南海西北部陆架区住筒虫属的种类描述及其丰度分布

李开枝; 尹健强; 黄良民; 陈清潮; 林强

南海西北部陆架区住筒虫属的种类描述及其丰度分布

1.
中国科学院南海海洋研究所海洋生物资源可持续利用重点实验室, 广东广州 510301; 国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室, 浙江杭州 310012
2.
中国科学院南海海洋研究所海洋生物资源可持续利用重点实验室, 广东广州 510301

基金项目: 中国近海海洋综合调查与评价专项(908-01-ST08);中科院知识创新工程项目(KZCX2-YW-Q07;KZCX2-YW-213;SQ200704);NSFC-GD联合基金重点项目(U0633007);广东省海洋渔业资源综合评价(GD908-02-05)。

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- 收稿日期: 2010-02-27

Taxonomic identification and abundance distribution of fritillarians in the northwest continental shelf of South China Sea

1.
Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanograpy, State O
2.
Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

摘要

摘要: 住筒虫是浮游被囊动物的一类,隶属于脊索动物门、尾索动物亚门、有尾纲、住筒虫科、住筒虫属,在海洋生物食物链中占重要位置。根据南海西北部陆架区2006年夏季、冬季和2007年春季3个航次各82个站的浮游动物拖网(网目孔径169 μm)调查资料,共鉴定到8种住筒虫:Fritillaria aberrens,F.abjornseni, F.formica, F.haplostoma, F.megachile, F.pacifica, F.pellucida, F.tenella,其中F.aberrens、F.abjornseni和F.pacifica为南海新纪录。对它们进行了形态描述,并结合环境因子探讨其丰度分布特征。夏季出现住筒虫8种,平均丰度为(2.62±4.68 )个/m³;冬季3种,春季4种,平均丰度分别为(0.23±0.52)和(1.72±5.43)个/m³。F.formica是丰度最高的一种,在夏季、冬季和春季分别占总丰度的43.88%,80.18%和84.29%;其次是F.pellucida和F.haplostoma;以上三种分布广,丰度较高。与环境因子分析表明,夏季琼东沿岸上升流和雷州半岛东部海域冷涡现象对种类向沿岸推移及其丰度增加有一定的助长作用。
- 有尾纲 /
- 住筒虫属 /
- 种类 /
- 丰度 /
- 南海
Abstract: Fritillarians, known as an important group of tunicates, played a crucial role in marine food web.A total of 8 species of fritillarians were collected (Fritillaria aberrens, F.abjornseni, F.formica, F.haplostoma, F.megachile, F.pacifica, F.pellucida, F.tenella) based on the data obtained from three cruises carried out in the summer and winter of 2006 and the spring of 2007 using planktonic net (mesh size: 169 μm).Fritillaria aberrens, F.abjornseni and F.pacifica were first records for waters of the South China Sea.7, 3 and 4 species occurred in summer, winter and spring and their abundance were(2.62±4.68),(0.23±0.52) and(1.72±5.43) ind/m³, respectively.The most frequent and abundant species was F.formica, accounting for 43.88%, 80.18% and 84.29% of total abundance in summer, winter and spring, followed by F.pellucida and F.haplostoma.Coastal upwelling and cyclonic circulation might push the fritillarians into coastal waters and enhanced their abundance.
- Appendicularia /
- Fritillariidae /
- taxonomy /
- abundance /
- South China Sea

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