Results 111 to 120 of about 100,441 (269)

Bioassay for Detection of Dichlorvos Insecticide in Air in Alfalfa Leafcutting Bee (Megachile Rotundata F.) Incubators

Journal of Apicultural Science, 2014
Dichlorvos is an insecticide used in slow-release plastic strips for controlling chalcid wasp parasites, such as Pteromalus venustus Walker, in incubators used to raise alfalfa leafcutting bees (Megachile rotundata F.). Beekeepers need a practical method
Purdy John R., Kevan Peter G.
doaj   +1 more source

Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon

Journal of Fish Biology, EarlyView.
Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy, Carolyn Morris, Susana Braz‐Mota, Chris M. Wood, Rafael M. Duarte, Ora E. Johannsson, Adalberto L. Val   +6 more
wiley   +1 more source

Acute Contact Toxicity of Six Pesticides in Honeybees (Apis Mellifera Meda) in Iran

Journal of Apicultural Science, 2017
Pollination has an important role in both agricultural production and wild plant reproduction. For the pollination of crops, agriculture relies largely on managed colonies of the honeybee Apis mellifera.
Rasuli Farhang, Rafie Javad Nazemi, Sadeghi Amin   +2 more
doaj   +1 more source

Aquatic Effects of a Localized Oil Spill on Lake Conway, AR and Its Tributaries [PDF]

, 2015
Oil spills, no matter where they occur, elicit environmental concern and avoiding these disasters should be a priority. Old pipelines that are not regularly maintained and carry large amounts of crude oil long distances are of particular concern.
Bouldin, J. L., Kennon, M. E.
core   +3 more sources

Bath Treatments With Emamectin Benzoate Control Dactylogyrideans Infecting Colossoma macropomum Gills Without Altering Physiology of This Host Fish

Journal of Fish Diseases, EarlyView.
ABSTRACT Intensification of fish aquaculture worldwide has led to severe problems of diseases caused by parasitic dactylogyrideans. In this study, the anti‐dactylogyridean efficacy of treating Colossoma macropomum with baths of emamectin benzoate (EMB) was investigated for the first time, along with the effects of this treatment on the haematology and ...
Raimundo Rosemiro de Jesus Baia, Marcela Nunes Videira, Amanda Mendes Pacheco, Eliane Tie Oba Yoshioka, Marcos Tavares‐Dias   +4 more
wiley   +1 more source

تعیین درجه سمیت دیازینون و بررسی اثر آن بر روی برخی شاخص های آنزیمی در فیل ماهی (Huso huso) [PDF]

مجله بهره‌برداری و پرورش آبزیان, 2014
در این تحقیق، به منظور تعیین LC50 و درجه سمیت آفت کش دیازینون در گونه فیل ماهی ابتدا آزمایش سمیت کشنده انجام شد و سپس اثرات غلظت های تحت کشنده آن بر دو شاخص آنزیمی عمومی (ALT و AST) و یک شاخص آنزیمی اختصاصی (AChE) مورد بررسی قرار گرفت.
نیما شیری, خدیجه خوشنودی فر, غلامرضا رفیعی, علیرضا میرواقفی   +3 more
doaj  

Effects of Helicoverpa armigera Nucleopolyhedrosis virus (HaNPV) on the larvae of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae)

Plant Protection Science, 2014
Laboratory studies were performed to determine the insecticidal activity of baculovirus against diamondback moth, Plutella xylostella. The nucleopolyhedrosis (HaNPV) was tested against 2nd instar larvae fed on cabbage leaf disks treated with aqueous ...
Zahra MAGHOLI, Habib ABBASIPOUR, Rasoul MARZBAN   +2 more
doaj   +1 more source

Screening of Irish Fruit and Vegetable Germplasm for Novel Anti-tumour and Pesticidal Compounds [PDF]

, 2012
Conference paperPhytochemicals are a rich source of novel therapeutic and insecticidal agents (McLaughlin and Chang, 1999). Considerable research effort has been directed at screening exotic and medicinal plants in the search for novel products. However,
Alqudah, J.M. I., Barry-Ryan, Catherine, Gaffney, Michael, Martin-Diana, A. B., Reilly, Kim   +4 more
core  

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance [PDF]

, 2018
Infestations with the cattle tick, Rhipicephalus microplus, constitute the most important ectoparasite problem for cattle production in tropical and subtropical regions worldwide, resulting in major economic losses. The control of R.
Bhushan, Chandra, Jonsson, Nicholas N., Rodriguez-Vivas, Roger I.   +2 more
core   +1 more source

Preimaginal development of Aedes aegypti L. (Diptera: Culicidae) in brackish water gives rise to adult mosquitoes with thicker cuticles and greater insecticide resistance

Medical and Veterinary Entomology, EarlyView.
The principal arboviral vector Aedes aegypti can develop in coastal brackish water field habitats (0.5–15 g/L salt) with larvae possessing thicker cuticles and greater resistance to the larvicide Temephos. Females emerging from brackish water‐developing preimaginal stages are now shown to have thicker and remodelled leg and abdominal cuticles and ...
Kokila Sivabalakrishnan, Andrew Hemphill, S. H. P. Parakrama Karunaratne, Arunasalam Naguleswaran, Isabel Roditi, Sinnathamby N. Surendran, Ranjan Ramasamy   +6 more
wiley   +1 more source