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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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| Salgado-garcía, Rosa L.; Kraffe, Edouard; Maytorena-verdugo, Claudia I.; Rivera-camacho, Alma R.; Sicard, M. Teresa; Arellano-martínez, Marcial; Racotta, Ilie S.. |
| In marine ectotherms, reproduction is an energetically expensive process that affects their thermal window tolerance. For most species, the impacts of hyperthermia during gametogenesis have still not been addressed. Our aim was to assess the metabolic response of adult Nodipecten subnodosus scallops to thermal challenges at early development (spring) and advanced gonad maturation (summer). Scallops collected in both seasons were exposed to acute hyperthermia (26 and 30 °C, 24 h), maintaining a group of scallops at acclimation temperature (22 °C) as a control condition. During the summer, relatively low activity of hexokinase (HK), as well as low levels of ATP and GTP were found in the adductor muscle, suggesting a shift in energy investment for... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00609/72091/70815.pdf |
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