The breeding ecology of Coracia pyrrhocorax in Pangquangou Natural Reserve were studied from March to December, 1985-1991. The studies included habitats, population density, bree ding, food,and etc. The bird bred from...The breeding ecology of Coracia pyrrhocorax in Pangquangou Natural Reserve were studied from March to December, 1985-1991. The studies included habitats, population density, bree ding, food,and etc. The bird bred from March to July, mating system was monogamy. The bird began nesting in March, began to lay eggs between middle to late March, laying one egg per day, and the clutch size was 4-6. Incubation period was 18-22 days, and the hatching success rate was 94.20%. Brooding periods was 25-31 days in the nest and 11-15 days after fledging.展开更多
Five species, Lipopora lissa Jell and Jell, 1976, Lipopora daseia Jell and Jell, 1976, Tretocylichne perplexa Engelbretsen, 1993 from Australia, Cambroctoconus orientalis Park, Woo, Lee, Lee, Lee, Han and Chough, 2011...Five species, Lipopora lissa Jell and Jell, 1976, Lipopora daseia Jell and Jell, 1976, Tretocylichne perplexa Engelbretsen, 1993 from Australia, Cambroctoconus orientalis Park, Woo, Lee, Lee, Lee, Han and Chough, 2011 from China, and Cambroctoconus kyrgyzstanicus Peel, 2014 from Kyrgyzstan, belonging to the Cambrian stem-group cnidarians have been documented in the fossil record. Cambroctoconus coreaensis sp. nov., interpreted here as a stem-group cnidarian, from the Seokgaejae section in the Daegi Formation, Taebaek Group(Cambrian Series 3), Taebaeksan Basin, central-eastern Korean Peninsula, has a slender cup-shaped skeleton. A cladistic analysis produced 21 most parsimonious trees, which invariably placed the six stem-group cnidarians below the crown-group, but their relationships within the stem-group are unresolved. Nine out of the 21 trees suggest a monophyletic relationship for the Cambrian stem-group cnidarians, whereas in six other trees a monophyly of Cambroctoconus and Tretocylichne appeared as the sister-group to the crown-group cnidarians with Lipopora at the most basal branch. This result may reflect the fact that crown-group cnidarians evolved in the Precambrian, and suggests that the diversity of stem-group cnidarians was a result of an independent radiation in the Cambrian.展开更多
文摘The breeding ecology of Coracia pyrrhocorax in Pangquangou Natural Reserve were studied from March to December, 1985-1991. The studies included habitats, population density, bree ding, food,and etc. The bird bred from March to July, mating system was monogamy. The bird began nesting in March, began to lay eggs between middle to late March, laying one egg per day, and the clutch size was 4-6. Incubation period was 18-22 days, and the hatching success rate was 94.20%. Brooding periods was 25-31 days in the nest and 11-15 days after fledging.
基金supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (#PN15090, KOPRI)supported by a grant from the National Research Foundation of Korea (NRF 2012-005612)IGCP Project 591: The Early to Middle Paleozoic Revolution
文摘Five species, Lipopora lissa Jell and Jell, 1976, Lipopora daseia Jell and Jell, 1976, Tretocylichne perplexa Engelbretsen, 1993 from Australia, Cambroctoconus orientalis Park, Woo, Lee, Lee, Lee, Han and Chough, 2011 from China, and Cambroctoconus kyrgyzstanicus Peel, 2014 from Kyrgyzstan, belonging to the Cambrian stem-group cnidarians have been documented in the fossil record. Cambroctoconus coreaensis sp. nov., interpreted here as a stem-group cnidarian, from the Seokgaejae section in the Daegi Formation, Taebaek Group(Cambrian Series 3), Taebaeksan Basin, central-eastern Korean Peninsula, has a slender cup-shaped skeleton. A cladistic analysis produced 21 most parsimonious trees, which invariably placed the six stem-group cnidarians below the crown-group, but their relationships within the stem-group are unresolved. Nine out of the 21 trees suggest a monophyletic relationship for the Cambrian stem-group cnidarians, whereas in six other trees a monophyly of Cambroctoconus and Tretocylichne appeared as the sister-group to the crown-group cnidarians with Lipopora at the most basal branch. This result may reflect the fact that crown-group cnidarians evolved in the Precambrian, and suggests that the diversity of stem-group cnidarians was a result of an independent radiation in the Cambrian.
