DNA sequence-based biodiversity and interaction ecology

Tiede, Julia; Keller, Alexander; Eitzinger, Bernhard

doi:10.1016/j.baae.2021.06.008

Cited by 2 publications

(3 citation statements)

References 31 publications

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“…Recent research on the gut microbiota has largely been driven by the advent of modern sequence-based techniques [268,269]. Although these are powerful and valuable tools, they have limitations.…”

Section: False Negativesmentioning

confidence: 99%

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

Rosenberg

Zilber‐Rosenberg

2021

Microorganisms

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Microbiomes are transmitted between generations by a variety of different vertical and/or horizontal modes, including vegetative reproduction (vertical), via female germ cells (vertical), coprophagy and regurgitation (vertical and horizontal), physical contact starting at birth (vertical and horizontal), breast-feeding (vertical), and via the environment (horizontal). Analyses of vertical transmission can result in false negatives (failure to detect rare microbes) and false positives (strain variants). In humans, offspring receive most of their initial gut microbiota vertically from mothers during birth, via breast-feeding and close contact. Horizontal transmission is common in marine organisms and involves selectivity in determining which environmental microbes can colonize the organism’s microbiome. The following arguments are put forth concerning accurate microbial transmission: First, the transmission may be of functions, not necessarily of species; second, horizontal transmission may be as accurate as vertical transmission; third, detection techniques may fail to detect rare microbes; lastly, microbiomes develop and reach maturity with their hosts. In spite of the great variation in means of transmission discussed in this paper, microbiomes and their functions are transferred from one generation of holobionts to the next with fidelity. This provides a strong basis for each holobiont to be considered a unique biological entity and a level of selection in evolution, largely maintaining the uniqueness of the entity and conserving the species from one generation to the next.

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Section: False Negativesmentioning

confidence: 99%

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

Rosenberg

Zilber‐Rosenberg

2021

Microorganisms

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“…To link the impact of urbanization on communities of pollinator bees and predator wasps, we need a better understanding of how their interactions, for example, feeding interactions are affected. Novel techniques, such as DNA metabarcoding are able to identify food resources at species‐level, thereby allowing to reconstruct detailed trophic interactions networks (Tiede et al, 2021). DNA metabarcoding is particularly powerful, when morphological identification of food resources is either very time‐consuming and requiring expert knowledge (such as for pollen) or not possible because hard remains are lacking (such as in faeces).…”

Section: Introductionmentioning

confidence: 99%

“…Novel techniques, such as DNA metabarcoding are able to identify food resources at species-level, thereby allowing to reconstruct detailed trophic interactions networks (Tiede et al, 2021).…”

mentioning

confidence: 99%

Metabarcoding of trap nests reveals differential impact of urbanization on cavity‐nesting bee and wasp communities

Dürrbaum

Fornoff

Scherber³

et al. 2023

Molecular Ecology

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Urbanization is affecting arthropod communities worldwide, for example by changing the availability of food resources. However, the strength and direction of a community's response is species‐specific and depends on species' trophic level. Here, we investigated interacting species at different trophic levels in nests of cavity‐nesting bees and wasps along two urbanization gradients in four German cities using trap nests. We analysed bee and wasp diversity and their trophic interaction partners by metabarcoding the DNA of bee pollen and preyed arthropods found in wasp nests. We found that the pollen richness increased with increasing distance from city centres and at sites characterized by a high percentage of impervious and developed surface, while the richness of pollinators was unaffected by urbanization. In contrast, species richness of wasps, but not their arthropod prey, was highest at sites with low levels of urbanization. However, the community structure of wasp prey changed with urbanization at both local and regional scales. Throughout the study area, the community of wasps consisted of specialists, while bee species were generalists. Our results suggest that Hymenoptera and their food resources are negatively affected by increasing urbanization. However, to understand distribution patterns of both, wasps and bees in urban settings other factors besides food availability should be considered.

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DNA sequence-based biodiversity and interaction ecology

Cited by 2 publications

References 31 publications

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

Reconstitution and Transmission of Gut Microbiomes and Their Genes between Generations

Metabarcoding of trap nests reveals differential impact of urbanization on cavity‐nesting bee and wasp communities

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