Biology, fisheries, and conservation of sturgeons and paddlefish in China

Wei, Qiwei; Ke, Fu'en; Zhang, Jueming; Zhuang, Ping; Luo, Junde; Zhou, Rueqiong; Yang, Wenhua

doi:10.1023/a:1007395612241

Cited by 249 publications

(49 citation statements)

References 6 publications

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“…Traditionally, A. nudiventris was considered as the only representative of the subgenus Lioniscus (Berg, 1911(Berg, , 1948bSokolov, 1989b), while Artyukhin (1995) put it into the subgenus Sterleta together with A. ruthenus and A. schrenckii. A. dabryanus is a freshwater sturgeon inhabiting the Yangtze River (Wei et al, 1997), and Artyukhin (1995) combined it with A. sinensis in the subgenus Sinosturio. We assume that an anadromous ancestral form of these species inhabited some ancient sea basin in Central Asia.…”

Section: Figmentioning

confidence: 99%

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Molecular Phylogeny of Acipenserinae

Birstein

DeSalle

1998

Molecular Phylogenetics and Evolution

183

112

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Section: Figmentioning

confidence: 99%

“…transmontanus most likely originated in Asia: A. schrenckii, basal for the clade, inhabits the Amur River (Berg, 1948b), and A. sinensis inhabits the Yangtze River (Wei et al, 1997). This group might have appeared in the Upper Cretaceous (80-90 my ago), when transgression of the Tethys Sea was the most advanced in Asia (Smith et al, 1994).…”

Section: Figmentioning

confidence: 99%

Molecular Phylogeny of Acipenserinae

Birstein

DeSalle

1998

Molecular Phylogenetics and Evolution

183

112

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“…In the late 20th Century, their population declined dramatically due to overfishing and habitat degradation (Wei et al, 1997). For one thing, the construction of the Gezhouba Dam (GD) in 1981 blocked the upstream migration route of this species, and also reduced their spawning ground length from 800 to 30 km.…”

Section: Introductionmentioning

confidence: 99%

Applying instream flow incremental method for the spawning habitat protection of Chinese sturgeon (Acipenser sinensis)

Ban

Liu

et al. 2011

River Research & Apps

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The Chinese sturgeon, Acipenser sinensis, is an anadromous species that spawns in the Yangtze River and Pearl River of China. Its population has declined dramatically since the construction of the Gezhouba Dam (GD) in 1981 and then with the impoundment of the Three Gorges Dam (TGD) upstream of the GD in 2003. This paper presents a quantitative method based on the instream flow incremental method to explore the relationship between the fish spawning habitat and the operations of the GD and TGD, aiming to find a solution for conservation of the species. A two-dimensional hydrodynamic model was built with the River2D to simulate the hydraulic behaviour of the stream below the GD. Habitat suitability index was determined by the biological data of the fish collected in the field. The two parts were then integrated through a geographical information system developed via ArcGIS to outline the fish habitat area variation with flows. The decision support system is applied to set up a habitat time series for validating the assumption that more habitats have the potential to support more fish. The fish habitat results for alternative instream flow schemes are then compared with one another for defining the optimal flow requirements and evaluating effects of reservoir operation alternatives in order to improve the operation management for the GD and TGD projects. The results show that the optimal flow for spawning of the fish is about 7000-13000 m 3 /s and the optimal inlets combination is where the inflow comes from two power plants.

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“…However, after the damming of the Yangtze River by the Gezhouba Dam in Yichang on 4 January 1981, the spawning areas for A. sinensis were no longer accessible and fish alternatively spawned within a 30 km section below the Dam (Hu et al 1983(Hu et al , 1985(Hu et al , 1992Yu et al 1986). Moreover, only two spawning areas (22 and 23) have been found in the area downstream of the Dam (Wei et al 1997(Wei et al , 1998. The two spawning areas (20 and 21) in the Pearl River also became dysfunctional in the late 1970s as a result of the decline of the stock (Zhang 1987(Zhang , 1993.…”

Section: Study Areamentioning

confidence: 99%

“…In the late 20th Century, the population of A. sinensis declined dramatically because of overfishing and habitat degradation (Wei et al 1997). The species was listed as a First Class Protected Animal by the national government in 1989.…”

Section: Introductionmentioning

confidence: 99%

A bedform morphology hypothesis for spawning areas of Chinese sturgeon

Zhang

Wei

2008

Environ Biol Fish

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Results from previous research suggested that geomorphic characteristics may be important controlling factors among other microhabitat variables for spawning fish. We investigated the bedform morphology of seven spawning areas (five historic and two present spawning areas) of Chinese sturgeon (Acipenser sinensis) by analysis of relief maps of the riverbed and by field surveys. We conclude that the topographic characteristics of the spawning areas include rocky or gravelly substrate river bend, large variations in water depth and river width and a slope with moderate length and slope. The turning structure and the adverse slope may be the most important topographic characteristics for the spawning areas. Combined with the reproductive occurrence of the fish in these spawning areas, we tentatively propose a bedform morphology hypothesis for the spawning areas. We consider that a spawning area of A. sinensis should consist of three functional areas: Mating area (M), Dispersal area (D) and Incubation area (I). M, D and I are distributed along the water current and their bedform characteristics are clearly different. M is the place for mature fish to mate and spawn. It is usually below a riffle with rolling terrain. D is the place for fertilizing and dispersing fertilized eggs. It is usually in a river bend with sharp variations in terrain, such as deep pools or steep slopes. I is the place for dispersal of fertilized eggs. It is usually in long point bars or broad shallow areas with rocky substrate. This hypothesis could serve as a guideline for improving the present spawning areas or constructing new spawning areas, so as to rehabilitate the wild stock of the sturgeon.

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Biology, fisheries, and conservation of sturgeons and paddlefish in China

Cited by 249 publications

References 6 publications

Molecular Phylogeny of Acipenserinae

Molecular Phylogeny of Acipenserinae

Applying instream flow incremental method for the spawning habitat protection of Chinese sturgeon (Acipenser sinensis)

A bedform morphology hypothesis for spawning areas of Chinese sturgeon

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