What Is on the Menu When You Move Far Away? Realised Diet Niche in a Geographic-Range-Expanding Ant-Eating Spider

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00027073:_____/25:N0000059

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

What Is on the Menu When You Move Far Away? Realised Diet Niche in a Geographic-Range-Expanding Ant-Eating Spider

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

What Is on the Menu When You Move Far Away? Realised Diet Niche in a Geographic-Range-Expanding Ant-Eating Spider

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GA19-09323S" target="_blank" >GA19-09323S: Mimetické komplexy a evoluce nepřesných mimetiků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Biogeography

ISSN

0305-0270

e-ISSN

1365-2699

Svazek periodika

52

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

„e70036“

Kód UT WoS článku

001547833000001

EID výsledku v databázi Scopus

2-s2.0-105012897536