Biology of Behaviour Unit, Laboratory of Fish Ethology, University of Liège, 22 Quai Van Beneden, 4020 Liège, Belgium.
Fish Physiol Biochem. 2011 Sep;37(3):533-42. doi: 10.1007/s10695-010-9455-y. Epub 2010 Dec 5.
In this study, relationships between circulating androgens, aggressive behaviour and breeding tubercles in males of common bream Abramis brama were examined in an aquarium environment. The breeding tubercles of fish were counted, the number of attacks was quantified by male status and circulating rates of testosterone and 11-ketotestosterone from blood plasma were analysed using radioimmunoassay procedures. The results revealed that no significant differences were found between circulating testosterone and 11-ketotestosterone in territorial and nonterritorial males. Furthermore, no significant correlations were found between circulating androgens, androgens and aggression, androgens and tubercles and breeding tubercles and aggression in common bream by male status. However, territorial fish displayed a significantly higher level of aggressive behaviour and breeding tubercles than nonterritorial fish. In natural environments, the occurrence of breeding tubercles during the spawning season could contribute to identifying the behavioural status of common bream males.
在这项研究中，研究了养殖环境下雄性鲤鱼（Abramis brama）的循环雄激素、攻击行为和繁殖结节之间的关系。通过雄性地位计数繁殖结节，通过雄性地位量化攻击次数，并使用放射免疫分析程序分析来自血浆的睾酮和 11-酮睾酮的循环率。结果表明，在有领地和无领地的雄性中，循环睾酮和 11-酮睾酮之间没有显著差异。此外，在雄性地位方面，循环雄激素、雄激素和攻击行为、雄激素和结节以及繁殖结节和攻击行为之间没有发现显著相关性。然而，有领地的鱼表现出比无领地的鱼更高水平的攻击行为和繁殖结节。在自然环境中，繁殖季节出现繁殖结节可能有助于识别鲤鱼雄性的行为状态。
