Differences between domesticated Eurasian and Japanese indigenous strains of the common carp (Cyprinus carpio) in cortisol release following acute stress

作者：Takahara Teruhiko^*; Minamoto Toshifumi; Doi Hideyuki; Ito Takafumi; Kawabata Zen' ichiro

来源：Ichthyological Research, 2014, 61(2): 165-168.

DOI：10.1007/s10228-013-0385-4

• Domesticated Eurasian strain
• Handling
• Japanese indigenous strain
• Non-invasive method
• Stress sensitivity

To understand the differences in the stress sensitivities between domesticated Eurasian and Japanese indigenous strains of common carp (Cyprinus carpio Linnaeus 1758), we compared concentrations of cortisol released into the water in response to handling of the two types of strains. At 0.5 and 2 h after the handling treatment, the cortisol emission was greater from the Eurasian strain than from the Japanese strain. There were no differences between the strains in the cortisol levels after 4 to 24 h. We found that Eurasian strains exposed to the unnatural stressor (i.e., handling) exhibited a higher cortisol response than the Japanese strain.

• 出版日期2014-4