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Cited by 101Physiological and biochemical adaptationsAmphibian and Reptile BiologyAdipose Tissue and Metabolism

Effects of Meal Size, Meal Type, Body Temperature, and Body Size on the Specific Dynamic Action of the Marine Toad,Bufo marinus

Secor, Stephen M., Faulkner, Angela C.·2002·Physiological and Biochemical Zoology
DOI 10.1086/344493
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Abstract

Specific dynamic action (SDA), the accumulated energy expended on all physiological processes associated with meal digestion, is strongly influenced by features of both the meal and the organism. We assessed the effects of meal size, meal type, body temperature, and body size on the postprandial metabolic response and calculated SDA of the marine toad, Bufo marinus. Peak postprandial rates of O(2) consumption (.V(O2)) and CO(2) production (.V(CO2)) and SDA increased with meal size (5%-20% of body mass). Postprandial metabolism was impacted by meal type; the digestion of hard-bodied superworms (Zophobas larva) and crickets was more costly than the digestion of soft-bodied earthworms and juvenile rats. An increase in body temperature (from 20 degrees to 35 degrees C) altered the postprandial metabolic profile, decreasing its duration and increasing its magnitude, but did not effect SDA, with the cost of meal digestion remaining constant across body temperatures. Allometric mass exponents were 0.69 for standard metabolic rate, 0.85 for peak postprandial .V(O2), and 1.02 for SDA; therefore, the factorial scope of peak postprandial .V(O2) increased with body mass. The mass of nutritive organs (stomach, liver, intestines, and kidneys) accounted for 38% and 20% of the variation in peak postprandial .V(O2) and SDA, respectively. Toads forced to exercise experienced 25-fold increases in .V(O2) much greater than the 5.5-fold increase experience during digestion. Controlling for meal si…

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  • The peak factorial increase in metabolism following feeding (=RMR_pp/BMR) is positively correlated with body mass in mammals.

    “The peak factorial increase in metabolism following feeding (=RMR pp /BMR) is therefore positively correlated with body mass in mammals, as has been documented intraspecifically for Burmese pythons Python molurus (Secor and Diamond, 1997) and cane toads Bufo marinus (Secor and Faulkner, 2002).”

    From Allometric scaling of mammalian metabolism (2005) · cites this paper as Secor and Faulkner, 2002

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Authors
Secor, S. M., & Faulkner, A. C.
Affiliations
University of Mississippi (US)
Corresponding author
  • Secor, Stephen M.
  • Faulkner, Angela C.
ORCID
Secor, Stephen M.
Venue
Physiological and Biochemical Zoology
Publisher
University of Chicago Press
Published
2002-11
Volume
75
Issue
6
Pages
557-571
ISSN
  • 1522-2152 (ISSN-L)
  • 1537-5293
DOI
10.1086/344493
OpenAlex
W2158591681
Cited by
101
References
63
Citations by year
2025: 6 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 2 · 2020: 4 · 2019: 4 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 6 · 2014: 4 · 2013: 7 · 2012: 4
FWCI
4.93
Type
journal article
Language
en
Open access
closed
Locations
  • Physiological and Biochemical Zoology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Shandong Academy of Sciences
Topics
  • Physical Sciences › Environmental Science › Ecology › Physiological and biochemical adaptations
  • Physical Sciences › Environmental Science › Global and Planetary Change › Amphibian and Reptile Biology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
specific dynamic action, Rhinella marina, postprandial metabolism, meal size, meal type, body temperature, body size, allometry, oxygen consumption, CO2 emissions, amphibian metabolism, Bufo
MeSH terms
Animals, Body Temperature, Body Weight, Bufo marinus, Diet, Digestive System Physiological Phenomena, Energy Metabolism, Feeding Behavior, Heart, Kidney, Liver, Lung, Organ Size, Oxygen Consumption, Time Factors, Postprandial Period

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