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Table 5 Average abundances and percentage generation of the six predominant thaliacean species in 2004

From: Influence of monsoon-driven hydrographic features on thaliacean distribution in waters around Taiwan, western North Pacific Ocean

Species   Winter Summer
Mean ± SE (individuals/1,000 m3) PG Mean ± SE (individuals/1,000 m3) PG
Salpida      
Thalia rhomboides S 66 ± 20 14.6 127 ± 49 12.3
A 388 ± 146 85.4 900 ± 357 87.7
Thalia orientalis S 19 ± 5 24.8 28 ± 9 13.5
A 58 ± 25 75.2 179 ± 34 86.5
Thalia cicar S 1 ± 7 25.7 - -
A 37 ± 11 74.3 - -
Thalia democratica S 20 ± 6 54.7 71 ± 17 53.1
A 17 ± 8 45.3 63 ± 25 46.9
Salpa fusiformis S 7 ± 5 14.2 - -
A 41 ± 20 85.8 - -
Doliolida      
Doliolum denticulatum G 71 ± 19 22.8 119 ± 41 18.7
P 241 ± 89 77.2 515 ± 210 81.3
Doliolum nationalis G ns ns ns ns
P ns ns 728 ± 546 100.0
Pyrosomatida      
Pyrosoma verticillatum Z ns ns 232 ± 161  
  1. PG, percentage generation, S, solitary zooid; A, aggregate zooid; G, gonozooid; P, phorozooid; Z, zooid; ns, no sample; -, not dominant in this season.