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学科主题: Ecology; Marine & Freshwater Biology
题名: Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis
作者: Zhuang, P; Kynard, B; Zhang, LZ; Zhang, T; Cao, WX
通讯作者: Zhuang, P, Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China
关键词: Acipenseridae ; early life-history ; migration ; habitat preference ; fish behavior ; Yangtze River
刊名: ENVIRONMENTAL BIOLOGY OF FISHES
发表日期: 2002-09-01
卷: 65, 期:1, 页:83-97
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; US Geol Survey, SO Conte Anadromous Fish Res Ctr, Biol Resources Div, Turners Falls, MA 01376 USA
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Ecology ; Marine & Freshwater Biology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
摘要: The Chinese sturgeon, Acipenser sinensis, is an anadromous protected species that presently only spawns in the Yangtze River. Using laboratory experiments, we examined the behavioral preference of young Chinese sturgeon to physical habitat (water depth, illumination intensity, substrate color, and cover) and monitored their downstream migration. Hatchling free embryos were photopositive, preferred open habitat, and immediately upon hatching, swam far above the bottom using swim-up and drift. Downstream migration peaked on days 0-1, decreased about 50% or more during days 2-7, and ceased by day 8. Days 0-1 migrants were active both day and night, but days 2-7 migrants were most active during the day. After ceasing migration, days 8-11 embryos were photonegative, preferred dark substrate and sought cover. Free embryos developed into larvae and began feeding on day 12, when another shift in behavior occurred-larvae returned to photopositive behavior and preferred white substrate. The selective factor favoring migration of free embryos upon hatching and swimming far above the bottom may be avoidance of benthic predatory fishes. Free embryos, which must rely on yolk energy for activity and growth, only used 19 cumulative temperature degree-days for peak migration compared to 234 degree-days for growth to first feeding larvae, a 1 : 12 ratio of cumulative temperature units. This ratio suggests that sturgeon species with large migratory embryos, like Chinese sturgeon, which require a high level of energy to swim during migration, may migrate only a short time to conserve most yolk energy for growth.
英文摘要: The Chinese sturgeon, Acipenser sinensis, is an anadromous protected species that presently only spawns in the Yangtze River. Using laboratory experiments, we examined the behavioral preference of young Chinese sturgeon to physical habitat (water depth, illumination intensity, substrate color, and cover) and monitored their downstream migration. Hatchling free embryos were photopositive, preferred open habitat, and immediately upon hatching, swam far above the bottom using swim-up and drift. Downstream migration peaked on days 0-1, decreased about 50% or more during days 2-7, and ceased by day 8. Days 0-1 migrants were active both day and night, but days 2-7 migrants were most active during the day. After ceasing migration, days 8-11 embryos were photonegative, preferred dark substrate and sought cover. Free embryos developed into larvae and began feeding on day 12, when another shift in behavior occurred-larvae returned to photopositive behavior and preferred white substrate. The selective factor favoring migration of free embryos upon hatching and swimming far above the bottom may be avoidance of benthic predatory fishes. Free embryos, which must rely on yolk energy for activity and growth, only used 19 cumulative temperature degree-days for peak migration compared to 234 degree-days for growth to first feeding larvae, a 1 : 12 ratio of cumulative temperature units. This ratio suggests that sturgeon species with large migratory embryos, like Chinese sturgeon, which require a high level of energy to swim during migration, may migrate only a short time to conserve most yolk energy for growth.
关键词[WOS]: SHORTNOSE STURGEON ; LIFE-HISTORY ; BREVIROSTRUM ; BIOLOGY ; RIVER
语种: 英语
WOS记录号: WOS:000177327400008
ISSN号: 0378-1909
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9820
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 Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.US Geol Survey, SO Conte Anadromous Fish Res Ctr, Biol Resources Div, Turners Falls, MA 01376 USA

Recommended Citation:
Ping Zhuang; Boyd Kynard; Longzhen Zhang; Tao Zhang & Wenxuan Cao.Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis,ENVIRONMENTAL BIOLOGY OF FISHES,2002,65(1):83-97
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