TAILIEUCHUNG - Summary of Biology doctoral thesis: Study on biological characteristics and seed production techniques of the Helmet Catfish - Cranoglanis bouderius (Richardson, 1846) in culture conditions of Nghe An province

To provide scientific data on biological characteristics, breeding techniques, nursing and grow-out of Helmet Catfish - Cranoglanis bouderius (Richardson, 1846) in culture condition of Nghe An province. The success of the thesis will greatly contribute the basic knowledge to develop the seed production technique that can help to support the seed resources for commercial culture models and gene resources conservation for this species. | MINISTRY OF EDUCATION VIETNAM ACADEMY AND TRAINING OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY . . NGUYEN ĐINH VINH RESEARCH ON BIOLOGICAL CHARACTERISTICS AND SEED PRODUCTION TECHNIQUES OF THE HELMET CATFISH - Cranoglanis bouderius Richardson 1846 IN CULTURE CONDITION OF NGHE AN PROVINCE Major ZOOLOGY Code 62 42 01 03 SUMMARY OF BIOLOGY DOCTORAL THESIS Hanoi 2017 This doctoral thesis was completed at Graduate University of Science and Technology Vietnam Academy of Science and Technology. Scientific supervisor 1 Ass. Prof. Dr. Nguyen Huu Duc Scientific supervisor 2 Dr. Nguyen Kiem Son Reviewer 1 Reviewer 2 Reviewer 3 . This doctoral thesis will be defended at the graduate university committee of doctoral thesis evaluation at Graduate University of Science and Technology Vietnam Academy of Science and Technology on . See the detailed thesis at - Library of Graduate University of Science and Technology - Vietnam National Library PREAMBLE 1. The necessity of the thesis Helmet Catfish - Cranoglanis bouderius Richardson 1846 is a species of order Siluriformes family Cranoglanididae. In the world Helmet Catfish are distributed in China the areas sharing the same border with Vietnam are Hainan Guangdong Guangxi Yunnan . In Vietnam the Helmet Catfish is commonly found in all river systems from the North Red River Ma River Lam River to the South Central. The lowest limit toward the South of this species is Tra Khuc River - Quang Ngai. Helmet Catfish is distributed in the bottom level and bottom nearing level preferring to live in places where water runs regularly or slowly muldy sandy bottom. Fishes usually live in shoals mainly in the downstream areas more than middle and upstream rivers in the Northern provinces. Helmet Catfish has high nutritional value. Zhang et al. 2009 conducted an analysis of fatty acid to evaluate the nutritional value of Helmet Catfish meat and indicated that there was total of 11 fatty acids including 4 saturated fatty .

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