Author:
Imbs Andrey B.,Grigorchuk Valeria P.
Abstract
AbstractNudibranch molluscs occur in marine ecosystems worldwide and prey on numerous invertebrate species. During feeding, dietary fatty acids (FAs) unusual for nudibranchs are transferred to their lipids. Normal biomembrane functions require stable composition of structural polar lipids (PL), but the pathways of dietary FA utilization to PL in nudibranchs still remain unknown. A combination of chromatography and tandem high-resolution mass spectrometry was used to determine total lipid, PL, FA, and PL molecular species composition of two cold-water species ofDendronotus, which then were compared with those ofTritonia tetraquetra. The use of FA trophic markers showed thatDendronotussp. andT. tetraquetraprey on different soft corals, whileD. robustusmay consumes hydrocorals and bryozoans. Nudibranch FA profiles were strongly modified by dietary FAs but their PL profilers were similar. Dietary FAs are not included in ceramide aminoethylphosphonate and inositol glycerophospholipids, but directed to ethanolamine, choline, and serine glycerophospholipids and, in some cases, form isobaric molecular species with different FA chain lengths. For such isobaric species, nudibranchs reduce the length of alkyl groups when very-long-chain FAs are obtained with diet. This molecular mechanism may explain the adaptation of nudibranch membrane structure to dietary input of unusual FAs.
Publisher
Springer Science and Business Media LLC
Reference49 articles.
1. Bouchet, P. et al. Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia 61, 1–526, https://doi.org/10.4002/040.061.0201 (2017).
2. McDonald, G. & Nybakken, J. A worldwide review of the food of nudibranch mollusks. 1. Introduction and the suborder Arminacea. Veliger 40, 157–159 (1997).
3. McDonald, G. & Nybakken, J. A worldwide review of the food of nudibranch mollusks. Part II. The suborder Dendronotacea. Veliger 42, 62–66 (1999).
4. Barnes, D. K. A. & Bullough, L. W. Some observations on the diet and distribution of nudibranchs at Signy Island, Antarctica. J. Moll. Stud. 62, 281–287, https://doi.org/10.1093/mollus/62.3.281 (1996).
5. Goodheart, J. A., Bazinet, A. L., Valdes, A., Collins, A. G. & Cummings, M. P. Prey preference follows phylogeny: evolutionary dietary patterns within the marine gastropod group Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia). Bmc Evol. Biol. 17, 221, https://doi.org/10.1186/s12862-017-1066-0 (2017).
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献