Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds
Understanding sex differences in foraging behaviour has important implications for breeding biology and population ecology. This requires the evaluation of segregation throughout the annual cycle, including the non-breeding period. We studied the diet and foraging strategies of the Common Tern ( Ste...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Taylor & Francis
2019
|
Subjects: | |
Online Access: | https://dx.doi.org/10.6084/m9.figshare.7956227.v1 https://tandf.figshare.com/articles/Intraspecific_variability_in_isotopic_composition_of_a_monomorphic_seabird_the_Common_Tern_i_Sterna_hirundo_i_at_wintering_grounds/7956227/1 |
id |
ftdatacite:10.6084/m9.figshare.7956227.v1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.6084/m9.figshare.7956227.v1 2023-05-15T15:56:17+02:00 Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds Lamacchia, Paola Madrid, Enrique A. Mariano-Jelicich, Rocío 2019 https://dx.doi.org/10.6084/m9.figshare.7956227.v1 https://tandf.figshare.com/articles/Intraspecific_variability_in_isotopic_composition_of_a_monomorphic_seabird_the_Common_Tern_i_Sterna_hirundo_i_at_wintering_grounds/7956227/1 unknown Taylor & Francis https://dx.doi.org/10.1080/01584197.2019.1580536 https://dx.doi.org/10.6084/m9.figshare.7956227 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry dataset Dataset 2019 ftdatacite https://doi.org/10.6084/m9.figshare.7956227.v1 https://doi.org/10.1080/01584197.2019.1580536 https://doi.org/10.6084/m9.figshare.7956227 2021-11-05T12:55:41Z Understanding sex differences in foraging behaviour has important implications for breeding biology and population ecology. This requires the evaluation of segregation throughout the annual cycle, including the non-breeding period. We studied the diet and foraging strategies of the Common Tern ( Sterna hirundo ) at an intraspecific level by sampling birds during two consecutive non-breeding periods in Punta Rasa, Buenos Aires Province, Argentina. Blood samples were taken for sex determination and carbon and nitrogen stable isotope analysis. No isotopic difference was observed between years, but higher isotopic values occurred during late non-breeding period. Carbon and nitrogen isotopic values were similar between sexes; however, differences were observed in standard ellipse analyses, considered to represent isotopic niches. Even though the Bayesian ellipse areas overlapped, females showed wider isotopic niches throughout the non-breeding period. This could be related to different feeding strategies, foraging areas or migratory stopover sites at either intraspecific or individual levels. Diet contributions of different prey categories estimated through mixing model analyses suggested a higher contribution of estuarine fish than of marine pelagic species. These results highlight the importance of stable isotope analyses as a complementary methodology to traditional diet studies, particularly during the non-breeding period. Dataset Common tern Sterna hirundo DataCite Metadata Store (German National Library of Science and Technology) Argentina |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry |
spellingShingle |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry Lamacchia, Paola Madrid, Enrique A. Mariano-Jelicich, Rocío Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
topic_facet |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry |
description |
Understanding sex differences in foraging behaviour has important implications for breeding biology and population ecology. This requires the evaluation of segregation throughout the annual cycle, including the non-breeding period. We studied the diet and foraging strategies of the Common Tern ( Sterna hirundo ) at an intraspecific level by sampling birds during two consecutive non-breeding periods in Punta Rasa, Buenos Aires Province, Argentina. Blood samples were taken for sex determination and carbon and nitrogen stable isotope analysis. No isotopic difference was observed between years, but higher isotopic values occurred during late non-breeding period. Carbon and nitrogen isotopic values were similar between sexes; however, differences were observed in standard ellipse analyses, considered to represent isotopic niches. Even though the Bayesian ellipse areas overlapped, females showed wider isotopic niches throughout the non-breeding period. This could be related to different feeding strategies, foraging areas or migratory stopover sites at either intraspecific or individual levels. Diet contributions of different prey categories estimated through mixing model analyses suggested a higher contribution of estuarine fish than of marine pelagic species. These results highlight the importance of stable isotope analyses as a complementary methodology to traditional diet studies, particularly during the non-breeding period. |
format |
Dataset |
author |
Lamacchia, Paola Madrid, Enrique A. Mariano-Jelicich, Rocío |
author_facet |
Lamacchia, Paola Madrid, Enrique A. Mariano-Jelicich, Rocío |
author_sort |
Lamacchia, Paola |
title |
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
title_short |
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
title_full |
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
title_fullStr |
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
title_full_unstemmed |
Intraspecific variability in isotopic composition of a monomorphic seabird, the Common Tern ( Sterna hirundo ), at wintering grounds |
title_sort |
intraspecific variability in isotopic composition of a monomorphic seabird, the common tern ( sterna hirundo ), at wintering grounds |
publisher |
Taylor & Francis |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.7956227.v1 https://tandf.figshare.com/articles/Intraspecific_variability_in_isotopic_composition_of_a_monomorphic_seabird_the_Common_Tern_i_Sterna_hirundo_i_at_wintering_grounds/7956227/1 |
geographic |
Argentina |
geographic_facet |
Argentina |
genre |
Common tern Sterna hirundo |
genre_facet |
Common tern Sterna hirundo |
op_relation |
https://dx.doi.org/10.1080/01584197.2019.1580536 https://dx.doi.org/10.6084/m9.figshare.7956227 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.7956227.v1 https://doi.org/10.1080/01584197.2019.1580536 https://doi.org/10.6084/m9.figshare.7956227 |
_version_ |
1766391742912790528 |