Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean
We aimed to characterize the trophic ecology and test the hypothesis of niche overlap between four endemic and sympatric batoid species of the subtropical South Atlantic. Data were collected between 2017 and 2022 from two artisanal fishery communities in southern Brazil. Batoid stomach contents were...
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ftzenodo:oai:zenodo.org:7927311 2024-09-15T18:36:28+00:00 Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean Lemos, Liliam Freitas, Renato Bornatowski, Hugo 2023-06-19 https://doi.org/10.5281/zenodo.7927311 unknown Zenodo https://doi.org/10.5061/dryad.b5mkkwhj0 https://zenodo.org/communities/dryad https://doi.org/10.5281/zenodo.7927310 https://doi.org/10.5281/zenodo.7927311 oai:zenodo.org:7927311 info:eu-repo/semantics/openAccess MIT License https://opensource.org/licenses/MIT elasmobranch Trophic ecology Diet ray partitioning info:eu-repo/semantics/other 2023 ftzenodo https://doi.org/10.5281/zenodo.792731110.5061/dryad.b5mkkwhj010.5281/zenodo.7927310 2024-07-26T13:49:58Z We aimed to characterize the trophic ecology and test the hypothesis of niche overlap between four endemic and sympatric batoid species of the subtropical South Atlantic. Data were collected between 2017 and 2022 from two artisanal fishery communities in southern Brazil. Batoid stomach contents were identified, separated into categories, and weighed. We calculated the Levins, Pianka's, and relative dietary importance index (IRI), and performed a similarity test using PERMANOVA and the similarity percentage (SIMPER) for niche analysis. We analyzed 229 stomachs of four batoid species, 187 containing food. All species showed a narrow food niche. The most important diet items for each species were: Leptochaela serratorbita and Onuphidae for Dasyatis hypostigma Nematoda for Pseudobatos horkelii L . serratorbita and Sicyonia dorsalis for Rioraja agassizii and Achelous spinicarpus for Sympterygia bonapartii . The analyses showed (statistically significant) dissimilarity among the species' diets without significant niche overlap. This study provides ecology-feeding information for four batoid species with specialized diets composed of benthic prey species. Our results detected the absence of significant niche overlap among batoid species, suggesting other types of niche partitioning and spatiotemporal habitat variation. This information could be considered for local management plans. Excel and R Language for Statistical Computing 2022. Funding provided by: Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100005667 Award Number: Other/Unknown Material South Atlantic Ocean Zenodo |
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topic |
elasmobranch Trophic ecology Diet ray partitioning |
spellingShingle |
elasmobranch Trophic ecology Diet ray partitioning Lemos, Liliam Freitas, Renato Bornatowski, Hugo Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
topic_facet |
elasmobranch Trophic ecology Diet ray partitioning |
description |
We aimed to characterize the trophic ecology and test the hypothesis of niche overlap between four endemic and sympatric batoid species of the subtropical South Atlantic. Data were collected between 2017 and 2022 from two artisanal fishery communities in southern Brazil. Batoid stomach contents were identified, separated into categories, and weighed. We calculated the Levins, Pianka's, and relative dietary importance index (IRI), and performed a similarity test using PERMANOVA and the similarity percentage (SIMPER) for niche analysis. We analyzed 229 stomachs of four batoid species, 187 containing food. All species showed a narrow food niche. The most important diet items for each species were: Leptochaela serratorbita and Onuphidae for Dasyatis hypostigma Nematoda for Pseudobatos horkelii L . serratorbita and Sicyonia dorsalis for Rioraja agassizii and Achelous spinicarpus for Sympterygia bonapartii . The analyses showed (statistically significant) dissimilarity among the species' diets without significant niche overlap. This study provides ecology-feeding information for four batoid species with specialized diets composed of benthic prey species. Our results detected the absence of significant niche overlap among batoid species, suggesting other types of niche partitioning and spatiotemporal habitat variation. This information could be considered for local management plans. Excel and R Language for Statistical Computing 2022. Funding provided by: Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100005667 Award Number: |
format |
Other/Unknown Material |
author |
Lemos, Liliam Freitas, Renato Bornatowski, Hugo |
author_facet |
Lemos, Liliam Freitas, Renato Bornatowski, Hugo |
author_sort |
Lemos, Liliam |
title |
Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
title_short |
Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
title_full |
Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
title_fullStr |
Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
title_full_unstemmed |
Dietary and niche analyses of four endemic and sympatric batoid species of the subtropical South Atlantic Ocean |
title_sort |
dietary and niche analyses of four endemic and sympatric batoid species of the subtropical south atlantic ocean |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://doi.org/10.5281/zenodo.7927311 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://doi.org/10.5061/dryad.b5mkkwhj0 https://zenodo.org/communities/dryad https://doi.org/10.5281/zenodo.7927310 https://doi.org/10.5281/zenodo.7927311 oai:zenodo.org:7927311 |
op_rights |
info:eu-repo/semantics/openAccess MIT License https://opensource.org/licenses/MIT |
op_doi |
https://doi.org/10.5281/zenodo.792731110.5061/dryad.b5mkkwhj010.5281/zenodo.7927310 |
_version_ |
1810480137036103680 |