Composition and insecticidal activity of the essential oil of Artemisia igniaria Maxim. flowering aerial parts against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)

2012 ◽  
Vol 6 (16) ◽  
Author(s):  
Sha Sha Chu
2015 ◽  
Vol 17 (4 suppl 1) ◽  
pp. 769-773 ◽  
Author(s):  
R.L. CANSIAN ◽  
V. ASTOLFI ◽  
R.I. CARDOSO ◽  
N. PAROUL ◽  
S.S. ROMAN ◽  
...  

ABSTRACT The aim of this work was to evaluate the insecticidal and repellency activity of the essential oil of Cinnamomum camphora var. linaloolifera Y. Fujita (Ho-Sho) and Cinnamomumcamphora (L.) J Presl.var. hosyo (Hon-Sho), against the Sitophilus zeamais in maize grains. The essential oils were obtained by hydrodistillation and analyzed by GC-MS.The insecticidal activity was determined by the toxicity of different concentrations of essential oils during 24 hours of contact with the insects, in the absence of feed substrate. The Bioassays of repellency were conducted with lethal doses (LD50,LD25,and LD12.5) obtained from insecticidal bioassay. In order to compare the treatments the preference index (PI) was employed. The analysis of the essential oils of Cinnamomum camphora leaves indicated 68% of camphor and 9% of linalool for the variation Hon-Sho and 95% of linalool to the variation Ho-Sho. The variation Ho-Sho presented greatest insecticidal activity than the variation Hon-Sho against the Sitophiluszeamais, with LD50 of 0.35 μL/cm2, whereas in the variation Hon-Sho the ratewas 0.48 μL/cm2. However, considering only the concentrations of linalool and camphor of Ho-Sho and Hon-Sho, the lethal doses’ evaluation of these compounds were similar. The values of the preference index ranged from -0.3 to -0.8 for thevariation Ho-Sho and -0.2 to -0.7 for the variation Hon-Sho. The essential oils evaluated in this work showed repellent activity against Sitophiluszeamais in vitro and in trials performed in mini-silos.


2019 ◽  
Vol 32 (2) ◽  
pp. 354-363
Author(s):  
TACIANA LOPES DA SILVA ◽  
CARLOS ROMERO FERREIRA DE OLIVEIRA ◽  
CLÁUDIA HELENA CYSNEIROS MATOS ◽  
CÉSAR AUGUSTE BADJI ◽  
RENILSON PESSOA MORATO

ABSTRACT The present study aimed to assess the effects of the essential oil of Croton pulegiodorus Baill on eight populations of Sitophilus zeamais Motschulsky with different patterns of susceptibility to synthetic insecticides. Populations of S. zeamais were obtained from Sete Lagoas-MG, Jacarezinho-PR, Bom Conselho-PE, Garanhuns-PE, Jupi-PE, Lajedo-PE, São João-PE and Serra Talhada-PE. To estimate the lethal concentrations (LC50 and LC90) of oil for each population, fumigation tests were performed. The susceptibility of S. zeamais to the essential oil varied among populations. Garanhuns and Bom Conselho was considered the susceptibility patterns, presenting the lowest LC50 (3.40 μL L-1 of air) and LC90 (9.60 μL L-1 of air) for the essential oil, respectively. The population from Jupi exhibited the highest LC50 (14.49 μL L-1 of air) and LC90 (19.60 μL L-1 of air) for C. pulegiodorus. The resistance ratio ranged from 1.84 for the São João to 4.26 for the Jupi population. Thus, the essential oil of C. pulegiodorus showed fumigant activity, causing mortality in all S. zeamais populations used.


2010 ◽  
Vol 5 (7) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Moses S. Owolabi ◽  
Labunmi Lajide ◽  
Heather E. Villanueva ◽  
William N. Setzer

The essential oil from the aerial parts of Blumea perrottetiana was obtained by hydrodistillation and analyzed by GC-MS. The volatile oil is dominated by 2,5-dimethoxy- p-cymene (30.0%) and 1,8-cineole (11.0%) with lesser amounts of sabinene (8.1%), δ-cadinene (5.3%) and ( E)-caryophyllene (3.9%). The essential oil demonstrated notable insecticidal activity against the red flour beetle, Tribolium castaneum, consistent with traditional uses of the plant as an insecticide and anthelmintic.


2017 ◽  
Vol 110 ◽  
pp. 75-82 ◽  
Author(s):  
John F. Kamanula ◽  
Steven R. Belmain ◽  
David R. Hall ◽  
Dudley I. Farman ◽  
David J. Goyder ◽  
...  

2015 ◽  
Vol 14 (9) ◽  
pp. 1685-1689
Author(s):  
MP Zhao ◽  
XC Liu ◽  
QZ Liu ◽  
ZL Liu

Purpose: To investigate the chemical composition and insecticidal activity of the essential oil of the aerial parts of Ainsliaea fragrans against maize weevils (Sitophilus zeamais).Methods: The essential oil of A. fragrans aerial parts was obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas chromaotography-mass spectrometry (GC-MS). Contact toxicity of the essential oil and its major constituents was determined by topical application against S. zeamais.Results: A total of 30 components of the essential oil were identified. The major constituents were myristicin (41.3 %), elemicine (11.9 %), cis-isosafrole (11.5 %), borneol (9.1 %) and caryophyllene (8.8 %). The essential oil of A. fragrans exhibited contact toxicity against S. zeamais with LC50 value of 50.7 μg/adult. Elemicine possessed the strongest contact toxicity (LC50 = 13.5 μg/adult) while cis-isosafrole, myristicin, caryophyllene and borneol had LC50 values of 31.2 μg/adult, 43.4 μg/adult, 57.9 μg/adult, and 98.4 μg/adult, respectively.Conclusion: The study indicates that the essential oil of A. fragrans aerial parts and its major constituents have a potential for development into natural insecticides for the control of grain storage insects.Keywords: Ainsliaea fragrans, Sitophilus zeamais, Contact toxicity, Elemicine, Essential oil, Grain storage


PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0167748 ◽  
Author(s):  
Min Liao ◽  
Jin-Jing Xiao ◽  
Li-Jun Zhou ◽  
Yang Liu ◽  
Xiang-Wei Wu ◽  
...  

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