Fatty acid composition of ten marine algae from australian waters

Johns, R. B.; Nichols, Peter D.; Perry, G.J.

doi:10.1016/0031-9422(79)80018-7

Cited by 169 publications

(72 citation statements)

References 14 publications

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“…The most abundant FA compounds of Notolabrus celidotus were the saturated FA 16:0 and the polyunsaturated FA (PUFA) 22:6ω3 (Table 1 markers for marine algae in previous studies (Johns et al 1979, Kharlamenko et al 2001. , which is a biomarker for bacteria, and monounsaturated FA in general, were present in higher abundances in fish from inner Doubtful and Bradshaw Sounds, than in those from the other sites.…”

Section: Fatty Acid Biomarkers and δ δ 13 C Of Individual Fatty Acidsmentioning

confidence: 88%

Habitat conversion and species loss alters the composition of carbon sources to benthic communities

McLeod

Wing²,

Davis³

2010

Mar. Ecol. Prog. Ser.

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Generalist fishes provide an effective measure of the composition of basal carbon source pools fueling benthic communities, by integrating inputs across major consumer groups. In Doubtful Sound, New Zealand, shallow water invertebrate communities differ from those in other areas in Fiordland due to low salinity caused by freshwater output of a hydroelectric power station. To investigate whether the composition of basal carbon sources supporting this benthic community differed from that in unaltered sites, we sampled a generalist wrasse, Notolabrus celidotus, from altered and unaltered habitats throughout Fiordland, and quantified its δ 13 C, δ 15 N, δ 34 S and the abundance of its fatty acids. N. celidotus from the altered sites in Doubtful Sound had significantly lower δ 13 C, δ 15 N and δ 34 S than those collected from similar habitats throughout the Fiordland region, indicating a higher proportion of chemosynthetically fixed organic matter for Doubtful Sound N. celidotus and the invertebrate community upon which they feed. Relatively high abundances of cis-vaccenic acid (18:1ω7c) in fish from Doubtful Sound and δ 13 C values that were ~-33 ‰ for 18:1 isomers confirmed the incorporation of chemosynthetic bacteria, and indicated that the original source of carbon was forest litter. Despite these differences in carbon supply to N. celidotus, analysis of otolith sections revealed no differences in growth rates among sites. The results of this study demonstrate that a shift in invertebrate composition can be indicated by higher order consumers. In Doubtful Sound, decreased abundance of filter-feeding bivalves has reduced the flux of marine derived carbon through the benthic community to higher trophic levels relative to more pristine sites in Fiordland.KEY WORDS: Notolabrus celidotus · Stable isotopes · Fatty acid biomarkers · Compound specific δ 13 C · Food web Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 411: [127][128][129][130][131][132][133][134][135][136] 2010 tures of fish muscle tissue integrate carbon source use by a community over months to years (e.g. Guelinckx et al. 2007, Suring & Wing 2009). We designed a sampling scheme to test whether anthropogenic modifications to the salinity environment in a New Zealand fjord had altered carbon routing in the benthic community. While the marine and terrestrial environments of the 15 fjords in southern New Zealand, collectively known as Fiordland, remain relatively pristine, Doubtful Sound receives an average of 450 m 3 s -1 of freshwater outflow from the Manapouri Hydroelectric Power Station. The resulting persistent shallow low salinity layer (Gibbs et al. 2000) has led to a reduction in the abundance of filter-feeding invertebrates including infaunal clams (Tallis et al. 2004, Rutger & Wing 2006, McLeod & Wing 2008 and mussels (Jack et al. 2009). The decreased biomass of filterfeeding bivalves could dramatically reduce the capture of particulate carbon (from both phytoplankton and eroded macroalg...

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Section: Fatty Acid Biomarkers and δ δ 13 C Of Individual Fatty Acidsmentioning

confidence: 88%

Habitat conversion and species loss alters the composition of carbon sources to benthic communities

McLeod

Wing²,

Davis³

2010

Mar. Ecol. Prog. Ser.

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“…These and other technological improvements in instrumentation have resulted in a growing number of reported signature lipids identifying specific subgroups of microorganisms from various environments (Lechevalier 1977;Johns et al 1979;Taylor and Parkes 1983;Sasser et al 1984) further extending the usefulness of computer aided gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS) analysis.…”

Section: Introductionmentioning

confidence: 99%

Lipid composition and metabolic activities of benthic near-shore microbial communities of Arthur Harbor, antarctic peninsula: Comparisons with McMurdo Sound

et al. 1989

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Summary. Benthic microbial communities of the Arthur Harbor area were described by analysis of their cell membrane phospholipid ester-linked fatty acids (PELFA) and metabolic rates. Analysis revealed a biomass averaging 6 nM (phospholipid) or 3.5 x 10 8 cells per gram dry weight (gdw) of sediment for the four sites. Only slight biomass differences were detected between the four peninsula sites. All Arthur Harbor sites were determined to have a biomass similar to the lowest amount reported for a previously described McMurdo Sound site at New Harbor. Community structure based on signature phospholipids indicated only slight differences between the four peninsula sites with greater relative amounts of diatom marker lipids at a deeper site. Bacterial biomarker lipids were also determined in relatively equal proportions for the four Arthur Harbor sites with only one site indicating a somewhat decreased proportion. Metabolic rates of sodium [a4C]-acetate and methyl [3H]-thymidine incorporation into lipid and bacterial DNA respectively also indicated only slight relative differences in microbial communities of Arthur Harbor study sites. Lipid metabolism (14 C-acetate) ranged between 6 and 12 ( x 10 4) DPM/g/h for the four sites with 8 being the average. Bacterial (excluding sulfate-reducing bacteria (SRB)) cell divisions per g per h indicated increased rates at a deeper site with 14 x 10 5, compared to the average (5 x 10 5) for the three remaining sites. Average estimated total bacterial (excluding SRB's) community turnover was on the order of 0.6%/h for the four sites. Metabolic rate comparisons of Arthur Harbor with those of previously determined McMurdo Sound indicated a somewhat increased lipid metabolism and an order of magnitude greater bacterial cell division rate at Arthur Harbor.

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“…The amount of 4, 8, 12-tri methyl-13:0 fatty acid was observed more abundant in internal body tissue of Chiton lamyi, with a maximum level in spring. 4, 8, 12 trimethyl tridecanoic acid (4,8,12 TMTD) origins from the herbivore chiton's diet and is derived from phytol and chloroplast membrane lipids [16,17] . So it is possible that internal organs contribute in the metabolism of this fatty acid, more than foot.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Variations of n-6: n-3 Ratios and Fatty Acid Compositions in Foot and Tissue of Chiton lamyi in a High Primary Productivity Area

Sajjadi¹,

Eghtesadi-Araghi²,

Jamili³

et al. 2009

American J. of Environmental Sciences

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Problem statement: Fatty acid content and composition in mollusks is a function of their feeding diversity. Chabahar bay located in the northern part of Oman sea in Indian ocean provides high rates of primary productivity and a diverse food source for mollusks in this area. Identification of fatty acid compositions of Chiton lamyi and study their seasonal changes in the intertidal zone of Chabahar bay. Study the meat quality by n-6: n-3 ratios calculation throughout the year. Approach: Chiton lamyi species analyzed seasonally for its fatty acid compositions in foot and internal tissue separately by GC/MS chromatography. Temperature and nutrients measured monthly for evaluating their effects on investigated seasonal variations of fatty acids. Pearson analysis showed effects of measured environmental factors on studied fatty acids composition. n-6: n-3 ratio calculated seasonally in order to study meat quality. Results: Thirteen fatty acids identified in foot and internal tissue of Chiton lamyi. The major Saturated Fatty Acids (SFAs) were myristic, palmitic and stearic acids. The major MonoUnsaturated Fatty Acids (MUFAs) were palmitoleic, oleic and 11-eicosenoic acids and PolyUnsaturated Fatty Acids (PUFAs) were linoleic, eicosapentaenoic and arachidonic acids. Palmitic acid was the most abundant in this species. Fatty acid contents of foot and internal tissue of Chiton lamyi were similar but their seasonal variations were different. Pearson analysis showed correlation among palmitic and oleic acids with silicate; oleic acid with phosphate; Linoleic and arachidonic acids with nitrate in Chiton lamyi internal tissues, but no correlation observed in foot. Although temperature showed correlation with heptadecanoic and methyl-heptadecanoic acids in Chiton lamyi foot, no correlation found in internal tissues. Also, n-6: n-3 ratio calculations showed domination of n-3 fatty acid over n-6 only in spring. Conclusion: Fatty acid variations were not same at different organs and environmental factors could have opposite effects on them in this species. Also, n-6: n-3 ratio showed the lack of food loads throughout the year except in spring for this species. These findings can lead the best exploitation periods for such marine mollusks.

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Fatty acid composition of ten marine algae from australian waters

Cited by 169 publications

References 14 publications

Habitat conversion and species loss alters the composition of carbon sources to benthic communities

Habitat conversion and species loss alters the composition of carbon sources to benthic communities

Lipid composition and metabolic activities of benthic near-shore microbial communities of Arthur Harbor, antarctic peninsula: Comparisons with McMurdo Sound

Seasonal Variations of n-6: n-3 Ratios and Fatty Acid Compositions in Foot and Tissue of Chiton lamyi in a High Primary Productivity Area

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