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Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis
Ping Zhuang; Boyd Kynard; Longzhen Zhang; Tao Zhang & Wenxuan Cao; Zhuang, P, Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China
2002
Source PublicationENVIRONMENTAL BIOLOGY OF FISHES
Volume65Issue:1Pages:83-97
AbstractThe 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.
KeywordAcipenseridae Early Life-history Migration Habitat Preference Fish Behavior Yangtze River
DepartmentChinese 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
Subject AreaEcology ; Marine & Freshwater Biology
Indexed BySCI
WOS IDWOS:000177327400008
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9820
Collection期刊论文
Corresponding AuthorZhuang, P, Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Ping Zhuang,Boyd Kynard,Longzhen Zhang,et al. Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis[J]. ENVIRONMENTAL BIOLOGY OF FISHES,2002,65(1):83-97.
APA Ping Zhuang,Boyd Kynard,Longzhen Zhang,Tao Zhang & Wenxuan Cao,&Zhuang, P, Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Jinzhou 434000, Hubei, Peoples R China.(2002).Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis.ENVIRONMENTAL BIOLOGY OF FISHES,65(1),83-97.
MLA Ping Zhuang,et al."Ontogenetic behavior and migration of Chinese sturgeon, Acipenser sinensis".ENVIRONMENTAL BIOLOGY OF FISHES 65.1(2002):83-97.
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