caa a22 4500 445894466 CHVBK 20180317145627.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10750-011-0629-0 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0629-0 Use of plant products and copepods for control of the dengue vector, Aedes aegypti [Elektronische Daten] [K. Murugan, Jiang-Shiou Hwang, K. Kovendan, K. Prasanna Kumar, C. Vasugi, A. Naresh Kumar] The efficacy of plant extracts (neem tree, Azadirachta indica A. Juss.; Meliaceae) and copepods [Mesocyclops aspericornis (Daday)] for the control of the dengue vector Aedes aegypti L. was tested in the laboratory. Neem Seed Kernel Extract (NSKE) at 25, 50, 100, 200 and 400ppm caused significant mortality of Ae. aegypti larvae. Lethal concentrations (LC50 and LC90) were worked out. The LC50 and LC90 values for I to IV larval instars were 111.98, 138.34, 158.93, 185.22ppm and for pupae was 146.13ppm, respectively. The LC90 value of I instar was 372.95ppm, II instar was 422.77ppm, III instar was 440.63ppm, IV instar was 456.96ppm, and pupae was 476.92ppm, respectively. A study was conducted to test the whether the predatory efficiency of copepods on first instars changed in the presence of NSKE. The percentage of predatory efficiency of copepod was 6.80% in treatments without NSKE and the percentage of predatory efficiency increased up to 8.40% when copepods were combined with NSKE. This increase in predation efficiency may caused by detrimental effects of the neem active principle compound (Azadirachtin) on the mosquito larvae. Our results suggest that the combined application of copepods and neem extract to control Aedes populations is feasible. Repeated application of neem does not cause changes in copepod populations, because neem is highly degradable in the environment. Springer Science+Business Media B.V., 2011 Aedes aegypti nationallicence Mesocyclops aspericornis nationallicence Neem nationallicence Predation nationallicence Mosquito control nationallicence Murugan K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut Hwang Jiang-Shiou Institute of Marine Biology, National Taiwan Ocean University, 202-24, Keelung, Taiwan aut Kovendan K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut Prasanna Kumar K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut Vasugi C. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut Naresh Kumar A. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut Hydrobiologia Springer Netherlands 666/1(2011-05-01), 331-338 0018-8158 666:1<331 2011 666 10750 https://doi.org/10.1007/s10750-011-0629-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0629-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Murugan K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Hwang Jiang-Shiou Institute of Marine Biology, National Taiwan Ocean University, 202-24, Keelung, Taiwan aut NATIONALLICENCE 700 1- Kovendan K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Prasanna Kumar K. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Vasugi C. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Naresh Kumar A. Department of Zoology, School of Life Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 666/1(2011-05-01), 331-338 0018-8158 666:1<331 2011 666 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer