Observations on the thermoregulatory behaviour of juvenile spotted grunter,Pomadasys commersonnii(Haemulidae: Pisces)
作者:
N. Deacon,
T. Hecht,
期刊:
Journal of Applied Ichthyology
(WILEY Available online 1995)
卷期:
Volume 11,
issue 1‐2
页码: 100-110
ISSN:0175-8659
年代: 1995
DOI:10.1111/j.1439-0426.1995.tb00010.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The thermal preference of juvenile spotted grunter,Pomadasys commersonnii(Haemulidae), was determined in a horizontal thermal gradient. Temperature preference was tested over a range of 17–31°C at three salinities. The modal temperature preferenda at 5, 12 and 35 ppt were 25°C, 24.5°C and 25°C, respectively. They were not significantly different. The thermal preferendum of this species was found to be between 24°C and 25°C. Supplementary experiments were conducted to test the stability of the final thermal preferendum. Initial observation of the behaviour of juvenile spotted grunter indicated the presence of a strong circadian rhythm. However, diel variation in activity did not influence temperature preference. These data are important for the development of a culture protocol for this euryhaline
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