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学科主题: Ecology; Marine & Freshwater Biology
题名: The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet
作者: Hao, FuHua1, 2; Chen, YiFeng1
通讯作者: Chen, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China
关键词: Salmo trutta fario L. ; Reproduction ; Tibet
刊名: ENVIRONMENTAL BIOLOGY OF FISHES
发表日期: 2009-09-01
DOI: 10.1007/s10641-008-9363-5
卷: 86, 期:1, 页:89-96
收录类别: SCI
文章类型: Article
部门归属: [Hao, FuHua; Chen, YiFeng] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Hao, FuHua] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125]
类目[WOS]: Ecology ; Marine & Freshwater Biology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
摘要: Some key aspects of the reproductive strategy of the brown trout (Salmo trutta fario L.) in the Yadong River, Tibet, including spawning season, age at sexual maturity, fecundity and egg size, have been studied. The majority of the samples were less than 215 mm and age ranged from 1 to 4 in both sexes, indicating that the majority of the fish were younger and the pressure by overfishing was high. The spawning periodicity was determined to be between the end of October and January, mainly in November and December. The ratio of male to female brown trout population (1.29:1 with P > 0.05) suggested no sex significant differences, although males were significantly more abundant than females in October (P < 0.0001) on monthly basis. Age and size of males and females at maturity was different and males matured earlier than females. Fecundity was markedly correlated with their body weight (P < 0.001, r = 0.9255), standard length (P < 0.01, r = 0.8879), and gonad weight (P < 0.001, r = 0.9366). The mean size of mature eggs in the spawning season was: 4.0 +/- 0.45 mm and tended to increase along with the female spawners size (P < 0.001, r = 0.9641). Further researches about the brown trout population in the Yadong River should be conducted on issues such as artificial reproduction, culture, conservation, management, and restocking.
英文摘要: Some key aspects of the reproductive strategy of the brown trout (Salmo trutta fario L.) in the Yadong River, Tibet, including spawning season, age at sexual maturity, fecundity and egg size, have been studied. The majority of the samples were less than 215 mm and age ranged from 1 to 4 in both sexes, indicating that the majority of the fish were younger and the pressure by overfishing was high. The spawning periodicity was determined to be between the end of October and January, mainly in November and December. The ratio of male to female brown trout population (1.29:1 with P > 0.05) suggested no sex significant differences, although males were significantly more abundant than females in October (P < 0.0001) on monthly basis. Age and size of males and females at maturity was different and males matured earlier than females. Fecundity was markedly correlated with their body weight (P < 0.001, r = 0.9255), standard length (P < 0.01, r = 0.8879), and gonad weight (P < 0.001, r = 0.9366). The mean size of mature eggs in the spawning season was: 4.0 +/- 0.45 mm and tended to increase along with the female spawners size (P < 0.001, r = 0.9641). Further researches about the brown trout population in the Yadong River should be conducted on issues such as artificial reproduction, culture, conservation, management, and restocking.
关键词[WOS]: MACROSTIGMA DUMERIL 1858 ; INTERPOPULATION VARIATION ; SPAWNING CHARACTERISTICS ; ATLANTIC SALMON ; EGG NUMBER ; TRADE-OFF ; STREAM ; GROWTH ; SIZE ; AGE
语种: 英语
WOS记录号: WOS:000271264000013
ISSN号: 0378-1909
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7518
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Hao, FuHua; Chen, YiFeng.The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet,ENVIRONMENTAL BIOLOGY OF FISHES,2009,86(1):89-96
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