Life-history strategies of Acrossocheilus fasciatus (Barbinae, Cyprinidae) in the Huishui Stream of the Qingyi watershed, China

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 水生生物多样性与资源保护研究中心 > 期刊论文

	Life-history strategies of Acrossocheilus fasciatus (Barbinae, Cyprinidae) in the Huishui Stream of the Qingyi watershed, China
	Yan, Yun-zhi 1; Zhu, Ren 1; He, Shan 1; Chu, Ling 1; Liang, Yang-yang 2; Chen, Yi-feng 2
刊名	ICHTHYOLOGICAL RESEARCH
	2012-07-01
卷号	59 期号:3 页码:202-211
关键词	Age Growth Reproduction Acrossocheilus fasciatus
ISSN号	1341-8998
通讯作者	Yan, Yun-zhi ; Zhu, Ren ; He, Shan ; Chu, Ling ; Liang, Yang-yang ; Chen, Yi-feng
中文摘要	Life-history traits of Acrossocheilus fasciatus were examined using 384 specimens collected monthly during May 2009 and April 2010 in the Huishui Stream of the Qingyi watershed, China. Using scales for age determination, female and male fish comprised five and four age groups, respectively. The monthly changes in marginal increment ratio suggested that annuli on scales were formed during March through May. Total lengths back-calculated significantly increased with age for both sexes and varied significantly between the two sexes at each age. The fact that females had larger body size and grew faster than males indicated the sexual size dimorphism for this species. Both sexes got their 50% maturity at age 3, when females and males were 105.3 and 112.1 mm total length, respectively. Based on the monthly changes in the gonado-somatic index and egg-development process, fish spawned from April through August. Absolute fecundity ranged from 295 to 3,573 eggs per fish and increased significantly with age. But relative fecundity, ranging from 11.77 to 69.96 eggs/g, was not significantly different among age groups. Compared with the life-history traits of an upstream population in the Puxi Stream (a headwater stream within this study watershed), the downstream population of A. fasciatus in the Huishui Stream (a 4th-order stream) exhibits larger body size, faster somatic growth, later sexual maturity, and lower reproductive investment. These variations in life-history strategies between the two populations could perhaps be explained by the spatial heterogeneity in habitat environment along the upstream-downstream gradient in this watershed.
英文摘要	Life-history traits of Acrossocheilus fasciatus were examined using 384 specimens collected monthly during May 2009 and April 2010 in the Huishui Stream of the Qingyi watershed, China. Using scales for age determination, female and male fish comprised five and four age groups, respectively. The monthly changes in marginal increment ratio suggested that annuli on scales were formed during March through May. Total lengths back-calculated significantly increased with age for both sexes and varied significantly between the two sexes at each age. The fact that females had larger body size and grew faster than males indicated the sexual size dimorphism for this species. Both sexes got their 50% maturity at age 3, when females and males were 105.3 and 112.1 mm total length, respectively. Based on the monthly changes in the gonado-somatic index and egg-development process, fish spawned from April through August. Absolute fecundity ranged from 295 to 3,573 eggs per fish and increased significantly with age. But relative fecundity, ranging from 11.77 to 69.96 eggs/g, was not significantly different among age groups. Compared with the life-history traits of an upstream population in the Puxi Stream (a headwater stream within this study watershed), the downstream population of A. fasciatus in the Huishui Stream (a 4th-order stream) exhibits larger body size, faster somatic growth, later sexual maturity, and lower reproductive investment. These variations in life-history strategies between the two populations could perhaps be explained by the spatial heterogeneity in habitat environment along the upstream-downstream gradient in this watershed.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Zoology
研究领域[WOS]	Zoology
关键词[WOS]	SEXUAL SIZE DIMORPHISM ; HUANGSHAN MOUNTAIN ; ENVIRONMENTAL VARIATION ; FISH ASSEMBLAGES ; REACTION NORMS ; MARINE FISH ; PUXI STREAM ; AGE ; GROWTH ; MANAGEMENT
收录类别	SCI
资助信息	National Basic Research Program of China [2009CB119200]; Natural Science Foundation of China [31172120]; Anhui Provincial Natural Science Foundation [090413080]
语种	英语
WOS记录号	WOS:000306931600002
公开日期	2013-01-09
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/17168]
专题	水生生物研究所_水生生物多样性与资源保护研究中心_期刊论文
作者单位	1.Anhui Normal Univ, Prov Key Lab Biot Environm & Ecol Safety Anhui, Coll Life Sci, Wuhu 241000, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Yan, Yun-zhi,Zhu, Ren,He, Shan,et al. Life-history strategies of Acrossocheilus fasciatus (Barbinae, Cyprinidae) in the Huishui Stream of the Qingyi watershed, China[J]. ICHTHYOLOGICAL RESEARCH,2012,59(3):202-211.
APA	Yan, Yun-zhi,Zhu, Ren,He, Shan,Chu, Ling,Liang, Yang-yang,&Chen, Yi-feng.(2012).Life-history strategies of Acrossocheilus fasciatus (Barbinae, Cyprinidae) in the Huishui Stream of the Qingyi watershed, China.ICHTHYOLOGICAL RESEARCH,59(3),202-211.
MLA	Yan, Yun-zhi,et al."Life-history strategies of Acrossocheilus fasciatus (Barbinae, Cyprinidae) in the Huishui Stream of the Qingyi watershed, China".ICHTHYOLOGICAL RESEARCH 59.3(2012):202-211.