AI SearchGenetic characterization of Clariid catfish (Clarias Macrocephalus) and its hybrid (female Clarias macrocephalus X male Clarias gariepinus) in Thailand (Record no. 49452)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04189cas|a2200409 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818115030.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 021226s2000 th uu|m rtt 0| a1engxd |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11872093 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. AQ-00-26 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Goel, Amit Kumar |
| 245 10 - TITLE STATEMENT | |
| Title | Genetic characterization of Clariid catfish (Clarias Macrocephalus) and its hybrid (female Clarias macrocephalus X male Clarias gariepinus) in Thailand |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2000 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 50 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. AQ-00-26 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Sc.) - Asian Institute of Technology, 2000 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The culture of hybrid catfish, the hybrid between the native female Clarias macrocephalus and the exotic male Clarias gariepinus, is currently one of the fastest growing sectors of aquaculture in Thailand. The rapid expansion of hybrid catfish culture has also led to concerns about its impacts on genetic diversity of other species and on natural and pure stocks of Clariidae. It is possible that the F 1 hybrid can successfully be used as broodstock for the production of later generation and/or backcross hybrids that may lead to hybrid introgression and loss of unique F 1 hybrid genotypes. This has implication for both aquaculture (through the loss of the desired characteristics of the F 1 hybrid) and for wild populations of the indigenous catfish, which may become introgressed. Allozyme study had indicated that some introgression of C. macrocephalus stocks might be occurring (Chaiparinya 1996). However, DNA markers can be more reliable and informative and involve simpler sampling protocols. Therefore, the nuclear genome was analysed using the nuclear DNA marker, CH4 exon and an alternative marker using restriction fragment length polymorphism (RFLP) of the ND 516 portion of the mitochondrial DNA was also developed. This study suggested that possession of double banded genotype in nmthern population of C. macrocephalus, from Nan, might be an indicative of C. gariepinus introgression. However, other factors, such as non-specific amplification, might be causative of occurrence of double-banded pattern in C. macrocephalus. Elsewhere, C. macrocephalus populations populating the other regions of Thailand did not show any sign of C. gariepinus fixed double banded genotype. These findings suggest that the hybrid introgression be in its early stage. However, if situation persists, ceaseless introgressive hybridization may be deleterious to existing genetic resources of the Clariidae in Thailand. These results also suggest that for introgression studies the use of mitochondrial DNA marker is not very useful especially when only one way hybridization is going on and introgression is not extensive. However, an appropriate nuclear DNA marker(s) coupled with indigenous knowledge and an informed sampling strategy will enable a full understanding of the introgression issue in Clariidae in Thailand. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Catfishes |
| General subdivision | Genetics |
| Geographic subdivision | Thailand |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Hybridization |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mair, G.C., |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Macaranas, Julie M., |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Stevens, Willem Frans, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Bart, Amrit N., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | H. M. The Queen of Thailand, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. AQ-00-26 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B07177">http://203.159.5.9/ait-thesis/detail.php?q=B07177</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11872093 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240403 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 021226 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120696785 |
| CREATED | CREATED : 2001-07-29 |
| RECORD Id | RECORD # : i12310840 |
| LPATRON | LPATRON : 1017164 |
| LCHKIN | LCHKIN : 2005-10-22 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 2 |
| -- | TOT RENEW : 1 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120357818 |
| CREATED | CREATED : 2016-08-06 |
| RECORD Id | RECORD # : i13024188 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no. AQ-00-26 | 30050120696785 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no. AQ-00-26 | 30050120357818 | 18/08/2026 | 1 | 18/08/2026 | 40-Archives |