Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.cbpb.2012.08.001 |
Metabolic responses of the South American ornate horned frog (Ceratophrys ornata) to estivation | |
Groom, Derrick J. E.1; Kuchel, Louise2; Richards, Jeffrey G.1 | |
通讯作者 | Richards, Jeffrey G. |
来源期刊 | COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
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ISSN | 1096-4959 |
EISSN | 1879-1107 |
出版年 | 2013 |
卷号 | 164期号:1页码:2-9 |
英文摘要 | We examined the metabolic responses of the South American frog, Ceratophrys ornata, to laboratory-induced estivation. Whole-animal and mass-specific oxygen consumption rates (VO2) did not change during fasting or 56 days of estivation, despite observing significant decreases in body mass. The maintenance of mass-specific metabolic rate at routine levels during estivation suggests that metabolic rate suppression is not a major response to estivation in this species. There was a significant decline in liver glycogen and a loss of adipose tissue mass during estivation, suggesting that both carbohydrate and lipid pathways are used to fuel metabolism during estivation. The activity of pyruvate dehydrogenase, an important regulator of carbohydrate oxidation, and carnitine palmitoyltransferase and 3-hydroxyacyl-CoA dehydrogenase, regulators of lipid oxidation, showed no significant change in activity in liver, heart, and muscle between estivating and active frogs. There was an increase in plasma osmolality, which is characteristic of estivating animals. Overall, our metabolic analysis of estivation in C. ornata indicates that this species does not employ a dramatic suppression metabolic rate to survive dehydration stress and that both endogenous carbohydrates and lipids are used as metabolic fuels. (C) 2012 Elsevier Inc. All rights reserved. |
英文关键词 | Estivation Carbohydrate metabolism Lipid metabolism Metabolic suppression Oxygen consumption |
类型 | Article |
语种 | 英语 |
国家 | Canada ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000312471900002 |
WOS关键词 | AUSTRALIAN DESERT FROGS ; SPADEFOOT TOADS ; AFRICAN LUNGFISH ; WATER-BALANCE ; KETONE-BODY ; NEOBATRACHUS ; DEPRESSION ; COCOON ; MUSCLE ; UREA |
WOS类目 | Biochemistry & Molecular Biology ; Zoology |
WOS研究方向 | Biochemistry & Molecular Biology ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176494 |
作者单位 | 1.Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada; 2.Univ Queensland, Sch Biol Sci, Brisbane, Qld 4072, Australia |
推荐引用方式 GB/T 7714 | Groom, Derrick J. E.,Kuchel, Louise,Richards, Jeffrey G.. Metabolic responses of the South American ornate horned frog (Ceratophrys ornata) to estivation[J],2013,164(1):2-9. |
APA | Groom, Derrick J. E.,Kuchel, Louise,&Richards, Jeffrey G..(2013).Metabolic responses of the South American ornate horned frog (Ceratophrys ornata) to estivation.COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY,164(1),2-9. |
MLA | Groom, Derrick J. E.,et al."Metabolic responses of the South American ornate horned frog (Ceratophrys ornata) to estivation".COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY 164.1(2013):2-9. |
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