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Article
High Temperature Slows Down Growth in Tobacco Hornworms (Manduca Sexta Larvae) under Food Restriction
Insect Science
  • Matthew B. Hayes
  • Lihong Jiao
  • Tsu-hsuan Tsao
  • Ian King
  • Michael Jennings
  • Chen Hou, Missouri University of Science and Technology
Abstract

When fed ad libitum (AL), ectothermic animals usually grow faster and have higher metabolic rate at higher ambient temperature. However, if food supply is limited, there is an energy tradeoff between growth and metabolism. Here we hypothesize that for ectothermic animals under food restriction (FR), high temperature will lead to a high metabolic rate, but growth will slow down to compensate for the high metabolism. We measure the rates of growth and metabolism of 4 cohorts of 5th instar hornworms (Manduca sexta larvae) reared at 2 levels of food supply (AL and FR) and 2 temperatures (20 and 30°C). Our results show that, compared to the cohorts reared at 20°C, the ones reared at 30°C have high metabolic rates under both AL and FR conditions, but a high growth rate under AL and a low growth rate under FR, supporting this hypothesis.

Department(s)
Biological Sciences
Keywords and Phrases
  • Energy Budget,
  • Food Restriction,
  • Growth,
  • Hornworm,
  • Metabolism,
  • Tradeoff
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2015 Institute of Zoology, Chinese Academy of Sciences, All rights reserved.
Publication Date
6-1-2015
Publication Date
01 Jun 2015
PubMed ID
24459098
Disciplines
Citation Information
Matthew B. Hayes, Lihong Jiao, Tsu-hsuan Tsao, Ian King, et al.. "High Temperature Slows Down Growth in Tobacco Hornworms (Manduca Sexta Larvae) under Food Restriction" Insect Science Vol. 22 Iss. 3 (2015) p. 424 - 430 ISSN: 1672-9609;1744-7917
Available at: http://works.bepress.com/chen-hou/14/