Nutritional value of different food sources for the benthic Daphnidae Simocephalus vetulus: role of fatty acids

Bec, Alexandre; Desvilettes, Christian; Fontvieille, Dominique; Bourdier, Gilles

doi:10.1127/0003-9136/2003/0156-0145

Cited by 48 publications

(52 citation statements)

References 39 publications

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“…On the other hand, 18:0, 18:2ω6, 18:4ω3, 20:4ω6 and 22:6ω3 displayed only moderate enrichment ( Table 2) (Viso & Marty 1993, St. John & Lund 1996, Dalsgaard et al 2003, it is likely that the increase in δ 13 C in settled fish reflects increased reliance on epiphytic or benthic diatoms. Moreover, 15:0 is often used as a bacterial biomarker (Bec et al 2003, Dalsgaard et al 2003, Jaschinski et al 2008, and its enriched δ 13 C values suggest the benthic origin of the bacterial carbon on which settled fish rely, probably by ingesting sediment directly. The particularly high mean δ 13 C values of 14:0, 15:0, 16:0 and 16:1ω7 in the 20-30 mm fish (-7.6 to -10.9 ‰ for 14:0 and 16:0, respectively, in NLs) were close to the bulk δ 13 C values of macroalgae (Table 2, Fig.…”

Section: Discussion δ δ 13 C Values Of Individual Fasmentioning

confidence: 99%

Nutritional importance of minor dietary sources for leaping grey mullet Liza saliens (Mugilidae) during settlement: insights from fatty acid δ13C analysis

Koussoroplis¹,

Bec²,

Perga³

et al. 2010

Mar. Ecol. Prog. Ser.

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Section: Discussion δ δ 13 C Values Of Individual Fasmentioning

confidence: 99%

Nutritional importance of minor dietary sources for leaping grey mullet Liza saliens (Mugilidae) during settlement: insights from fatty acid δ13C analysis

Koussoroplis¹,

Bec²,

Perga³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…nutrition are scarce. Available data suggest that, although rich in nitrogen and phosporus, ciliates are less nutritious for daphnids than many algae (DeBiase et al 1990, Sanders et al 1996, Bec et al 2003a. The fatty acid composition of ciliates seems to be highly diverse and points to speciesspecific differences in their capacity to synthesize PUFAs potentially important for zooplankton growth (Kaneshiro et al 1979, Desvilettes et al 1997, Sul et al 2000, Klein Breteler et al 2004.…”

Section: Introductionmentioning

confidence: 99%

Trophic upgrading of picocyanobacterial carbon by ciliates for nutrition of Daphnia magna

Martin‐Creuzburg¹,

Bec²,

Elert³

2005

Aquat. Microb. Ecol.

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Unicellular picocyanobacteria, such as species of the genus Synechococcus, are unsuitable for supporting growth and reproduction of Daphnia spp. In Synechococcus spp., long-chain polyunsaturated fatty acids (PUFAs) and sterols are absent, which leads to a low carbon transfer efficiency at the picocyanobacteria-Daphnia spp. interface. Herein, we address the question as to whether ciliates can serve as a trophic link between picocyanobacterial production and Daphnia spp. production, thereby upgrading the nutritional value of a picocyanobacterial food source by producing essential lipids such as PUFAs or sterols. In simplified experimental food chains consisting of 1 of 2 different Synechococcus strains, the ciliates Colpidium campylum or Cyclidium sp., and D. magna, we provided evidence that predation on ciliates by Daphnia spp. allows access to picocyanobacterial production. Since daphnids are primarily sterol-limited when grown on the picocyanobacteria Synechococcus spp., the observed trophic upgrading of Synechococcus food-quality by intermediary ciliates is most probably due to the addition of sterols or sterol-like compounds that (at least partly) release Daphnia spp. from sterol limitation. The absence of sterols in the ciliates used in the present study suggests that tetrahymanol and/or hopanoids provide functional equivalents of sterols not only in ciliates but also in Daphnia spp., thereby leading to enhanced growth of the cladocerans.

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“…The Cladoceran M. brachiata have the capacity to synthesis ARA and EPA through the bioconvert process of dietary precursors like LIN and ALA respectively present in the Scenedesmus sp. In this difference, the previous information on different species of Daphnia does not show ARA as well as an exhibited very low amount of EPA in wild-type [27]. In addition, its diet with microalgae Cryptomonas sp showed the little amount of Docosahexaenoic acid (DHA) and diet with Scenedesmus sp., showed the little amount of ARA and high amount of EPA [2].…”

Section: Discussionmentioning

confidence: 52%

Comparison of fatty acids profile and antioxidant enzyme level of cladoceran Moina brachiata (jurine, 1820) from freshwater bodies of Chennai

Ramanibai

2017

Int. J. Sci. World

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Omega-3 family (ω-3) of polyunsaturated fatty acids (PUFA) was considered as an important biochemical for the physiological function of all trophic level animals. In this study, we demonstrated the effect of algal diet on fatty acids composition (FA), antioxidant enzymes and DNA damage of Moina brachiata from Adyar River and Kolavoi Lake. 8 different fatty acids were identified in M. brachiata through GC-MS analysis and we noticed two PUFA (Eicosapentaenoic acid, EPA 20:5 (ω-3); Linoleic acid 18:2 (ω-6)). The dietary fatty acid accumulation and bioconversion capacity of M. brachiata have differed in two lakes fed with algal diet. The high amount of ω-3 PUFA was observed in M. brachiata fed with Scenedesmus sp. in Kolavoi Lake (35.84%) followed by Adyar River (33.78%). PUFA content was significantly declined in wild M. brachiata of Adyar River (17.44%) followed by Kolavoi lake (25.78%). On the other hand, high level of Malondialdehyde (MDA) and decreasing level of key antioxidant enzymes likes Superoxide dismutase (SOD), Catalase (CAT), Glutathione peroxidase (GSH) and DNA damage were observed in wild M. brachiata of Adyar River. Hence, the algal diet could enhance the level of antioxidant enzyme activity by decreasing the level of MDA and it does not show DNA damage on M. brachiata. Overall, the results obtained in this study explored that Scenedesmus sp., has the ability to enhance the PUFA content, antioxidant enzyme activity and prevent the DNA damage in M. brachiata which was declined in the wild animal due to the environmental stress conditions.

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Nutritional value of different food sources for the benthic Daphnidae Simocephalus vetulus: role of fatty acids

Cited by 48 publications

References 39 publications

Nutritional importance of minor dietary sources for leaping grey mullet Liza saliens (Mugilidae) during settlement: insights from fatty acid δ13C analysis

Nutritional importance of minor dietary sources for leaping grey mullet Liza saliens (Mugilidae) during settlement: insights from fatty acid δ13C analysis

Trophic upgrading of picocyanobacterial carbon by ciliates for nutrition of Daphnia magna

Comparison of fatty acids profile and antioxidant enzyme level of cladoceran Moina brachiata (jurine, 1820) from freshwater bodies of Chennai

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