Evaluation of lipid biomarkers as indicators of changes in organic matter delivery to sediments from Lake Planina, a remote mountain lake in NW Slovenia

Muri, Gregor; Wakeham, Stuart G.; Pease, Tamara K.; Faganeli, Jadran

doi:10.1016/j.orggeochem.2004.06.004

Cited by 79 publications

(39 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our attention was focused on C24:0. Long-chain saturated fatty acids (from C24:0 to C28:0) in the marine environment generally stem from higher plant waxes and are more abundant in deep than in surface sediments near the shore (Rielley et al 1991, Muri et al 2004). Group II is once again the group with the highest values of C24:0 (relative amount and frequency of occurrence), which raises the hypothesis that sea lampreys have a feeding strategy relatively close to the continent.…”

Section: Discussionmentioning

confidence: 99%

Feeding strategy assessment through fatty acid profiles in muscles of adult sea lampreys from the western Iberian coast

Lança¹,

Machado²,

Ferreira³

et al. 2013

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY:The fatty acid signature of sea lamprey Petromyzon marinus (L.) muscle was used as a tool to detect feeding strategies used during the parasitic marine trophic phase of the species. Adult sea lampreys were collected near the mouth of six Portuguese rivers (Minho, Lima, Douro, Vouga, Mondego and Tagus) and muscle fatty acid profile was characterized. The analysis of fatty acid composition of muscle neutral lipids showed the formation of two groups, indicating that two feeding strategies may have been used by sea lampreys during the parasitic phase, based on the availability of ω-3 and ω-6 PUFA and on evidence of phytoplankton/zooplankton and bacterial detritus contribution in the sea lamprey host preferences. Two distinct lipid profiles were observed, probably related to two different trophic approaches, one typical of a top predator of a marine food web with a planktonic support, and the other much more diverse, including the same planktonic markers, together with biochemical clues that probably resulted from a parasitic phase that directly targeted fish that consumed detritus and benthic algae and/or fish from a food web with a detritivorous base. Keywords: Petromyzon marinus, feeding strategies, marine phase, fatty acids, Portugal. RESUMEN: Evaluación dE EstratEgias dE alimEntación mEdiantE la utilización dE pErfilEs dE ácidos grasos En los músculos dE lamprEa marina adulta dE la costa occidEntal ibérica. -Las composiciones de los ácidos grasos en los músculos de lamprea marina Petromyzon marinus (L.) fueron usadas como herramienta para detectar la estrategia de alimentación de la especie durante la fase marina de alimentación parasítica. Se recolectaron individuos adultos cerca de la desembocadura de las cuencas hidrográficas de seis ríos portugueses (Miño, Lima, Duero, Vouga, Mondego y Tajo) y se caracterizaron los perfiles de los contenidos en ácidos grasos en el músculo. El análisis de la composición en ácidos grasos de los lípidos neutros del músculo muestra la formación de dos grupos, lo que indica que las lampreas en su fase parasítica pueden usar dos estrategias de alimentación basadas en la disponibilidad de ω-3 y ω-6 PUFA y en la contribución de fitoplancton/zooplancton y detritos bacterianos en las preferencias alimenticias de los huéspedes de la lamprea marina. Se observaron dos perfiles lipídicos distintos que, probablemente, están relacionados con dos aproximaciones tróficas diferentes, una típica de un predador superior de cadena trófica marina con una base planctónica y otra, mucho más variada, que incluye los mismos marcadores planctónicos junto a indicios bioquímicos que probablemente son el resultado de una fase parasítica de peces consumidores de detritus y algas bentónicas, y/o la depredación de peces de cadena trófica con una base detritívora.Palabras clave: Petromyzon marinus, estrategias de alimentación, fase marina, ácidos grasos, Portugal. Scientia Marina 77(2)

show abstract

Section: Discussionmentioning

confidence: 99%

Feeding strategy assessment through fatty acid profiles in muscles of adult sea lampreys from the western Iberian coast

Lança¹,

Machado²,

Ferreira³

et al. 2013

Sci. Mar.

View full text Add to dashboard Cite

show abstract

“…To further investigate these results, we employed the CPI index and ratios of long to short n-alkane chains, to assess relative changes in the contribution of allochthonous vs. autochthonous components. 2,41 The CPI in the range of C 23 -C 31 showed considerable variation with depth, with a value of 4.8 in the surface sediment and a decrease with depth to 3.1-3.3 at 30-40 cm. The CPI increases again in the deeper sediments where higher ratios were observed (Figure 4c), in agreement with the TOC variation (Figure 4a).…”

Section: Hydrocarbon Variations With Depth Profilementioning

confidence: 98%

“…The range of TOC values is consistent with those previously reported for the same lagoon, 7,8 and for other subtropical lagoons and estuaries. 2,21 Total phosphorus ranged from 2.89 to 10.00 µmol g -1 , and the highest values of TP and TOC were found at the same two stations (LC3 and LC4). The other three parameters analyzed (N, OP and IP), followed the same trend.…”

Section: Elemental Composition At the Sediment-water Interfacementioning

confidence: 99%

“…Sources of lipids include primary production, inputs of terrestrial material from the watershed region and products associated with microbial activity in the water and sediment. 1,2 Of particular relevance to sediments of estuaries and lagoons are organic compounds such as ketones, sterols, fatty acids, hydroxy acids, n-alkanes and n-alkanols. 3,4 These preserved components are also known as geolipids or biomarkers, because they can be linked with biological precursor compounds.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Silva

Oliveira²,

Oliveira

et al. 2008

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Compostos orgânicos provenientes de cinco amostras de sedimentos e um perfil com 75 cm foram coletados na Lagoa da Conceição, localizada na Ilha de Santa Catarina, com o objetivo de avaliar fontes de matéria orgânica. Os resultados que foram baseados na relação C:N:P, abundância relativa dos esteróis (com predomínio dos C 27 ), álcoois (0,2-1,2 µg g -1 ) e hidrocarbonetos lineares (0,4-5,0 µg g -1 ), e no uso do Índice Preferencial de Carbono (CPI), indicaram que a matéria orgânica é preferencialmente de origem terrestre (C/N > 10 e CPI > 2). Em todos os locais observaram-se correlações significativas entre as quantidades de fósforo (TP, média 5,20 µmol g -1 ) e carbono orgânico total (TOC, média 2,90 mmol g -1 ) com as frações de silte e argila. No perfil, que foi cronologicamente datado com o radionuclídeo 210 Pb, o intervalo de 55 a 75 cm apresentou predomínio de areia (> 50%). Entretanto, outros parâmetros, tais como TOC, TP e hidrocarbonetos também aumentaram nesse intervalo, o que sugere uma mudança na fonte de matéria orgânica.Lipid compounds from five sediment-water interface samples and a sediment core with 75 cm depth were used to assess sources of organic matter in Conceição Lagoon, located on Santa Catarina Island. The results which were based on the molar C:N:P ratios, relative abundance of sterols (dominated by the C 27 sterols), n-alkanols (0.2-1.2 µg g -1 ), n-alkanes (0.4-5.0 µg g -1 ) and the Carbon Preference Index (CPI), indicated that the organic matter is predominantly of terrestrial origin (C/N > 10 and CPI > 2). Total phosphorus (TP, average 5.20 µmol g -1 ) and organic carbon (TOC, average 2.90 mmol g -1 ) contents were well correlated with the silt and clay fractions at all locations. In the sediment core, chronologically dated with the radionuclide 210 Pb, the depth interval from 55 to 75 cm was dominated by the sand fraction (> 50%). However, parameters such as TOC, TP and n-alkane contents increased considerably at this depth suggesting a change in organic matter input sources.

show abstract

“…Prior to instrumental analysis, the F4 fraction of each sample was derivatized with bis(trimethylsilyl)trifluoroacetamide (BSTFA) in pyridine to convert alcohols into their trimethylsilyl ethers. The F5 fraction was saponified with 0.5 mol l À1 KOH in methanol and subsequently acidified to pH 2, and the released fatty acids were extracted in hexane and then methylated with 10% BF 3 -methanol solution to yield fatty acid methyl esters (FAME) (Muri et al, 2004;. Lipid fractions were analyzed by gas chromatography-mass spectrometry (GC-MS), using a HP 6890N GC equipped with an HP-5 fused silica capillary column (30 m, 0.25 mm inner diameter, 0.25 lm film thickness) and interfaced to a HP 5973N MS.…”

Section: Chemical Analysesmentioning

confidence: 99%

Composition and sources of organic matter and its solvent extractable components in surface sediments of a bay under serious anthropogenic influences: Daya Bay, China

Gao

Chen

Long

2008

Marine Pollution Bulletin

View full text Add to dashboard Cite

Evaluation of lipid biomarkers as indicators of changes in organic matter delivery to sediments from Lake Planina, a remote mountain lake in NW Slovenia

Cited by 79 publications

References 44 publications

Feeding strategy assessment through fatty acid profiles in muscles of adult sea lampreys from the western Iberian coast

Feeding strategy assessment through fatty acid profiles in muscles of adult sea lampreys from the western Iberian coast

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Composition and sources of organic matter and its solvent extractable components in surface sediments of a bay under serious anthropogenic influences: Daya Bay, China

Contact Info

Product

Resources

About