Omega-3 on the fly: long-legged fly Machaerium maritimae as a potential source of eicosapentaenoic acid for aquafeeds
Open Access
- 19 October 2021
- journal article
- research article
- Published by Brill in Journal of Insects as Food and Feed
- Vol. 7 (7), 1089-1100
- https://doi.org/10.3920/jiff2020.0112
Abstract
The need for more sustainable aquafeeds has prompted the exploration of insects as potential ingredients. However, commonly reared insects are not satisfactory regarding their fatty acid composition, lacking omega-3 long chain polyunsaturated fatty acids (n-3 LC PUFA), important nutrients for marine organisms. In this study, we present in detail the fatty acid profile of the long-legged fly Machaerium maritimae Haliday (Diptera: Dolichopodidae), an amphibiotic insect native to European coastal habitats. Specimens of this fly were collected in Ria de Aveiro coastal lagoon (Portugal) and the fatty acid profile was analysed through gas chromatography coupled with mass spectrometry. Results revealed a remarkably high level of n-3 LC PUFA, (11 μg/mg dry weight, 20% of the fatty acid profile) namely eicosapentaenoic acid, and a low level of saturated fatty acids. This value is higher than what is found in Hermetia illucens (black soldier fly), while comparable to other aquatic insects. We also report the presence of 50 distinct fatty acids, including multiple branched-chain and PUFA, and discuss potential implications of their presence on the ecology of this species. Variation in the fatty acid profile along the landscape is also presented. Our results indicate that M. maritimae can potentially be a high-quality lipid source for marine aquafeeds. Current legislation in Europe allowing the use of insects in aquaculture is restricted to a few selected species, often non-native, however, further research should consider native insects as potential alternatives to current ingredients in aquafeed.Keywords
This publication has 55 references indexed in Scilit:
- Comparison of fatty acid contents and composition in major lipid classes of larvae and adults of mosquitoes (Diptera: Culicidae) from a steppe regionInsect Science, 2012
- Differences in Fatty Acid Composition between Aquatic and Terrestrial Insects Used as Food in Human NutritionEcology of Food and Nutrition, 2011
- Long-Legged Flies (Diptera: Dolichopodidae)Published by Springer Science and Business Media LLC ,2008
- Fish Offal Recycling by the Black Soldier Fly Produces a Foodstuff High in Omega‐3 Fatty AcidsJournal of the World Aquaculture Society, 2007
- POLYUNSATURATED FATTY ACID CONTENT OF EDIBLE INSECTS IN THAILANDJournal of Food Lipids, 2006
- Phytanic acid: production from phytol, its breakdown and role in human diseaseCellular and Molecular Life Sciences, 2006
- Lipid biomarkers and trophic linkages between phytoplankton, zooplankton and anchovy (Engraulis encrasicolus) larvae in the NW MediterraneanJournal of Plankton Research, 2006
- Fatty acid compositions of 10 freshwater invertebrates which are natural food organisms of Atlantic salmon parr (Salmo salar): a comparison with commercial dietsAquaculture, 1994
- Methyl-branched fatty acids and their biosynthesis in the housefly, Musca domestica L. (Diptera: Muscidae)Insect Biochemistry and Molecular Biology, 1994
- ROYAL ENTOMOLOGICAL SOCIETYProceedings of the Royal Entomological Society of London, Series C. Journal of Meetings, 1940