Results 101 to 110 of about 1,548 (207)

Efeitos da aplicação de agrotóxicos utilizados na produção integrada de maçã sobre pupas de Chrysoperla externa Effects of pesticides application used in integrated apple production on Chrysoperla externa pupae

open access: yesCiência Rural, 2009
Devido à grande importância de Chrysoperla externa (Neuroptera: Chrysopidae) como agente de controle biológico de artrópodes-praga na cultura da macieira no Brasil, avaliaram-se os efeitos dos agrotóxicos (g i.a.
Alexandre Pinho de Moura   +4 more
doaj  

The First Record of Argulus Foliacesus (Crustacea: Branchiura) Infesta­tion on Lionhead Goldfish (Carassius Auratus) in Iran [PDF]

open access: yesIranian Journal of Parasitology, 2010
Argulus foliaceus (Crustacea: Branchiura), or the fish louse, is an ectoparasite of the skin or gill of the fresh water fish species. Clinical signs in infected fish include scratching on aquarium walls, erratic swimming, and poor growth.
AH Shahmoradi, Y Chelongar, V Noaman
doaj  

Determination of Trichlorfon in Technical and Powder Formulations

open access: yesJournal of AOAC INTERNATIONAL, 1988
Abstract A facile procedure is described for the determination of trichlorfon in technical material and an 80% powder formulation by using liquid chromatography with ion-pairing and UV detection. Liquid chromatography allows the direct determination of trichlorfon and detection of any dichlorvos present.
openaire   +1 more source

ALTERAÇí-ES HEMATOLÓGICAS EM CURIMBATÁ, Prochilodus scrofa STEINDACHNER, 1881, EXPOSTO AO DIPTEREX 500 (TRICHLORFON)

open access: yesBoletim do Instituto de Pesca, 2019
Espécimes juvenis de curimbatá, Prochilodus scrofa, foram divididos em dois lotes, colocados em aquários de 81 litros, sendo um controle e outro tratado com Dipterex 500 (Trichlorfon), na concentração de 0,2 µL/L, onde os peixes permaneceram até o ...
Maria José Tavares RANZANI-PAIVA   +4 more
doaj  

Assessing lethal and sub-lethal effects of trichlorfon on different trophic levels [PDF]

open access: yes
Trichlorfon (TCF) is one of the most used veterinary pharmaceuticals not only to fight infestations but also as a preventive measure worldwide. The high concentrations used generate concerns about environmental and human health.
Pereira, Susana   +7 more
core   +1 more source

Toxic effects of trichlorfon on perch Lateolabrax maculatus [PDF]

open access: yes, 2011
为了给中国花鲈(lATEOlAbrAX MACulATuS)病害防治提供根据,研究了不同浓度的敌百虫对中国花鲈鱼苗和幼鱼的急性毒性,检测了幼鱼肝脏的谷胱甘肽(gSH)、丙二醛(MdA)含量及超氧化物歧化酶(SOd)、过氧化氢酶(CAT)、谷丙转氨酶(gPT)、谷草转氨酶(gOT)和乙酰胆碱酯酶(ACHE)活力,测定了暴露在不同浓度敌百虫中幼鱼的红细胞总核异率和微核率。结果表明:敌百虫对中国花鲈鱼苗24、48、72和96 H的半致死浓度分别为7.76、3.02、1.74和1.58 Mg.l-1 ...
朱友芳, 洪万树
core  

EFEITO AGUDO DO ORGANOFOSFORADO DIPTEREX 500 (TRICHLORFON) EM BAí­"¡O DE CURIMBATÁ Prochilodus scrofa (STEINDACHNER, 1881)

open access: yesBoletim do Instituto de Pesca, 2019
Utilizando espécimes juvenis de Prochilodus scrofa, foram registradas alterações agudas no baço de indiví­­duos expostos ao organofosforado Dipterex 500 (Trichlorfon). A concentração utilizada foi de 0,2 µL/Iitro de água de diluição.
Edson de Lara RODIRGUES   +4 more
doaj  

Combined effects of some insecticides and different isolates of Beauveria bassiana and Metarhizium anisopliae on mortality and immune responses of Chilo suppressalis Walker (Lepidoptera: Crambidae)

open access: yesInvertebrate Survival Journal
The combined use of microbial agents and chemical insecticides is an effective strategy against insect pests in agroecosystems. This study evaluates the effects of four insecticides-permethrin, fenitrothion, trichlorfon, and tebufenozide-together with ...
H Firouzbakht, A Zibaee, M Ghadamyari
doaj  

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