Comparative study on the fatty acid composition of two marine vertebrates: Striped dolphins and loggerhead turtles

Raimon Guitart, Albert Martinez Silvestre, Xavier Guerrero, Rafael Mateo

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Abstract

The fatty acid composition of total lipids extracted from seven different tissues (fat, liver, cerebrum, cerebellum, lung, kidney and muscle) of 10 striped dolphins (Stenella coeruleoalba) (weight 75.7 ± 16.2 kg) found dead or moribund during a morbillivirus epizootic, and from two tissues (fat and liver) of 54 loggerhead turtles (Caretta caretta) (18.5 ± 10.5 kg) seized dead after illegal capture, both from the Mediterranean Sea, have been determined by high resolution chromatography techniques. When comparing both species, fatty acid composition is surprisingly similar, with a predominance of the monoenoic followed by the saturated group of fatty acids, and a very close ratio of polyunsaturates n-3/n-6. The relatively high arachidonic acid content in the liver of the two marine species is remarkable. The similar diet can play an important role in these findings, but it is suggested that probably metabolic pathways and essential fatty acid requirements between both marine vertebrates are similar, more than is expected from their earlier filogenetic evolutionary divergence.
Original languageEnglish
Pages (from-to)439-443
JournalComparative Biochemistry and Physiology - B Biochemistry and Molecular Biology
Volume124
DOIs
Publication statusPublished - 29 Nov 1999

Keywords

  • Arachidonic acid
  • Caretta caretta
  • Fatty acids
  • Marine mammals
  • Marine turtles
  • Mediterranean Sea
  • PUFA
  • Stenella coeruleoalba

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    Guitart, R., Silvestre, A. M., Guerrero, X., & Mateo, R. (1999). Comparative study on the fatty acid composition of two marine vertebrates: Striped dolphins and loggerhead turtles. Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology, 124, 439-443. https://doi.org/10.1016/S0305-0491(99)00138-8