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Preliminary Study on the Age and Growth Characteristics of Schizothorax macropogon
Zhu Xiu-Fang (zhuxiufang@ihb.ac.cn); Chen Yi-Feng (chenyf@ihb.ac.cn); Zhu Xiu-Fang; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2009
Source PublicationChinese Journal of Zoology
ISSN0250-3263
Volume44Issue:3Pages:76-82
AbstractSchizothorax macropogon is one of the most important commercial species in the Yarlung Zangho River. We aged all the specimens and indentified growth characteristics by examining 293 specimens collected in the Yarlung Zangbo River during 2004 and 2006 based on dorsal fin ray sections. The specimen was formed by 14 age groups from age 2 to age 14 and age 16. The most proportion of the specimen were formed by individuals age 4 to age 6, accounting 74.85% to the total specimen examined. Sex ratio (female : male) was 1 : 0.881. The relationship between standard body length and weight was described by formula W = 0.018L(2.961) for males and W = 0.023L(2.904) for females respectively. Therefore, the growth of S. macropogon was in a constant speed which can be described with von Bertalanffy equation, L-t = 49.622[1 - e(-0.074(t + 4.017)), W-t = 2 034.48][1 - e(-0.074(t + 4.017))](2.962) for males and L-t = 65.676[1 - e(-0.053(t +3.305))], W-t = 4 520.633[1 - e(-0.053(t + 3.305))](2.904) for females. The growth inflexion points were 10.7 years and 16.6 years for males and females respectively with the corresponding standard body lengths 32.86 cm (male), 43.06 cm (female) and body weights of 600.31 g (female), 1 326.75 g (female).
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18665
Collection期刊论文
Corresponding AuthorZhu Xiu-Fang; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Zhu Xiu-Fang ,Chen Yi-Feng ,Zhu Xiu-Fang,et al. Preliminary Study on the Age and Growth Characteristics of Schizothorax macropogon[J]. Chinese Journal of Zoology,2009,44(3):76-82.
APA Zhu Xiu-Fang ,Chen Yi-Feng ,Zhu Xiu-Fang,&Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2009).Preliminary Study on the Age and Growth Characteristics of Schizothorax macropogon.Chinese Journal of Zoology,44(3),76-82.
MLA Zhu Xiu-Fang ,et al."Preliminary Study on the Age and Growth Characteristics of Schizothorax macropogon".Chinese Journal of Zoology 44.3(2009):76-82.
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