2023
DOI: 10.1016/j.jip.2023.107887
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Infection patterns of Harmonia axyridis (Coleoptera: Coccinellidae) by ectoparasitic microfungi and endosymbiotic bacteria

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Cited by 5 publications
(5 citation statements)
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“…In other study [9], we compared phytotoxicity of 13 colour morphs of the polymorphic H. axyridis without consistent differences. Colour morphs of H. axyridis collected in the eld in Czechia did not differ signi cantly in the parasitization rate by fungus Hesperomyces virescens and infection rate by Spiroplasma [40], while in wider center-European comparison, the melanic colour forms conspicua and spectabilis were less often parasitized than nonmelanic form novemdecimsignata [41].…”
Section: Aposematism and Toxicity: Intraspeci C Comparisonmentioning
confidence: 75%
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“…In other study [9], we compared phytotoxicity of 13 colour morphs of the polymorphic H. axyridis without consistent differences. Colour morphs of H. axyridis collected in the eld in Czechia did not differ signi cantly in the parasitization rate by fungus Hesperomyces virescens and infection rate by Spiroplasma [40], while in wider center-European comparison, the melanic colour forms conspicua and spectabilis were less often parasitized than nonmelanic form novemdecimsignata [41].…”
Section: Aposematism and Toxicity: Intraspeci C Comparisonmentioning
confidence: 75%
“…However, there was no relationship between alkaloid content and either elytra redness or carotenoid pigment concentration in either sex of eld collected H. axyridis [45]. Younger orange individuals had higher number of body zones with thalli of the parasitic fungus H. virescens than red individuals [40], but older red individuals were not protected against H. virescens [47]. We suggest that some inconsistency between various studies regarding the relationship between age and toxicity can be ascribed to differences between laboratory reared and eld collected ladybirds, although Arenas et al [19] report indistinguishable toxicity of bought and wild-caught individuals of A. bipunctata.…”
Section: Age and Toxicitymentioning
confidence: 84%
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“…However, more studies should be conducted to further reveal the mechanisms, such as investigating hatching rate of eggs normally laid after inoculation with the reproductive tract microorganisms of individuals after cold storage. In addition, a recent study has reported a significantly reduced hatchability (19%) in H. axyridis when the same female was co-infested with the fungus Hesperomyces harmoniae and the bacteria Spiroplasma compared to females infested with no or just one of the symbionts (59%) ( Awad et al, 2023 ). Hence, further investigation is warranted to elucidate the role of reproductive tract microbial communities, including fungi, in adult H. axyridis .…”
Section: Discussionmentioning
confidence: 99%
“…Furthermore, the functionality bestowed upon the host by a particular bacterium has been demonstrated to be environment-dependent (Guilhot et al, 2020). Awad et al (2023) have stressed that a below 60% egg hatchability of the laboratory-reared aphidophagous ladybirds should be of concern being affected by some factors causing non-fertilization or embryonic death. In this study, we further investigated the dynamic changes in the bacterial community within eggs produced by coldstored beetles and their F1 offspring.…”
Section: Discussionmentioning
confidence: 99%