Non-Sporeforming Bacteria Pathogenic to Insects: Incidence and Mechanisms

Composition of Acridid gut bacterial communities as revealed by 16S rRNA gene analysis

“…There is a paradox. While beneficial under certain circumstances, gut bacteria may also be opportunistically pathogenic (Lysenko, 1985). Thus the possibility that they can offer protection against pathogens may mean that they are tolerated to the extent that they are needed.…”

Insecticidal bacteria isolated from predatory larvae of the antlion species Myrmeleon bore (Neuroptera: Myrmeleontidae)

“…For example, many B. thuringiensis, which are used as biopesticides, have been isolated from insect carcasses (Bernhard et al, 1997). However, taking into consideration a report by Lysenko (1985) which reported that many inhabitants of insect guts are facultatively pathogenic, the frequent isolation of insecticidal bacteria from the living larvae of M. bore seems to suggest their preference in this environment.…”

Identification of Enterococcus mundtii as a pathogenic agent involved in the “flacherie” disease in Bombyx mori L. larvae reared on artificial diet

“…After repeated encountering of flabby larvae in artificial diet rearing, using CRA-API's diet containing chloramphenicol, which occurred both in Padua and in other European labs, we focused our efforts on isolation of possible etiological agent for the so-called ''flacherie'' disease. Larvae showing symptoms of retarded growth, cessation of feeding, flaccidity, loss of body lustre, sluggishness and dysentery can be affected by bacteria or viruses (Aizawa et al, 1964;Tanada and Kaya, 1993;Lysenko, 1958) or even by two microbial agents (Manimegalai, 2009;Deseö Kovács and Rovesti, 1992).…”