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珠江口香港海域底拖网贝类资源研究
佘书生, 孙 颉
中港生态顾问公司
摘要:
珠江口海域是香港和广东的主要渔场之一, 但有关该水域贝类资源的研究并不完善, 本文可以为该海区调查位置的贝类资源现状提供参考, 对完善该海区贝类的基础研究提供依据。作者于2016年2月和8月, 对珠江口香港海域贝类资源进行了底拖调查, 所采集软体动物隶属3纲、16目、26科, 33属; 2月份(枯水期)和8月份(丰水期)分别采集到贝类28种和39种。枯水期优势种为棒锥螺Turritella terebra、浅缝骨螺Murex trapa及波纹巴非蛤Paphia undulata, 约占总个体数的86.9%; 丰水期优势种是棒锥螺Turritella terebra、浅缝骨螺Murex trapa和牡蛎Ostrea sp., 约占总个体数的85.3%。多样性指数范围为0.9179~1.064。调查发现, 8月份贝类的物种数量和生物量明显多于2月份, 棒椎螺为该水域明显的优势种。
关键词:  珠江口  底拖网调查  贝类
DOI:10.11759/hykx20170714002
分类号:
基金项目:
Bottom trawl survey on molluscs resources of the Pearl River Estuary near Hong Kong waters
SHE Shu-sheng, SUN Jie
Abstract:
The Pearl River Estuary is one of the major fishing waters in Hong Kong and Guangdong. However, the researches on shellfish resources in this area are not perfect. This article can provide a reference of shellfish resources in the survey area and a basis for the improvement of the basic research on shellfish in this area. The shellfish resources survey of the Pearl River Estuary near Hong Kong was carried out in February and August 2016. The results show that the shellfish species in this area included 3 classes, 16 orders, 26 families and 33 genus; 28 and 39 species were recorded in dry season (Feb) and wet season (Aug), respectively. The catch per unit effort (CPUE) and yield per unit effort (YPUE) in wet season are obviously larger than that in dry season. The dominant species are Turritella terebra, Murex trapa, and Paphia undulate in dry season with 85.3% of the total number; in wet season they are Turritella terebra, Murex trap, and Ostrea sp. accounting for 86.9%. The diversity index ranges from 0.9179 to 1.064. The number of species and biomass of shellfish was significantly higher in August than that of February, and Turritella terebra is obviously dominant in this area.
Key words:  the Pearl River Estuary  bottom trawl survey  shellfish
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