Publication Date:
2024-02-05
Description:
This dataset provides the values of stable carbon and nitrogen stable isotopes in bulk muscle samples of 11 species of cetacea from the Macaronesian regions (Canary, Madeira, and Azores Islands) collected between 1996 and 2018. The values of nitrogen stable isotopes in amino acids of muscle samples of the common dolphin (Delphinus delphis) were also provided. The samples were collected from stranded animals by trained personnel. Cetacean samples were obtained from necropsies of stranded cetaceans following a standard protocol defined by the European Cetacean Society (after Kuiken and García Hartmann 1991). Additional data included body length, age (adult, juvenile) and sex for each animal, along with carbon, nitrogen, and lipid content of muscle samples. Isotope data for bulk samples included values for samples with and without lipids. Exact latitude and longitude coordinates for each sample are not available, geographical position of the center of a circle including each island is given instead. Samples were freeze dried or dried (60°C, 48h) before analysis. Stable isotopes in bulk muscle samples were analysed in an isotope-ratio mass spectrometer coupled to an elemental analyser. Aliquots of each sample were analysed whole or after lipid extraction with trichloromethane:methanol (Bligh and Dyer, 1959). Stable nitrogen isotopes in amino acids were analysed after hydrolisis and derivatization of samples in an isotope-ratio mass spectrometer coupled to a gas chromatograph. Details on the analytical procedures can be found in Bode et al. (2021).
Keywords:
Alanine; Alanine, δ15N; Area/locality; Aspartamine and Aspartic acid; Aspartamine and Aspartic acid, δ15N; Atlantic spotted dolphin; bottlenose dolphin; Bryde's whale; Calculated; Carbon, total; Carbon/Nitrogen ratio; Carbon isotopes; Cetacea_Faial; Cetacea_Fuerteventura; Cetacea_Gran_Canaria; Cetacea_La_Gomera; Cetacea_La_Graciosa; Cetacea_La_Palma; Cetacea_Lanzarote; Cetacea_Madeira; Cetacea_Pico; Cetacea_Porto_Santo; Cetacea_Sao_Miguel; Cetacea_Tenerife; Cetacea_Terceira; common dolphin; Cuvier's beaked whale; DATE/TIME; DEPTH, water; Elemental analyser - isotope ratio mass spectrometry; Event label; Faial, Azores Islands, Portugal; fin whale; Fuerteventura, Canary Islands, Spain; Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS); Glutamine and Glutamic acid; Glutamine and Glutamic acid, δ15N; Glycine; Glycine, δ15N; Gran Canaria, Canary Islands, Spain; GRAV; Gravimetry; Isoleucine; Isoleucine, δ15N; La Gomera, Canary Islands, Spain; La Graciosa, Canary Islands, Spain; Lanzarote, Canary Islands, Spain; La Palma, Canary Islands, Spain; Latitude of event; Length, total; Leucine; Leucine, δ15N; Life stage; Lipids; Location; Longitude of event; Lysine; Lysine, δ15N; Madeira, Madeira Islands, Portugal; Methionine; Methionine, δ15N; Necropsy after Kuiken and García Hartmann (1991); Nitrogen, total; nitrogen isotopes; Phenylalanine; Phenylalanine, δ15N; Pico, Azores Islands, Portugal; Porto Santo, Madeira Islands, Portugal; Proline; Proline, δ15N; pygmy sperm whale; Risso's dolphin; Sample ID; Sao Miguel, Azores Islands, Portugal; Serine; Serine, δ15N; Sex; short-finned pilot whale; Species; Species code; sperm whale; Stable isotopes; striped dolphin; SUMMER; Sustainable Management of Mesopelagic Resources; Tape measure; Tenerife, Canary Islands, Spain; Terceira, Azores Islands, Portugal; Threonine; Threonine, δ15N; Uniform resource locator/link to reference; Valine; Valine, δ15N; Visual observation; Year of observation; δ13C; δ15N
Type:
Dataset
Format:
text/tab-separated-values, 2379 data points
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