Trophic plasticity of a tropical seabird revealed through DNA metabarcoding and stable isotope analyses.

Marcuk, Vladislav; Piña-Ortiz, Alberto; Castillo-Guerrero, José Alfredo; Masello, Juan F; Bustamante, Paco; Griep, Sven; Quillfeldt, Petra

Marcuk, Vladislav; Piña-Ortiz, Alberto; Castillo-Guerrero, José Alfredo; Masello, Juan F; Bustamante, Paco; Griep, Sven; Quillfeldt, Petra.

Afiliação

Marcuk V; Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 26, 35392, Giessen, Germany. Electronic address: vladislav.marcuk@gmail.com.
Piña-Ortiz A; Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 26, 35392, Giessen, Germany. Electronic address: Alberto.Pina-Ortiz@bio.uni-giessen.de.
Castillo-Guerrero JA; Departamento de Estudios para el Desarrollo Sustentable de la Zona Costera, Centro Universitario de la Costa Sur, Universidad de Guadalajara, Gómez Farías 82, San Patricio-Melaque, Municipio de Cihuatlán, Jalisco, C.P. 48980, Mexico. Electronic address: alfredo.castillo@academicos.udg.mx.
Masello JF; Department of Animal Behaviour, Bielefeld University, Germany; Department of Biological Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa. Electronic address: juan.masello@uni-bielefeld.de.
Bustamante P; LIttoral, Environnement et Societés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 17000, La Rochelle, France. Electronic address: paco.bustamante@univ-lr.fr.
Griep S; Institute for Bioinformatics and Systems Biology, Justus Liebig University Giessen, Heinrich-Buff-Ring 58, D-35392, Giessen, Germany. Electronic address: sven.griep@gmx.de.
Quillfeldt P; Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 26, 35392, Giessen, Germany. Electronic address: Petra.Quillfeldt@bio.uni-giessen.de.

Mar Environ Res ; 199: 106627, 2024 Jul.

Article em En | MEDLINE | ID: mdl-38968803

ABSTRACT

ABSTRACT

DNA metabarcoding and stable isotope analysis have significantly advanced our understanding of marine trophic ecology, aiding systematic research on foraging habits and species conservation. In this study, we employed these methods to analyse faecal and blood samples, respectively, to compare the trophic ecology of two Red-billed Tropicbird (Phaethonaethereus; Linnaeus, 1758) colonies on Mexican islands in the Pacific. Trophic patterns among different breeding stages were also examined at both colonies. Dietary analysis reveals a preference for epipelagic fish, cephalopods, and small crustaceans, with variations between colonies and breeding stages. Isotopic values (Î´15N and Î´13C) align with DNA metabarcoding results, with wider niches during incubation stages. Differences in diet are linked to environmental conditions and trophic plasticity among breeding stages, influenced by changing physiological requirements and prey availability. Variations in dietary profiles reflect contrasting environmental conditions affecting local prey availability.

Assuntos

Código de Barras de DNA Taxonômico; Cadeia Alimentar; Animais; Isótopos de Carbono/análise; Dieta; Isótopos de Nitrogênio/análise; Aves/fisiologia; México

Palavras-chave

Birds; Dietary plasticity; Feeding strategy; Gulf of California; Marine ecology; Mexican tropical Pacific; Red-billed tropicbird; Spatio-temporal dietary divergence; Î´(13)C; Î´(15)N

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cadeia Alimentar / Código de Barras de DNA Taxonômico Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de publicação: Reino Unido

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