In October 1941, Levinson joined the Malaria Research Station of the Hebrew University (director: Prof. Dr.
Gideon Mer) in Rosh Pina (Upper Galilee, Palestine) and performed examinations of the mosquito species
Anopheles saccharovi, Anopheles sergentii and
Anopheles superpictus for availability of the sporozoans
Plasmodium falciparum,
Plasmodium malariae,
Plasmodium vivax or
Plasmodium ovale, inhabiting the blood-sucking females of the above mosquito species. He also investigated the suppression of larval populations of Anopheline species in their aquatic breeding sites by either biological, physical or chemical measures. At the Hebrew University of Jerusalem, Levinson studied chemistry, microbiology, zoology as well as entomology, and also investigated the development of resistance towards DDT and other organic insecticides in cyclorrhaphous fly species, wherefore he received the degree of M.Sc. in 1954. Later, he performed advanced research on the nutritional requirements and metabolism of
Musca domestica var.
vicina (Cyclorrhapha, Diptera) under the supervision of Professors E.D. Bergmann and G. Fraenkel, and was awarded the degree of Ph.D. from the Hebrew University of Jerusalem in 1959. From 1959 until 1961 he worked with Sir
Vincent Brian Wigglesworth on the function of dietary sterols in holometabolic and hemimetabolic insect species, at the University of Cambridge (England). In 1964 he became senior lecturer, in 1967 associate professor of comparative biochemistry and physiology at the
Hebrew University of Jerusalem. Between 1962 and 1970, H. Levinson taught invertebrate physiology and biochemistry, was head of the Laboratory of Insect Physiology and supervised about a dozen M.Sc. and Ph.D. candidates, at the Hebrew University of Jerusalem. Between 1970 and 1971, he was visiting professor at the Zoological Institute of the
Johann Wolfgang Goethe-University in Frankfurt/Main. Levinson published more than 140 scientific contributions and introduced the terms insectistasis and acaristasis to applied entomology. By definition, insectistasis and acaristasis (Greek, stasis = standstill) refer to a state, wherein the population density of harmful species is suppressed to the extent of gaining harvested plants, ripe fruits and stored seeds devoid of significant damage or loss == Awards ==