Cross-stage consequences of egg temperature in the insect Manduca sexta

Kristen A. Potter, Goggy Davidowitz, H. Arthur Woods

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

An organism's environment, particularly early in development, can profoundly shape its future phenotypes. While the long-term consequences of embryonic temperature are well studied in vertebrates, insects have complex life cycles that may uncouple temperature's effects in one stage from physiology in the next. This study examines how egg temperature affects insect performance across all subsequent life stages. We focused on the hawkmoth, Manduca sexta, and examined how egg temperatures affected hatching time, hatchling mass, larval growth, development time, head capsule size, pupal mass and adult fecundity. Eggs were exposed to either diurnal temperature cycles or a single heat shock; in both experiments, temperatures were within the range to which eggs are typically exposed in the field. Although the consequences of egg temperature varied depending on the type of treatment, both cycling temperatures and heat shock affected egg development time and initial larval growth rate, which likely have fitness consequences for M. sexta in nature. In contrast, egg temperature had no persistent effect on any trait measured in later larval stages, pupae or adults. Organisms with complex life cycles -Manduca has four distinct life stages and multiple larval sub-stages - may benefit from rapid compensation for poor early conditions. Additionally, the modularity of insect life cycles may help insects cope with environmental variability by insulating later stages from disturbances during embryogenesis.

Original languageEnglish (US)
Pages (from-to)548-556
Number of pages9
JournalFunctional Ecology
Volume25
Issue number3
DOIs
StatePublished - Jun 2011

Fingerprint

Manduca sexta
insect
egg
insects
temperature
life cycle
life cycle (organisms)
heat shock
heat stress
Manduca
egg development
pupa
organisms
temperature effect
physiology
hatching
fecundity
phenotype
vertebrate
fitness

Keywords

  • Complex life cycles
  • Datura wrightii
  • Embryonic temperature
  • Growth rate
  • Head capsules
  • Heat shock
  • Life-history stages
  • Metamorphosis
  • Phenotypic plasticity

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Cross-stage consequences of egg temperature in the insect Manduca sexta. / Potter, Kristen A.; Davidowitz, Goggy; Arthur Woods, H.

In: Functional Ecology, Vol. 25, No. 3, 06.2011, p. 548-556.

Research output: Contribution to journalArticle

Potter, Kristen A. ; Davidowitz, Goggy ; Arthur Woods, H. / Cross-stage consequences of egg temperature in the insect Manduca sexta. In: Functional Ecology. 2011 ; Vol. 25, No. 3. pp. 548-556.
@article{43a1ad77f94b4a2a8dc6b8b004184d54,
title = "Cross-stage consequences of egg temperature in the insect Manduca sexta",
abstract = "An organism's environment, particularly early in development, can profoundly shape its future phenotypes. While the long-term consequences of embryonic temperature are well studied in vertebrates, insects have complex life cycles that may uncouple temperature's effects in one stage from physiology in the next. This study examines how egg temperature affects insect performance across all subsequent life stages. We focused on the hawkmoth, Manduca sexta, and examined how egg temperatures affected hatching time, hatchling mass, larval growth, development time, head capsule size, pupal mass and adult fecundity. Eggs were exposed to either diurnal temperature cycles or a single heat shock; in both experiments, temperatures were within the range to which eggs are typically exposed in the field. Although the consequences of egg temperature varied depending on the type of treatment, both cycling temperatures and heat shock affected egg development time and initial larval growth rate, which likely have fitness consequences for M. sexta in nature. In contrast, egg temperature had no persistent effect on any trait measured in later larval stages, pupae or adults. Organisms with complex life cycles -Manduca has four distinct life stages and multiple larval sub-stages - may benefit from rapid compensation for poor early conditions. Additionally, the modularity of insect life cycles may help insects cope with environmental variability by insulating later stages from disturbances during embryogenesis.",
keywords = "Complex life cycles, Datura wrightii, Embryonic temperature, Growth rate, Head capsules, Heat shock, Life-history stages, Metamorphosis, Phenotypic plasticity",
author = "Potter, {Kristen A.} and Goggy Davidowitz and {Arthur Woods}, H.",
year = "2011",
month = "6",
doi = "10.1111/j.1365-2435.2010.01807.x",
language = "English (US)",
volume = "25",
pages = "548--556",
journal = "Functional Ecology",
issn = "0269-8463",
publisher = "Wiley-Blackwell",
number = "3",

}

TY - JOUR

T1 - Cross-stage consequences of egg temperature in the insect Manduca sexta

AU - Potter, Kristen A.

AU - Davidowitz, Goggy

AU - Arthur Woods, H.

PY - 2011/6

Y1 - 2011/6

N2 - An organism's environment, particularly early in development, can profoundly shape its future phenotypes. While the long-term consequences of embryonic temperature are well studied in vertebrates, insects have complex life cycles that may uncouple temperature's effects in one stage from physiology in the next. This study examines how egg temperature affects insect performance across all subsequent life stages. We focused on the hawkmoth, Manduca sexta, and examined how egg temperatures affected hatching time, hatchling mass, larval growth, development time, head capsule size, pupal mass and adult fecundity. Eggs were exposed to either diurnal temperature cycles or a single heat shock; in both experiments, temperatures were within the range to which eggs are typically exposed in the field. Although the consequences of egg temperature varied depending on the type of treatment, both cycling temperatures and heat shock affected egg development time and initial larval growth rate, which likely have fitness consequences for M. sexta in nature. In contrast, egg temperature had no persistent effect on any trait measured in later larval stages, pupae or adults. Organisms with complex life cycles -Manduca has four distinct life stages and multiple larval sub-stages - may benefit from rapid compensation for poor early conditions. Additionally, the modularity of insect life cycles may help insects cope with environmental variability by insulating later stages from disturbances during embryogenesis.

AB - An organism's environment, particularly early in development, can profoundly shape its future phenotypes. While the long-term consequences of embryonic temperature are well studied in vertebrates, insects have complex life cycles that may uncouple temperature's effects in one stage from physiology in the next. This study examines how egg temperature affects insect performance across all subsequent life stages. We focused on the hawkmoth, Manduca sexta, and examined how egg temperatures affected hatching time, hatchling mass, larval growth, development time, head capsule size, pupal mass and adult fecundity. Eggs were exposed to either diurnal temperature cycles or a single heat shock; in both experiments, temperatures were within the range to which eggs are typically exposed in the field. Although the consequences of egg temperature varied depending on the type of treatment, both cycling temperatures and heat shock affected egg development time and initial larval growth rate, which likely have fitness consequences for M. sexta in nature. In contrast, egg temperature had no persistent effect on any trait measured in later larval stages, pupae or adults. Organisms with complex life cycles -Manduca has four distinct life stages and multiple larval sub-stages - may benefit from rapid compensation for poor early conditions. Additionally, the modularity of insect life cycles may help insects cope with environmental variability by insulating later stages from disturbances during embryogenesis.

KW - Complex life cycles

KW - Datura wrightii

KW - Embryonic temperature

KW - Growth rate

KW - Head capsules

KW - Heat shock

KW - Life-history stages

KW - Metamorphosis

KW - Phenotypic plasticity

UR - http://www.scopus.com/inward/record.url?scp=79955523835&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955523835&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2435.2010.01807.x

DO - 10.1111/j.1365-2435.2010.01807.x

M3 - Article

AN - SCOPUS:79955523835

VL - 25

SP - 548

EP - 556

JO - Functional Ecology

JF - Functional Ecology

SN - 0269-8463

IS - 3

ER -