This study showed Iethal concentrations (LC) of copper for Peneaus penicillatus at various stages ofits Iife cycle were 1000μg/L for nauplii, 1000μg/L for Zoea I, 2000μg/L for Zoea Il, 2500μg/Lfor Zoea III, 3000μ...This study showed Iethal concentrations (LC) of copper for Peneaus penicillatus at various stages ofits Iife cycle were 1000μg/L for nauplii, 1000μg/L for Zoea I, 2000μg/L for Zoea Il, 2500μg/Lfor Zoea III, 3000μg/L for Mysis I, II and III and that for almost 100% mortality for postlarvae was3000μg/L. For cadmium LC were 100μg/L for nauplii, 500μg/L for Zoea l, 1000μg/L forZoea II, 2000μg/L for Zoea III, 2500μg/L for Mysis I and 3500μg/L for Mysis II, III andpostlarvae. For tmixture of both metals, LC were 400μg/L for nauplii, 1000 μg/L for nauplii, 1000μg/L for Zoea I,2000μg/L for Zoea II and 3000μg/L for Mysis I, II, III and post larvae.展开更多
We report for the first time the presence of local populations of the starfish Odontaster penicillatus in the regions of Atacama and Antofagasta,Chile.This finding indicates an extension of the distribution limit of 5...We report for the first time the presence of local populations of the starfish Odontaster penicillatus in the regions of Atacama and Antofagasta,Chile.This finding indicates an extension of the distribution limit of 500 km with respect to the last observation made in 2007 in Isla Grande de Atacama.A total of 121 specimens of O.penicillatus were recorded at depths of between 8 m and 24 m.They were associated with rocky substrate and with different species of barnacles,sponges and bryozoans.The presence of O.penicillatus expands the knowledge of the benthic biodiversity of the region,and the development of studies on its ecological importance will be promoted.展开更多
Fenneropenaeus penicillatus is an endangered species in China due to overfishing and damage to or loss of habitat. In this study, 41 new microsatellite markers were developed by using the FIASCO protocol with subseque...Fenneropenaeus penicillatus is an endangered species in China due to overfishing and damage to or loss of habitat. In this study, 41 new microsatellite markers were developed by using the FIASCO protocol with subsequent analysis on 30 wild individuals from Ningde, China. Our analysis shows that 35 loci were polymorphic and six loci were monomorphic. For the 35 polymorphic loci, the number of alleles ranged from 2 to 7, with an average of 3.657 1. The polymorphism information content ranged from 0.121 to 0.794. The observed heterozygosity rate ranged from 0.000 0 to 0.888 9, and expected heterozygosity ranged from 0.111 1 to 0.812 9. However, 12 loci did not conform to Hardy-Weinberg equilibrium after Bonferroni correction. This is the first time the genetic diversity of F. penicillatus has been explored in Ningde. This group is at a low level of genetic diversity; therefore further measures should be taken to protect this species. Furthermore, these new microsatellite markers will be useful for the future conservation of F. penicillatus.展开更多
文摘This study showed Iethal concentrations (LC) of copper for Peneaus penicillatus at various stages ofits Iife cycle were 1000μg/L for nauplii, 1000μg/L for Zoea I, 2000μg/L for Zoea Il, 2500μg/Lfor Zoea III, 3000μg/L for Mysis I, II and III and that for almost 100% mortality for postlarvae was3000μg/L. For cadmium LC were 100μg/L for nauplii, 500μg/L for Zoea l, 1000μg/L forZoea II, 2000μg/L for Zoea III, 2500μg/L for Mysis I and 3500μg/L for Mysis II, III andpostlarvae. For tmixture of both metals, LC were 400μg/L for nauplii, 1000 μg/L for nauplii, 1000μg/L for Zoea I,2000μg/L for Zoea II and 3000μg/L for Mysis I, II, III and post larvae.
文摘We report for the first time the presence of local populations of the starfish Odontaster penicillatus in the regions of Atacama and Antofagasta,Chile.This finding indicates an extension of the distribution limit of 500 km with respect to the last observation made in 2007 in Isla Grande de Atacama.A total of 121 specimens of O.penicillatus were recorded at depths of between 8 m and 24 m.They were associated with rocky substrate and with different species of barnacles,sponges and bryozoans.The presence of O.penicillatus expands the knowledge of the benthic biodiversity of the region,and the development of studies on its ecological importance will be promoted.
基金Funded by the National Natural Science Foundation of China(No.31272668)the Natural Science Foundation of Fujian Province,China(No.2010J01213)+2 种基金the Program of Fujian Provincial Department of Science and Technology(No.JK2010034)the Program for New Century Excellent Talents in Fujian Province Universitiesthe Foundation for Innovative Research Team of Jimei University,China(No.2010A004)
文摘Fenneropenaeus penicillatus is an endangered species in China due to overfishing and damage to or loss of habitat. In this study, 41 new microsatellite markers were developed by using the FIASCO protocol with subsequent analysis on 30 wild individuals from Ningde, China. Our analysis shows that 35 loci were polymorphic and six loci were monomorphic. For the 35 polymorphic loci, the number of alleles ranged from 2 to 7, with an average of 3.657 1. The polymorphism information content ranged from 0.121 to 0.794. The observed heterozygosity rate ranged from 0.000 0 to 0.888 9, and expected heterozygosity ranged from 0.111 1 to 0.812 9. However, 12 loci did not conform to Hardy-Weinberg equilibrium after Bonferroni correction. This is the first time the genetic diversity of F. penicillatus has been explored in Ningde. This group is at a low level of genetic diversity; therefore further measures should be taken to protect this species. Furthermore, these new microsatellite markers will be useful for the future conservation of F. penicillatus.
