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Effects of hypoxia, anoxia, and endogenous ethanol on thermoregulation in goldfish, Carassius auratus.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Rausch, Reinold Crawshaw, Larry I. Wallace, Helen L. |
| Copyright Year | 2000 |
| Abstract | Effects of hypoxia, anoxia, and endogenous ethanol (EtOH) on selected temperature (T(sel)) and activity in goldfish were evaluated. Blood and brain EtOH concentrations ([EtOH]) and brain oxygen partial pressure (PO(2)) were quantified at crucial ambient oxygen pressures. Below a threshold value near 31 Torr, T(sel) decreased as a function of environmental PO(2). T(sel) of 15 degrees C-acclimated fish was approximately 10 degrees C at the onset of anoxia and changed little over 2 h. Activity showed a similar response pattern. Brain [EtOH] was significantly elevated above control levels after 1 h anoxia. In normoxic water, T(sel) remained different in previously anoxic and normoxic control fish for approximately 20 min. Blood [EtOH] of previously anoxic fish remained significantly elevated ([EtOH] >4.0 micromol/g blood), and activity was significantly depressed at 20 min. Brain PO(2) reached normal levels in <3 min. We conclude that [EtOH] (brain or blood) and brain PO(2) are not proximal causes of either behavioral anapyrexia (hypothermia) or inactivity in goldfish exposed to oxygen-depleted environments. |
| File Format | PDF HTM / HTML |
| DOI | 10.1152/ajpregu.2000.278.3.R545 |
| Alternate Webpage(s) | http://ajpregu.physiology.org/content/ajpregu/278/3/R545.full.pdf |
| PubMed reference number | 10712271 |
| Alternate Webpage(s) | https://doi.org/10.1152/ajpregu.2000.278.3.R545 |
| Journal | Medline |
| Volume Number | 278 |
| Issue Number | 3 |
| Journal | American journal of physiology. Regulatory, integrative and comparative physiology |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
