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Susceptibility of gypsy moth larvae toLymantria spp. nuclear-and cytoplasmic-polyhedrosis viruses
Authors:A Magnoler
Institution:(1) Stazione Sperimentale del Sughero, 07029 Tempio Pausania, Sassari, Italia
Abstract:SevenLymantria spp. viruses from widely separated sources were used in a screening test for virulence. Laboratory data show thatLymantria dispar L. cytoplasmic-polyhedrosis virus of Japan, and the nuclear-polyhedrosis virus of Connecticut (U.S.A.) are more virulent than other five viruses when tested on the larvae of the gypsy moth. The nuclear-and cytoplasmic-polyhedrosis viruses ofLymantria fumida Btl. were also infectious forL. dispar larvae.
Résumé On a comparé au laboratoire la virulence de 7 souches différentes de virus des polyédroses nucléaire et cytoplasmique isolées deLymantria spp. Les essais effectués par contamination de la nourriture montrent que les chenilles deLymantria dispar L. sont sensibles à tous les virus employés. Les données permettent d’établir que la souche américaine de virus de la polyédrose nucléaire et la souche japonaise de virus cytoplasmique deL. dispar sont les plus virulentes.


Presented at the 1st meeting of the “Working Group onLymantria dispar, O. I. L. B.”, Tempio Pausania, Italy, October 16–17, 1969.
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