Zoological Studies

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
Species		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
Thalia rhomboides	A	388 ± 146	85.4	900 ± 357	87.7
Thalia orientalis	S	19 ± 5	24.8	28 ± 9	13.5
Thalia orientalis	A	58 ± 25	75.2	179 ± 34	86.5
Thalia cicar	S	1 ± 7	25.7	-	-
Thalia cicar	A	37 ± 11	74.3	-	-
Thalia democratica	S	20 ± 6	54.7	71 ± 17	53.1
Thalia democratica	A	17 ± 8	45.3	63 ± 25	46.9
Salpa fusiformis	S	7 ± 5	14.2	-	-
Salpa fusiformis	A	41 ± 20	85.8	-	-
Doliolida
Doliolum denticulatum	G	71 ± 19	22.8	119 ± 41	18.7
Doliolum denticulatum	P	241 ± 89	77.2	515 ± 210	81.3
Doliolum nationalis	G	ns	ns	ns	ns
Doliolum nationalis	P	ns	ns	728 ± 546	100.0
Pyrosomatida
Pyrosoma verticillatum	Z	ns	ns	232 ± 161

PG, percentage generation, S, solitary zooid; A, aggregate zooid; G, gonozooid; P, phorozooid; Z, zooid; ns, no sample; -, not dominant in this season.

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