Can muscle fatty acid signature be used to distinguish diets during the marine trophic phase of sea lamprey (Petromyzon marinus, L.)?

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Lanca, MJ (Author) Other; Rosado, C (Author) Other; Machado, M (Author) Other; Ferreira, R (Author) Other; Alves Pereira, I (Author) Other; Quintella, BR (Author) Other; Pedro Almeida (Author) Other

Journal

Title: COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY

Vol. 159

Pages: 26-39

ISSN: 0305-0491

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 9 Citations

Other information

Authenticus ID: P-002-S5Y

DOI: 10.1016/j.cbpb.2011.01.006

Abstract (EN): Characterization of muscle and liver fatty acid profiles, determination of liver lipogenic and lipolytic activities and estimation of liver fatty elongases and desaturases activities of sea lamprey were realized at the beginning of the spawning migration. The muscle fatty acid profile was consistent with the location of capture, and revealed that animals captured far upstream from the river mouth presented the lowest C18:1 omega 9 levels and the highest relative proportions of C20:4 omega 6, C20:5 omega 3 (EPA), C22:5 omega 3 (DPA) and C22:6 omega 3 (DHA). These results suggest: (i) the vital importance of the conservation of C20:4 omega 6 as a precursor of eicosanoids; (ii) the retention of EPA. DPA and DHA for metabolic energy for reproduction; and (iii) the utilization of C18:1 omega 9 for metabolic fuel use in the beginning of the spawning period. Hepatic lipolysis and lipogenesis revealed significant differences which could, eventually, result from the diet during the parasitic phase of sea lamprey life cycle. Present results revealed that the muscle act as a fat depot site which explains the few significant correlations observed for fatty acids between muscle and liver. Muscle neutral lipids fatty acid signature at the beginning of the spawning migration can be used to distinguish differences in the diet of sea lampreys during the marine trophic phase of their life cycle.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14