Abstract
1. 1. Growth, appetite, gross conversion efficiency and protein turnover rates of liver, gills and white muscle were measured in juvenile rainbow trout chronically exposed (90 days) to soft and hardwater at two temperatures (ambient, ambient temp. +2°C). The temperature regime followed that of inshore Lake Ontario over the months of June-September 1993 as temperature rose from ∼13 to 24°C. 2. 2. Over the initial 60 days of exposure, the addition of 2°C to the ambient temperature increased growth, appetite, gross conversion efficiency and protein turnover by an average of 16%. However, further exposure during the period of peak ambient temperatures, led to an average 20% reduction in growth, appetite, gross conversion efficiency and protein turnover. 3. 3. Increased rates of gill protein turnover and arguably lower rates of growth indicate that the cost of living for a trout acclimated and maintained in synthetic softwater is higher than that of hardwater fish. In addition, lower appetite in softwater fish suggest that life in softwater is itself a mild form of environmental stress.
| Original language | English |
|---|---|
| Pages (from-to) | 231-244 |
| Number of pages | 14 |
| Journal | Journal of Thermal Biology |
| Volume | 20 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jan 1 1995 |
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Keywords
- appetite
- elevated temperature
- Fish
- gills
- global warming
- growth
- liver
- protein synthesis
- protein turnover
- softwater
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Biochemistry
- Developmental Biology
- Physiology
Cite this
Effects of a summer temperature regime representative of a global warming scenario on growth and protein synthesis in hardwater- and softwater-acclimated juvenile rainbow trout (Oncorhynchus mykiss). / Reid, Scott D.; Dockray, J. J.; Linton, T. K.; McDonald, D. G.; Wood, C. M.
In: Journal of Thermal Biology, Vol. 20, No. 1-2, 01.01.1995, p. 231-244.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effects of a summer temperature regime representative of a global warming scenario on growth and protein synthesis in hardwater- and softwater-acclimated juvenile rainbow trout (Oncorhynchus mykiss)
AU - Reid, Scott D.
AU - Dockray, J. J.
AU - Linton, T. K.
AU - McDonald, D. G.
AU - Wood, C. M.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - 1. 1. Growth, appetite, gross conversion efficiency and protein turnover rates of liver, gills and white muscle were measured in juvenile rainbow trout chronically exposed (90 days) to soft and hardwater at two temperatures (ambient, ambient temp. +2°C). The temperature regime followed that of inshore Lake Ontario over the months of June-September 1993 as temperature rose from ∼13 to 24°C. 2. 2. Over the initial 60 days of exposure, the addition of 2°C to the ambient temperature increased growth, appetite, gross conversion efficiency and protein turnover by an average of 16%. However, further exposure during the period of peak ambient temperatures, led to an average 20% reduction in growth, appetite, gross conversion efficiency and protein turnover. 3. 3. Increased rates of gill protein turnover and arguably lower rates of growth indicate that the cost of living for a trout acclimated and maintained in synthetic softwater is higher than that of hardwater fish. In addition, lower appetite in softwater fish suggest that life in softwater is itself a mild form of environmental stress.
AB - 1. 1. Growth, appetite, gross conversion efficiency and protein turnover rates of liver, gills and white muscle were measured in juvenile rainbow trout chronically exposed (90 days) to soft and hardwater at two temperatures (ambient, ambient temp. +2°C). The temperature regime followed that of inshore Lake Ontario over the months of June-September 1993 as temperature rose from ∼13 to 24°C. 2. 2. Over the initial 60 days of exposure, the addition of 2°C to the ambient temperature increased growth, appetite, gross conversion efficiency and protein turnover by an average of 16%. However, further exposure during the period of peak ambient temperatures, led to an average 20% reduction in growth, appetite, gross conversion efficiency and protein turnover. 3. 3. Increased rates of gill protein turnover and arguably lower rates of growth indicate that the cost of living for a trout acclimated and maintained in synthetic softwater is higher than that of hardwater fish. In addition, lower appetite in softwater fish suggest that life in softwater is itself a mild form of environmental stress.
KW - appetite
KW - elevated temperature
KW - Fish
KW - gills
KW - global warming
KW - growth
KW - liver
KW - protein synthesis
KW - protein turnover
KW - softwater
UR - http://www.scopus.com/inward/record.url?scp=0000467929&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000467929&partnerID=8YFLogxK
U2 - 10.1016/0306-4565(94)00074-S
DO - 10.1016/0306-4565(94)00074-S
M3 - Article
VL - 20
SP - 231
EP - 244
JO - Journal of Thermal Biology
JF - Journal of Thermal Biology
SN - 0306-4565
IS - 1-2
ER -