The effect of photoperiod on temperature selection in the European green lizard, Lacerta viridis.
Oecologia
; 53(2): 222-226, 1982 Jan.
Article
em En
| MEDLINE
| ID: mdl-28311113
ABSTRACT
Voluntary body temperature selection of unrestrained Lacerta viridis revealed consistant photoperiod entrained diel patterns. Each daily cycle was characterized by an elevation in body temperature (T b) to a high level plateau which declined at the onset of scotophase to a low level; both of which were maintained within narrow ranges.Under natural photoperiod in fall, lizards responded to shorter days by sinking low level T b's and expanding the duration of these low levels until no rhythmicity was shown. Subsequent exposure to long day, LD 168, induced self-arousal and a slightly altered diel T b selection with significantly higher T b's being chosen at both the elevated and lower daily levels. Changes in the relations of diel T b selection due to shift in photoperiod, suggest that photoperiod acts as a seasonal indicator for thermal adaptation.
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MEDLINE
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En
Ano de publicação:
1982
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Article