Premium
Pathogens of I ps amitinus : new species and comparison with I ps typographus
Author(s) -
Lukášová K.,
Holuša J.,
Turčáni M.
Publication year - 2013
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/jen.12000
Subject(s) - biology , bionomics , host (biology) , pest analysis , pathogen , ecology , botany , zoology , larva , microbiology and biotechnology
Ips amitinus and I . typographus are two serious pests of spruce in Europe, have similar bionomics and are likely to occur and meet on the same host trees. We therefore hypothesized that the two species support similar levels of similar pathogens. To test this hypothesis, we collected mature beetles from three trap trees at each of eight study sites and determined beetle numbers and pathogen infection levels. In total, 938 mature I . amitinus beetles and 3435 of I . typographus were dissected; five pathogens, as well as intestinal nematodes and endoparasitoids, were detected. The neogregarine M attesia schwenkei is reported here for the first time as a new pathogen in 9.4% of I . amitinus individuals at one site. Average infection levels of most pathogens ( C hytridiopsis typographi , G regarina typographi , M attesia schwenkei and parasitoids) were significantly higher in I . typographus than in I . amitinus . Metschnikowia typographi was confirmed only in I ps amitinus, while the microsporidium of Nosema typographi occurred only in I . typographus . Within‐season increases in G . typographi infection levels were documented in I ps amitinus .