Biodiversity Science ›› 2019, Vol. 27 ›› Issue (10): 1081-1089.doi: 10.17520/biods.2019264

• Original Papers • Previous Article     Next Article

Fish diversity and resource status in the Nanguang River, a tributary of upper Yangtze River

Dai Mengmeng1, Yang Kun2, Li Shu1, Wang Xiaodong1, Song Zhaobin1, 3, *()   

  1. 1 Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu 610065
    2 Institute of Ecology, China West Normal University, Nanchong, Sichuan 637009
    3 Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065
  • Received:2019-08-20 Accepted:2019-11-02 Online:2019-10-20
  • Song Zhaobin E-mail:zbsong@scu.edu.cn

Nanguang River is a tributary of upper Yangtze River that provides important resources and food to various communities. To understand the current status of fish diversity within Nanguang River, we sampled the river and its primary tributaries six times from November 2017 to September 2018. A total of 64 fish species were collected, two of which (Percocypris pingi and Procypris rabaudi) are protected fish in Sichuan Province, 17 species were endemic to the upper Yangtze River, and 9 were listed as endangered or vulnerable species in Red List of China’s Vertebrates. The most dominant fish were small in size, of which Zacco platypus and Cyprinus carpio were most dominant. Additionally, the Nanguang River fish community possess considerable diversity based on Margalef species richness index, Shannon-Wiener diversity index, Simpson dominance index, and Pielou evenness index values. While there are obvious differences in fish composition across different reaches of the Nanguang River, dam construction and overfishing may have considerably impacted fish distribution and fish resources, the results of which our investigation presents.

Key words: Nanguang River, species diversity, fish resources, dominant species

Fig. 1

Sampling sites of fish investigation in the Nanguang River. Symbol meanings are shown in Table 1."

Table 1

Information of sampling sites for fish investigation in the Nanguang River"

河流 River 河段 Reach 采样点(代码) Sampling site (Code) 纬度 Latitude (N) 经度 Longitude (E)
干流
Mainstream
上游
Upstream
高田乡 Gaotian Township (M1) 27°57° 105°09°
罗布乡 Luobu Township (M2) 27°57° 105°02'
旧城镇 Jiucheng Town (M3) 28°02° 105°04°
观斗乡 Guandou Township (M4) 28°02° 104°58°
石碑乡 Shibei Township (M5) 28°06° 104°57°
中游
Midstream
罗渡电站库区 Reservoir of Luodu Hydropower Station (M6) 28°05° 104°51°
罗渡大桥 Luodu Bridge (M7) 28°06° 104°49°
上罗镇 Shangluo Town (M8) 28°08° 104°48°
共腾村 Gongteng Village (M9) 28°11° 104°42°
沐滩乡 Mutan Township (M10) 28°13° 104°40°
孝儿镇 Xiaoer Town (M11) 28°16° 104°40°
趱滩乡 Zantan Township (M12) 28°19° 104°38°
下游
Downstream
文江镇 Wenjiang Town (M13) 28°22° 104°34°
贾村 Jia Village (M14) 28°30° 104°29°
来复镇 Laifu Town (M15) 28°33° 104°34°
大窝镇 Dawo Town (M16) 28°36° 104°37°
月江镇 Yuejiang Town (M17) 28°39° 104°40°
南广镇 Nanguang Town (M18) 28°41° 104°41°
支流
Tributary
洛亥河
Luohai River
洛亥镇 Luohai Town (T1) 28°01° 104°54°
黄桷村 Huangjue Village (T2) 28°04° 104°51°
镇舟河
Zhenzhou River
大雪山镇 Daxueshan Town (T3) 27°55° 104°43°
镇舟镇 Zhenzhou Town (T4) 28°01° 104°41°
维新镇 Weixin Town (T5) 28°09° 104°41°
巡司河 Xunsi River 武德乡 Wude Township (T6) 28°05° 104°35°
宋江河
Songjiang River
双腾镇 Shuangteng Town (T7) 28°06° 104°29°
塘坝乡 Tangba Township (T8) 28°07° 104°27°
羊田乡 Yangtian Township (T9) 28°14° 104°30°
罗场镇 Luochang Town (T10) 28°17° 104°29°

Table 2

The index of relative importance of fish species in the Nanguang River"

种类
Species
数量百分比
Percentage of number (%)
重量百分比
Percentage of weight (%)
出现频率
Frequency of occurrence
相对重要性指数
Index of relative importance (IRI)
优势类型
Dominant type
宽鳍鱲 Zacco platypus 17.65 6.82 0.71 1,747.45 D
Cyprinus carpio 0.65 20.37 0.54 1,125.78 D
Carassius auratus 2.48 8.89 0.75 852.53 C
麦穗鱼 Pseudorasbora parva 9.29 2.48 0.71 840.62 C
高体鳑鲏 Rhodeus ocellatus 9.95 1.39 0.64 728.73 C
切尾拟鲿 Tachysurus truncatus 4.64 3.77 0.75 630.83 C
马口鱼 Opsariichthys bidens 3.71 2.87 0.54 352.39 C
瓦氏黄颡鱼 Tachysurus vachellii 3.80 3.49 0.46 338.42 C
唇? Hemibarbus labeo 2.20 4.23 0.46 298.45 C
短须颌须鮈 Gnathopogon imberbis 4.38 1.21 0.50 279.59 C
棒花鱼 Abbottina rivularis 5.28 1.67 0.39 272.95 C
红尾副鳅 Homatula variegata 3.91 1.28 0.50 259.44 C
乐山小鳔鮈 Microphysogobio kiatingensis 4.83 1.27 0.39 239.44 C
蛇鮈 Saurogobio dabryi 3.61 2.58 0.32 199.23 C
子陵吻鰕虎鱼 Rhinogobius giurinus 2.93 0.63 0.54 190.79 C
泉水鱼 Pseudogyrinocheilus prochilus 1.66 2.62 0.43 183.77 C
翘嘴鮊 Culter alburnus 0.38 5.05 0.25 135.87 C
短体副鳅 Homatula potanini 2.82 0.91 0.36 133.23 C
泥鳅 Misgurnus anguillicaudatus 1.11 0.55 0.61 101.08 C
光泽黄颡鱼 Tachysurus nitidus 1.77 1.15 0.29 83.56 G
黄颡鱼 Tachysurus fulvidraco 0.45 1.22 0.46 77.76 G
大眼鳜 Siniperca knerii 1.03 2.53 0.21 76.35 G
Silurus asotus 0.20 1.19 0.46 64.28 G
草鱼 Ctenopharyngodon idella 0.07 2.88 0.21 63.11 G
福建纹胸鮡 Glyptothorax fokiensis 1.69 0.62 0.25 57.84 G
粗唇鮠 Tachysurus crassilabris 0.49 0.71 0.46 55.98 G
贝氏高原鳅 Triplophysa bleekeri 2.17 0.40 0.18 45.79 G
齐口裂腹鱼 Schizothorax prenanti 0.70 1.63 0.18 41.64 G
南方鲇 Silurus meridionalis 0.16 2.60 0.14 39.40 G
花? Hemibarbus maculatus 0.51 0.89 0.25 34.92 G
四川华吸鳅 Sinogastromyzon szechuanensis 1.13 0.15 0.25 31.99 G
大鳍鳠 Hemibagrus macropterus 0.27 0.99 0.25 31.54 G
大鳞副泥鳅 Paramisgurnus dabryanus 0.29 0.29 0.36 20.83 G
中华倒刺鲃 Spinibarbus sinensis 0.06 0.84 0.18 16.08 G
黑尾? Hemiculter tchangi 0.80 0.45 0.11 13.45 G
中华沙鳅 Sinibotia superciliaris 0.32 0.16 0.21 10.21 G
云南光唇鱼 Acrossocheilus yunnanensis 0.31 1.03 0.07 9.63 R
其他 Others 2.30 8.17 1.50 62.13 R

Table 3

Composition of fish collected from different reaches of the Nanguang River"

河流
River
河段
Reach
种数
Number of species
种数百分比
Percentage of species (%)
数量
Sample size
数量百分比
Percentage of quantity (%)
干流 Mainstream 上游 Upstream 31 48.44 2,950 20.11
中游 Midstream 42 65.63 4,250 28.98
下游 Downstream 43 67.19 1,583 10.79
小计 Total 56 87.50 8,783 59.89
支流 Tributary 洛亥河 Luohai River 22 34.38 459 3.13
镇舟河 Zhenzhou River 24 37.50 3,004 20.48
巡司河 Xunsi River 16 25.00 1,254 8.55
宋江河 Songjiang River 21 32.81 1,166 7.95
小计 Total 41 64.06 5,883 40.11

Fig. 2

Fish diversity of different reaches in the Nanguang River. UM, Upstream (Mainstream); MM, Midstream (Mainstream); DM, Downstream (Mainstream); LT, Luohai River (Tributary); ZT, Zhenzhou River (Tributary); XT, Xunsi River (Tributary); ST, Songjiang River (Tributary)."

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