| General information |
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Pterygoplichthys anisitsi Eigenmann & Kennedy, 1903 |
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| Common name | Snow pleco |
| Synonyms |
Ancistrus anisitsi (Eigenmann & Kennedy, 1903) |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
| Geographical distribution |
India; USA; Brazil; Argentina; Uruguay |
| Occurrence |
introduced: India; introduced: USA; native: Brazil; native: Argentina; native: Uruguay |
| Importance |
Food/Ornamental |
| Karyological information |
| Record 1 |
| Geographical area of study |
Agua Boa stream, Iguatemi River, Mato Grosso do Sul State, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
04 (02 males; 02 females) |
| Diploid chromosome number |
52 |
| Karyotype formula |
14m+26sm+8st+4a |
| Fundamental arm number |
100 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
CMA3-positive signals at the terminal position of the short arms of two sm chromosome pairs that correspond with Ag-NOR sites. |
| Reference |
Karasu M, Yuksel E, Gaffaroglu M (2011). Karyotype, NORs, and C-banding analysis of Pseudophoxinus firati Bogutskaya, Kucuk & Atalay, 2007 (Actinopterygii, Cyprinidae) in the Euphrates River, Turkey. Turkish Journal of Zoology,35(6): 865-868. |
| Record 2 |
| Geographical area of study |
Ãgua Boa stream,Iguatemi River, Mato Grosso do Sul State, Brazil. |
| Source of chromosomes |
Anterior kidney. |
| Number of specimens with sex |
4(2 male and 2 female). |
| Diploid chromosome number |
52 |
| Karyotype formula |
14m+26sm+8st+4a |
| Fundamental arm number |
100 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Ag-NORs located in subtelomeric position on long arm of acÂrocentric chromosome pair 9. Heterochromatic blocks evident at telomeric regions in chromosome pairs 17, 25 and 26. CMA3 signals found in telomeric regions of some chromosomes. |
| Reference |
Fernandes CA, Alves DS, Guterres AR, Martins-Santos IC (2015). Cytogenetic analysis of two locariid species (Teleostei, Siluriformes) from Iguatemi River (Parana River drainage) in Brazil. Comparative Cytogenetics 9(1): 67–78. |
| Record 3 |
| Geographical area of study |
Água Boa stream, Iguatemi River, Mato Grosso do Sul State, Brazil. |
| Source of chromosomes |
Anterior kidney. |
| Number of specimens with sex |
4 (2 male, 2 female) |
| Diploid chromosome number |
52 |
| Karyotype formula |
14m+26sm+8st+4a |
| Fundamental arm number |
100 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Ag-NORs located in subtelomeric position on long arm of acrocentric pair 9, coinciding with a secondary constriction. CMA3 staining produced fluorescent signals bitelomeric in pairs 9, 10. Heterochromatic blocks present at telomeric regions in pairs 17, 25 and 26, along with bitelomeric markings in pairs 10 and 15, and conspicuous large telomeric blocks on long arm of pair 10 and interstitial blocks on long arm pair 9. |
| Reference |
Fernandes CA, Alves DS, Guterres AR, Martins-Santos IC. (2015). Cytogenetic analysis of two locariid species (Teleostei, Siluriformes) from Iguatemi River (Parana River drainage) in Brazil. Comparative Cytogenetics 9(1): 67–78. |
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