More than just sugar: Allocation of nectar amino acids and fatty acids in a lepidopteran

Eran Levin, Marshall D. McCue, Goggy Davidowitz

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The ability to allocate resources, even when limited, is essential for survival and fitness. We examine how nutrients that occur in minute amounts are allocated among reproductive, somatic, and metabolic demands. In addition to sugar, flower nectars contain two macronutrients—amino acids and fatty acids. We created artificial nectars spiked with13C-labelled amino acids and fatty acids and fed these to adult moths (Manduca sexta: Sphingidae) to understand how they allocate these nutrients among competing sinks (reproduction, somatic tissue, and metabolic fuel). We found that both essential and nonessential amino acids were allocated to eggs and flight muscles and were still detectable in early-instar larvae. Parental-derived essential amino acids were more conserved in the early-instars than non-essential amino acids. All amino acids were used as metabolic fuel, but the non-essential amino acids were oxidized at higher rates than essential amino acids. Surprisingly, the nectar fatty acids were not vertically transferred to offspring, but were readily used as a metabolic fuel by the moth, minimizing losses of endogenous nutrient stores. We conclude that the non-carbohydrate components of nectar may play important roles in both reproductive success and survival of these nectar-feeding animals.

Original languageEnglish (US)
Article number20162126
JournalProceedings of the Royal Society B: Biological Sciences
Volume284
Issue number1848
DOIs
StatePublished - Feb 8 2017

Fingerprint

Plant Nectar
nectar
Sugars
sugar
Fatty Acids
fatty acid
amino acid
Lepidoptera
Essential Amino Acids
fatty acids
sugars
Amino Acids
amino acids
Nutrients
Moths
essential amino acids
Food
moths
instars
nectar feeding

Keywords

  • Allocation
  • Amino acids
  • Fatty acids
  • Lepidoptera
  • Nectar
  • Stable isotope

ASJC Scopus subject areas

  • Medicine(all)
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

Cite this

More than just sugar : Allocation of nectar amino acids and fatty acids in a lepidopteran. / Levin, Eran; McCue, Marshall D.; Davidowitz, Goggy.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 284, No. 1848, 20162126, 08.02.2017.

Research output: Contribution to journalArticle

@article{d98d170b11e64657897eb4a4235f2104,
title = "More than just sugar: Allocation of nectar amino acids and fatty acids in a lepidopteran",
abstract = "The ability to allocate resources, even when limited, is essential for survival and fitness. We examine how nutrients that occur in minute amounts are allocated among reproductive, somatic, and metabolic demands. In addition to sugar, flower nectars contain two macronutrients—amino acids and fatty acids. We created artificial nectars spiked with13C-labelled amino acids and fatty acids and fed these to adult moths (Manduca sexta: Sphingidae) to understand how they allocate these nutrients among competing sinks (reproduction, somatic tissue, and metabolic fuel). We found that both essential and nonessential amino acids were allocated to eggs and flight muscles and were still detectable in early-instar larvae. Parental-derived essential amino acids were more conserved in the early-instars than non-essential amino acids. All amino acids were used as metabolic fuel, but the non-essential amino acids were oxidized at higher rates than essential amino acids. Surprisingly, the nectar fatty acids were not vertically transferred to offspring, but were readily used as a metabolic fuel by the moth, minimizing losses of endogenous nutrient stores. We conclude that the non-carbohydrate components of nectar may play important roles in both reproductive success and survival of these nectar-feeding animals.",
keywords = "Allocation, Amino acids, Fatty acids, Lepidoptera, Nectar, Stable isotope",
author = "Eran Levin and McCue, {Marshall D.} and Goggy Davidowitz",
year = "2017",
month = "2",
day = "8",
doi = "10.1098/rspb.2016.2126",
language = "English (US)",
volume = "284",
journal = "Philosophical transactions of the Royal Society of London. Series B: Biological sciences",
issn = "0962-8436",
publisher = "Royal Society of London",
number = "1848",

}

TY - JOUR

T1 - More than just sugar

T2 - Allocation of nectar amino acids and fatty acids in a lepidopteran

AU - Levin, Eran

AU - McCue, Marshall D.

AU - Davidowitz, Goggy

PY - 2017/2/8

Y1 - 2017/2/8

N2 - The ability to allocate resources, even when limited, is essential for survival and fitness. We examine how nutrients that occur in minute amounts are allocated among reproductive, somatic, and metabolic demands. In addition to sugar, flower nectars contain two macronutrients—amino acids and fatty acids. We created artificial nectars spiked with13C-labelled amino acids and fatty acids and fed these to adult moths (Manduca sexta: Sphingidae) to understand how they allocate these nutrients among competing sinks (reproduction, somatic tissue, and metabolic fuel). We found that both essential and nonessential amino acids were allocated to eggs and flight muscles and were still detectable in early-instar larvae. Parental-derived essential amino acids were more conserved in the early-instars than non-essential amino acids. All amino acids were used as metabolic fuel, but the non-essential amino acids were oxidized at higher rates than essential amino acids. Surprisingly, the nectar fatty acids were not vertically transferred to offspring, but were readily used as a metabolic fuel by the moth, minimizing losses of endogenous nutrient stores. We conclude that the non-carbohydrate components of nectar may play important roles in both reproductive success and survival of these nectar-feeding animals.

AB - The ability to allocate resources, even when limited, is essential for survival and fitness. We examine how nutrients that occur in minute amounts are allocated among reproductive, somatic, and metabolic demands. In addition to sugar, flower nectars contain two macronutrients—amino acids and fatty acids. We created artificial nectars spiked with13C-labelled amino acids and fatty acids and fed these to adult moths (Manduca sexta: Sphingidae) to understand how they allocate these nutrients among competing sinks (reproduction, somatic tissue, and metabolic fuel). We found that both essential and nonessential amino acids were allocated to eggs and flight muscles and were still detectable in early-instar larvae. Parental-derived essential amino acids were more conserved in the early-instars than non-essential amino acids. All amino acids were used as metabolic fuel, but the non-essential amino acids were oxidized at higher rates than essential amino acids. Surprisingly, the nectar fatty acids were not vertically transferred to offspring, but were readily used as a metabolic fuel by the moth, minimizing losses of endogenous nutrient stores. We conclude that the non-carbohydrate components of nectar may play important roles in both reproductive success and survival of these nectar-feeding animals.

KW - Allocation

KW - Amino acids

KW - Fatty acids

KW - Lepidoptera

KW - Nectar

KW - Stable isotope

UR - http://www.scopus.com/inward/record.url?scp=85012041081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012041081&partnerID=8YFLogxK

U2 - 10.1098/rspb.2016.2126

DO - 10.1098/rspb.2016.2126

M3 - Article

C2 - 28148746

AN - SCOPUS:85012041081

VL - 284

JO - Philosophical transactions of the Royal Society of London. Series B: Biological sciences

JF - Philosophical transactions of the Royal Society of London. Series B: Biological sciences

SN - 0962-8436

IS - 1848

M1 - 20162126

ER -