caa a22 4500 445341149 CHVBK 20180317142813.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00436-011-2374-8 doi (NATIONALLICENCE)springer-10.1007/s00436-011-2374-8 Ovicidal effects of a neem seed extract preparation on eggs of body and head lice [Elektronische Daten] [Heinz Mehlhorn, Fathy Abdel-Ghaffar, Khaled Al-Rasheid, Jürgen Schmidt, Margit Semmler] The eggs (nits) of head and body lice (Pediculus humanus capitis, Pediculus humanus corporis) were incubated for 5, 10, 15, 20, 30 or 45min into a neem seed extract contained in a fine shampoo formulation (e.g. Wash Away® Louse), which is known for its significant killing effects of larvae and adults of head lice. The aim of the study was to test whether the developmental stages inside the eggs are also killed after the incubation into the shampoo. It was found that an incubation time of only 5min was sufficient to prohibit any hatching of larvae, whilst 93 ± 4% of the larvae in the untreated controls of body lice hatched respectively about 76% of the controls in the case of head lice. Apparently, the neem-based shampoo blocked the aeropyles of the eggs, thus preventing the embryos of both races of lice from accessing oxygen and from releasing carbon dioxide. Thus, this product offers a complete cure from head lice upon a single treatment, if the lice (motile stages, eggs) are fully covered for about 10min. Springer-Verlag, 2011 Mehlhorn Heinz Department Zoology and Parasitology, Heinrich Heine University, 40225, Düsseldorf, Germany aut Abdel-Ghaffar Fathy Department Zoology, Cairo University, Giza, Egypt aut Al-Rasheid Khaled Department Zoology, King Saud University, Riyadh, Saudi Arabia aut Schmidt Jürgen Department Zoology and Parasitology, Heinrich Heine University, 40225, Düsseldorf, Germany aut Semmler Margit Department Zoology, Cairo University, Giza, Egypt aut Parasitology Research Springer-Verlag 109/5(2011-11-01), 1299-1302 0932-0113 109:5<1299 2011 109 436 https://doi.org/10.1007/s00436-011-2374-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00436-011-2374-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mehlhorn Heinz Department Zoology and Parasitology, Heinrich Heine University, 40225, Düsseldorf, Germany aut NATIONALLICENCE 700 1- Abdel-Ghaffar Fathy Department Zoology, Cairo University, Giza, Egypt aut NATIONALLICENCE 700 1- Al-Rasheid Khaled Department Zoology, King Saud University, Riyadh, Saudi Arabia aut NATIONALLICENCE 700 1- Schmidt Jürgen Department Zoology and Parasitology, Heinrich Heine University, 40225, Düsseldorf, Germany aut NATIONALLICENCE 700 1- Semmler Margit Department Zoology, Cairo University, Giza, Egypt aut NATIONALLICENCE 773 0- Parasitology Research Springer-Verlag 109/5(2011-11-01), 1299-1302 0932-0113 109:5<1299 2011 109 436 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer