摘要
The northern sea area of the South China Sea is situated between 107.5°～122.5°East longitude and 17°～25° North latitude with high temperature and a large quantity of rainfall which belongs to the oceanic climate of the torrid zone and subtropical zone. From September, 1994 to June, 1998,during the research on the species of Horseshoe crab within the scope between the south from North gulf and the north to Xiamen, choosing Xiamen, Shantou, Wuchuan, Donghaidao and Qishui as fixed positions and irregularly going to Xuwen and Suixi in Guangdong province and Fangcheng in Guangxi province, we found that there was only Tachypleus tridentatus in the northern sea area of the South China Sea and the sea area from Wuchuan to Xiamen, and found that there were two species of horseshoe crab which were Tachypleus tridentatus and Carcinoscorpius rotundicauda in the southern area to East Sea Island, referring to East Sea Island, Qishui, Xuwen, Suixi and Fangcheng, most of which were Tachypleus tridentatus, and found a great number of larvae of Tachypleus tridentatus including zooids with different sizes from 7cm bodily length to mature. In Minan we found not only big colonies of adult Carcinoscorpius rotundicauda , but also a great number of larvae of Carcinoscorpius rotundicauda with different body size from 7cm body length to maturity. All these show that the northern sea area of the South China Sea is the area where both Tachypleus tridentatus and Carcinoscorpius rotundicauda distribute and reproduce. On January 1st, 1998 at the town of Qishui in Leizhou, we found an adult male Horseshoe crab and majority of its eggs was immature, while the eggs with above 4mm diameters were only 0.87 percent but the eggs with below 1.0mm diameter was 58 percent(1 160 pills). It shows that Qishui is a place where Tachyplers tridentatus survive in the winter.
The northern sea area of the South China Sea is situated between 107.5°～122.5°East longitude and 17°～25° North latitude with high temperature and a large quantity of rainfall which belongs to the oceanic climate of the torrid zone and subtropical zone. From September, 1994 to June, 1998,during the research on the species of Horseshoe crab within the scope between the south from North gulf and the north to Xiamen, choosing Xiamen, Shantou, Wuchuan, Donghaidao and Qishui as fixed positions and irregularly going to Xuwen and Suixi in Guangdong province and Fangcheng in Guangxi province, we found that there was only Tachypleus tridentatus in the northern sea area of the South China Sea and the sea area from Wuchuan to Xiamen, and found that there were two species of horseshoe crab which were Tachypleus tridentatus and Carcinoscorpius rotundicauda in the southern area to East Sea Island, referring to East Sea Island, Qishui, Xuwen, Suixi and Fangcheng, most of which were Tachypleus tridentatus, and found a great number of larvae of Tachypleus tridentatus including zooids with different sizes from 7cm bodily length to mature. In Minan we found not only big colonies of adult Carcinoscorpius rotundicauda , but also a great number of larvae of Carcinoscorpius rotundicauda with different body size from 7cm body length to maturity. All these show that the northern sea area of the South China Sea is the area where both Tachypleus tridentatus and Carcinoscorpius rotundicauda distribute and reproduce. On January 1st, 1998 at the town of Qishui in Leizhou, we found an adult male Horseshoe crab and majority of its eggs was immature, while the eggs with above 4mm diameters were only 0.87 percent but the eggs with below 1.0mm diameter was 58 percent(1 160 pills). It shows that Qishui is a place where Tachyplers tridentatus survive in the winter.
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2001年第1期108-111,共4页
ACTA ZOOLOGICA SINICA
基金
国家自然科学基金!资助项目 (No . 38970 42 0 )
广东省高教厅 1997年重点课题!资助项目 (No . 975 7)
厦门市海洋科技计划资助!项目
关键词
鲎
中国鲎
圆尾鲎
种类
分布
中国南海
肢口纲
剑尾目
Horseshoe crab, Tachypleus tridentatus, Carcinoscorpius rotundicauda, Species, Distribution, The South China Sea
