Seasonal dynamics of planktonic pteropods in the Taiwan Strait, western North Pacific Ocean

doi:10.17520/biods.2015285

Abstract

Abstract:

Zooplankton samples and hydrographic data were collected in the Taiwan Strait (TS) on Fishery Research I cruises during the winter (January) and summer (July) of 2006, to investigate the seasonal and spatial distribution of planktonic pteropods associated with hydrographic conditions. Pteropod abundance and species diversity were higher in summer than in winter, while species richness showed no difference between seasons. The pteropod community structure was similar between seasons, but the abundance ranked differently. Creseis clava, C. acicula, and Limacina trochiformis predominated in summer. Together they accounted for 97% of the total pteropod catches, and, C. clava accounted for 62% of the total catch. Limacina inflata was the most common species in winter, and accounted for 72% of the total catch. The spatial distribution of the abundance of pteropods showed seasonal differences. Higher abundance in the southern TS occurred in winter but in the northern TS occurred in summer. Greater species richness and diversity of pteropods was usually observed in the southern TS during both seasons. Based on our results of hydrographical station groups and their biotic and environmental characteristics, we propose that in the study area the distribution pattern of the pteropod assemblage was closely correlated with the seasonal succession of water masses driven by monsoons.

Key words: Taiwan Strait, pteropods, distribution, monsoon, hydrography

Wen-Tseng Lo, Bor-Shiuan Lau. Seasonal dynamics of planktonic pteropods in the Taiwan Strait, western North Pacific Ocean[J]. Biodiv Sci, 2016, 24(7): 757-766.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2015285

https://www.biodiversity-science.net/EN/Y2016/V24/I7/757

Figures/Tables 7

References 29

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	冬季 Winter	夏季 Summer
温度 Temperature (℃)	20.37±0.79^***	28.56±0.35^***
盐度 Salinity	33.82±0.12	33.62±0.07
叶绿素a Chlorophyll a (µg/L)	0.12±0.02^***	0.05±0.01^***
翼足类总丰度 Pteropods (ind./100 m³)	36±14^***	426±305^***
种类数 Mean species no. (Total)	4±1 (16)	4±1 (17)
多样性指数 (H’)	0.7±0.3	1.1±0.2

	冬季 Winter	夏季 Summer
温度 Temperature (℃)	20.37±0.79^***	28.56±0.35^***
盐度 Salinity	33.82±0.12	33.62±0.07
叶绿素a Chlorophyll a (µg/L)	0.12±0.02^***	0.05±0.01^***
翼足类总丰度 Pteropods (ind./100 m³)	36±14^***	426±305^***
种类数 Mean species no. (Total)	4±1 (16)	4±1 (17)
多样性指数 (H’)	0.7±0.3	1.1±0.2

种类 Species	冬季 Winter			夏季 Summer
种类 Species	平均丰度 Abundance	相对丰度 RA	出现率 OR	平均丰度 Abundance	相对丰度 RA	出现率 OR
马蹄螔螺 Limacina trochiformis	0.44±0.2	1.22	35.29	35.92±19.9	8.42	76.47
泡螔螺 L. bulimoides	1.37±0.55	3.85	35.29	0.39±0.23	0.09	17.65
胖螔螺 L. inflata	25.73±11.1	72.24	52.94	5.62±3.05	1.32	47.06
螔螺属 Limacina sp.	0.05±0.05	0.14	5.88	0	0	0
强卷螺 Agadina stimpsoni	1.32±0.73	3.7	35.29	0.13±0.1	0.03	11.76
强卷螺属 Agadina sp.	0.04±0.04	0.12	5.88	0.32±0.12	0.08	35.29
芽笔帽螺 Creseis virgula	0.69±0.55	1.95	23.53	0.09±0.05	0.02	17.65
锥笔帽螺 C.virgula var. conica	0.64±0.43	1.8	17.65	2.65±1.61	0.62	23.53
尖笔帽螺 C. acicula	2.6±1.57	7.3	35.29	111.16±91.41	26.06	41.18
棒笔帽螺 C. clava	1.69±1.11	4.74	23.53	266.42±259.33	62.46	70.59
帽螺属 Creseis sp.	0.09±0.06	0.26	11.76	0.2±0.14	0.05	11.76
锥棒螺 Styliola subula	0.7±0.4	1.97	29.41	0	0	0
棒螺属 Styliola sp.	0	0	0	0.07±0.07	0.02	5.88
蛆状螺 Cuvierina columnella	0	0	0	0.03±0.03	0.01	5.88
尖菱蝶螺 Clio pyramidata	0.02±0.02	0.06	5.88	0	0	0
三齿驼蝶螺 Cavolinia tridentata	0.05±0.03	0.13	11.76	0	0	0
长吻龟螺 C. longirostris	0	0	0	0.03±0.03	0.01	5.88
角长吻龟螺 C. longirostris var. angulata	0	0	0	0.1±0.1	0.02	5.88
球龟螺 C. globulosa	0.14±0.1	0.39	11.76	0.03±0.03	0.01	5.88
宽弯龟螺 C. labiata	0.04±0.03	0.11	11.76	0	0	0
长轴螺 Peraclis reticulata	0	0	0	0.06±0.06	0.01	5.88
蝴蝶螺 Desmopterus papilio	0	0	0	3.3±2.09	0.77	58.82

种类 Species	冬季 Winter			夏季 Summer
种类 Species	平均丰度 Abundance	相对丰度 RA	出现率 OR	平均丰度 Abundance	相对丰度 RA	出现率 OR
马蹄螔螺 Limacina trochiformis	0.44±0.2	1.22	35.29	35.92±19.9	8.42	76.47
泡螔螺 L. bulimoides	1.37±0.55	3.85	35.29	0.39±0.23	0.09	17.65
胖螔螺 L. inflata	25.73±11.1	72.24	52.94	5.62±3.05	1.32	47.06
螔螺属 Limacina sp.	0.05±0.05	0.14	5.88	0	0	0
强卷螺 Agadina stimpsoni	1.32±0.73	3.7	35.29	0.13±0.1	0.03	11.76
强卷螺属 Agadina sp.	0.04±0.04	0.12	5.88	0.32±0.12	0.08	35.29
芽笔帽螺 Creseis virgula	0.69±0.55	1.95	23.53	0.09±0.05	0.02	17.65
锥笔帽螺 C.virgula var. conica	0.64±0.43	1.8	17.65	2.65±1.61	0.62	23.53
尖笔帽螺 C. acicula	2.6±1.57	7.3	35.29	111.16±91.41	26.06	41.18
棒笔帽螺 C. clava	1.69±1.11	4.74	23.53	266.42±259.33	62.46	70.59
帽螺属 Creseis sp.	0.09±0.06	0.26	11.76	0.2±0.14	0.05	11.76
锥棒螺 Styliola subula	0.7±0.4	1.97	29.41	0	0	0
棒螺属 Styliola sp.	0	0	0	0.07±0.07	0.02	5.88
蛆状螺 Cuvierina columnella	0	0	0	0.03±0.03	0.01	5.88
尖菱蝶螺 Clio pyramidata	0.02±0.02	0.06	5.88	0	0	0
三齿驼蝶螺 Cavolinia tridentata	0.05±0.03	0.13	11.76	0	0	0
长吻龟螺 C. longirostris	0	0	0	0.03±0.03	0.01	5.88
角长吻龟螺 C. longirostris var. angulata	0	0	0	0.1±0.1	0.02	5.88
球龟螺 C. globulosa	0.14±0.1	0.39	11.76	0.03±0.03	0.01	5.88
宽弯龟螺 C. labiata	0.04±0.03	0.11	11.76	0	0	0
长轴螺 Peraclis reticulata	0	0	0	0.06±0.06	0.01	5.88
蝴蝶螺 Desmopterus papilio	0	0	0	3.3±2.09	0.77	58.82