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Acclimation of CTM, LD50, and Rapid Loss of Acclimation of Thermal Preferendum in Tadpoles of Limnodynastes peronii (Anura, Myobatrachidae)
Marshall, Elizabeth and Grigg, Gordon C. (1980-01-01) Acclimation of CTM, LD50, and Rapid Loss of Acclimation of Thermal Preferendum in Tadpoles of Limnodynastes peronii (Anura, Myobatrachidae). The Australian Zoologist, 20 3: 447-456.
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| Name |
Description |
MIMEType |
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Downloads |
acclim_of_CTM_et.pdf
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acclim_of_CTM_et.pdf |
application/pdf |
331.16KB |
81 |
| Author(s) |
Marshall, Elizabeth
Grigg, Gordon C.
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| Title |
Acclimation of CTM, LD50, and Rapid Loss of Acclimation of Thermal Preferendum in Tadpoles of Limnodynastes peronii (Anura, Myobatrachidae)
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| Journal name |
The Australian Zoologist
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| Publication date |
1980-01-01
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| Volume number |
20
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| Issue number |
3
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| Start page |
447
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| End page |
456
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| Subject |
270604 Comparative Physiology
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| Abstract |
Groups of tadpoles of Limnodynastes peronii (Anura, Myobatrachidae) were kept at two temperatures (15 degrees C and 25 degrees C) for 45-105 days. In a thermal gradient (6-36 degrees
C), initial thermal preferenda were significantly different in 15 degrees C and 25 degrees C history groups, approximately 13 degrees C and 21 degrees C respectively. However, after 2.5 hours these
initial differences were no longer seen and the final thermal preferendum was approximately 18 degrees C regardless of previous thermal history. Critical thermal maxima and LD50, increased
following warm thermal history. Considering these results and the lack of metabolic acclimation reported elsewhere, these tadpoles can be seen as ectotherms whose thermal strategies are behavioural
rather than physiological or biochemical. The rapid loss of acclimation of preferred temperature is discussed in relation to Fry's "final preferendum" paradigm.
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| Keyword(s) |
Limnodynastes peronii
thermal preference
acclimation
critical thermal maximum
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| Additional Notes |
Reproduced with permission.
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