| General information |
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Rita rita (Hamilton, 1822) |
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| Common name | Rita |
| Synonyms |
Pimelodus rita Hamilton, 1822 Arius ritoides Valenciennes, 1840 Rita ritoides (Valenciennes, 1840) Rita buchanani Bleeker, 1853 Arius cruciger Owen, 1853 Rita crucigera (Owen, 1853) |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Bagridae. |
| Geographical distribution |
India; Bangladesh; Pakistan; Myanmar; Nepal; Afghanistan |
| Occurrence |
native: India; native: Bangladesh; native: Pakistan; native: Myanmar; native: Nepal; native: Afghanistan |
| Importance |
Food |
| Karyological information |
| Record 1 |
| Geographical area of study |
Kalyani, West Bengal, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
54 |
| Karyotype formula |
14m+24sm+12st+2t+2T |
| Fundamental arm number |
|
| 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 |
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| Record 2 |
| Geographical area of study |
Sadiapur fish market, Allahabad, Uttar Pradesh, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
54 |
| Karyotype formula |
23m+17sm+10st+4T |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Present in the form of a heteromorphic chromosome |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Bhatnagar VS, Mishra A (1982). Heteromorphism in the Chromosomal Complement of an Indian Catfish, Rita rita (Ham.). Mammalian chromosome newsletter, 23(4): 145-147. |
| Karyotype /Metaphase complement image |
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| Record 3 |
| Geographical area of study |
Nandigram, West Bengal, India |
| Source of chromosomes |
Gill, Kidney and Testis |
| Number of specimens with sex |
4 |
| Diploid chromosome number |
54 |
| Karyotype formula |
14m+34sm+6st |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Barat A (1985). A Study of Chromosomes in Some Indian Teleost (Pisces). Ph.D. Thesis, Kalyani University, West Bengal, India. |
| Karyotype /Metaphase complement image |
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| Record 4 |
| Geographical area of study |
Gomti river, Jaunpur, Uttar Pradesh, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
14 |
| Diploid chromosome number |
54 |
| Karyotype formula |
20m+22s+6st+6t |
| Fundamental arm number |
96 |
| Chromosome length |
1.14 to 2.21 |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
CMA3 staining revelead NORs on terminal position of shortest submetacentric chromosome pair; C-bands on one pair. |
| Reference |
Kushwaha B, Yadav SK, Kumar R, Nagpure NS, Srivastava SK and Lakra WS (2008). Characterization of Freshwater Catfishes Rita Rita (Hamilton, 1822) and Sperata Seenghala (Sykes, 1839) using Fluorescent Chromosome Banding. The Nucleus 51(3): 267-277. |
| Record 5 |
| Geographical area of study |
River Jumna and its adioining tributaries near Delhi, India |
| Source of chromosomes |
Testicular material |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
54 |
| Karyotype formula |
16m+38a |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Not reported |
| Reference |
Nayyar RP(1966). Karyotype studies in thirteen species of fishes. Genetica, 37:78-92. |
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