Latitudinal changes in the lipid content and fatty acid profiles of juvenile female red squat lobsters (Pleuroncodes monodon) in breeding areas of the Humboldt Current System

The red squat lobster Pleuroncodes monodon is a species of high commercial value that inhabits the Humboldt Current System. Along the Chilean coast, two populations are exploited by the fishing industry, one located off the coast of Coquimbo and the other off the coast of Concepción. Yet, it is unknown whether there are differences in the “bioenergetic fuel” (measured as lipid content and fatty acid profile) of juvenile populations of these two fishing units and whether these bioenergetic compounds can be modulated by differences in the environmental parameters (such as temperature or chlorophyll-a) of their breeding areas. To shed some light on this, we measured the lipid content and fatty acid profiles of the viscera and muscle of juvenile female red squat lobsters from these two fishing units, specifically from breeding areas near long-exploited fishing grounds: a) the northern fishing unit (NFU, from 26°S to 30°S) and b) the southern fishing unit (SFU, from 32°S to 37°S). We found differences in the lipid content, fatty acid profiles, and ratios of saturated fatty acids (C16:0/C18:0) of juvenile females from these two locations. In addition, the essential fatty acids (DHA/EPA) found in the viscera versus the muscle of these lobsters varied significantly. Juvenile females from the SFU (i.e. Concepción) showed a higher lipid content compared to the juvenile females from the NFU (i.e. Coquimbo). Consistently, individuals from the SFU had a higher content of fatty acids, which also proved to be richer in saturated and monounsaturated fatty acids compared to those from the NFU. Our results are important for the fisheries in both areas because these juvenile populations are the source of new recruits for the adult populations that are exploited by the fishing industry. Our study also aids in determining which populations are healthier or of better quality in bioenergetic terms. Furthermore, increasing the incorporation of bioenergetic parameters in fishery models is essential for the recruitment and stock assessment within an ecosystem approach, since it allows for the evaluation of the nutritional condition of different fishing populations.

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Temporal variation in the fatty acid composition of ovigerous females and embryos of the squat lobster Pleuroncodes monodon (Decapoda, Munididae)

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531541700145x ◽

2017 ◽

Vol 98 (8) ◽

pp. 1977-1990 ◽

Cited By ~ 4

Author(s):

Miguel Bascur ◽

Fabián Guzmán ◽

Sergio Mora ◽

Pepe Espinoza ◽

Ángel Urzúa

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Seasonal Variation ◽

Fatty Acid ◽

Fatty Acid Profile ◽

Acid Composition ◽

Lipid Content ◽

Humboldt Current ◽

Fishery Resource ◽

Key Species

Pleuroncodes monodon, an important fishery resource and key species in the Humboldt Current Large Marine ecosystem, has a prolonged reproductive period from winter until end of summer, and during this time females incubating their embryos are exposed to seasonal variation in food availability and in temperature. Additionally, in order to ensure successful reproduction and survival of embryos, changes occur in the main internal reserves and/or sources of energy of P. monodon. The aim of this study was to determine the extent of seasonal variation (winter vs summer) in the lipid content and fatty acid composition of ovigerous females and their embryos. The results show that a higher percentage of saturated and polyunsaturated fatty acids are found in females in winter. Similarly, the composition of fatty acids in embryos found here indicates that winter embryos have more saturated fatty acids and essential fatty acids (C18:2n6cis, C18:3n6 and C22:6n3) than do summer embryos. According to PCA analysis of fatty acid profile, samples from summer may be distinguished into two isolated groups with conspicuous variations in fatty acids profile of embryo and hepatopancreas. While in winter, the opposite pattern occurs in the fatty acid profile of embryo and hepatopancreas. These variations may be related to relevant physiological processes (reproduction and growth) and of their ontogeny (development and survival of offspring). Seasonal variation in the lipid content and composition of fatty acids of P. monodon could directly impact this species’ reproduction and survival and subsequently could have consequences on the food web and fishery exploitation.

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The effect of long term storage on the lipid reserves and fatty acid composition of cysts and hatched juveniles of Globodera rostochiensis and G. pallida

Journal of Helminthology ◽

10.1017/s0022149x0001631x ◽

1998 ◽

Vol 72 (2) ◽

pp. 133-141 ◽

Cited By ~ 2

Author(s):

R.A. Holz ◽

D.J. Wright ◽

R.N. Perry

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Free Fatty Acid ◽

Neutral Lipid ◽

Lipid Content ◽

Neutral Lipids ◽

Lipid Fraction ◽

Neutral Lipid Fraction ◽

Fatty Acid Profiles ◽

Acidic Phospholipids

AbstractThe lipid composition of three batches of single generation cysts of Globodera rostochiensis, stored dry at 4°C for 1,7 and 13 years, comprised 81%, 74% and 53% neutral lipids, 14%, 18% and 27% non-acidic phospholipids and 5%, 8% and 20% free fatty acids, respectively. Lipids in eggs from two batches of G. pallida cysts, stored for 3 and 7 years, comprised 80% and 67% neutral lipids, 15% and 23% non-acidic phospholipids and 5% and 10% free fatty acids, respectively. All batches contained the same fatty acids which were dominated by C18:l, C20:l and C20:4. The fatty acid profiles of hatched J2 of G. rostochiensis from two batches, stored for 1 and 9 years, differed only in their free fatty acid fractions. Thus, while it is not possible to determine the age of cysts by their fatty acid profile, it may be possible to use the relative amounts of the main lipid classes as an indicator of age. Four batches of hatched J2 of G. pallida were investigated, with sample A hatched during the second week in potato root diffusate, B during week 3, C during week 4 and D during weeks 5 and 6 and stored for 3.5 days (on average) after hatching. Total lipid content was 27.2%, 31.5%, 18.5% and 6.3% of the dry weight for A, B, C and D, respectively. In the neutral lipid fraction of D an increase in C18:l and to a lesser extent C18:2 was observed. In the free fatty acid fraction of sample D, the percentages of C18:l, C18:2 and C18:3 were greater but the percentages of C20:3 and C20:4 were smaller compared with sample C. Fresh early hatched J2 of G. rostochiensis were compared with later hatched and stored (for 13 days on average) individuals for their lipid content and fatty acid composition. The lipid content was 26.1% and 11.4% in fresh and stored J2, respectively. Total lipid consisted of 77% and 70% neutral lipid, 18% and 26% non-acidic phospholipid and 6% and 4% free fatty acid in fresh and stored J2, respectively. In the neutral lipid fraction of stored J2 C18:l, C16:0 and C18:0 increased, whereas C20:4, C20:l and C20:3 decreased. Therefore, both neutral lipid and free fatty acid fractions showed changes in their fatty acid profiles after long delayed hatching and/or storage in both PCN species.

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Temporal variation of seston biomarkers within the Humboldt Current System off northern Chile (21

Advances in Oceanography and Limnology ◽

10.4081/aiol.2012.5324 ◽

2012 ◽

Vol 3 (1) ◽

pp. 17

Author(s):

Sergio Rossi ◽

Enrique Isla ◽

Susanne Fietz ◽

Alfredo Martìnez-Garcia ◽

Elisabet Sañé ◽

...

Keyword(s):

Fatty Acids ◽

Food Quality ◽

Bottom Water ◽

Current System ◽

Northern Chile ◽

Phytoplankton Composition ◽

Humboldt Current ◽

Intermediate Depth ◽

Water Layers ◽

Humboldt Current System

Proportions and concentrations of seston fatty acids, n-alkanes and glycerol dialkyl glycerol tetraethers (GDGTs) were used to assess potential differences in the phytoplankton composition and food quality in the Humboldt Current System (winter 2006, summer 2007 and winter 2007) in surface, oxycline, intermediate and bottom water layers. The zone below the intermediate depth was poorer in fatty acids (minimum 15 – maximum 117mg fatty acids L

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Temporal variation of seston biomarkers within the Humboldt Current System off northern Chile (21°S): first simultaneous records on fatty acids,n-alkanes and glycerol-dialkyl-glycerol-tetraethers (GDGT)

Advances in Oceanography and Limnology ◽

10.1080/19475721.2012.676068 ◽

2012 ◽

Vol 3 (1) ◽

pp. 17-40 ◽

Cited By ~ 3

Author(s):

Sergio Rossi ◽

Enrique Isla ◽

Susanne Fietz ◽

Alfredo Martínez-Garcia ◽

Elisabet Sañé ◽

...

Keyword(s):

Fatty Acids ◽

Temporal Variation ◽

Current System ◽

Northern Chile ◽

Humboldt Current ◽

Humboldt Current System ◽

Glycerol Dialkyl Glycerol Tetraethers

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Comparison of lipid contents and fatty acid profiles of freshwater fish from the Atatürk Dam Lake / Atatürk Baraj Gölü’ndeki tatlısu balıklarının lipid içeriği ve yağ asidi profilinin karşılaştırılması

Turkish Journal of Biochemistry ◽

10.1515/tjb-2016-0025 ◽

2016 ◽

Vol 41 (3) ◽

Cited By ~ 1

Author(s):

Semra Kaçar ◽

Mehmet Başhan

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Fatty Acid ◽

Freshwater Fish ◽

Acid Composition ◽

Lipid Content ◽

Methyl Esters ◽

Fatty Acid Profiles ◽

Liza Abu ◽

Atatürk Dam Lake

AbstractObjective: The objective of the study was to examine the lipid levels, fatty acid profiles (especially EPA and DHA which play an important role in the prevention of a wide variety disorders such as; coronary heart disease, hypertension, rheumatoid arthritis, breast and colon cancer, Alzheimer disease, inflammation and autoimmune disorders) and n-3/n-6 ratio of some freshwater fish in Ataturk Dam Lake.Methods: Samples of 12 fish species from the Ataturk Dam Lake (Turkey) were investigated for their fat content and fatty acid composition (Aspius vorax, Carasobarbus luteus, Carassius gibelio, Liza abu, Acanthobrama marmid, Barbus xanthopterus, Cyprinion macrostomum, Carassius auratus, Calcalburnus mossulensis, Capoeta trutta, Mastacembelus simack, Chondrostoma regium). Total lipids were extracted with 10 ml of chloroform-methanol (2/1v/v). Samples containing muscle lipid were transesterified with acidified methanol. The fatty acid methyl esters were extracted with hexane. Fatty acids were detected by gas chromatography (GC).Results: The lipid content of species ranged from 0.78% to 2.51%. The highest lipid content was found in female C. trutta (2.51%). The major SFAs were myristic acid (C14:0), palmitic acid (C16:0) and stearic acid (C18:0). Oleic acid (C18:1 n-9) and palmitoleic acid (C16:1 n-7) were the prominent MUFA. The dominant PUFAs were linoleic acid (LA, C18:2 n-6), linolenic acid (ALA, C18:3 n-3), arachidonic acid (AA, C20:4 n-6), eicoesapentaenoic acid (EPA, C20:5 n-3) and docoesahexaenoic acid (DHA, C22:6 n-3). The ratio of n-3/n-6 PUFAs ranged from 1.22 to 4.71.Conclusion: In this study, the fatty acid composition varied between different species In addition, the highest n-3/n-6 ratios were observed in female C. trutta, C. mossulensis, C. regium and A. vorax. Therefore, these species are economically important fish considering n-3 fatty acids and n-3/n-6 ratios.

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Water column distribution of phospholipid-derived fatty acids of marine microorganisms in the Humboldt Current system off northern Chile

Deep Sea Research Part II Topical Studies in Oceanography ◽

10.1016/j.dsr2.2008.09.008 ◽

2009 ◽

Vol 56 (16) ◽

pp. 1063-1072 ◽

Cited By ~ 13

Author(s):

Luisa F. Espinosa ◽

Silvio Pantoja ◽

Luis A. Pinto ◽

Jürgen Rullkötter

Keyword(s):

Fatty Acids ◽

Water Column ◽

Current System ◽

Northern Chile ◽

Marine Microorganisms ◽

Humboldt Current ◽

Humboldt Current System

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Stable isotope and fatty acid analyses reveal significant differences in trophic niches of smooth hammerhead Sphyrna zygaena (Carcharhiniformes) among three nursery areas in northern Humboldt Current System

PeerJ ◽

10.7717/peerj.11283 ◽

2021 ◽

Vol 9 ◽

pp. e11283

Author(s):

Eduardo Segura-Cobeña ◽

Joanna Alfaro-Shigueto ◽

Jeffrey Mangel ◽

Angel Urzua ◽

Konrad Górski

Keyword(s):

Fatty Acid ◽

Current System ◽

Nursery Area ◽

San Jose ◽

Humboldt Current ◽

Nursery Areas ◽

Peruvian Coast ◽

Humboldt Current System ◽

Management And Conservation ◽

Trophic Niches

Fishery pressure on nursery areas of smooth hammerhead in northern Peruvian coast have become a serious threat to sustainability of this resource. Even though, some management actions focused on conservation of the smooth hammerhead populations were proposed in recent years, their scientific foundations are often limited, and biomass of smooth hammerhead in Peruvian waters continues to decrease. To inform management and conservation, this study aims to evaluate the trophic niche of smooth hammerhead juveniles from three nursery areas in the northern Peruvian coast using stable isotope and fatty acid analyses. First, we compared the environmental characteristics of each nursery area (i.e., sea surface temperature and chlorophyll-a concentration) and concluded that nursery areas differed significantly and consistently in sea surface temperature. Subsequently, we evaluated isotopic composition of carbon and nitrogen and fatty acid profiles of muscle and liver tissues collected from juvenile smooth hammerhead from each nursery area. We found that juvenile smooth hammerhead captured in San José were enriched in heavier 13C and 15N isotopes compared to those captured in Máncora and Salaverry. Furthermore, the broadest isotopic niches were observed in juveniles from Máncora, whereas isotopic niches of juveniles from Salaverry and San José were narrower. This difference is primarily driven by the Humboldt Current System and associated upwelling of cold and nutrient rich water that drives increased primary production in San José and, to a less extent, in Salaverry. Compared to smooth hammerhead juveniles from Máncora, those from San José and Salaverry were characterised by higher essential fatty acid concentrations related to pelagic and migratory prey. We conclude that smooth hammerhead juveniles from three nursery areas in the northern Peruvian coast differ significantly in their trophic niches. Thus, management and conservation efforts should consider each nursery area as a unique juvenile stock associated with a unique ecosystem and recognize the dependence of smooth hammerhead recruitment in San José and Salaverry on the productivity driven by the Humboldt Current System.

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