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

被引：2

作者：

Marcuk, Vladislav ^{[1
]}

Pina-Ortiz, Alberto ^{[1
]}

Castillo-Guerrero, Jose Alfredo ^{[2
]}

Masello, Juan F. ^{[3
,4
]}

Bustamante, Paco ^{[5
]}

Griep, Sven ^{[6
]}

Quillfeldt, Petra ^{[1
]}

机构：

[1] Justus Liebig Univ Giessen, Dept Anim Ecol & Systemat, Heinrich Buff Ring 26, D-35392 Giessen, Germany

[2] Univ Guadalajara, Dept Estudios Desarrollo Sustentable Zona Costera, Ctr Univ Costa Sur, Gomez Farias 82, Municipio De Cihuatlan 48980, Jalisco, Mexico

[3] Bielefeld Univ, Dept Anim Behav, Bielefeld, Germany

[4] Univ Venda, Dept Biol Sci, Private Bag X5050, ZA-0950 Thohoyandou, South Africa

[5] La Rochelle Univ, Littoral Environm & Soc LIENSs, CNRS, UMR 7266, F-17000 La Rochelle, France

[6] Justus Liebig Univ, Dept Bioinformat & Syst Biol, Heinrich Buff Ring 58, D-35392 Giessen, Germany

来源：

MARINE ENVIRONMENTAL RESEARCH | 2024年 / 199卷

关键词：

Birds; delta; 15N; 13C; Dietary plasticity; Feeding strategy; Gulf of California; Marine ecology; Mexican tropical Pacific; Red-billed tropicbird; Spatio-temporal dietary divergence; PHAETHON-AETHEREUS; FORAGING STRATEGIES; ROCKHOPPER PENGUINS; DIET; NICHE; COMPETITION; CALIFORNIA; ECOLOGY; ISLAND; PREY;

D O I：

10.1016/j.marenvres.2024.106627

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 (Phaethon aethereus; 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 (delta 15N and delta 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.

引用

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