Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary
The objective of the present study was to evaluate the use of sagitta otolith microchemistry (Sr:Ca, Ba:Ca ratios) as habitat indicator of Anchoa tricolor between the estuary and the adjacent continental shelf. We analyzed 162 specimens of A. tricolor in the Paranaguá Estuarine Complex (Brazil), and...
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2017
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oai:scielo:S0718-560X20170002000202017-07-27Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuaryCarvalho,Barbara Maichak deVolpedo,Alejandra VaninaVaz-dos-Santos,André MartinsSpach,Henry Louis Anchoa tricolor Engraulidae life cycle habitat otolith microchemistry subtropical Brazil The objective of the present study was to evaluate the use of sagitta otolith microchemistry (Sr:Ca, Ba:Ca ratios) as habitat indicator of Anchoa tricolor between the estuary and the adjacent continental shelf. We analyzed 162 specimens of A. tricolor in the Paranaguá Estuarine Complex (Brazil), and salinity and rainfall data. The biological and environmental data were grouped into sectors (internal, intermediate, and external) and periods (early and late wet, and dry periods). The concentrations of Ca, Ba and Sr were determined using an ICP-OES. The Sr:Ca ratio indicated the existence of two groups, probably from different origins, that use the estuary at the same time, but occupying different sectors of the estuary. The Ba:Ca ratio did not differentiate the groups as to the use of estuary, but rather revealed low values, suggesting that this species does not use freshwater environments. However, this ratio showed a high variation in the wet period, indicating a greater availability of barium in the estuarine regions affected by the river discharge. Considering our results, it is possible to classify A. tricolor as an estuarine migrant species. Also, the Sr:Ca and Ba:Ca ratios can be indicative of the habitat use in a subtropical estuary.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.45 n.2 20172017-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000200020en10.3856/vol45-issue2-fulltext-20 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Anchoa tricolor Engraulidae life cycle habitat otolith microchemistry subtropical Brazil |
| spellingShingle |
Anchoa tricolor Engraulidae life cycle habitat otolith microchemistry subtropical Brazil Carvalho,Barbara Maichak de Volpedo,Alejandra Vanina Vaz-dos-Santos,André Martins Spach,Henry Louis Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| description |
The objective of the present study was to evaluate the use of sagitta otolith microchemistry (Sr:Ca, Ba:Ca ratios) as habitat indicator of Anchoa tricolor between the estuary and the adjacent continental shelf. We analyzed 162 specimens of A. tricolor in the Paranaguá Estuarine Complex (Brazil), and salinity and rainfall data. The biological and environmental data were grouped into sectors (internal, intermediate, and external) and periods (early and late wet, and dry periods). The concentrations of Ca, Ba and Sr were determined using an ICP-OES. The Sr:Ca ratio indicated the existence of two groups, probably from different origins, that use the estuary at the same time, but occupying different sectors of the estuary. The Ba:Ca ratio did not differentiate the groups as to the use of estuary, but rather revealed low values, suggesting that this species does not use freshwater environments. However, this ratio showed a high variation in the wet period, indicating a greater availability of barium in the estuarine regions affected by the river discharge. Considering our results, it is possible to classify A. tricolor as an estuarine migrant species. Also, the Sr:Ca and Ba:Ca ratios can be indicative of the habitat use in a subtropical estuary. |
| author |
Carvalho,Barbara Maichak de Volpedo,Alejandra Vanina Vaz-dos-Santos,André Martins Spach,Henry Louis |
| author_facet |
Carvalho,Barbara Maichak de Volpedo,Alejandra Vanina Vaz-dos-Santos,André Martins Spach,Henry Louis |
| author_sort |
Carvalho,Barbara Maichak de |
| title |
Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| title_short |
Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| title_full |
Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| title_fullStr |
Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| title_full_unstemmed |
Use of otolith microchemistry as habitat indicator of Anchoa tricolor (Spix & Agassiz, 1829) in a subtropical estuary |
| title_sort |
use of otolith microchemistry as habitat indicator of anchoa tricolor (spix & agassiz, 1829) in a subtropical estuary |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2017 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000200020 |
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| _version_ |
1714205181874274304 |