Effects of dietary polyunsaturated fatty acids on tissue monounsaturate and saturate proportions in two insect species

Stanley-Samuelson, David W.; Rapport, E.W.; Dadd, R. H.

doi:10.1016/0305-0491(85)90399-2

Cited by 8 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, if mosquitoes do not need these FAs to survive, they need these substances to fly [59] . If the nature and effect of essential FAs remain unknown in Drosophila , the ingestion of yeast influence the quantity and quality of FA stored [60] , [61] . A change of FA preference could also broaden food resources and reduce food competition.…”

Section: Discussionmentioning

confidence: 99%

Fatty-Acid Preference Changes during Development in Drosophila melanogaster

et al. 2011

View full text Add to dashboard Cite

Fatty-acids (FAs) are required in the diet of many animals throughout their life. However, the mechanisms involved in the perception of and preferences for dietary saturated and unsaturated FAs (SFAs and UFAs, respectively) remain poorly explored, especially in insects. Using the model species Drosophila melanogaster, we measured the responses of wild-type larvae and adults to pure SFAs (14, 16, and 18 carbons) and UFAs (C18 with 1, 2, or 3 double-bonds). Individual and group behavioral tests revealed different preferences in larvae and adults. Larvae preferred UFAs whereas SFAs tended to induce both a strong aversion and a persistent aggregation behavior. Adults generally preferred SFAs, and laid more eggs and had a longer life span when ingesting these substances as compared to UFAs. Our data suggest that insects can discriminate long-chain dietary FAs. The developmental change in preference shown by this species might reflect functional variation in use of FAs or stage-specific nutritional requirements, and may be fundamental for insect use of these major dietary components.

show abstract

Section: Discussionmentioning

confidence: 99%

Fatty-Acid Preference Changes during Development in Drosophila melanogaster

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The three faster cold hardening treatments show more subtle responses characterized by an increase of the polyunsaturated fatty acid linoleic acid, 18:2(n‐6), primarily at the expense of 18:1(n‐9) and 16:0 fatty acids. The increases in 18:2(n‐6) are likely to be due to incorporation of new phospholipids because desaturation of existing 18:1(n‐9) phospholipid fatty acids requires the delta12 desaturase enzyme, which is absent in D. melanogaster (Stanley‐Samuelson et al , 1985; Cripps et al , 1986). By contrast with the faster cold hardening treatments, slow cooling shows an increase in 18:1(n‐7) and particularly in 16:1(n‐7) at the expense of 16:0, 18:0 and 18:2(n‐6) fatty acids.…”

Section: Discussionmentioning

confidence: 99%

Reorganization of membrane lipids during fast and slow cold hardening in Drosophila melanogaster

Overgaard

Sørensen

Petersen

et al. 2006

Physiological Entomology

View full text Add to dashboard Cite

Abstract. Rapid cold hardening is a naturally occurring phenomenon in insects that is thought to be responsible for increased cold tolerance during diurnal variations in temperature. The underlying physiological mechanisms are still not fully resolved but, in Drosophila melanogaster (Meigen 1830), rapid cold hardening is accompanied by specific changes in the membrane lipid composition. To further understand the link between rapid cold hardening and adjustments in the membrane lipid composition, the present study investigates how different rates of cooling affect thermotolerance and the composition of phospholipid fatty acids. Female Drosophila are cooled gradually from 25 to 0 °C at 0.01, 0.05, 0.1 or 0.5 °C min −1 , respectively, and, subsequently, phospholipid fatty acid composition and survival after a 1-h cold shock at −5 °C is measured. The rapid cold hardening treatments all influence cold tolerance differently so that short and intermediate rapid cold hardening treatments (0.05, 0.1 or 0.5 °C min −1 cooling rates) increase cold shock survival, whereas the slow cooling treatment (0.01 °C min −1 ) decreases survival relative to an untreated control. The intermediate rapid cold hardening treatments (0.05 or 0.1 °C min −1 ) induce a similar type of response characterized by an increase in the molar percentage of linoleic acid, 18:2(n-6), at the expense of 16:0 and 18:1(n-9), which leads to an increase in the degree of unsaturation. The slowest cooling treatment (0.01 °C min −1 ) results in a large increase in cis -16:1(n-7) and significant reductions in the saturated phospholipid fatty acids 16:0, 18:0 and the unsaturated 16:1(n-9) and 18:2(n-6) fatty acids. These changes cause a slight decrease in the average length of the phospholipid fatty acids and an increase in the overall ratio of unsaturated vs. saturated fatty acids. These findings demonstrate that the rate of cooling is important for both the reorganization of membrane lipids, and for the degree of acquired cold tolerance during rapid cold hardening, and they suggest an important role for rapid cold hardening during diurnal rather than seasonal temperature changes.

show abstract

“…Fatty acid compositions are not fixed in insects and can change seasonally to perform special functions that may be critical for survival. In particular, development (Bashan et al, 2002;Bozkus, 2003), diet (Rock et al, 1965;Bozkus, 2003;Turunen, 1974;Barnett & Berger, 1970;Grau & Terriere, 1971;Earle et al, 1967;Stanley-Samuelson & Dadd, 1981;Stanley-Samuelson et al, 1985) and diapause status (Valder et al, 1969;Azuma et al, 1989;Shimizu, 1992;Hodkova et al, 1999;Bashan et al, 2002;Bashan & Cakmak, 2005) exert strong influences on the shape of fatty acid profiles.…”

Section: Introductionmentioning

confidence: 99%

Comparison of fatty acid composition in total lipid of diapause and non‐diapause larvae of Cydia pomonella (Lepidoptera: Tortricidae)

et al. 2007

View full text Add to dashboard Cite

Seasonal changes in the fatty acid composition of the total lipid extracted from the whole body of Cydia pomonella L. larvae were determined by gas chromatography. The six most abundant fatty acids in both non‐diapause and diapause larvae of codling moth were oleic (35%–39%), palmitic (23%–33%), linoleic (16%–30%), palmitoleic (5%–10%), stearic (1.5%–3.0%) and linolenic acids (1.0%–2.5%). This represents a typical complement of Lepidopteran fatty acids. The fatty acid composition of total lipid of C. pomonella larvae was related to diapause. In similarity to most other reports, the proportion of unsaturated fatty acids increased in diapause initiation state. The total lipid of diapause larvae contained more linoleic acid (25.8%vs. 16.1%) and less palmitic acid (24.7%vs. 33.4%), than that of non‐diapause larvae. The weight percentage of linoleic acid (C18:2) increased from 16% to 26% from early‐August through early‐September during transition to diapause, while palmitic acid (C16:0) decreased from 33% to 25% at the same time. These changes resulted in an increase in the ratio of unsaturated to saturated fatty acids (UFA/SFA) from 1.72 in non‐diapause larvae to 2.63 in diapause larvae.

show abstract

Effects of dietary polyunsaturated fatty acids on tissue monounsaturate and saturate proportions in two insect species

Cited by 8 publications

References 24 publications

Fatty-Acid Preference Changes during Development in Drosophila melanogaster

Fatty-Acid Preference Changes during Development in Drosophila melanogaster

Reorganization of membrane lipids during fast and slow cold hardening in Drosophila melanogaster

Comparison of fatty acid composition in total lipid of diapause and non‐diapause larvae of Cydia pomonella (Lepidoptera: Tortricidae)

Contact Info

Product

Resources

About