Mette Marie Busck's research while affiliated with Aarhus University and other places

Publications (6)

Article
Full-text available
Host symbiont interactions may form obligatory or facultative associations that are context dependent. Long-term studies on microbiome composition from wild populations should assess the temporal and spatial dynamics of host-microbe associations. We characterized the temporal and spatial variation in the bacterial microbiome composition in six popu...
Article
Social spiders of the species Stegodyphus dumicola live in communal nests with hundreds of individuals and are characterized by extremely low-species wide genetic diversity. The lack of genetic diversity in combination with group-living imposes a potential threat for infection by pathogens. We therefore proposed that specific microbial symbionts in...
Article
Full-text available
Some social arthropods engage in mutualistic symbiosis with antimicrobial compound-producing microorganisms that provide protection against pathogens. Social spiders live in communal nests and contain specific endosymbionts with unknown function. Bacteria are also found on the spiders’ surface, including prevalent staphylococci, which may have prot...
Preprint
Full-text available
Some social arthropods engage in mutualistic symbiosis with antimicrobial compound-producing microorganisms that provide protection against pathogens. Social spiders live in communal nests and contain specific endosymbionts with unknown function. Bacteria are also found on the spiders' surface, including prevalent staphylococci, which may have prot...
Article
Full-text available
Social spiders have remarkably low species-wide genetic diversities, potentially increasing the relative importance of microbial symbionts for host fitness. Here we explore the bacterial microbiomes of three species of social Stegodyphus (S. dumicola, S. mimosarum, and S. sarasinorum), within and between populations, using 16S rRNA gene amplicon se...
Article
Sex allocation theory predicts that when sons and daughters have different reproductive values, parents should adjust offspring sex ratio towards the sex with the higher fitness return. Haplo-diploid species directly control offspring sex ratio, but species with chromosomal sex determination (CSD) were presumed to be constrained by Mendelian segreg...

Citations

... Our results provide no evidence for a role of specific symbionts in shaping the observed metabolite profile pattern. The microbiomes of the S. dumicola spiders sampled along the climatic gradient showed no significant population-specific pattern (Figure 2), which is consistent with previous studies of S. dumicola spiders collected over even larger geographic distances (Busck et al., 2020(Busck et al., , 2022. The bacterial genera that dominated S. dumicola's microbiome in this study are identical to those previously found (Borrelia, Diplorickettsia, and Mycoplasma), and are so far not known to provide or enhance thermal tolerance in hosts. ...
... Proteobacteria are one of the most dominant phyla found in soil, phyllosphere, and avian nest materials (Janssen, 2006;Vorholt, 2012;Navarro-Noya et al., 2014). Actinobacteria, are common in the nests of social arthropods (Madden et al., 2013;Otani et al., 2016;Nazipi et al., 2021), such as termites (Syntermes wheeleri) (Guimaraes et al., 2020). Additionally, Actinobacteria are considered to be the second-most abundant bacterial phylum in the gut of higher termites and occurs primarily in those that feed on humic matter (Hervé et al., 2020). ...
... In our study, we found relatively more nests on Acacia mellifera and Combretum imberbe, which are both known for producing antimicrobial compounds [60][61][62][63]. Alternatively, the host plant could facilitate beneficial conditions for microorganisms that produce antimicrobial compounds or other metabolites beneficial to the spiders [58,59,64]. This poses the interesting question of whether spiders can acquire particular beneficial microbial nest symbionts by choice of host plant, or by integrating specific plant material into the nest. ...
... The pathogen may therefore represent a potential source of infection to wild predatory mites if infected P. persimilis mites are released for biological control. Interestingly, A. phytoseiuli has also been found in three social spiders collected in South Africa, although it does not represent a core component of the microbiota of those species (22). Because the similarity between this Acaricomes strain and the DSM14247 A. phytoseiuli strain was 98%, pathogenic A. phytoseiuli may also to spread to spider host populations. ...
... mating system, female-biased sex ratio, and frequent extinction-colonization events has severe consequences for population genetic diversity and structure: genetic diversity is extremely low within populations, and despite restricted gene flow between populations, population extinctionrecolonization causes remarkably low genetic divergence among populations (Lubin and Bilde 2007;Vanthournout et al. 2018;Settepani et al. 2014Settepani et al. , 2017Bechsgaard et al. 2019). This type of host metapopulation dynamics may have implications for host-microbiome dynamics (Mihaljevic 2012;Miller et al. 2018), but potentially also for the spatial distribution of the microbiome composition. ...