Zooplankton nutrition, storage and fecal lipid composition in different water masses associated with the Agulhas and Subtropical Fronts

Mayzaud, Patrick; Laureillard, J.; Merien, D.; Brinis, Anissa; Godard, Cyril; Razouls, Suzanne; Labat, Jean‐Philippe

doi:10.1016/j.marchem.2007.07.001

Cited by 22 publications

(13 citation statements)

References 48 publications

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“…However, more sampling in this zone would have been necessary to support this hypothesis. The influence of oceanic front in increasing zooplankton abundance, biomass and grazing activity has been well documented in the Southern Atlantic (Mayzaud et al 2007;Richoux 2011;Lopes et al 2015). Recently, Woodson and Litvin (2014), incorporating hydrological patchiness and front into current fishery models, show the crucial role of oceanic fronts in sustaining global marine fishery production.…”

Section: Figmentioning

confidence: 99%

Biochemical composition and energy content of size-fractionated zooplankton east of the Kerguelen Islands

et al. 2019

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Food quality is recognized as a key parameter of food web functioning in which zooplankton plays a crucial role not only in linking lower to upper trophic levels but also in transforming the quality of the organic matter available to predators. The influence of size and taxonomic group composition of zooplankton in these processes was assessed in eastern Kerguelen waters (Southern Ocean) at the onset of the spring bloom in 2011. Biochemical (lipids, proteins and carbohydrates) and elemental (carbon and nitrogen) composition were measured in five size-fractions of bulk zooplankton ranging from 80 µm to > 2000 µm and in large copepods, euphausiids, annelids and salps, and energy content was derived from biochemical contents. Proteins were the dominant component of zooplankton dry weight (21.5% dw), followed by lipids (8.9% dw), soluble carbohydrates (2.2% dw) and insoluble carbohydrates (1.0% dw). A concentration increase with zooplankton size for all biochemical components was observed, particularly stronger for proteins and lipids. Copepods and salps provided, respectively, the highest and the lowest amount of lipids and energy.

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Section: Figmentioning

confidence: 99%

Biochemical composition and energy content of size-fractionated zooplankton east of the Kerguelen Islands

et al. 2019

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“…It was either deduced from the species morphological appearance [lacking a feeding basket and having extended thoracic appendages most likely assisting predation (Mauchline et al 1989)] and confirmed by gut content analyses (Barange et al 1991;Gurney et al 2001) or suggested from stable isotope analysis (Gurney et al 2001) and analysis of fatty acid trophic markers (Mayzaud et al 2007;Cartes 2011).…”

Section: Total Lipids: Energetic Valuementioning

confidence: 99%

“…To date, lipid data on N. megalops are mainly restricted to the South Atlantic Ocean i.e. the Agulhas Current (Mayzaud et al 2007;Richoux 2011), the Mediterranean Sea northwest of Mallorca (Cartes 2011) and the Sargasso Sea (Boyd et al 1978). In these areas, the species shows a carnivorous feeding mode and a very low total lipid content mainly stored as polar lipids.…”

Section: Introductionmentioning

confidence: 99%

Lipid composition and trophic relationships of krill species in a high Arctic fjord

2014

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Our study deals with the lipid biochemistry of the krill community in the ecosystem of the high Arctic Kongsfjord (Svalbard). During the last decades, Kongsfjord experienced a change in krill species composition due to recent increased advection of Atlantic water masses carrying characteristic boreal as well as subtropical-boreal euphausiids into the ecosystem. The lipid biochemistry and trophic relationships of the species recently inhabiting the Arctic water masses are scarcely known, although a change in a krill population may have a significant impact on the ecosystem. A comparison of nutrition and energy storage strategies, stable isotopes, lipid profiles and fatty acid compositions showed remarkable differences between the krill species. These reflected the diverse feeding behaviours and specific adaptations to the environments of their origin: the boreal Meganyctiphanes norvegica and subtropical Nematoscelis megalops appear more carnivorous and have significantly lower mean lipid contents (29 and 10 %, respectively) and a different energy storage pattern (triacylglycerols and polar lipids, respectively) than the arctoboreal Thysanoessa inermis, which consists of up to 54 % of lipids mainly stored as wax esters ([40 %). These differences may have significant implications for the rapidly changing marine food web of Kongsfjord-especially for higher trophic levels relying on the nutritional input of animal lipids.

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“…Fatty acid profiles provide a large amount of information on the development, reproduction, health and feeding ecology of organisms [21] , [22] . Previous studies have stressed that mosquitoes are unable to elongate the 18C poly unsaturated FAs and thus C18, C20 and C22 polyunsaturated fatty acids are essential for larval development, adult survival and flight [23] .…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Diet Quality, How It Controls Fatty Acid Profiles, Isotope Signatures and Stoichiometry in the Malaria Mosquito Anopheles arabiensis

Hood‐Nowotny

Schwarzinger

et al. 2012

PLoS ONE

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BackgroundKnowing the underlying mechanisms of mosquito ecology will ensure effective vector management and contribute to the overall goal of malaria control. Mosquito populations show a high degree of population plasticity in response to environmental variability. However, the principle factors controlling population size and fecundity are for the most part unknown. Larval habitat and diet play a crucial role in subsequent mosquito fitness. Developing the most competitive insects for sterile insect technique programmes requires a “production” orientated perspective, to deduce the most effective larval diet formulation; the information gained from this process offers us some insight into the mechanisms and processes taking place in natural native mosquito habitats.Methodology/Principal FindingsFatty acid profiles and de-novo or direct assimilation pathways, of whole-individual mosquitoes reared on a range of larval diets were determined using pyrolysis gas chromatograph/mass spectrometry. We used elemental analysis and isotope ratio mass spectrometry to measure individual-whole-body carbon, nitrogen and phosphorous values and to assess the impact of dietary quality on subsequent population stoichiometry, size, quality and isotopic signature. Diet had the greatest impact on fatty acid (FA) profiles of the mosquitoes, which exhibited a high degree of dietary routing, characteristic of generalist feeders. De-novo synthesis of a number of important FAs was observed. Mosquito C:N stoichiometry was fixed in the teneral stage. Dietary N content had significant influence on mosquito size, and P was shown to be a flexible pool which limited overall population size.Conclusions/SignificanceDirect routing of FAs was evident but there was ubiquitous de-novo synthesis suggesting mosquito larvae are competent generalist feeders capable of survival on diet with varying characteristics. It was concluded that nitrogen availability in the larval diet controlled teneral mosquito size and that teneral CN ratio is a sex- and species-specific fixed parameter. This finding has significant implications for overall mosquito competitiveness and environmental management.

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Zooplankton nutrition, storage and fecal lipid composition in different water masses associated with the Agulhas and Subtropical Fronts

Cited by 22 publications

References 48 publications

Biochemical composition and energy content of size-fractionated zooplankton east of the Kerguelen Islands

Biochemical composition and energy content of size-fractionated zooplankton east of the Kerguelen Islands

Lipid composition and trophic relationships of krill species in a high Arctic fjord

An Analysis of Diet Quality, How It Controls Fatty Acid Profiles, Isotope Signatures and Stoichiometry in the Malaria Mosquito Anopheles arabiensis

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