Temperate snake community in South America : is diet determined by phylogeny or ecology?

Communities are complex and dynamic systems that change with time. The first attempts to explain how they were structured involve contemporary phenomena like ecological interactions between species (e.g., competition and predation) and led to the competition-predation hypothesis. Recently, the deep...

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Autores principales: Bellini, Gisela Paola, Giraudo, Alejandro Raúl, Arzamendia, Vanesa, Etchepare, Eduardo Gabriel
Formato: Artículo
Lenguaje:Inglés
Publicado: Public Library of Science 2021
Materias:
Temperate Snake Community
Diet
South America
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28602
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28602
record_format dspace
spelling I48-R184-123456789-286022025-03-06T11:01:38Z Temperate snake community in South America : is diet determined by phylogeny or ecology? Bellini, Gisela Paola Giraudo, Alejandro Raúl Arzamendia, Vanesa Etchepare, Eduardo Gabriel Temperate Snake Community Diet South America Communities are complex and dynamic systems that change with time. The first attempts to explain how they were structured involve contemporary phenomena like ecological interactions between species (e.g., competition and predation) and led to the competition-predation hypothesis. Recently, the deep history hypothesis has emerged, which suggests that profound differences in the evolutionary history of organisms resulted in a number of ecological features that remain largely on species that are part of existing communities. Nevertheless, both phylogenetic structure and ecological interactions can act together to determine the structure of a community. Because diet is one of the main niche axes, in this study we evaluated, for the first time, the impact of ecological and phylogenetic factors on the diet of Neotropical snakes from the subtropical-temperate region of South America. Additionally, we studied their relationship with morphological and environmental aspects to understand the natural history and ecology of this community. A canonical phylogenetical ordination analysis showed that phylogeny explained most of the variation in diet, whereas ecological characters explained very little of this variation. Furthermore, some snakes that shared the habitat showed some degree of diet convergence, in accordance with the competition-predation hypothesis, although phylogeny remained the major determinant in structuring this community. The clade with the greatest variability was the subfamily Dipsadinae, whose members had a very different type of diet, based on soft-bodied invertebr,ates. Our results are consistent with the deep history hypothesis, and we suggest that the community under study has a deep phylogenetic effect that explains most of the variation in the diet. 2021-09-08T13:00:54Z 2021-09-08T13:00:54Z 2015 Artículo Bellini, Gisela Paola, et al., 2015.Temperate snake community in South America: is diet determined by phylogeny or ecology?. Plos One. San Francisco: Public Library of Science, vol. 10, no 5, p.1-15. ISSN 1932 6203. http://repositorio.unne.edu.ar/handle/123456789/28602 eng openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Public Library of Science Plos One, 2015, vol. 10, no 5, p.1-15.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Temperate Snake Community
Diet
South America
spellingShingle Temperate Snake Community
Diet
South America
Bellini, Gisela Paola
Giraudo, Alejandro Raúl
Arzamendia, Vanesa
Etchepare, Eduardo Gabriel
Temperate snake community in South America : is diet determined by phylogeny or ecology?
topic_facet Temperate Snake Community
Diet
South America
description Communities are complex and dynamic systems that change with time. The first attempts to explain how they were structured involve contemporary phenomena like ecological interactions between species (e.g., competition and predation) and led to the competition-predation hypothesis. Recently, the deep history hypothesis has emerged, which suggests that profound differences in the evolutionary history of organisms resulted in a number of ecological features that remain largely on species that are part of existing communities. Nevertheless, both phylogenetic structure and ecological interactions can act together to determine the structure of a community. Because diet is one of the main niche axes, in this study we evaluated, for the first time, the impact of ecological and phylogenetic factors on the diet of Neotropical snakes from the subtropical-temperate region of South America. Additionally, we studied their relationship with morphological and environmental aspects to understand the natural history and ecology of this community. A canonical phylogenetical ordination analysis showed that phylogeny explained most of the variation in diet, whereas ecological characters explained very little of this variation. Furthermore, some snakes that shared the habitat showed some degree of diet convergence, in accordance with the competition-predation hypothesis, although phylogeny remained the major determinant in structuring this community. The clade with the greatest variability was the subfamily Dipsadinae, whose members had a very different type of diet, based on soft-bodied invertebr,ates. Our results are consistent with the deep history hypothesis, and we suggest that the community under study has a deep phylogenetic effect that explains most of the variation in the diet.
format Artículo
author Bellini, Gisela Paola
Giraudo, Alejandro Raúl
Arzamendia, Vanesa
Etchepare, Eduardo Gabriel
author_facet Bellini, Gisela Paola
Giraudo, Alejandro Raúl
Arzamendia, Vanesa
Etchepare, Eduardo Gabriel
author_sort Bellini, Gisela Paola
title Temperate snake community in South America : is diet determined by phylogeny or ecology?
title_short Temperate snake community in South America : is diet determined by phylogeny or ecology?
title_full Temperate snake community in South America : is diet determined by phylogeny or ecology?
title_fullStr Temperate snake community in South America : is diet determined by phylogeny or ecology?
title_full_unstemmed Temperate snake community in South America : is diet determined by phylogeny or ecology?
title_sort temperate snake community in south america : is diet determined by phylogeny or ecology?
publisher Public Library of Science
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28602
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