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Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata

Abstract. Interactions between algae and herbivores can be affected by various factors, such as seasonality and habitat structure. Among herbivores inhabiting marine systems, species of the order Patellogastropoda are considered key organisms in many rocky coasts of the world. Nacella species are on...

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Autores principales: Rosenfeld, Sebastián, Marambio, Johanna, Ojeda, Jaime, Juan Pablo Rodríguez, González-Wevar, Claudio, Gerard, Karin, Tamara Contador, Pizarro, Gemita, Mansilla, Andrés
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5904503/
https://www.ncbi.nlm.nih.gov/pubmed/29670417
http://dx.doi.org/10.3897/zookeys.738.21175
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author Rosenfeld, Sebastián
Marambio, Johanna
Ojeda, Jaime
Juan Pablo Rodríguez,
González-Wevar, Claudio
Gerard, Karin
Tamara Contador,
Pizarro, Gemita
Mansilla, Andrés
author_facet Rosenfeld, Sebastián
Marambio, Johanna
Ojeda, Jaime
Juan Pablo Rodríguez,
González-Wevar, Claudio
Gerard, Karin
Tamara Contador,
Pizarro, Gemita
Mansilla, Andrés
author_sort Rosenfeld, Sebastián
collection PubMed
description Abstract. Interactions between algae and herbivores can be affected by various factors, such as seasonality and habitat structure. Among herbivores inhabiting marine systems, species of the order Patellogastropoda are considered key organisms in many rocky coasts of the world. Nacella species are one of the most dominant macro-herbivores on the rocky shores of the sub-Antarctic ecoregion of Magellan. However, the importance of its key role must be associated with its trophic ecology. The objective of this work was to evaluate spatial and temporal variabilities in the dietary composition of two intertidal Nacella species, considering grazing on macro- (macroalgae) and microscopic (periphyton) food. The composition of periphyton and the availability of macroalgae in the winter and summer seasons were examined at two localities of the Magellanic province, alongside the gut contents of N. magellanica and N. deaurata. The dietary composition differed between the two Nacella species, as well as between seasons and locations. The differences observed in the diet of the two species of Nacella may be mainly due to their respective distributions in the intertidal zone. Both species presented a generalist strategy of grazing, which is relationed to the seasonality of micro- and macroalgae availability and to the variability of the assemblages between the localities. This research was the first to perform a detailed study of the diet of intertidal Nacella species.
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spelling pubmed-59045032018-04-18 Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata Rosenfeld, Sebastián Marambio, Johanna Ojeda, Jaime Juan Pablo Rodríguez, González-Wevar, Claudio Gerard, Karin Tamara Contador, Pizarro, Gemita Mansilla, Andrés Zookeys Research Article Abstract. Interactions between algae and herbivores can be affected by various factors, such as seasonality and habitat structure. Among herbivores inhabiting marine systems, species of the order Patellogastropoda are considered key organisms in many rocky coasts of the world. Nacella species are one of the most dominant macro-herbivores on the rocky shores of the sub-Antarctic ecoregion of Magellan. However, the importance of its key role must be associated with its trophic ecology. The objective of this work was to evaluate spatial and temporal variabilities in the dietary composition of two intertidal Nacella species, considering grazing on macro- (macroalgae) and microscopic (periphyton) food. The composition of periphyton and the availability of macroalgae in the winter and summer seasons were examined at two localities of the Magellanic province, alongside the gut contents of N. magellanica and N. deaurata. The dietary composition differed between the two Nacella species, as well as between seasons and locations. The differences observed in the diet of the two species of Nacella may be mainly due to their respective distributions in the intertidal zone. Both species presented a generalist strategy of grazing, which is relationed to the seasonality of micro- and macroalgae availability and to the variability of the assemblages between the localities. This research was the first to perform a detailed study of the diet of intertidal Nacella species. Pensoft Publishers 2018-02-19 /pmc/articles/PMC5904503/ /pubmed/29670417 http://dx.doi.org/10.3897/zookeys.738.21175 Text en Sebastián Rosenfeld, Johanna Marambio, Jaime Ojeda, Juan Pablo Rodríguez, Claudio González-Wevar, Karin Gerard, Tamara Contador, Gemita Pizarro, Andrés Mansilla http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Rosenfeld, Sebastián
Marambio, Johanna
Ojeda, Jaime
Juan Pablo Rodríguez,
González-Wevar, Claudio
Gerard, Karin
Tamara Contador,
Pizarro, Gemita
Mansilla, Andrés
Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title_full Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title_fullStr Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title_full_unstemmed Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title_short Trophic ecology of two co-existing Sub-Antarctic limpets of the genus Nacella: spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata
title_sort trophic ecology of two co-existing sub-antarctic limpets of the genus nacella: spatio-temporal variation in food availability and diet composition of nacella magellanica and n. deaurata
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5904503/
https://www.ncbi.nlm.nih.gov/pubmed/29670417
http://dx.doi.org/10.3897/zookeys.738.21175
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