Spatial-temporal changes in dimethyl acetal (octadecanal) levels of Octopus vulgaris (Mollusca: Cephalopoda): relation to feeding ecology
Rosa, R.; Marques, A.M.; Nunes, M.L.; Bandarra, N.M.; Reis, C.S. (2004). Spatial-temporal changes in dimethyl acetal (octadecanal) levels of Octopus vulgaris (Mollusca: Cephalopoda): relation to feeding ecology. Sci. Mar. (Barc.) 68(2): 227-236. https://dx.doi.org/10.3989/scimar.2004.68n2227
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, more
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| Keywords |
Chemical compounds > Organic compounds > Lipids > Complex lipids
Invertebrates > Mollusca > Cephalopoda > Octopodidae > Octopus > Octopus vulgaris
Lipids > Phospholipids > Glycerophospholipids > Plasmalogens
Cephalopoda [WoRMS]; Mollusca [WoRMS]; Octopus vulgaris Cuvier, 1797 [WoRMS]
ANE, Portugal [Marine Regions]
Marine/Coastal |
| Authors | | Top |
- Rosa, R.
- Marques, A.M.
- Nunes, M.L.
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- Bandarra, N.M.
- Reis, C.S.
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| Abstract |
The present study aimed to identify and quantify the dimethyl acetal (DMA) levels in the muscle of Octopusvulgaris Cuvier, 1797, and to investigate the possible influence of octopus feeding ecology on their spatial and seasonal variations. The research was performed over one year in three areas of the Portuguese coast: Viana do Castelo, Cascais and Tavira. Significantly higher values of DMA were detected in Tavira (p< 0.05), an area where the importance of bivalves in the octopus’ diet was higher. The biochemical analyses performed in several prey items, belonging to five major taxonomic groups identified in octopus stomachs, revealed significant differences in DMA levels (p< 0.05). The highest values were obtained in bivalves (1.15 mg 100 g-1 dry weight), followed by gastropods (0.74 mg 100g-1 dw), cephalopods (0.67 mg 100 g-1 dw), crustaceans (0.23 mg 100 g-1 dw) and osteichthyes (0.10 mg 100 g-1 dw). Therefore, based on these findings it can be speculated that the higher DMA levels in O. vulgaris obtained in Tavira throughout the year were evidence of its feeding ecology. Since DMAs are derived from ether glycerophospholipids, including plasmalogens (PLMs), the importance and role of this phospholipid class is discussed. |
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