Biodiversity Science ›› 2015, Vol. 23 ›› Issue (4): 519-526.doi: 10.17520/biods.2014223

• Orginal Article • Previous Article     Next Article

Species composition and stability of nekton community structure in Sandu Bay, Fujian Province

Puqing Song, Longshan Lin*(), Yuan Li, Zhihui Zhong, Ran Zhang   

  1. Third Institute of Oceanography, State Oceanic Administration, Xiamen, Fujian 361005
  • Received:2014-10-20 Accepted:2015-04-03 Online:2015-08-03
  • Lin Longshan
  • About author:

    # Co-first authors

In order to analyze the species composition and evaluate the stability of nekton community structure in Sandu Bay of Fujian Province, species diversity, an Abundance Biomass Comparison (ABC) curve and taxonomic diversity were described based on a net fishing survey conducted in Sandu Bay from October 2012 to September 2013. A total of 195 species belonging to 125 genera, 64 families and 17 orders were recorded including 143 fish species, 47 crustacean species and 5 cephalopod species. Larimichthys crocea was the most dominant species identified in all four surveys and most were escaped groups from fish farms. The other dominant species included Johnius belengerii, Argyrosomus argentatus, gobies, and several crustacean species, which were characteristized by small body size, short breeding period and seasonal or annual drastic fluctuations in biomass. The average Shannon-Wiener diversity index in Sandu Bay was 2.61, and higher in September and October than in January and May. ABC curve analysis showed that the community structure had obvious seasonal changes and the impacting factors may include internal factors and external factors such as the supplement of breeding groups, individual growth, fishery production, and summer fishing moratoriums. This study revealed that the biomass proportion of the large yellow croaker has a very significant negative correlation with Shannon-Wiener diversity index (P < 0.01, R = -0.890) and a significant negative correlation with species number (P < 0.05, R = -0.563). Combined with survey data from recent years, there were 224 fish species in Sandu Bay; based on this data, the average taxonomic distinctness (△+) and the variation in taxonomic distinctness (∧+) were tested. The result showed that the value of △+ in Sandu Bay was 59.5 and the value of ∧+ was 260.8. Compared with other coastal waters in China, the average taxonomic range in Sandu Bay was relatively narrow and the taxonomic status was extremely uneven, indicating the anti-interference ability of the fish community in Sandu Bay was poor.

Key words: ABC curve, biodiversity, taxonomic diversity, Sandu Bay

Fig. 1

The investigation stations of nekton in Sandu Bay, Fujian. S1-S4, Sampling stations."

Table 1

Index of relative importance (IRI) of major species of nekton in Sandu Bay, Fujian"

种类 Species
采样月份 Sampling month
5 9 10 1
大黄鱼 Larimichthys crocea 4,966 3,147 2,175 4,813
龙头鱼 Harpodon nehereus 1,351 1,993
孔虾虎鱼 Trypauchen vagina 1,334 695
白姑鱼 Argyrosomus argentatus 1,393
髭缟虾虎鱼 Tridentiger barbatus 634
日本蟳 Charybdis japonica 475 663 707 479
日本囊对虾 Marsupenanaeus japonicus 460 473
拟矛尾虾虎鱼 Parachaeturichthys polynema 452
鲜明鼓虾 Alpheus distinguendus 421 1,432
须赤虾 Metapenaeopsis barbata 294
葛氏长臂虾 Palaemon gravieri 284 1,639
海鳗 Muraenesox cinereus 277
哈氏仿对虾 Parapenaeopsis hardwickii 1,067
棘头梅童鱼 Collichthys lucidus 953 671 658
纤手梭子蟹 Portunus gracilimanus 406
中华管鞭虾 Solenocera crassicornis 391 1,133
横纹东方鲀 Fugu oblongus 324
红星梭子蟹 Portunus sanguino 1,248
七丝鲚 Coilia grayii 643
黑鳃舌鳎 Cynoglossus roulei 573
斑鰶 Clupanodon punctatus 1,894
直额蟳 Charybdis truncata 958
褐斑三线舌鳎 Cynoglossus trigrammus 405
叫姑鱼 Johnius belengerii 354
矛尾虾虎鱼 Chaeturichthys stigmatias 309
双斑蟳 Charybdis bimaculata 282

Fig. 2

Seasonal variation of nekton species diversity indices in Sandu Bay, Fujian. S1-S4, Sampling stations."

Fig. 3

Relationships between biomass proportion of large yellow croaker with diversity index and species number"

Fig. 4

ABC curves of nekton in Sandu Bay, Fujian"

Fig. 5

The average taxonomic distinctness and the variation in taxonomic distinctness of fish species in Sandu Bay, Fujian"

Table 2

Comparison of taxonomic diversity indices of fish species between Sandu Bay and other areas"

Average taxonomic distinctness
Variation in taxonomic distinctness
三都澳 Sandu Bay 59.5 260.8 本次调查
This investigation
东海陆架 East China Sea Continental Shelf 65.7 120.0 李圣法, 2005
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大亚湾 Daya Bay 62.2 110.0 李娜娜等, 2011
东沙群岛 Dongsha Islands 55.2 110.0 史赟荣等, 2009
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