What Is on the Menu When You Move Far Away? Realised Diet Niche in a Geographic-Range-Expanding Ant-Eating Spider
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00144433" target="_blank" >RIV/00216224:14310/25:00144433 - isvavai.cz</a>
Alternative codes found
RIV/00027073:_____/25:N0000059
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/10.1111/jbi.70036" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/jbi.70036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jbi.70036" target="_blank" >10.1111/jbi.70036</a>
Alternative languages
Result language
angličtina
Original language name
What Is on the Menu When You Move Far Away? Realised Diet Niche in a Geographic-Range-Expanding Ant-Eating Spider
Original language description
Aim: Diet represents a fundamental dimension in a species' ecological niche, helping to define where it occurs over space. This is especially apparent in diet specialists, which can be restricted by the limited range of resources they are able to use. Specialists are therefore rarely involved in cases of geographic range expansion, although this may occur as exemplified by the myrmecophagous spider Zodarion rubidum Simon, 1914, which spread from southern France to the rest of Europe in a few decades. In this study, we assessed the trophic niche of this specialist predator over its range. Specifically, we investigated its realised diet niche on a broad spatial scale, using dietary metabarcoding on field-collected individuals. Location: Thirty-seven localities throughout Europe and North America. Taxon: Zodarion rubidum Simon, 1914 (Araneae: Zodariidae). Methods: We first compared diet compositions between populations using an ordination method. We then interpolated the phylogenetic diversity of preyed items over space as a measure of diet niche breadth, as well as the probability of being preyed upon by Z. rubidum in the study area for the most consumed prey, using ordinary kriging. Finally, we tested for a spatial trend in diet breadth using a linear model. Results: We found that Z. rubidum remains strictly myrmecophagous over space; its populations have similar diets; and its diet breadth is consistent across the distribution range. Interestingly, Z. rubidum tends to feed more on Myrmicinae (Tetramorium ants) towards north-eastern Europe, suggesting that it has a broader fundamental diet niche than expected. Main Conclusion: Overall, Z. rubidum does not seem to be restricted by its diet specialisation along its geographic range expansion.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
<a href="/en/project/GA19-09323S" target="_blank" >GA19-09323S: Mimetic complexes and the evolution of inaccurate mimics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Biogeography
ISSN
0305-0270
e-ISSN
1365-2699
Volume of the periodical
52
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
„e70036“
UT code for WoS article
001547833000001
EID of the result in the Scopus database
2-s2.0-105012897536