Life Cycle of a Silkworm Moth Diagram
33. Life cycle of the silkworm—full sheet with details
A highly synchronous infection method of insect cell cultures by artificial germination of environmental spores was developed and revealed the basic mode of the life cycle of silkworm microsporidians in insect cell cultures. Whereas octosporous sporogony of N. sp. NIS-M11 and V. sp. NIS-M12 could be induced in insect cell lines, disporous sporogony appear to be the basic mode of sporogony in Nosema and Vairimorpha species. Primary spore formation and the extrusion of a secondary infective form from primary spores were directly demonstrated in insect cell cultures infected with N. bombycis, and this evidence changed the concept of the sporogonial sequence in microsporidia. Cloning of N. bombycis NIS-001 was accomplished by a limiting dilution method and several clones of N. bombycis NIS-001 have been obtained. Generally, insect cell lines from Lepidoptera are permissive to silkworm microsporidians, and several insect cell cultures infected persistently with silkworm microsporidians have continued for more than 100 passages. However, some cultures infected persistently with silkworm microsporidians last only less than five passages.
Life Cycle of a Silkworm (with Pictures) | eHow
In 1988, Jim Thompson Farm was established on over a 600-rai area of land at the foot of Phaya Prap Hill in Tambon Takob. The Farm is located about twenty-five kilometers from Pak Thongchai District, Nakorn Ratchasima Province where the Jim Thompson Thai Silk weaving factory is located. The farm not only grows mulberry trees whose leaves are used to feed the silkworm larva, but also sells silkworm eggs to the silk-raising cooperative community. The farm then buys the cocoons from its members to produce silk yarn. Since 2001, the farm has become an agro-tourist attraction and is open annually to the public in December. Visitors are enchanted by the farms natural and scenic beauty. Here they can gain knowledge about the life cycle of silkworm and enjoy viewing numerous varieties of colorful flowers and vegetables as well as shopping for flowering plants and organic agricultural products.