Results 51 to 60 of about 460,100 (427)

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Cocktail effect of Profenophos and Abamectin on tadpoles of Asian Common Toad (Duttaphrynus melanostictus)

open access: yesCeylon Journal of Science, 2018
Farmers mix two or more pesticides as mixing saves the spraying time and the labour cost and also with the idea that it increases the efficiency. The cocktail effect of two agrochemicals, profenophos and abamectin, was tested on the tadpoles of the Asian
R. R. P. Y. K. Rathanayaka   +1 more
doaj   +1 more source

Delayed mortality effects cut the malaria transmission potential of insecticide resistant mosquitoes [PDF]

open access: yes, 2016
Malaria transmission has been substantially reduced across Africa through the distribution of long-lasting insecticidal nets (LLINs). However, the emergence of insecticide resistance within mosquito vectors risks jeopardizing the future efficacy of this ...
Ferguson, Heather M.   +4 more
core   +2 more sources

State‐of‐the‐Art, Insights, and Perspectives for MOFs‐Nanocomposites and MOF‐Derived (Nano)Materials

open access: yesAdvanced Materials, EarlyView.
Different approaches to MOF‐NP composite formation, such as ship‐in‐a‐bottle, bottle‐around‐the‐ship and in situ one‐step synthesis, are used. Owing to synergistic effects, the advantageous features of the components of the composites are beneficially combined, and their individual drawbacks are mitigated.
Stefanos Mourdikoudis   +6 more
wiley   +1 more source

Controle químico de ovos e ninfas de Bemisia tabaci biótipo B (Hemiptera: aleyrodidae) Chemical control of Bemisia tabaci B biotype (Hemiptera: aleyrodidae) eggs and nymphs

open access: yesScientia Agricola, 2002
Moscas brancas são pragas de diversas culturas, causam redução na produção e na qualidade do produto. Inseticidas, com diferentes modos de ação vêm sendo utilizados, sem muito sucesso.
Giuliana Etore do Valle   +2 more
doaj   +1 more source

Genomic adaptation to polyphagy and insecticides in a major East Asian noctuid pest

open access: yesNature Ecology & Evolution, 2017
The tobacco cutworm, Spodoptera litura, is among the most widespread and destructive agricultural pests, feeding on over 100 crops throughout tropical and subtropical Asia.
Tingcai Cheng   +37 more
semanticscholar   +1 more source

Engineering Magnetotactic Bacteria as Medical Microrobots

open access: yesAdvanced Materials, EarlyView.
Magnetotactic bacteria (MTB) are living microorganisms that produce magnetosomes for navigation using the Earth's geomagnetic field. Their built‐in magnetic components, along with their intrinsic and/or modified biological functions, make them one of the most promising platforms for making future living and programmable microrobots.
Jiaqi Wang   +9 more
wiley   +1 more source

Undesired Effects of Bioinsecticides Molecules in Wistar Rats: Case of Spirotetramat, Citrulus Colocynthis and Cleome Arabica Extracts

open access: yesJournal of Bioresource Management, 2021
The use of pesticides is becoming an indispensable technique in most agricultural practices, regardless of the level of development of the country. Currently, the pesticides used are often less toxic and more specific and are based on insect physiology ...
Boublata Nour El Iméne   +4 more
doaj   +1 more source

\ud Detection and Monitoring of Insecticide Resistance in Malaria Vectors in Tanzania Mainland\ud [PDF]

open access: yes, 2011
\ud Vector control is a major component of the global strategy for malaria control which aims to prevent parasite transmission mainly through interventions targeting adult Anopheline vectors.
Batengana , B   +13 more
core  

Discovery and development of pyrethroid insecticides

open access: yesProceedings of the Japan Academy. Series B, Physical and biological sciences, 2019
Pyrethroid insecticides contain natural pyrethrins extracted from pyrethrum flowers, and their synthetic derivatives, pyrethroids. The present article provides an overview of the structure of natural pyrethrins, and the discovery and development of ...
N. Matsuo
semanticscholar   +1 more source

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