| Seasonal variations in the physiological stress response to discrete bouts of aerial exposure in the little skate, Leucoraja erinacea. | |
| | |
MedLine Citation:
|
PMID: 21689777 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Aerial exposure and acute thermal stress have been shown to elicit profound physiological disruptions in obligate water-breathing teleosts. However, no study has investigated these responses in an elasmobranch. To address this, venous blood samples were collected and evaluated from little skates (Leucoraja erinacea) subjected to discrete aerial exposure durations (0, 15, and 50min) coupled with differing abrupt thermal changes (gradient between seawater and air; winter: ΔT=-3°C; summer: ΔT=+9°C) in two distinct laboratory studies. In general, blood acid-base properties (e.g. decline in pH; elevation in PCO(2)) and select metabolites (elevated whole-blood lactate) and electrolytes (elevated plasma K(+)) were significantly disrupted by aerial exposure, and were most disturbed after skates were exposed to air for 50min. However, the magnitude of the blood acid-base perturbations, metabolic contribution to the resulting blood acidosis, elevations to ionic and metabolic parameters, and delayed mortality were more extreme during the summer study, suggesting that acute thermal stress exacerbates the physiological impairments associated with aerial exposure in little skates. Conversely, a reduced thermal gradient (from seawater to air) may attenuate the magnitude of metabolic and ionic perturbations, resulting in a high physiological threshold for coping with extended aerial exposure. |
| | |
Authors:
|
Angela M Cicia; Lela S Schlenker; James A Sulikowski; John W Mandelman |
Related Documents
:
|
17435097 - Kinetic evaluation of normal walking and jumping in cats, using a pressure-sensitive wa... 15608087 - Is postexercise hypotension related to excess postexercise oxygen consumption through c... 9701897 - Leech therapy for complicated varicose veins. 7912947 - Thenar muscle blood flow and neuromuscular effects of vecuronium in patients receiving ... 3408687 - Haemostatic disturbances in patients bitten by russell's viper (vipera russelli siamens... 9683687 - Ultrasound in vascular pathologies. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-6-12 |
Journal Detail:
|
Title: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Volume: - ISSN: 1531-4332 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
|
Created Date: 2011-6-21 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9806096 Medline TA: Comp Biochem Physiol A Mol Integr Physiol Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011. Published by Elsevier Inc. |
Affiliation:
|
University of New England, 11 Hills Beach Rd, Biddeford, ME 04005, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effects of inhaled tiotropium plus transdermal tulobuterol versus tiotropium alone on impulse oscill...
Next Document: Phylogenetic constraints on digesta separation: Variation in fluid throughput in the digestive tract...