The Diversity Research Of Plankton In Two Rivers In Fuzhou

Drowning (drowning commonly known) is a liquid blockage of the tractand respiratory alve-olar gas exchange hindered, so that in vivo hypoxia, elevated concentrations of carbon dioxide to asphyxia death.Because of large number of rivers in our countey,so that has also become one of the main reasons forthe high incidence of drowning events.Most of the bodies found is an accede--nt in the rivers lakes and seas. but drowning isone of the means of suicide.And a few case of ho--micide, even after the death of the dead bodies into the water camouflage drowning. Therefore, we found bodyis in the water that may be to dowith hominide case,So the forensic examination identified the nature of his death is very necessary.Fuzhou is located in the southeast coastal rivers in the distribution of many, so every year drowning cases, forensic detection for plankton are the main indicators ofdiagnosis of drowning. This study provide important data for forensic drowning identification by segmentation research plankton populationsclassification in the Baima River and Jinan river water.This study in December2010and June2011, Jinan river in different seasons of plankton populations, species and distribution of the survey, the establishment ofplankton18S rDNA library and Jinan river winter104and summer168different types of digestion eukaryotic plankto-n clones were sequenced, most closely related toknown species of the18S rDNA sequences from NCBI and MEGA4.0program using the NJ method to construct the plankton phylogenetic tree.Jinan river plankton phylogenetic tree in winter is mainly divided into:Chrysophyta,Bacillario-phyceae, Chlorophyta and protozoa.Summer plankton populations are divided into:Chlorophyta, Chrysophyta, Cryptophyta, Ciliophora, Fungi and Metazoa. Jinan River in different seasons of plankton composition of a change in the proportionof winter water samples golden algae and diatoms for more than80%, so these twoeukaryotic algae as the dominant species, while green algae andThe protozoan less.Summer compared to Cryptomonas sp, algae, protozoa and ciliated sub-categories of eukaryotic plankton in four categories each accounted for approximately20%ofthe total for the summer waters of the dominant species, while the golden algae and fungi only to the total into initial clear Jinan River winter and summer seasonsplankton population diversity there are some differences. Animal drowning death ofexperimental verification, the importance of plankton detection of forensic drowningdeath diagnosis.