caa a22 4500 445341270 CHVBK 20180411092528.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00436-011-2388-2 doi (NATIONALLICENCE)springer-10.1007/s00436-011-2388-2 Chemical composition and larvicidal activity of Blumea densiflora essential oils against Anopheles anthropophagus [Elektronische Daten] a malarial vector mosquito [Liang Zhu, Yingjuan Tian] Blumea densiflora, an edible and medicinal plant, is chiefly distributed in Southeast Asia and South Asia. Essential oils extracted by steam distillation from B. densiflora were investigated for their chemical composition and larvicidal activity against Anopheles anthropophagus, the primary vector of malaria in China and other East Asian countries. Totally, 46 compounds were identified by gas chromatography and mass spectroscopy. The major chemical compounds identified were borneol (11.43%), germacrene D (8.66%), β-caryophyllene (6.68%), γ-terpinene (4.35%), sabinene (4.34%), and β-bisabolene (4.24%). A series of concentrations of essential oil (that ranged from 6.25 to 150ppm) were tested against A. anthropophagus fourth-instar larvae according to WHO recommendation. In general, larval mortality increased as concentration and exposure time increased, indicating a dose-dependent effect, and high insecticidal activity showed that 100% mortality occurred within 6h at 150ppm, 10h at 100ppm, 30h at 50ppm, and 30h at 25ppm essential oil concentration. The LC50 values were 22.32 (after 12h) and 10.55ppm (after 24h), and the LC90 values were 54.04 (after 12h) and 33.56ppm (after 24h). Pylarvex, the reference standard, had better larvicidal activity, causing 100% mortality within 2h at 150ppm and within 6h at 6.25ppm. The results clearly reveal that the essential oil of B. densiflora served as a potential, eco-friendly mosquito larvicide against the malarial vector mosquito A. anthropophagus. Springer-Verlag, 2011 Zhu Liang College of Food and Bioengineering, South China University of Technology, 510641, Guangzhou, Guangdong Province, China aut Tian Yingjuan College of Food and Bioengineering, South China University of Technology, 510641, Guangzhou, Guangdong Province, China aut Parasitology Research Springer-Verlag 109/5(2011-11-01), 1417-1422 0932-0113 109:5<1417 2011 109 436 https://doi.org/10.1007/s00436-011-2388-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00436-011-2388-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhu Liang College of Food and Bioengineering, South China University of Technology, 510641, Guangzhou, Guangdong Province, China aut NATIONALLICENCE 700 1- Tian Yingjuan College of Food and Bioengineering, South China University of Technology, 510641, Guangzhou, Guangdong Province, China aut NATIONALLICENCE 773 0- Parasitology Research Springer-Verlag 109/5(2011-11-01), 1417-1422 0932-0113 109:5<1417 2011 109 436 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 445341270 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer