Hot days are associated with short-term adrenocortical responses in a southern African arid-zone passerine bird

被引：21

作者：

Moagi, Lesedi L. ^{[1
,2
]}

Bourne, Amanda R. ^{[3
]}

Cunningham, Susan J. ^{[3
]}

Jansen, Raymond ^{[4
]}

Ngcamphalala, Celiwe A. ^{[1
,5
]}

Ganswindt, Andre ^{[6
]}

Ridley, Amanda R. ^{[7
]}

McKechnie, Andrew E. ^{[1
,5
]}

机构：

[1] South African Natl Biodivers Inst, Natl Zool Garden, South African Res Chair Conservat Physiol, ZA-0001 Pretoria, South Africa

[2] Tshwane Univ Technol, Dept Nat Conservat, ZA-0001 Pretoria, South Africa

[3] Univ Cape Town, DSI NRF Ctr Excellence, FitzPatrick Inst African Ornithol, ZA-7701 Rondebosch, South Africa

[4] Tshwane Univ Technol, Dept Environm Water & Earth Sci, ZA-0001 Pretoria, South Africa

[5] Univ Pretoria, DSI NRF Ctr Excellence, FitzPatrick Inst, Dept Zool & Entomol, Private Bag X20, ZA-0028 Hatfield, South Africa

[6] Univ Pretoria, Mammal Res Inst, Private Bag X20, ZA-0028 Hatfield, South Africa

[7] Univ Western Australia, Ctr Evolutionary Biol, Sch Biol Sci, Perth, WA 6009, Australia

来源：

JOURNAL OF EXPERIMENTAL BIOLOGY | 2021年 / 224卷 / 10期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

Air temperature; Desert; Faecal glucocorticoid metabolites; Fitness costs; Heat stress; FECAL GLUCOCORTICOID METABOLITES; BODY CONDITION; FORAGING BEHAVIOR; HIGH-TEMPERATURES; STRESS-RESPONSE; CLIMATE-CHANGE; HEAT EXPOSURE; WILD; ELEPHANTS; STEROIDS;

D O I：

10.1242/jeb.242535

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Relatively little effort has been directed towards elucidating the role of physiological stress pathways in mediating avian responses to global heating. For free-ranging southern pied babblers, Turdoides bicolor, daily maximum air temperatures (T-max) between similar to 35 and similar to 40 degrees C result in reduced foraging efficiency, loss of body mass and compromised breeding success. We tested the hypothesis that very hot days are experienced as stressors by quantifying relationships between T-max and faecal glucocorticoid metabolite (fGCM) levels in naturally excreted droppings. On days when T-max<38 degrees C, fGCM levels were independent of T-max (mean +/- s.d. 140.25 +/- 56.92 ng g(-1) dry mass). At T-max>38 degrees C, however, fGCM levels increased linearly with T-max and averaged 190.79 +/- 70.13 ng g(-1) dry mass. The effects of T-max on fGCM levels did not carry over to the following morning, suggesting that very hot days are experienced as acute stressors.

引用

页数：6

共 7 条

[1] Seasonal behavioral responses of an arid-zone passerine in a hot environment
Pattinson, Nicholas B.
Smit, Ben
[J]. PHYSIOLOGY & BEHAVIOR, 2017, 179 : 268 - 275
[2] Non-invasive monitoring of physiological stress in an afrotropical arid-zone passerine bird, the southern pied babbler
Jepsen, Emma M.
Ganswindt, Andre
Ngcamphalala, Celiwe A.
Bourne, Amanda R.
Ridley, Amanda R.
McKechnie, Andrew E.
[J]. GENERAL AND COMPARATIVE ENDOCRINOLOGY, 2019, 276 : 60 - 68
[3] A TIGHT BALANCE BETWEEN NATURAL SELECTION AND GENE FLOW IN A SOUTHERN AFRICAN ARID-ZONE ENDEMIC BIRD
Ribeiro, Angela M.
Lloyd, Penn
Bowie, Rauri C. K.
[J]. EVOLUTION, 2011, 65 (12) : 3499 - 3514
[4] Using Facebook user photos to quantify surface water dependency in Southern African arid-zone bird species
Dixon, Elizabeth Anne
Smit, Ben
[J]. EMU-AUSTRAL ORNITHOLOGY, 2023, 123 (02): : 170 - 175
[5] Short-Term Responses of Southern African Semi-Arid Rangelands to Fire: A Review of Impact on Plants
Snyman, Hennie A.
[J]. ARID LAND RESEARCH AND MANAGEMENT, 2015, 29 (02) : 237 - 254
[6] Short-Term Responses of Southern African Semi-Arid Rangelands to Fire: A Review of Impact on Soils
Snyman, Hennie A.
[J]. ARID LAND RESEARCH AND MANAGEMENT, 2015, 29 (02) : 222 - 236
[7] Current insecticide treatments used in locust control have less of a short-term impact on Australian arid-zone reptile communities than does temporal variation
Maute, Kimberly
French, Kristine
Bull, C. Michael
Story, Paul
Hose, Grant
[J]. WILDLIFE RESEARCH, 2015, 42 (01) : 50 - 59

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