tailieunhanh - Manual on the Production and Use of Live Food for Aquaculture - Phần 5

Tham khảo tài liệu 'manual on the production and use of live food for aquaculture - phần 5', nông - lâm - ngư, ngư nghiệp phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Triantaphyllidis . Zhang B. Zhu L. and Sorgeloos P. 1994. International Study on Artemia. L. Review of the literature on Artemia from salt lakes in the People s Republic of China. International Journal of Salt Lake Research 3 1-12. Vanhaecke P. Tackaert W. and Sorgeloos P. 1987. The biogeography of Artemia an updated review. In Artemia research and its applications. Vol. 1. Morphology genetics strain characterisation toxicology. Sorgeloos P. . Bengtson W. Decleir and E. Jaspers Eds Universa Press Wetteren Belgium pp 129-155. QEIDj S Q . Use of cysts . Cyst biology . Disinfection procedures Decapsulation . Direct use of decapsulated cysts . Hatching . Literature of interest . Worksheets Gilbert Van Stappen Laboratory of Aquaculture Artemia Reference Center University of Gent Belgium . Cyst biology Cyst morphology Physiology of the hatching process . Effect of environmental conditions on cyst metabolism . Diapause . Cyst morphology A schematic diagram of the ultrastructure of an Artemia cyst is given in Fig. . Figure . Schematic diagram of the ultrastructure of an Artemia cyst. modified from Morris and Afzelius 1967 The cyst shell consists of three layers alveolar layer a hard layer consisting of lipoproteins impregnated with chitin and haematin the haematin concentration determines the color of the shell . from pale to dark brown. Its main function is to provide protection for the embryo against mechanical disruption and UV radiation. This layer can be completely removed dissolved by oxidation treatment with hypochlorite cyst decapsulation see . . outer cuticular membrane protects the embryo from penetration by molecules larger than the CO2 molecule multilayer membrane with very special filter function acts as a permeability barrier . embryonic cuticle a transparent and highly elastic layer separated from the embryo by the inner cuticular membrane develops into .