Temperature Affects the Use of Storage Fatty Acids as Energy Source in a Benthic Copepod (Platychelipus littoralis, Harpacticoida)

Werbrouck, Eva; Gansbeke, D. Van; Vanreusel, Ann; Troch, Marleen De

doi:10.1371/journal.pone.0151779

Cited by 28 publications

(16 citation statements)

References 68 publications

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“…DHA has been shown to be efficiently transferred from algae, up the food chain, to fish where it is generally highly retained (Hixson et al 2015;Colombo et al 2017). In zooplankton, heat stress lowered the DHA concentration in copepods regardless of the resources available, and this implies negative effects for higher trophic levels (Werbrouck et al 2016). Further, studies have shown that variability in the PUFA content of freshwater phytoplankton communities produces variability in the PUFA content of fish (Ahlgren et al 1996), and the fatty acid composition of marine fish is well known to reflect the fatty acid content of their diet, and, ultimately, of local phytoplankton (St. John and Lund 1996).…”

Section: Model Assumptionsmentioning

confidence: 99%

Projected declines in global DHA availability for human consumption as a result of global warming

Colombo

Rodgers

Diamond

et al. 2019

Ambio

108

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Docosahexaenoic acid (DHA) is an essential, omega-3, long-chain polyunsaturated fatty acid that is a key component of cell membranes and plays a vital role in vertebrate brain function. The capacity to synthesize DHA is limited in mammals, despite its critical role in neurological development and health. For humans, DHA is most commonly obtained by eating fish. Global warming is predicted to reduce the de novo synthesis of DHA by algae, at the base of aquatic food chains, and which is expected to reduce DHA transferred to fish. We estimated the global quantity of DHA (total and per capita) currently available from commercial (wild caught and aquaculture) and recreational fisheries. The potential decrease in the amount of DHA available from fish for human consumption was modeled using the predicted effect of established global warming scenarios on algal DHA production and ensuing transfer to fish. We conclude that an increase in water temperature could result, depending on the climate scenario and location, in a * 10 to 58% loss of globally available DHA by 2100, potentially limiting the availability of this critical nutrient to humans. Inland waters show the greatest potential for climate-warminginduced decreases in DHA available for human consumption. The projected decrease in DHA availability as a result of global warming would disproportionately affect vulnerable populations (e.g., fetuses, infants), especially in inland Africa (due to low reported per capita DHA availability). We estimated, in the worst-case scenario, that DHA availability could decline to levels where 96% of the global population may not have access to sufficient DHA. Keywords Aquaculture Á Climate change Á Docosahexaenoic acid (DHA) Á Fisheries Á Global warming Stefanie M. Colombo and Timothy F. M. Rodgers contributed equally to this project.

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Section: Model Assumptionsmentioning

confidence: 99%

Projected declines in global DHA availability for human consumption as a result of global warming

Colombo

Rodgers

Diamond

et al. 2019

Ambio

108

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“…At reduced temperatures, in their study with C. crangon, Mika et al (2014) reported similar response as also did also Perez-Velazquez et al (2003) with L. vannamei. Despite partial starvation coupled with the cold-stress, the significant accumulations of PUFA and LC-PUFA recorded in the tissues of P. semisulcatus might be due to the vital role of these fatty acids in membrane structures of shrimp (Farkas, 1979;Schlechtriem et al, 2006;Werbrouck et al, 2016a). The results of Çiçek et al (2013), in which a 21% increase in PUFA levels during even short-starvation (1-3 weeks) followed by a 40% decrease during the two-weeks of refeeding period, also support the above hypothesis.…”

Section: Discussionmentioning

confidence: 99%

“…In line with suggestion of Perez-Velazquez et al(2003), who studied fatty acids in association with low temperature in L. vannamei, we also think that high levels of PUFA observed during the long cold-exposure under partial food consumption might be the results of both selective retention of these long-chain fatty acids and, to some extent, some exogenous contribution from dietary source. Werbrouck et al (2016a) was also proposed the selective retention concept in copepods under food deprivation at various temperatures. These authors stated that ambient temperature affected the levels of FA depletion as well as FA mobilization and that a mixed diet could reduce the impact of heat stress on the copepod's membrane structure.…”

Section: Discussionmentioning

confidence: 99%

“…A small number of studies have dealth with the effects of temperature and/or food restriction on various tissues lipid contents particularly fatty acid dynamics in marine shrimps and most of the knowledge in this field is derived from studies on other crustaceans (Goss &Bunting, 1983;Schlechtriem, Arts, & Zellmer, 2006;Werbrouck, Van Gansbeke, Vanreusel, & De Troch, 2016a;Werbrouck, Van Gansbeke, Vanreusel, Mensens, & De Troch, 2016b). It has been reported that many poikilothermic organisms adapt to changing water temperatures by modifying the degree of unsaturation of their lipids (Goss et al, 1983;Pruitt, 1990).…”

Section: Introductionmentioning

confidence: 99%

“…In a study with the copepod Daphnia pulex, Schlechtriem et al (2006) showed that a long-term exposure to cold temperature caused a significant increase in eicosapentaenoic acid (20:5n-3, EPA), while arachidonic acid (ARA) and EPAwere highly conserved during starvation. Werbrouck et al (2016a) studied several intervals of food deprivation under two temperatures (4 and 15°C) in copepods and found that ambient water temperature affected both the degree of FA depletion and mobilization…”

Section: Introductionmentioning

confidence: 99%

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KUMLU¹,

KINAY²,

YILMAZ³

et al. 2019

Turk. J. Fish. Aquat. Sci.

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Response of proximate and fatty acid (FA) composition of the green tiger shrimp Penaeus semisulcatus in relation to changing water temperatures during over wintering (for 8-weeks at 11-16°C) and then refeeding periods (at 28°C for a further 2-weeks) was investigated in this study. The shrimps did not appear to need to catabolise their either body proteins or lipids during the overwintering period, as the feeding was not ceased completely. While muscle protein, ash and dry matter compositions of the shrimps did not change by changing temperature, lipid increased from 1% during the overwintering period to 1.2% during the recovery period (P<0.01). Saturated FAs (SFA), mono-unsaturated FAs (MUFA), and partially poly-unsaturated FAs (n-6 PUFA) declined, on the contrary, n-3 PUFA significantly rose in the muscle and hepatopacreas during the cold exposure. Shrimps tended to consume especially SFA and, to a lesser degree, MUFA under sub-optimal conditions (P<0.01). PUFA and LC-PUFA appeared to be selectively retained or even elevated in the shrimp muscle during the cold season. Over wintering strategy might generate additional benefit for a heathier food supply for human nutrition, as shrimps can be enriched for LC-PUFA, by simply keeping them under cold water temperatures (10-15°C) during overwintering period, with minimal cost of feeding.

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Fatty acid composition as a function of latitude in barnacle cyprid larvae

Leal,

Thyrring,

Flores

et al. 2024

Limnology & Oceanography

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Broadly distributed species need to perform well in a range of environmental conditions, but knowledge of how wide‐ranging marine larvae perform along latitudinal gradients remains limited. The fatty acid composition of larvae is important for their physiological responses to changing conditions. Here, we investigated the fatty acid composition of the last, non‐feeding stage of barnacle larvae (cyprids) using an integrative (larvae–environment) and comparative (latitudinal) approach. We measured fatty acids in the pelagic particulate matter and cyprids from Chthamalus bisinuatus, Chthamalus proteus, and Semibalanus balanoides from tropical to polar (Arctic) latitudes to identify potential food sources during the feeding larval stages (nauplius) that precede the cyprids and to ascertain larval capacity to integrate neutral (energetic) and polar (structural) fatty acids. We demonstrate that particulate matter in tropical waters mainly consisted of low‐quality saturated fatty acids derived from detrital pathways, while particulate matter from polar waters was rich in polyunsaturated fatty acids originating from living microalgae. Across the studied regions, neutral fatty acids were assimilated from various food sources including diatoms, dinoflagellates, detritus, and microeukaryotes. Cyprids consistently retained higher essential fatty acid levels than the relative share in the particulate matter. Particularly, the essential docosahexaenoic acid (22:6ω3), which was scarce in the particulate matter, was highly retained across all species but highest for the tropical cyprids. We argue that this latitudinal pattern in fatty acid retention is related to periods of reduced nutrient intake, increased energetic and/or synthetic requirements, and responses to physical large‐scale differences in environmental conditions.

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Temperature Affects the Use of Storage Fatty Acids as Energy Source in a Benthic Copepod (Platychelipus littoralis, Harpacticoida)

Cited by 28 publications

References 68 publications

Projected declines in global DHA availability for human consumption as a result of global warming

Projected declines in global DHA availability for human consumption as a result of global warming

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Fatty acid composition as a function of latitude in barnacle cyprid larvae

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