Fatty acid compositions of phospholipids and triacylglycerols from selected terrestrial arthropods

Uscian, John M.; Stanley-Samuelson, David W.

doi:10.1016/0305-0491(94)90200-3

Cited by 13 publications

(8 citation statements)

References 27 publications

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“…The study was conducted in woodland consisting of separate habitat plots dominated by either deciduous or coniferous trees, with higher availability of lepidopteran caterpillars in the deciduous habitat (Isaksson et al ). Caterpillars are the main food source for great tits during spring and the availability of caterpillars has a great impact on fledgling success (Perrins ), and they contain proportionally high levels of α‐LNA and low levels of AA compared to other prey items eaten by great tits (Table , and Cookman et al , Uscian and Stanley‐Samuelson ). Thus, we predicted to find a proportionally higher level of α‐LNA and a lower level of AA in tits from the deciduous compared to the coniferous habitat.…”

Section: Discussionmentioning

confidence: 99%

“…The habitat types are known to differ in availability of α‐LNA‐rich caterpillars (caterpillar‐rich deciduous habitat versus caterpillar‐poor coniferous habitat) (Cookman et al , Perrins , Isaksson ). In addition, in coniferous habitats, great tits complement their caterpillar‐scarce diet with spiders, wasps, beetles and other adult insects (Gosler ), which are rich in AA (Uscian and Stanley‐Samuelson ). However, whether this diet difference is reflected in the FA levels in plasma of great tits is unknown.…”

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The effects of spatial and temporal ecological variation on fatty acid compositions of wild great tits Parus major

Isaksson

Hanson

Burdge

2014

Journal of Avian Biology

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In birds, fatty acids (FA) have three main functions; they are structural components of cell membranes, metabolic fuel, and infl ammatory molecules. Environmental factors, such as diet and ambient temperature, aff ect FA composition, thereby function and ultimately fi tness. Th us, variation in FA compositions can be the underlying mechanism for varying performance of birds in diff erent habitats. Here we examine variation in plasma FA composition in nestling and adult great tits Parus major , between 1) deciduous and coniferous, and 2) sun-exposed and shaded habitats.Th e main results revealed that nestlings had a higher proportion of α -linolenic acid ( α -LNA) in deciduous habitats and arachidonic acid in coniferous habitats. Th is refl ects a diff erence in caterpillar availability between habitats with the deciduous habitat being caterpillar-rich, whereas the coniferous habitats are rich in spiders. In addition, α -LNA increased with nestling body condition in the coniferous habitat, supporting the importance of caterpillars for fl edging success in this species. In line with dietary intake, the proportion of the essential α -LNA and linoleic acid (LA) increased over the course of the day for all birds. In the deciduous habitat, adult females showed a positive association between LA and body condition. Furthermore, habitat sun-exposure showed signifi cant interactions with body condition for polyunsaturated FAs in nestlings, and with saturated FA in adult males, which is in accordance with the homeoviscous hypothesis stating that the proportion of saturated FA should decrease with decreasing ambient temperature.Taken together, small-scale heterogeneity in habitat structure signifi cantly infl uences FA compositions of great tits. Many of the results can be linked to dietary, and possibly, ambient temperature diff erences between habitats. Th ese habitat eff ects on FA compositions can lead to diff erent capacities of individual birds to deal with infections and low temperatures, two stressors that cause major mortality among wild birds.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

The effects of spatial and temporal ecological variation on fatty acid compositions of wild great tits Parus major

Isaksson

Hanson

Burdge

2014

Journal of Avian Biology

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“…Holmstrup et al (2002) fed baker's yeast to F. candida and observed very similar fatty acid compositions to those reported here. Terrestrial insects generally contain small abundances of PUFAs (Stanley-Samuelson et al 1988), usually only a few percent of the total fatty acids, while non-insect terrestrial arthropods such as spiders and millipedes may contain greater abundances of PUFAs (Uscian and Stanley-Samuelson 1994). Aquatic insects are known to contain much greater amounts of PUFAs (Ghioni et al 1996;Sushchik et al 2003); this is assumed to be an adaptation to low-temperature environments.…”

Section: Collembolan Lipid Compositionsmentioning

confidence: 99%

Lipid content and carbon assimilation in Collembola: implications for the use of compound-specific carbon isotope analysis in animal dietary studies

et al. 2004

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In an effort to understand the relationships between both the lipid content and delta13C values of Collembola and their diet, isotopically labelled (C3 and C4) bakers' yeasts were cultured and fed to two Collembolan species, Folsomia candida and Proisotoma minuta. The fatty acid composition of Collembola generally reflected that of the diet with the addition of the polyunsaturated components 18:2(n-6), 20:4(n-6) and 20:5(n-3), which appeared to be biosynthesised by the Collembola. Whilst ergosterol was the only sterol detected in the yeast diets, only cholesterol was detected in Collembola, and although the delta13C values of diet and consumer sterols differed by >2 per thousand, the delta13C values indicated that cholesterol was derived entirely from dietary sterol. The bulk delta13C values of Collembola were similar to those of the diets, but fatty acid delta13C values did not necessarily reflect those of the dietary fatty acids, indicating significant de novo biosynthesis of fatty acids within Collembola. Switching the Collembola from C3 to C4 yeast enabled the determination of the rates of incorporation of dietary carbon into Collembolan lipids, and showed that half-lives of the incorporation of dietary carbon varied between 1.5 and 5.8 days at 20 degrees C. Cholesterol exhibited the slowest rate of incorporation in both species, while bulk carbon in F. candida possessed an intermediate rate. These results demonstrate that an understanding of the sources of isotopic fractionation and the role of biochemistry in regulating the delta13C values of individual compounds is important in the application of compound-specific isotopic analysis to the study of animal trophic activities.

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“…Other terrestrial arthropods also differ from terrestrial insects (Uscian & Stanley‐Samuelson, ). AA made up substantial proportions of total PL fatty acids prepared from selected tissues of the spider, Grammastola , about 9% of leg muscle, 8% of central nervous system and fang muscle, 1.6% of internal reproductive tissue and 9% of spinning tissue, with fairly similar findings for 20:5 ( n ‐3).…”

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Why most insects have very low proportions of C20 polyunsaturated fatty acids: The oxidative stress hypothesis

Stanley

Kim

2019

Arch Insect Biochem Physiol

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Fatty acid compositions of phospholipids and triacylglycerols from selected terrestrial arthropods

Cited by 13 publications

References 27 publications

The effects of spatial and temporal ecological variation on fatty acid compositions of wild great tits Parus major

The effects of spatial and temporal ecological variation on fatty acid compositions of wild great tits Parus major

Lipid content and carbon assimilation in Collembola: implications for the use of compound-specific carbon isotope analysis in animal dietary studies

Why most insects have very low proportions of C20 polyunsaturated fatty acids: The oxidative stress hypothesis

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