NDLI: Effects of temperature acclimation on cardiorespiratory performance of the Antarctic notothenioid Trematomus bernacchii

Content Provider	Springer Nature Link
Author	Jayasundara, Nishad Healy, Timothy M. Somero, George N.
Copyright Year	2013
Abstract	Notothenioid fishes of the Southern Ocean have evolved under cold and stable temperatures for millions of years. Due to rising temperatures in the Southern Ocean, investigating thermal limits and the capacities for inducing a temperature acclimation response in notothenioids has become of increasing interest. Here, we investigated effects of temperature acclimation on cardiorespiratory responses and cardiac and skeletal muscle energy metabolism in a benthic Antarctic notothenioid, Trematomus bernacchii. We acclimated specimens to −1, 2 and 4.5 °C for 14 days and quantified heart rates and ventilation rates during an acute increase in temperature. Ventilation rates showed an effect of acclimation both at initial steady-state acclimation conditions and during an acute temperature increase, suggesting a partial thermal compensatory response. However, acclimation did not affect heart rates at steady-state acclimation conditions and the temperatures at which onset of cardiac arrhythmia occurred, suggesting lack of inducible thermal tolerance in cardiac performance. Citrate synthase (CS), lactate dehydrogenase (LDH) and 3-hydroxyacyl dehydrogenase activities in skeletal muscle tissues suggested acclimation-induced shifts in metabolic fuel preferences, and a marked increase in LDH activity with acclimation to 4.5 °C showed an increase in anaerobic metabolism. In heart tissue, CS and LDH activities decreased with acclimation to 4.5 °C, suggesting reduced cardiac ATP production. Overall, the data suggest a partial acclimatory response to temperature by T. bernacchii and support the hypothesis that reduced cardiac acclimatory capacity may play a role in limiting the thermal plasticity of T. bernacchii.
Starting Page	1047
Ending Page	1057
Page Count	11
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	36
Issue Number	7
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-04-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cardiac function Notothenioids Respirometry Thermal tolerance Temperature acclimation Trematomus bernacchii Ecology Oceanography Microbiology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Effects of temperature acclimation on cardiorespiratory performance of the Antarctic notothenioid Trematomus bernacchii

Effects of warm acclimation on serum osmolality, cortisol and hematocrit levels in the Antarctic fish, Trematomus bernacchii

Comparison of angiotensin converting enzyme-like activity in the Antarctic teleosts Trematomus bernacchii and Chionodraco hamatus

Moderate elevations in temperature do not increase oxidative stress in oxidative muscles of Antarctic notothenioid fishes

The Antarctic notothenioid fish Pagothenia borchgrevinki is thermally flexible: acclimation changes oxygen consumption

Inducible heat tolerance in Antarctic notothenioid fishes

Heat hardening in Antarctic notothenioid fishes

Temperature-dependent metabolism in Antarctic fish: Do habitat temperature conditions affect thermal tolerance ranges?

Antioxidant potential is positively correlated with mitochondrial enzyme activity in Antarctic and non-Antarctic notothenioid fishes

Effects of temperature acclimation on cardiorespiratory performance of the Antarctic notothenioid Trematomus bernacchii

Similar Documents

Effects of temperature acclimation on cardiorespiratory performance of the Antarctic notothenioid Trematomus bernacchii

Effects of warm acclimation on serum osmolality, cortisol and hematocrit levels in the Antarctic fish, Trematomus bernacchii

Comparison of angiotensin converting enzyme-like activity in the Antarctic teleosts Trematomus bernacchii and Chionodraco hamatus

Moderate elevations in temperature do not increase oxidative stress in oxidative muscles of Antarctic notothenioid fishes

The Antarctic notothenioid fish Pagothenia borchgrevinki is thermally flexible: acclimation changes oxygen consumption

Inducible heat tolerance in Antarctic notothenioid fishes

Heat hardening in Antarctic notothenioid fishes

Temperature-dependent metabolism in Antarctic fish: Do habitat temperature conditions affect thermal tolerance ranges?

Antioxidant potential is positively correlated with mitochondrial enzyme activity in Antarctic and non-Antarctic notothenioid fishes

Effects of temperature acclimation on cardiorespiratory performance of the Antarctic notothenioid Trematomus bernacchii