| General information |
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Labeo rohita (Hamilton, 1822) |
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| Common name | Roho labeo, Rohu |
| Synonyms |
Cyclocheilichthys amblyceps Fowler, 1937 Cyprinus rohita Hamilton, 1822 |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Cypriniformes; Cyprinidae. |
| Geographical distribution |
India; China; Japan; Bangladesh; Malaysia; Sri Lanka; Pakistan; Philippines; Thailand; Vietnam; Myanmar; Laos; Cambodia; Bhutan; Nepal; Madagascar; Mauritius; Zimbabwe |
| Occurrence |
native: India; not established: China; not established: Japan; native: Bangladesh; not established: Malaysia; introduced: Sri Lanka; native: Pakistan; introduced: Philippines; introduced: Thailand; introduced: Vietnam; native: Myanmar; not established: Laos; introduced: Cambodia; introduced: Bhutan; native: Nepal; introduced: Madagascar; introduced: Mauritius; introduced: Zimbabwe |
| Remarks |
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| Karyological information |
| Record 1 |
| Geographical area of study |
Lucknow, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
50 |
| Karyotype formula |
6m+16sm+8st+20t |
| Fundamental arm number |
72 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Nagpure NS (1997). Distribution of C-band heterochromatin in Labeo rohita, Ham. (cyprinidae). Chromosome Science, 1: 45-46. |
| Karyology remarks |
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| Karyotype /Metaphase complement image |
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| Record 2 |
| Geographical area of study |
Allahabad, Uttar Pradesh, India |
| Source of chromosomes |
Gills and kidney |
| Number of specimens with sex |
6 |
| Diploid chromosome number |
50 |
| Karyotype formula |
10m+14sm+6st+20T |
| Fundamental arm number |
74 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Ag-NORs were present terminally on short arm of one submetacentric chromosome pair. |
| Reference |
John G, Barat A, Lakra WS (1993). Localization of nucleolar organizer regions in Labeo (Cyprinidae). La Kromosomo, 2(70): 2381-2384. |
| Karyotype /Metaphase complement image |
|
| Record 3 |
| Geographical area of study |
Kalyani, West Bengal, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
50 |
| Karyotype formula |
18m+8sm+4st+8t+12T |
| Fundamental arm number |
76 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Prasad R (1971). Ph.D. Thesis, Kalyani University, Kalyani, West Bengal, India. |
| Karyotype /Metaphase complement image |
|
| Record 4 |
| Geographical area of study |
Lucknow, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
6 |
| Diploid chromosome number |
50 |
| Karyotype formula |
10m+14sm+8st+18t |
| Fundamental arm number |
74 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Ag-NOR sites on 2 chromosome pairs |
| Reference |
Nagpure NS, Kushwaha B, Srivastava SK, Ponniah AG (2001). Comparative cytogenetic studies in Indian major carps Labeo rohita, Catla catla and Cirrhinus mrigala (Cyprinidae, Pisces). Chromosome Science, 5: 153-158. |
| Karyotype /Metaphase complement image |
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| Record 5 |
| Geographical area of study |
Ayuthaya, Thailand |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
2 |
| Diploid chromosome number |
50 |
| Karyotype formula |
14m+16sm+8st+12a |
| Fundamental arm number |
80 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
NORs were found on a submetacentric and an acrocentric chromosome pair. |
| Reference |
Magtoon W, Arai R (1993). Karyotypes and distribution of nucleolus organizer regions in cyprinid fishes from Thailand. Japanese Journal of Ichthyology, 40(1): 77-85. |
| Record 6 |
| Geographical area of study |
Poondi freshwater aquaculture station. |
| Source of chromosomes |
Gill tissue. |
| Number of specimens with sex |
- |
| Diploid chromosome number |
50 |
| Karyotype formula |
22m+28sm |
| Fundamental arm number |
- |
| Chromosome length |
Chromosome length ranged from 2.2*10-3 to 6.5*10-3 |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Nucleolar organiser region was found in pair one and heterochromatin region were observed in all the other pairs. |
| Reference |
Nandini S, Arockia Rita JJ (2014). Karyomorphology of two major carps, Catla catla and Labeo rohita. Bioresearch Bulletin, Jun 26, Edition 1, 1-7. |
| Cross Link |