The feeding habits of 500 specimens ofBoops boops （family： Sparidae）, inhabiting Benghazi Mediterranean coast, were studied monthly from November 2012 to October 2013. The annual diet composition, monthly variation...The feeding habits of 500 specimens ofBoops boops （family： Sparidae）, inhabiting Benghazi Mediterranean coast, were studied monthly from November 2012 to October 2013. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Boops hoops feed on a wide variety of prey types： Crustacean （49.0%）, Porifera （22.7%）, Coelenterate （10.2%）, Seagrasses （9.2%）, Mollusca （8.1%） and Protozoa （0.9%）. The Crustacean, Porifera, Coelenterate, Seagrasses and Mollusca were the major food item all year round and it was found in all length groups. In the present study, Crustacean, Porifera, Seagrasses and Mollusca increased as the size increased while Coelenterate and Protozoa decreased as the fish size increased. The feeding intensity was quite high during the autumn and summer.展开更多
Developing circular economy is the inevitable choice to realize regional sustainable development.And innovation is the fundamental driving force for regional sustainable development.Therefore,the combination of circul...Developing circular economy is the inevitable choice to realize regional sustainable development.And innovation is the fundamental driving force for regional sustainable development.Therefore,the combination of circular economy and regional innovation systems is of great value in the study of regional circular innovation systems.Based on the concepts and basic characteristics of the regional circular innovation system,the author takes Beijing,Shanghai,and Jiangsu as examples,which are the circular economy pilot provinces in developed region of eastern coastal China.With outstanding circular economy and innovation achievements,Beijing Economic-Technological Development Area,Shanghai Caohejing Hi-Tech Park,and Suzhou Industrial Park(the National Eco-Industrial Demonstration Park),served to summarize the characteristics,formation mechanism and inspiration of the circular innovation system model in capital economic-technological development zones(characterized by innovation in the recycling of water and land resources and energy,and innovation in circular service industries supplemented with"Internet+Wisdom Park"),coastal new&hi-tech industrial development zones,(featured by innovation in the recycling of water and land resources and energy,in addition,the companies’management and export processing cooperate with government)and hi-tech industrial parks(marked by open innovation and Sino-foreign governments cooperate in construction and management).This paper mainly focuses on the concepts and characteristics,formation mechanisms,evaluations,structure laws,the optimizing strategies and the cases in China to study the progress of regional green innovation system.展开更多
The feeding habits of 500 specimens of Pagrus pagrus （family： Sparidae）, inhabiting Benghazi Mediterranean Coast, were studied monthly from January to December 2008. The annual diet composition, monthly variations ...The feeding habits of 500 specimens of Pagrus pagrus （family： Sparidae）, inhabiting Benghazi Mediterranean Coast, were studied monthly from January to December 2008. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Pagruspagrus feed on a wide variety of prey types： crustaceans （38.3%）, molluscs （13.2 %）, echinoderms （11.4%）, polychaetes （10.7%）, digestive food （10.3%）, fish parts （7.1%）, seagrasses （6.4%） and sediments （2.7%）. The crustacean was the major food item all year round and it was found in all length groups. In the present study crustaceans, polycheates, seagrasses and sediments decreased as the size increased while molluscs, echinoderms, digestive food and fish parts increased as the fish size increased. The feeding intensity was quite high during the summer and early autumn.展开更多
The feeding habits of 140 specimens of Carcharhinus brachyurus （Fam. Carcharhinidae） inhabiting Ain-EI-Ghazala lagoon on the Mediterranean Sea, eastern Libya were studied monthly from February to June 2013. The annu...The feeding habits of 140 specimens of Carcharhinus brachyurus （Fam. Carcharhinidae） inhabiting Ain-EI-Ghazala lagoon on the Mediterranean Sea, eastern Libya were studied monthly from February to June 2013. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Carcharhinus brachyurus feed on a wide variety of prey types： Pelagic bony fishes （54.5%）, benthic bony fishes （36.4%）, Cephalopods （6.8%）, Cartilaginous fishes （1.7%） and Fish parts （0.6%）. The Pelagic bony fishes and benthic bony fishes were the major food items during the study period in question, and they were found in all length groups. According to the results that were gleamed from this study, when the size of the sharks increased, the proportion of pelagic bony fishes within the sharks＇ stomachs grew in size, while the benthic bony fishes and Cephalopods decreased in size. The feeding intensity was quite high during the winter, spring and summer, this study is the first to study the Elasmobranchs in Libya, and it will be good base to study another species, specifically.展开更多
文摘The feeding habits of 500 specimens ofBoops boops （family： Sparidae）, inhabiting Benghazi Mediterranean coast, were studied monthly from November 2012 to October 2013. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Boops hoops feed on a wide variety of prey types： Crustacean （49.0%）, Porifera （22.7%）, Coelenterate （10.2%）, Seagrasses （9.2%）, Mollusca （8.1%） and Protozoa （0.9%）. The Crustacean, Porifera, Coelenterate, Seagrasses and Mollusca were the major food item all year round and it was found in all length groups. In the present study, Crustacean, Porifera, Seagrasses and Mollusca increased as the size increased while Coelenterate and Protozoa decreased as the fish size increased. The feeding intensity was quite high during the autumn and summer.
文摘Developing circular economy is the inevitable choice to realize regional sustainable development.And innovation is the fundamental driving force for regional sustainable development.Therefore,the combination of circular economy and regional innovation systems is of great value in the study of regional circular innovation systems.Based on the concepts and basic characteristics of the regional circular innovation system,the author takes Beijing,Shanghai,and Jiangsu as examples,which are the circular economy pilot provinces in developed region of eastern coastal China.With outstanding circular economy and innovation achievements,Beijing Economic-Technological Development Area,Shanghai Caohejing Hi-Tech Park,and Suzhou Industrial Park(the National Eco-Industrial Demonstration Park),served to summarize the characteristics,formation mechanism and inspiration of the circular innovation system model in capital economic-technological development zones(characterized by innovation in the recycling of water and land resources and energy,and innovation in circular service industries supplemented with"Internet+Wisdom Park"),coastal new&hi-tech industrial development zones,(featured by innovation in the recycling of water and land resources and energy,in addition,the companies’management and export processing cooperate with government)and hi-tech industrial parks(marked by open innovation and Sino-foreign governments cooperate in construction and management).This paper mainly focuses on the concepts and characteristics,formation mechanisms,evaluations,structure laws,the optimizing strategies and the cases in China to study the progress of regional green innovation system.
文摘The feeding habits of 500 specimens of Pagrus pagrus （family： Sparidae）, inhabiting Benghazi Mediterranean Coast, were studied monthly from January to December 2008. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Pagruspagrus feed on a wide variety of prey types： crustaceans （38.3%）, molluscs （13.2 %）, echinoderms （11.4%）, polychaetes （10.7%）, digestive food （10.3%）, fish parts （7.1%）, seagrasses （6.4%） and sediments （2.7%）. The crustacean was the major food item all year round and it was found in all length groups. In the present study crustaceans, polycheates, seagrasses and sediments decreased as the size increased while molluscs, echinoderms, digestive food and fish parts increased as the fish size increased. The feeding intensity was quite high during the summer and early autumn.
文摘The feeding habits of 140 specimens of Carcharhinus brachyurus （Fam. Carcharhinidae） inhabiting Ain-EI-Ghazala lagoon on the Mediterranean Sea, eastern Libya were studied monthly from February to June 2013. The annual diet composition, monthly variations in the diet composition, the variations of diet with length and the intensity of feeding were studied. Carcharhinus brachyurus feed on a wide variety of prey types： Pelagic bony fishes （54.5%）, benthic bony fishes （36.4%）, Cephalopods （6.8%）, Cartilaginous fishes （1.7%） and Fish parts （0.6%）. The Pelagic bony fishes and benthic bony fishes were the major food items during the study period in question, and they were found in all length groups. According to the results that were gleamed from this study, when the size of the sharks increased, the proportion of pelagic bony fishes within the sharks＇ stomachs grew in size, while the benthic bony fishes and Cephalopods decreased in size. The feeding intensity was quite high during the winter, spring and summer, this study is the first to study the Elasmobranchs in Libya, and it will be good base to study another species, specifically.
