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“有序样品的Fisher聚类”对中华绒螯蟹渔获物的分析 被引量:1
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作者 王宇庭 高天翔 +2 位作者 史为良 郑有刚 赵睿 《中国海洋大学学报(自然科学版)》 CAS CSCD 北大核心 2005年第2期297-300,共4页
为探讨河蟹生长特点以及渔获物与放养规格的关系 ,用有序样品的Fish聚类分析法首次对中华绒螯蟹的渔获物组成进行分析。结果显示 ,黄河三角洲广南水库沉砂池 2 0 0 0年河蟹渔获物可以分为 3个群体 ,与其放养的 3个不同规格群体相对应 ;... 为探讨河蟹生长特点以及渔获物与放养规格的关系 ,用有序样品的Fish聚类分析法首次对中华绒螯蟹的渔获物组成进行分析。结果显示 ,黄河三角洲广南水库沉砂池 2 0 0 0年河蟹渔获物可以分为 3个群体 ,与其放养的 3个不同规格群体相对应 ;据此推算了不同放养规格的回捕率 ;并对雌、雄生长和性成熟的差异以及合理的放养规格进行了探讨。 展开更多
关键词 中华(河蟹) 渔获物 聚类分析 放养规格 回捕率
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THE EFFECTS OF ACUTE PROGRESSIVEHYPOXIA ON THE RESPIRATIONRATE OF THE CHINESE CRABEriocheir sinensis 被引量:5
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作者 邹恩民 堵南山 赖伟 《Zoological Research》 CAS CSCD 1993年第4期327-334,共8页
The effects of acute progressive hypoxia on the respiration rate of the Chinese freshwater crab, Eriocheir sinensis, acclimated at three temperatures were investigated with a closed respiromet er. E. sinensis can main... The effects of acute progressive hypoxia on the respiration rate of the Chinese freshwater crab, Eriocheir sinensis, acclimated at three temperatures were investigated with a closed respiromet er. E. sinensis can maintain its respiration rate down to the critical point (Pc) and from this point its respiration rate declines rapidly, reaching zero at a lower ambient oxygen concentration called the zero respiration oxygen concentration. Because of this, a new hyperbolic equation is introduced to express the relationship between respiration rate and ambient oxygen concentration. A new method for calculating the PC value is also developed. The PC values for E. sinensis at 20-35℃ range from 1.92-3.47 mg/1. 展开更多
关键词 Eriocheir sinensis. Progressive hypoxia Respiration rate
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Water quality, nutrient budget, and pollutant loads in Chinese mitten crab (Eriocheir sinensis) farms around East Taihu Lake 被引量:11
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作者 蔡春芳 谷孝鸿 +3 位作者 黄鹤忠 戴修赢 叶元土 施陈江 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2012年第1期29-36,共8页
To understand the factors causing frequent outbreaks of harmful algae blooms in the Taihu Lake, China, we studied water quality and nutrient budget in Chinese mitten crab (Eriocheir sinensis) farm ponds in the eastern... To understand the factors causing frequent outbreaks of harmful algae blooms in the Taihu Lake, China, we studied water quality and nutrient budget in Chinese mitten crab (Eriocheir sinensis) farm ponds in the eastern part of the lake from November 2007 to December 2009. We estimated the nitrogen (N), phosphorus (P), and chemical oxygen demand (COD) loads. Materials input and output ponds, water exchange, and applied management practices of 838.5-hm2 crab ponds were surveyed using questionnaires. Water quality of 12 ponds, which were located no more than 2 km from East Taihu Lake, were monitored. The results show that water quality in the crab ponds was better than reference data. Feeds, including corn seed, commercial feed, trash fish, and gastropod, were the major sources of N and P input in the crab ponds, contributing 88.7% and 94.9%, respectively. In total, 60.5% of N and 37.3% of P were sequestered by macrophytes, and only 15.7% and 8.5% of them were discharged as effluent. The net loads of N and P in effluent were 16.43 kg/hm2/cycle and 2.16 kg/hm2/cycle, respectively, while the COD load was -17.88 kg/hm2/cycle. This indicated that crab farming caused minor negative impact on the trophic status of the lake area, which was attenuated by macrophytes. However, wastewater purification is still necessary in crab faming. 展开更多
关键词 Chinese mitten crab (Eriocheir sinensis) water quality mass budget pollutant load Taihu Lake
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Culture of Eriocheir sinensis Larvae in Ponds in Greenhouse
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作者 Guoliang RUAN Liangcheng HU +2 位作者 Hai ZHOU Dawen MA Yabin TANG 《Agricultural Science & Technology》 CAS 2016年第3期672-673,683,共3页
A total of 15 pools were selected from a greenhouse, and they were randomly and evenly divided into three groups.In each group, one stocking density of Eriocheir sinensis was arranged. The results showed that after 45... A total of 15 pools were selected from a greenhouse, and they were randomly and evenly divided into three groups.In each group, one stocking density of Eriocheir sinensis was arranged. The results showed that after 45-d culture, the crab number per kilogram reached about 300 with survival rate of about 20%; the initial stocking density had significantly effect on the body size of E. sinensis on sell, instead on the survival rate of E. sinensis larvae. Therefore, it is feasible to conduct the culture of E. sinensis larvae in a pool in greenhouse. 展开更多
关键词 Eriocheir sinensis Pool in greenhouse Larvae culture Stocking density
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