Elemental turnover rates and isotopic discrimination in a euryhaline fish reared under different salinities: Implications for movement studies

Mont’Alverne, Renata; Jardine, Timothy D.; Pereyra, Paula Evelyn Rubira; Oliveira, Mauro César Lamim Martins de; Medeiros, Rafael Sachett; Sampaio, Luís André; Tesser, Marcelo Borges; Garcia, Alexandre

doi:10.1016/j.jembe.2016.03.021

Cited by 31 publications

(14 citation statements)

References 70 publications

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“…Apparently, our extensive isotope baseline integrating isotope variations in space and throughout different years were robust enough to infer the use of estuarine and freshwater habitats for both catfishes, despite the inherent noise included in these mixing models. Laboratory studies on species-specific trophic discrimination factors and tissue turnover rates (e.g., Mont'alverne et al 2016) are needed to allow more accurate interpretation of catfish movement and habitat use in this subtropical lagoon.…”

Section: Discussionmentioning

confidence: 99%

Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon

Pereyra¹,

Mont’Alverne²,

Garcia³

2016

Zoologia (Curitiba)

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ABSTRACT. Although ariid catfishe species are known to use coastal systems during some stages of their life cycles, the energetic contribution of estuarine resources and habitat use by many species in this family are still unclear. We used stable isotope analyses to estimate the assimilation of primary carbon sources and to infer the use of estuarine and freshwater habitats by two ariid catfishes Genidens barbus (Lacepède, 1803) and Genidens genidens (Cuvier, 1829). An isotopic mixing model revealed that juveniles of both catfish species consume considerable amounts of estuarine-produced carbon sources (G. barbus: 54-87% and G. genidens: 36-84%). However, G. genidens adults rely more on freshwater-derived carbon sources (31-77%) than on estuarine sources (23-69%). These results support the hypothesis that both species occupy the estuary and assimilate organic carbon produced in this region during their early stages, but G. genidens adults consume carbon sources associated with the freshwater portion of the lagoon.

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Section: Discussionmentioning

confidence: 99%

Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon

Pereyra¹,

Mont’Alverne²,

Garcia³

2016

Zoologia (Curitiba)

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“…Juvenile M. liza showed a t 50 of only 16 and 14 days for δ 13 C and δ 15 N isotope ratios, respectively and a t 95 of 68 and 60 days for δ 13 C and δ 15 N, respectively. This relatively rapid R IT compared with larger or adult fishes (Hesslein et al ., ; Mont'Alverne et al ., ) is common in fishes at the juvenile stage because they have high metabolic rates due rapid growth (Herzka et al ., ).…”

Section: Food Ingredients Carbon (δ13c) and Nitrogen (δ15n) Stable Imentioning

confidence: 97%

“…As demonstrated by Mont'Alverne et al . (), euryhaline species that migrate from the ocean to freshwater show significant differences in F TD and R IT parameters along a salinity gradient.…”

Section: Food Ingredients Carbon (δ13c) and Nitrogen (δ15n) Stable Imentioning

confidence: 99%

“…Considering that mugilid species usually perform extensive migrations between sea and freshwater habitats to complete their life cycle (Whitfield et al, 2012), future investigations should also evaluate the effects of abiotic factors like temperature and salinity on isotopic parameters. As demonstrated by Mont'Alverne et al (2016), euryhaline species that migrate from the ocean to freshwater show significant differences in F TD and R IT parameters along a salinity gradient.…”

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confidence: 94%

“…The trophic-discrimination factor (F TD ) is influenced by several factors, such as type of food (e.g. plant or animal), temperature and consumption rate (Caut et al, 2009), salinity (Mont'Alverne et al, 2016) and can be quite variable (e.g. 0·04-1·2‰ for carbon and 1·5-5·0‰ for nitrogen) (Vander Zanden & Rasmussen, 2001;Post, 2002;Caut et al, 2009;Prado et al, 2012).…”

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confidence: 99%

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Elemental turnover rates and trophic discrimination in juvenile Lebranche mullet Mugil liza under experimental conditions

Oliveira

Mont’Alverne

Sampaio

et al. 2017

Journal of Fish Biology

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The aim of this study was to determine the isotopic-turnover rate (R ) and trophic-discrimination factor (F ) in muscle tissues of Lebranche mullet Mugil liza fed an experimental diet (δ C = -27·1‰; δ N = 1·0‰). Juvenile M. liza exhibited a relatively fast R , with a half-life (t ) of only 16 and 14 days for δ C and δ N respectively and a nearly complete isotopic turnover (t ) of 68 and 60 days for δ C and δ N.

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Biogeochemical multi‐tag approach reveals the habitat use of a large‐scale migratory fish through a fluvio‐estuarine system

Vegh

Volpedo

Sánchez

et al. 2021

River Research & Apps

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This study assesses the use of stable isotopes (δ 13 C and δ 15 N) and trace elements in gills (G), liver (L), and muscle (M) of the most commercially important migratory fish from the La Plata Basin, Prochilodus lineatus, as habitat proxies. With this purpose, fish and sediment (S) samples from the Paran a River and Río de la Plata Estuary were analyzed. Results showed differences in the stable isotopic ratios in fish tissue and sediments between the river and the estuary. In particular, δ 15 N values of the estuary samples were significantly lower (G = 7.38‰; L = 6.60‰; M = 8.61‰ and S = 4.36‰) than those from the river (G = 11.30-11.53‰; L = 11.03-12.35‰; M = 11.27-11.31‰, and S = 6.78-7.72‰), which could denote a shift in the isotopic baseline between these environments. Quadratic discriminant analysis effectively discriminates between sampling sites with high classification rates (L = 97.5%; G = 90%, and M = 82.5%), suggesting that combining stable isotopes and trace elements is useful to discriminate between fish populations. The liver was the most suitable tissue as a habitat indicator, using mainly δ 15 N, δ 13 C, Cr, and Hg as natural markers, and capable of discriminating between sites with a relatively high geographic resolution. Due to the spatial isotopic heterogeneity found in the La Plata Basin, these natural markers could be useful for studying other aquatic organisms' habitat use.

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Elemental turnover rates and isotopic discrimination in a euryhaline fish reared under different salinities: Implications for movement studies

Cited by 31 publications

References 70 publications

Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon

Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon

Elemental turnover rates and trophic discrimination in juvenile Lebranche mullet Mugil liza under experimental conditions

Biogeochemical multi‐tag approach reveals the habitat use of a large‐scale migratory fish through a fluvio‐estuarine system

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