Article CC BY 4.0
refereed
published

Infection effects of the new microsporidian species Tubulinosema suzukii on its host Drosophila suzukii

GND
1173190031
Affiliation
Julius Kühn-Institute (JKI), Institute for Biological Control, Germany
Biganski, Sarah;
Affiliation
Julius Kühn-Institute (JKI), Institute for Biological Control, Germany ; Technische Universität Darmstadt, Germany
Fückel, Sabrina;
GND
17274184X
Affiliation
Julius Kühn-Institute (JKI), Institute for Biological Control, Germany
Jehle, Johannes A.;
GND
1059093685
Affiliation
Julius Kühn-Institute (JKI), Institute for Biological Control, Germany
Kleespies, Regina G.

Microsporidian infections of insects are important natural constraints of population growth, often reducing lifespan, fecundity and fertility of the infected host. The recently discovered Tubulinosema suzukii infects Drosophila suzukii (spotted wing drosophila, SWD), an invasive pest of many fruit crops in North America and Europe. In laboratory tests, fitness effects on larval and adult stages were explored. High level infection after larval treatment caused up to 70% pupal mortality, a decreased lifespan and a 70% reduced oviposition of emerging adults in biparental infection clusters. A shift to higher proportion of female offspring compared to controls suggested a potential parthenogenetic effect after microsporidian infection. A clear sex-linkage of effects was noted; females were specifically impaired, as concluded from fecundity tests with only infected female parents. Additive effects were noted when both parental sexes were infected, whereas least effects were found with only infected male parents, though survival of males was most negatively affected if they were fed with T. suzukii spores in the adult stage. Although most negative effects on fitness parameters were revealed after larval treatment, infection of offspring was never higher than 4%, suggesting limited vertical transmission. For that reason, a self-reliant spread in natural SWD populations would probably only occur by spore release from cadavers or frass.

Files

Cite

Citation style:
Could not load citation form.

Access Statistic

Total:
Downloads:
Abtractviews:
Last 12 Month:
Downloads:
Abtractviews:

Rights

License Holder: The Author(s) 2021

Use and reproduction:

Export