Price   +11 more
core   +2 more sources

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