MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
Analysis of lipid and fatty acid composition of three species of scorpions with relation to different organs
ALDANA LAINO; CAMILO IVAN MATTONI; ANDRES ALEJANDRO OJANGUREN AFFILASTRO; MONICA CUNNINGHAM; FERNANDO GARCIA
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART B, BIOCHEMISTRY & MOLECULAR BIOLOGY.
ELSEVIER SCIENCE INC
Lugar: Amsterdam; Año: 2015 p. 27 - 27
Within arthropods most of the information related to the type of mobilization andstorage of lipids is found in insects and crustaceans. Literature is scarce withrelation to scorpions. This order is a remarkably important model of thebiochemistry, since it is characterized as an animal with very primitive traits whichhave varied minimally through time. In the present study we characterize andcompare lipids and fatty acids present in three species of scorpion: Timogeneselegans, Timogenes dorbignyi, and Brachistosternus ferrugineus, focusing thestudy on the main organs/tissues involved in the dynamics of lipids. As found in thefat body of insects, hepatopancreas of crustaceans and midgut diverticula ofspiders, the hepatopancreas of the three species studied here turned out to be theorgan of lipid storage (great quantity of triacylglycerides). With relation to thehemolymph and muscles, a great quantity of phospholipids was observed, which ispossibly involved in membrane formation. It is important to highlight that unlikewhat happens in insects, in scorpions the main circulating energetic lipid is thetriacylglyceride. This lipid is found in greater proportion in the hepatopancreas offemales, surely for reproduction. The fatty acid of the different organs/tissuesanalyzed remained constant in the three species studied with certain characteristicpatterns, thus observing saturated and unsaturated most abundant fatty acids ofC16 and C18. Finally, it could be observed that in T. elegans, T. dorbignyi and B.ferrugineus scorpions, there is a lack of 20:4 that generates a special conditionwithin fatty acids of arthropods.