The four species of carp present in China (grass carp, black silver and bighead carp) are all commercially important freshwater fish species. However, the construction large-scale hydraulic projects, such as dams, along with other anthropogenic changes to river systems has resulted rapid decline abundance Indeed, effect dams on reproduction become a highly sensitive issue China. Historically, Ganjiang River contained 12 spawning grounds for After Wan'an Dam, however, these areas were...

The Ganjiang River (length: 823 km; drainage area: 82,809 km2) is the largest river that flows into Poyang Lake and an important tributary of Yangtze River. In this study, fish fauna were collected from 10 stations in lower reaches (YC: Yichun, XY: Xinyu, SG: Shanggao, GA: Ganan, ZS: Zhangshu, FC: Fengcheng, NC: Nanchang, QS: Qiaoshe, NX: Nanxin, CC: Chucha) March 2017 to February 2018. species composition distribution as well spatio-temporal variation biodiversity abundance then examined....

This study examined the status of fish resources in Fuhe River Basin, Jiangxi Province, China, from March 2018 to February 2019. A total 25,915 individuals, belonging 6 orders, 18 families, 61 genera, and 85 species, were collected nine sampling sites, with Cypriniformes accounting for 57.65% number species. Overall, samples dominated by mountain-stream species inhabiting middle-lower reaches, an omnivorous feeding habit drifting eggs. Moreover, 73 defined as Least Concern on International...

Triticum aestivum-Hayaldia villosa translocation line V3 has shown effective all-stage resistance to the seven dominant pathotypes of Puccinia striiforms f. sp. tritici prevalent in China. To elucidate genetic basis resistance, segregating populations were developed from cross between and susceptible genotype Mingxian 169, seedlings parents F2 progeny tested with six pathotypes, including CYR29, CYR31, CYR32-6, CYR33, Sun11-4, Sun11-11, F1 plants F3 lines also inoculated Sun11-11 confirm...

2006年lO月-2009年3月对鄱阳湖湖门水域拖网、定置网和虾笼渔获鱼类进行逐月采样分析.结果表明, 该水域至少有鱼类50种, 隶属于6目12科42属.鱼类组成以湖泊定居性鱼类为主, 没有发现过河口洄游性鱼类.渔获物组成以光泽黄颡鱼、短颌鲚和(歺又鱼)等小型鱼类为主.定置网渔获物平均数量和平均产量均是夏季 >秋季 >春季 >冬季.种类丰度及产量变化与该水域的水位和水温变化总体呈正相关关系.Shannon-Wiener多样性指数月变化在1.16-2.58之间, 多数月份指数值在2以下, 多样性水平偏低.目前.鄱阳湖湖口水域定置网捕捞规模较大, 渔获鱼类中经济鱼类所占比例较少, 且绝大多数个体较小, 应加强鱼类资源的管理和保护。;The fish species diversity and community structure in Hukou area of Lake Poyang were investigated from October 2006 to March 2009.A total 50 was classified into 6 orders, 12...

In this study, the complete mitochondrial genome (mitogenome) sequence of Coilia brachygnathus (Clupeiformes: Engraulidae) was determined by long PCR and primer walking methods. The is 16,677 bp in length contains 13 protein-coding genes, 2 ribosomal RNA 22 transfer genes as well a displacement loop (D-loop). overall base composition A(31.21%), T(26.25%), C(27.06%), G(15.48%). mitogenome C. displayed novel gene order arrangement compared with published ectenes to date. would contribute...

The multislope ski-rental problem is an extension of the classical problem, where player has several lease options in addition to pure rent and buy options. For additive general model, Lotker, Patt-Shamir Rawitz [in: SIAM J. Discr. Math. 26 (2012) 718–736] obtained a randomized algorithm with competitive ratio bounded by . However, obtaining better bound on factor as function slopes parameters remains open their paper. In this paper, we study for ski rental extend proposed Lotker et al.

Abstract Fish community structure could be directly and indirectly affected by biotic, abiotic anthropogenic factors. Although fish suffered less disturbance than big rivers, moderate also change in mountain rivers due to environmental variables such as current velocity, water depth, temperature, dissolved oxygen acidity. However, there are limited information about changes composition river where human disturbance. So the objective of this study was elucidate diversity assembly patterns...

Maintaining fish diversity is essential for environmental protection. To characterize the composition of tributaries and mainstream in upper reaches Ganjiang River, we identified seventy-five species 15 families 14 sampling sites. These data were analyzed using inclusion index at taxonomic level (TINCLi), importance value (IVI), indices (Δ + Λ ), cluster analysis non-metric multidimensional scaling (nMDS). The results showed that most common dominant order was Cypriniformes, represented...

In this study, the complete mitochondrial genome (mitogenome) sequence of Rhodeus lighti (Cypriniformes: Cyprinidae) was determined by long PCR and primer walking methods. The is 16,677 bp in length contains 13 protein-coding genes, 2 ribosomal RNA 22 transfer genes as well a displacement loop (D-loop). overall base composition A (28.87%), T (27.22%), C (26.53%) G (17.38%). mitogenome R. displayed novel gene order arrangement compared with published sinensis to date. would contribute...

In the title centrosymmetric compound, [Cd(C6H4FN2O4)2(C7H6N2)2(H2O)2], cadmium(II) cation is coordinated by one O atom from each 5-fluoro-2,4-dioxo-1,2,3,4-tetra­hydro­pyrimidine-1-acetate anion, N benzimidazole ligand and two water mol­ecules. The geometry around cation, which located on a center of inversion, distorted octa­hedral. Mol­ecules, function as supramolecular blocks, are linked inter­molecular N—H⋯O O—H⋯O hydrogen bonds into three-dimensional network, reinforced π–π inter­actions.

Jinggangshan National Nature Reserve is located in the middle reach of Luoxiao Mountains south-western Jiangxi Province. The fish fauna mountain streams nature reserve was investigated seasonally during 2011. A total 553 samples were collected and classified into 12 families 38 species. did not include any exotic most abundant species Pseudogastromyzon changtingensis tungpeiensis, followed by Acrossocheilus parallens, Rhinogobius cliffordpopei giurinus. 16 found to be endemic China. Current...

By replacing the distances between pairs of vertices with relative distances, we define a novel overall hyper-Wiener index (NOR); extends usefulness and to unsaturated hydrocarbons.

In the centrosymmetric title polymer, catena-poly[[bis[aqua­(1,10-phenanthroline-κ2N,N′)lead(II)]-di-μ3-5-carboxy-3-sulfonatobenzoato-1:2:1′κ4O3:O1,O1′:O1;2′:1:2κ4O1:O1,O1′:O3] dihydrate], {[Pb(C8H4O7S)(C12H8N2)(H2O)]·H2O}n, each seven-coordinate lead(II) ion is bound by five O atoms from one water molecule and three 5-sulfoisophthalate (sip) anions, two N a 1,10-phenanthroline (phen) ligand. The sip sulfonate group monodentate. One atom of carboxyl­ate chelated to Pb2+ cation, with other...