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The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet
Hao, FuHua1,2; Chen, YiFeng1; Chen, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China
2009-09-01
Source PublicationENVIRONMENTAL BIOLOGY OF FISHES
ISSN0378-1909
Volume86Issue:1Pages:89-96
AbstractSome 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.; 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.
SubtypeArticle
KeywordSaL.o Trutta Fario L. Reproduction Tibet
Department[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
Subject AreaEcology ; Marine & Freshwater Biology
DOI10.1007/s10641-008-9363-5
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEcology ; Marine & Freshwater Biology
WOS IDWOS:000271264000013
WOS KeywordMACROSTIGMA DUMERIL 1858 ; INTERPOPULATION VARIATION ; SPAWNING CHARACTERISTICS ; ATLANTIC SALMON ; EGG NUMBER ; TRADE-OFF ; STREAM ; GROWTH ; SIZE ; AGE
Funding OrganizationNational Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125] ; National Natural Science Foundation of China [30123004]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-SW-125]
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7518
Collection期刊论文
Corresponding AuthorChen, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Hao, FuHua,Chen, YiFeng,Chen, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China. The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet[J]. ENVIRONMENTAL BIOLOGY OF FISHES,2009,86(1):89-96.
APA Hao, FuHua,Chen, YiFeng,&Chen, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China.(2009).The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet.ENVIRONMENTAL BIOLOGY OF FISHES,86(1),89-96.
MLA Hao, FuHua,et al."The reproductive traits of brown trout (Salmo trutta fario L.) from the Yadong River, Tibet".ENVIRONMENTAL BIOLOGY OF FISHES 86.1(2009):89-96.
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