1
Macrobrachium rosenbergii seed production in Vietnam : an examination of the performance of broodstock and larvae from sources in Thailand and Vietnam | |
Author | Pham Truong Yen |
Call Number | AIT Thesis no. AS-99-05 |
Subject(s) | Macrobrachium rosenbergii--Thailand Macrobrachium rosenbergii--Vietnam |
Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
Publisher | Asian Institute of Technology |
Series Statement | Thesis ; no. AS-99-05 |
Abstract | Macrobrachium rosenbergii reproductive performance from Thai and Vietnamese sources were compared in this study. The clear water open system was used for larval rearing. Ground water was used as the source of brackish water and freshwater. During the M. rosenbergii larval rearing period, water quality was maintained within suitable ranges for larval development. The source of Vietnamese brood stock was from naturally collected seed cultured in the pond and Thai was from artificially produced domesticated stock. Survival of Thai source postlarvae was significantly different from that of Vietnamese source. The survival and production were 51.87% and 15.6 postlarvae/L for Thai source postlarvae and 16.49% and 5.0 postlarvae/L for Vietnamese source postlarvae, respectively. The trial on the postlarval production from Thai, Vietnamese, and crossbreed (Thai female and Vietnamese male) indicated that there was a significant difference between Thai (9.8 postlarvae/L) and Vietnamese (0.7 postlarvae/L). In addition, significant difference was also observed between Crossbreed (12.0 postlarvae/L) and Vietnamese (0.7 postlarvae/L). However, there was no significant difference between crossbreed and Thai source. Natural reproduction of prawns indicated that the fecundity and the number of larvae per gram of female of Thai source did not significantly differ from those of Vietnamese source. The formalin, oxygen, and salinity challenges of poslarvae showed no significant difference between the two sources. The sources of larvae also affected the development and survival of M rosenbergii. This study indicates that: 1) it is feasible to use ground brackish water to produce and rear Macrobrachium in inland hatcheries, and 2) Thai source has higher survival in a Vietnamese context when compared with Vietnamese source and may be recommended to Vietnam Macrobrachium hatcheries. |
Year | 1999 |
Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AS-99-05 |
Type | Thesis |
School | School of Environment, Resources, and Development (SERD) |
Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
Academic Program/FoS | Agricultural and Aquatic Systems(AS) |
Chairperson(s) | Bart, Amrit N.; |
Examination Committee(s) | Lin, Chang Kwei;Edwards, Peter; |
Scholarship Donor(s) | Government of Netherlands; |
Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |