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Age and growth characters of an alien catfish Pelteobagrus fulvidraco in Lake Fuxian, China
Li Xiu-Qi; Chen Yi-Feng (chenyf@ihb.ac.cn); Li Kun; Chen Yi-Feng; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2006
Source PublicationActa Zoologica Sinica
ISSN0001-7302
Volume52Issue:2Pages:263-271
AbstractPelteobagrus fulvidraco (Richardson) was introduced accidentally to the Lake Fuxian as an alien species a few years ago, and has presented a relative stable output in catches since 2002. Age and growth characters were studied using 708 specimens collected from November 2002 to May 2005. Ages were determined by reading annuli on vertebrae. The estimated age ranges were between 0(+) - 5(+) years for females and 0(+) - 7(+) years for males. The growth parameters used to fit the Von Bertalanffy equation were L-infinity = 294.68 mm, k = 0.2476/y, t(0) = - 0.0298y, W-infinity = 209.93 g for mate and L-infinity = 257.13 mm, k = 0. 2219/y, t(0) = - 0. 3329 year, W-infinity = 184.45 g for female. The growth performance indices were phi(male) g = 4.3324 and phi(female) = 4.1665. The inflexion point of age and body weight was estimated at 3.1 years and 60.98 g for males, correspondingly, 3.6 years and 54.47 g for female. Compared with the data of literature in native regions. These results suggest there were typical characters of a complex age structure and a relatively slow growth in Lake Fuxian population, which would be adaptive responses to increase the total fitness of P. fulvidraco in process of population establishment.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18363
Collection期刊论文
Corresponding AuthorChen Yi-Feng; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Li Xiu-Qi,Chen Yi-Feng ,Li Kun,et al. Age and growth characters of an alien catfish Pelteobagrus fulvidraco in Lake Fuxian, China[J]. Acta Zoologica Sinica,2006,52(2):263-271.
APA Li Xiu-Qi,Chen Yi-Feng ,Li Kun,Chen Yi-Feng,&Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2006).Age and growth characters of an alien catfish Pelteobagrus fulvidraco in Lake Fuxian, China.Acta Zoologica Sinica,52(2),263-271.
MLA Li Xiu-Qi,et al."Age and growth characters of an alien catfish Pelteobagrus fulvidraco in Lake Fuxian, China".Acta Zoologica Sinica 52.2(2006):263-271.
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