Scallop culture is an important way of bottom-seeding marine ranching,which is of great significance to improve the current situation of fishery resources.However,there are some problems in site-selection evaluation o...Scallop culture is an important way of bottom-seeding marine ranching,which is of great significance to improve the current situation of fishery resources.However,there are some problems in site-selection evaluation of marine ranching,such as imperfect criteria system,complex structure,untargeted criteria quantification,etc.In addition,no site-selection evaluation method of bottom-seeding culture areas for scallops is available.Therefore,we established a hierarchy structure model according to the analytic hierarchy process(AHP)theory,in which social,physical,chemical,and biological environments are used as main criteria,and marine functional zonation,water depth,current,water temperature,salinity,substrate type,water quality,sediment quality,red tide,phytoplankton,and zooplankton are used as sub-criteria,on which a multi-parameter evaluation system is set up.Meanwhile,the dualism method,assignment method,and membership function method were used to quantify sub-criteria,and a quantitative evaluation for the entire criteria was added,including the evaluation and analysis of two types of unsuitable environmental situations.By overall consideration in scallop yield,quality,and marine ranching construction objectives,the weight of the main criteria could be determined.Five grades in the suitability corresponding to the evaluation result were divided,and the Python language was used to create an evaluation system for efficient calculation and intuitive presentation of the evaluation outcome.Eight marine cases were simulated based on existing survey data,and the results prove that the method is feasible for evaluating and analyzing the site selection of bottom-seeding culture areas for scallops under various environmental situations.The proposed evaluation method can be promoted for the site selection of bottom-seeding marine ranching.This study provided theoretical and methodological references for the site selection evaluation of other types of marine ranching.展开更多
The AFLP （amplified fragrnent length polymorphism）technique was used to analyse the genetic diversity in four scallop species, Patinopecten yessoensis, A rgopecten irradians, Chlamys nobilis and C. farreri. The gene...The AFLP （amplified fragrnent length polymorphism）technique was used to analyse the genetic diversity in four scallop species, Patinopecten yessoensis, A rgopecten irradians, Chlamys nobilis and C. farreri. The genetic similarity indexes of these four species are 0.8415, 0.7863, 0.7190 and 0.6731, while Shannon diversity indexes are 43.52, 58.87, 80.16 and 92.83, respectively. As analyzed, the genetic diversities in two native species, i.e., C, farreri and C. nobilis, are higher than those in other two introduced species, A. irradians and P. yessoensis. The results also showed that C. nobilis and C, farreri shared the most common loci. The genetic distance indicated that C. nobilis and C. farreri are closely related. Moreover, out of 510 AFLP markers, 21 specific bands are found to distinguish the four species scallops and these markers may be applied to the specific germplasm characterization and molecular assistant classification in scallops.展开更多
以海湾扇贝柱为原料,研究了热风温度、风速对其干燥速率的影响,并进一步采用非线性回归分析比较Newton、Page、Henderson and Pabis、Logarilunic和Wang and Singh 5种薄层干燥模型的拟合程度,确定扇贝柱热风干燥最适干燥模型,求得模型...以海湾扇贝柱为原料,研究了热风温度、风速对其干燥速率的影响,并进一步采用非线性回归分析比较Newton、Page、Henderson and Pabis、Logarilunic和Wang and Singh 5种薄层干燥模型的拟合程度,确定扇贝柱热风干燥最适干燥模型,求得模型表达式。结果表明,扇贝柱热风干燥是一个降速干燥过程,提高热风温度和风速可以显著缩短干燥时间,但是干燥强度过大会使干制品品质下降。因此,综合考虑干燥效率和干制品品质,在试验条件下,选择热风温度55℃、风速1.0 m/s为扇贝柱较适宜的干燥条件,试验条件下Logarithmic模型拟合度最高,可以用来预测海湾扇贝柱热风干燥过程中的含水率,模型表达式为MR=0.9920exp(-(-0.00028T2-0.08666T+0.23677U2-6.52129U+0.10584TU+6.54635)t)+0.0067。展开更多
基金Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB 42010203)the National Natural Science Foundation of China(No.42176090)。
文摘Scallop culture is an important way of bottom-seeding marine ranching,which is of great significance to improve the current situation of fishery resources.However,there are some problems in site-selection evaluation of marine ranching,such as imperfect criteria system,complex structure,untargeted criteria quantification,etc.In addition,no site-selection evaluation method of bottom-seeding culture areas for scallops is available.Therefore,we established a hierarchy structure model according to the analytic hierarchy process(AHP)theory,in which social,physical,chemical,and biological environments are used as main criteria,and marine functional zonation,water depth,current,water temperature,salinity,substrate type,water quality,sediment quality,red tide,phytoplankton,and zooplankton are used as sub-criteria,on which a multi-parameter evaluation system is set up.Meanwhile,the dualism method,assignment method,and membership function method were used to quantify sub-criteria,and a quantitative evaluation for the entire criteria was added,including the evaluation and analysis of two types of unsuitable environmental situations.By overall consideration in scallop yield,quality,and marine ranching construction objectives,the weight of the main criteria could be determined.Five grades in the suitability corresponding to the evaluation result were divided,and the Python language was used to create an evaluation system for efficient calculation and intuitive presentation of the evaluation outcome.Eight marine cases were simulated based on existing survey data,and the results prove that the method is feasible for evaluating and analyzing the site selection of bottom-seeding culture areas for scallops under various environmental situations.The proposed evaluation method can be promoted for the site selection of bottom-seeding marine ranching.This study provided theoretical and methodological references for the site selection evaluation of other types of marine ranching.
基金This work was financially supported by the National High-tech“863”Project of China under contract Nos 2003AA603022 and 2002AA6210the Shandong Excellent Middle-age and Young Scientist Foundation Project under contract No.01BS10)
文摘The AFLP （amplified fragrnent length polymorphism）technique was used to analyse the genetic diversity in four scallop species, Patinopecten yessoensis, A rgopecten irradians, Chlamys nobilis and C. farreri. The genetic similarity indexes of these four species are 0.8415, 0.7863, 0.7190 and 0.6731, while Shannon diversity indexes are 43.52, 58.87, 80.16 and 92.83, respectively. As analyzed, the genetic diversities in two native species, i.e., C, farreri and C. nobilis, are higher than those in other two introduced species, A. irradians and P. yessoensis. The results also showed that C. nobilis and C, farreri shared the most common loci. The genetic distance indicated that C. nobilis and C. farreri are closely related. Moreover, out of 510 AFLP markers, 21 specific bands are found to distinguish the four species scallops and these markers may be applied to the specific germplasm characterization and molecular assistant classification in scallops.
文摘以海湾扇贝柱为原料,研究了热风温度、风速对其干燥速率的影响,并进一步采用非线性回归分析比较Newton、Page、Henderson and Pabis、Logarilunic和Wang and Singh 5种薄层干燥模型的拟合程度,确定扇贝柱热风干燥最适干燥模型,求得模型表达式。结果表明,扇贝柱热风干燥是一个降速干燥过程,提高热风温度和风速可以显著缩短干燥时间,但是干燥强度过大会使干制品品质下降。因此,综合考虑干燥效率和干制品品质,在试验条件下,选择热风温度55℃、风速1.0 m/s为扇贝柱较适宜的干燥条件,试验条件下Logarithmic模型拟合度最高,可以用来预测海湾扇贝柱热风干燥过程中的含水率,模型表达式为MR=0.9920exp(-(-0.00028T2-0.08666T+0.23677U2-6.52129U+0.10584TU+6.54635)t)+0.0067。
