| General information |
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Lates calcarifer (Bloch,1790) |
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| Common name | Barramundi |
| Synonyms |
Holocentrus calcarifer Bloch, 1790 Coius vacti Hamilton, 1822 Pseudolates cavifrons Alleyne & Macleay, 1877 Lates darwiniensis Macleay, 1878 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Saltwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Euteleostei; Neoteleostei; Acanthomorpha; Acanthopterygii; Percomorpha; Perciformes; Latidae. |
| Geographical distribution |
India; China; Japan; Indonesia; Bangladesh; Malaysia; Sri Lanka; Pakistan; Philippines; Singapore; Thailand; Taiwan; Vietnam; Israel; Myanmar; Hong Kong; Cambodia; Brunei; Australia; Papua New Guinea; Fiji; Marshall Islands; New Caledonia; Solomon Islands; Vanuatu |
| Occurrence |
native: India; native: China; native: Japan; native: Indonesia; native: Bangladesh; native: Malaysia; native: Sri Lanka; native: Pakistan; native: Philippines; native: Singapore; native: Thailand; native: Taiwan; native: Vietnam; not established: Israel; native: Myanmar; native: Hong Kong; native: Cambodia; native: Brunei; native: Australia; native: Papua New Guinea; questionable: Fiji; native: Marshall Islands; native: New Caledonia; native: Solomon Islands; native: Vanuatu |
| Karyological information |
| Record 1 |
| Geographical area of study |
Vellar Estuary, South eastcoast of India |
| Source of chromosomes |
Gills |
| Number of specimens with sex |
Immature specimen |
| Diploid chromosome number |
48 |
| Karyotype formula |
46m+2sm |
| Fundamental arm number |
|
| Chromosome length |
1.00 to 2.67 |
| Sex chromosome |
No heteromorphism in karyotype |
| Chromosome staining/banding/FISH |
Not reported |
| Reference |
Natarajan R, Subrahmanyam K (1974). A karyotype study of some teleosts from Portonovo waters. Proceedings of the Indian Academy of Sciences - Section B79(5): 173-196. |
| Record 2 |
| Geographical area of study |
Andaman sea, Phuket Province, Thailand |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
04 (02 females; 02 males) |
| Diploid chromosome number |
48 |
| Karyotype formula |
2m+2sm+2a+42t |
| Fundamental arm number |
52 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Presence of single pair of NORs on short arm telomeric region of large acrocentric chromosome pair 3. |
| Reference |
Phimphan S, Tanomtong A, Supiwong W, Nithikulworawong N, Suvarnaraksha A, Kaewsri S (2015). Karyological analysis of the Barramundi, Lates calcarifer (Perciformes, Latidae). Cytologia, 80(2):167-172. |
| Record 3 |
| Geographical area of study |
Marine Aquaculture Center, St John’s Island,Singapore |
| Source of chromosomes |
Cell culture |
| Number of specimens with sex |
|
| Diploid chromosome number |
48 |
| Karyotype formula |
2m+2sm+22st+22a |
| Fundamental arm number |
- |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Individual karyotypes contained variable numbers (2–10) of additional micro chromosomes, suggested as B-chromosomes. CMA3 staining showed presence of a GC-rich block near pericentromeric chromatin in most chromosomes. All chromosome spreads had atleast two GC-rich B-chromosomes, whereas AT-rich B-chromosomes were detected in 60% chromosome spreads. |
| Reference |
Kuznetsova IS, Thevasagayam NM, Sridatta PS, Komissarov AS, Saju JM, Ngoh SY, Jiang J, Shen X and Orbán L. (2014). Primary analysis of repeat elements of the Asian seabass (Lates calcarifer) transcriptome and genome. Front Genet. 5: 1-14, Article 223. |
| Karyology remarks |
5S rDNA signal was located on single chromosome pair, whereas 18S rDNA was found on two pairs of chromosomes. |
| Record 4 |
| Geographical area of study |
Backwaters o f Puduvaippu (Cochin), Kerala and Tuticorin in Tamil Nadu. |
| Source of chromosomes |
Kidney and gill tissues. |
| Number of specimens with sex |
14 from Cochin and 10 from Tuticorin. |
| Diploid chromosome number |
48 |
| Karyotype formula |
2m+8sm+38t/a |
| Fundamental arm number |
55 |
| Chromosome length |
Average chromosome length was 2.9284 (range 3.7504 |
| Sex chromosome |
Sex chromosomes morphologically unidentifiable. |
| Chromosome staining/banding/FISH |
- |
| Reference |
Sudheesh PS (1989). Karyomorphology of Lates calcarifer. Dissertation submitted in partial fulfilment for the Degree of Master of Science (Mariculture) of the Cochin University of Science and Technology. pp. 1-59. |
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