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Trophic assessment of three sympatric batoid species in the Southern Gulf of California

The competitive exclusion principle establishes that the coexistence of closely related species requires a certain degree of resource partitioning. However, populations have individuals with different morphological or behavioral traits (e.g., maturity stages, sexes, temporal or spatial segregation)....

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Autores principales: Enríquez-García, Arturo Bell, Cruz-Escalona, Víctor Hugo, Carriquiry, José D., Ehemann, Nicolás R., Mejía-Falla, Paola A., Marín-Enríquez, Emigdio, Treinen-Crespo, Christina, Vélez-Tacuri, José R., Navia, Andrés F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10519201/
https://www.ncbi.nlm.nih.gov/pubmed/37753172
http://dx.doi.org/10.7717/peerj.16117
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author Enríquez-García, Arturo Bell
Cruz-Escalona, Víctor Hugo
Carriquiry, José D.
Ehemann, Nicolás R.
Mejía-Falla, Paola A.
Marín-Enríquez, Emigdio
Treinen-Crespo, Christina
Vélez-Tacuri, José R.
Navia, Andrés F.
author_facet Enríquez-García, Arturo Bell
Cruz-Escalona, Víctor Hugo
Carriquiry, José D.
Ehemann, Nicolás R.
Mejía-Falla, Paola A.
Marín-Enríquez, Emigdio
Treinen-Crespo, Christina
Vélez-Tacuri, José R.
Navia, Andrés F.
author_sort Enríquez-García, Arturo Bell
collection PubMed
description The competitive exclusion principle establishes that the coexistence of closely related species requires a certain degree of resource partitioning. However, populations have individuals with different morphological or behavioral traits (e.g., maturity stages, sexes, temporal or spatial segregation). This interaction often results in a multi-level differentiation in food preferences and habits. We explored such resource partitioning between and within three batoid species: Hypanus dipterurus, Narcine entemedor, and Rhinoptera steindachneri in the southern Gulf of California, Mexico, using a combination of stomach content (excluding R. steindachneri) and stable isotope analyses. We found a clear differentiation between H. dipterurus and N. entemedor, where the latter exhibited more benthic habitats, supported by a greater association to infaunal prey and higher δ(13)C values. Though the degree and patterns of intra-specific segregation varied among species, there was a notable differentiation in both sex and stage of maturity, corresponding to changes in specialization (i.e., isotopic niche breadth) or trophic spectrum (varying prey importance and isotopic values per group). This work is a promising step towards understanding the dietary niche dynamics of these species in a potentially important feeding area within the southern Gulf of California, as well as the biological and ecological mechanisms that facilitate their coexistence.
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spelling pubmed-105192012023-09-26 Trophic assessment of three sympatric batoid species in the Southern Gulf of California Enríquez-García, Arturo Bell Cruz-Escalona, Víctor Hugo Carriquiry, José D. Ehemann, Nicolás R. Mejía-Falla, Paola A. Marín-Enríquez, Emigdio Treinen-Crespo, Christina Vélez-Tacuri, José R. Navia, Andrés F. PeerJ Ecology The competitive exclusion principle establishes that the coexistence of closely related species requires a certain degree of resource partitioning. However, populations have individuals with different morphological or behavioral traits (e.g., maturity stages, sexes, temporal or spatial segregation). This interaction often results in a multi-level differentiation in food preferences and habits. We explored such resource partitioning between and within three batoid species: Hypanus dipterurus, Narcine entemedor, and Rhinoptera steindachneri in the southern Gulf of California, Mexico, using a combination of stomach content (excluding R. steindachneri) and stable isotope analyses. We found a clear differentiation between H. dipterurus and N. entemedor, where the latter exhibited more benthic habitats, supported by a greater association to infaunal prey and higher δ(13)C values. Though the degree and patterns of intra-specific segregation varied among species, there was a notable differentiation in both sex and stage of maturity, corresponding to changes in specialization (i.e., isotopic niche breadth) or trophic spectrum (varying prey importance and isotopic values per group). This work is a promising step towards understanding the dietary niche dynamics of these species in a potentially important feeding area within the southern Gulf of California, as well as the biological and ecological mechanisms that facilitate their coexistence. PeerJ Inc. 2023-09-22 /pmc/articles/PMC10519201/ /pubmed/37753172 http://dx.doi.org/10.7717/peerj.16117 Text en © 2023 Enríquez-García et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Ecology
Enríquez-García, Arturo Bell
Cruz-Escalona, Víctor Hugo
Carriquiry, José D.
Ehemann, Nicolás R.
Mejía-Falla, Paola A.
Marín-Enríquez, Emigdio
Treinen-Crespo, Christina
Vélez-Tacuri, José R.
Navia, Andrés F.
Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title_full Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title_fullStr Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title_full_unstemmed Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title_short Trophic assessment of three sympatric batoid species in the Southern Gulf of California
title_sort trophic assessment of three sympatric batoid species in the southern gulf of california
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10519201/
https://www.ncbi.nlm.nih.gov/pubmed/37753172
http://dx.doi.org/10.7717/peerj.16117
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