An Investigation on Phospholipid and Triglyceride Fatty Acids of Mediterranean Flour Moth, Ephestia kuehniella (Lepidoptera: Pyralidae)

Subject Areas : Journal of Animal Biology

Mohaddeseh  Zarrinkolah ¹ (Plant Protection Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran)
Reza  Farshbaf Pourabad ² (Plant Protection Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran)
Reza  Khakvar ³ (Plant Protection Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran)

Received: 2023-03-15 Accepted : 2023-06-02 Published : 2023-11-22

Keywords: flour, Triglyceride, Ephestia kuehniella, Phospholipid, Larval ages,

Abstract :

The Mediterranean flour moth (Ephestia kuehniella) is an important storage pest that can cause significant losses in flour factories. The current study was conducted in order to study the quantity and quality of different phospholipids and triglycerides fatty acids in the body of the 4th and 5th instar of E. kuehniella. According to the results, among the fatty acids in the phospholipids group, the highest amount of fatty acid in all tested samples was related to Oleic acid (18:01) with an average value of about 40%. This fatty acid had the highest amount in both 4th and 5th instar as well as both male and female larvae. The lowest amount in this group was Arachidic acid (20:00) with an average value of 0.11%. This fatty acid was seen in small amounts in all samples, although its amount was significantly higher in females than in males. In the triglyceride group, two fatty acids Myristic acid (14:00C) and Palmitic acid (16:00C) accounted for the highest amounts with values of 23% and 26.8% respectively, while Docosahexaenoic acid (DHA) was recorded as the lowest fatty acid with a small amount of 0.46%. In comparison of male and female samples, the biggest difference in the amount of fatty acids was recorded in the two fatty acids DHE from the phospholipid group and stearic acid (18:00) from the triglyceride group, which were measured 5 and 2.2 times more in females than in males, respectively. The biggest changes between the 4th and 5th instars in the phospholipid group were related to linolenic acid (18:3C) and DHE, which showed a 50% increase from 4th to 5th instar, and the most changes in the triglyceride group was related to myristic acid (14:00) and DHE, which showed a several-fold decrease from the age from 4th to 5th instar.

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