What does this research mean for the field?

Urbanization drives dietary shifts towards isopods and increases morphological similarity in the snout shape of fire salamanders, reflecting patterns of urban biotic homogenization. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

This study aims to explore the impact of urbanization on dietary and morphological traits in fire salamanders.

May 20, 2026Molecular Ecology

Urbanization Shapes Dietary Composition and Snout Morphology of Salamanders

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Authors

AMA I Marques LAL. Alarcón‐Ríos VMV.A. Mata

Discussion

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Overview

Randomized trial examines dietary and phenotypic changes in fire salamanders along urban gradients, suggesting urban biotic homogenization.

Key Points

This study aims to explore the impact of urbanization on dietary and morphological traits in fire salamanders.
Examined urban gradient effects on fire salamanders' diets and snout shapes in Porto, Portugal.
Utilized metabarcoding of faecal pellets to assess dietary diversity and composition.
Conducted geometric morphometric analyses to measure snout shape variation.
No correlation between urbanization and decline in overall dietary diversity; increased prevalence of isopods in urban diets.
Significant relationship found between dietary diversity and snout shape similarity in urbanized sites.
Dietary and morphological traits were more similar among urban sites, indicating urban biotic homogenization.

Cite This Study

Marques et al. (2026) studied this question.

synapsesocial.com/papers/6a0d4f19f03e14405aa9a56f https://doi.org/10.1111/mec.70381

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May 20, 2026Molecular Ecology

Urbanization Shapes Dietary Composition and Snout Morphology of Salamanders

View Full Paper

Ask AI

Bookmark

Authors

AMA I Marques LAL. Alarcón‐Ríos VMV.A. Mata

Discussion

Member takes

Overview

Randomized trial examines dietary and phenotypic changes in fire salamanders along urban gradients, suggesting urban biotic homogenization.

Key Points

This study aims to explore the impact of urbanization on dietary and morphological traits in fire salamanders.
Examined urban gradient effects on fire salamanders' diets and snout shapes in Porto, Portugal.
Utilized metabarcoding of faecal pellets to assess dietary diversity and composition.
Conducted geometric morphometric analyses to measure snout shape variation.
No correlation between urbanization and decline in overall dietary diversity; increased prevalence of isopods in urban diets.
Significant relationship found between dietary diversity and snout shape similarity in urbanized sites.
Dietary and morphological traits were more similar among urban sites, indicating urban biotic homogenization.

Cite This Study

Marques et al. (2026) studied this question.

synapsesocial.com/papers/6a0d4f19f03e14405aa9a56f https://doi.org/10.1111/mec.70381

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