Rapid growth cost in “all-fish” growth hormone gene transgenic carp: Reduced critical swimming speed
Data(s) |
2007
|
---|---|
Resumo |
Evidence has accumulated that there is a trade-off between benefits and costs associated with rapid growth. A trade-off between growth rates and critical. swimming speed (U-crit) had been also reported to be common in teleost fish. We hypothesize that growth acceleration in the F-3 generation of "all-fish" growth hormone gene (GH) transgenic common carp (Cyprinus carpio L.) would reduce the swimming abilities. Growth and swimming performance between transgenic fish and non-transgenic controls were) compared. The results showed that transgenic fish had a mean body weight 1.4-1.9-fold heavier, and a mean specific growth rate (SGR) value 6%-10% higher than the controls. Transgenic fish, however, had a mean absolute U-crit (cm/s) value 22% or mean relative Ucrit (BL/s) value 24% lower than the controls. It suggested that fast-growing "all-fish" GH-transgenic carp were inferior swimmers. It is also supported that there was a trade-off between growth rates and swimming performance, i.e. faster-growing individuals had lower critical swimming speed. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Li DeLiang; Fu CuiZhang; Hu Wei; Zhong Shan; Wang YaPing; Zhu ZuoYan.Rapid growth cost in |
Palavras-Chave | #Multidisciplinary Sciences #transgenic fish #growth #swimming performance #trade-off #growth hormone #critical swimming speed |
Tipo |
期刊论文 |