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| Mathieu-resuge, Margaux; Schaal, Gauthier; Kraffe, Edouard; Corvaisier, Rudolph; Lebeau, Oanez; Lluch-cota, Salvador E.; Salgado García, Rosa L.; Kainz, Martin J.; Le Grand, Fabienne. |
| The trophic fate of various food sources is of central interest for ecologists, yet not well understood in coastal lagoon food webs. In this field study, fatty acids (FA), stable isotopes (SI), and compound-specific isotopic analysis (CSIA) on FA were used to investigate how diets from oceanic and local sources are retained in a bivalve species (Spondylus crassisquama; Lamarck 1819) along a transect in the Ojo de Liebre lagoon (BCS, Mexico). Results from SI and FA indicated the contribution of oceanic diatoms at the entrance of the lagoon, through 15N enrichment, and higher proportions of 16:1n-7 and 20:5n-3 in digestive glands. In the inner bay, higher abundance of 18-carbon FA (18:1n-9, 18:3n-3, 18:4n-3) suggested a higher contribution of... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00501/61306/64914.pdf |
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| Mathieu-resuge, Margaux; Kraffe, Edouard; Le Grand, Fabienne; Boens, Andy; Bideau, Antoine; Lluch-cota, Salvador E.; Racotta, Ilie S.; Schaal, Gauthier. |
| Understanding the nature and origins of food sources supporting coastal lagoon-inhabiting organisms is necessary to evaluate the ecological status of such ecosystems. The trophic ecology of a bivalve specie Spondylus crassisquama was studied in the Ojo de Liebre lagoon (Baja California, Mexico), combining stable isotope (SI), fatty acid (FA) and sterols analyses along a transect under oceanic influences. The second objective of the study was to investigate if sterols compositions give complementary information to those obtained from FA and SI. Temporal and spatial patterns of the three biomarkers in bivalve tissues suggest oceanic inputs at the mouth of the lagoon, while the inner station was characterized by a contribution of local sources including an... |
| Tipo: Text |
Palavras-chave: Coastal zone; Ojo de liebre; Suspension-feeders; Multi-tracer analyses; Fatty acids; Stables isotopes; Sterols. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00484/59521/62494.pdf |
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