Pinirampus pirinampu is a species of catfish (order Siluriformes) of the family Pimelodidae. P. pirinampu is also known as the flatwhiskered catfish.[8]
| Pinirampus | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Pimelodidae |
| Genus: | Pinirampus Bleeker 1858 |
| Species: | P. pirinampu
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| Binomial name | |
| Pinirampus pirinampu | |
| Synonyms[7] | |
Taxonomy
editThis species was first described as Pimelodus barbancho; however, this is considered a nomen oblitum.[7] It was then described as Pimelodus pirinampu in 1829. In 1858, the genus Pinirampus was described for this species, in which it is usually classified as the only species.[7][9] However, Megalonema argentinum has sometimes been considered a part of this genus.[10]
Distribution
editThis species is found in the Amazon, Essequibo, Orinoco, and Paraná basins.[8]
Description
editP. pirinampu may reach a length of 60–75 centimetres (24–30 in) and an average weight of 3–5 kilograms (6.6–11.0 lb).[11] This species has a maximum published weight of 7.68 kg (16.93 lb).[8] These fish reach sexual maturity at just under 60 cm (24 in) in length.[12]
Ecology
editP. pirinampu occurs in schools.[8] These catfish feed on benthic animals; they are nonspecialist feeders preying upon fish such as Iheringichthys labrosus and piranha Serrasalmus sp..[8][11] In the Amazon basin, these fish are preyed upon by Zungaro zungaro.[11] These fish are known from temperatures ranging from 24 to 29 °C (75 to 84 °F), pH range of 6 to 8, and an alkalinity range of 42 to 142 mEq/L.[8]
P. pirinampu is a species of migratory catfish. These fish gather in schools in the dry season to swim upstream to the headwaters, where they spawn at the onset of the rainy season in February. After spawning, the adults and juveniles drift downstream, reaching flooded areas or reservoirs used as foraging, growth sites and shelter against predation.[12][11]
Relationship to humans
editP. pirinampu is important for the fishery yield in Amazonas, Mato Grosso, Mato Grosso do Sul, Paraná, and Roraima states.[11] This species is included in the fishery statistics on the Paraguay River basin.[12] Brazil's Mato Grosso do Sul state government has adopted the criterion of 60 cm (24 in) TL minimum capture size for P. pirinampu.[12] P. pirinampu is an attractive fish for both leisure and professional sport fishers due to its tasteful meat and its fighting behavior.[11]
This species is one of the top ten dominant species in professional landings in the Itaipu reservoir of the Paraná river, where it is captured with longlines and cast nets in the upper half of the reservoir.[11] This species is also among the most important fishery resources in the Eng Souza Dias (Jupiá) Reservoir in the Upper Paraná river and the Águas Vermelhas reservoir in the Grande River.
References
edit- ^ Salvador, G.N. (2023). "Pinirampus pirinampu". IUCN Red List of Threatened Species. 2023: e.T187054A1822429. doi:10.2305/IUCN.UK.2023-1.RLTS.T187054A1822429.en. Retrieved 22 February 2024.
- ^ de Spix, J. B.; Aassiz, L. (1829). "Pimelodus pirinampú". Selecta genera et species piscium. Monachium: C. Wolf. pp. 20–21.
- ^ Schomburgk, Robert H. (1841). "Black-Spotted Green Pimelodus". The natural history of the fishes of Guiana. Edinburgh: W. H. Lizars. pp. 180–181.
- ^ de Castelnau, Francis (1855). "Galeichthys araguayensis, nov. sp.". Animaux Nouveaux or Rares Recueillis Pendant l'Expédition dans les Parties Centrales de l'Amérique du Sud. Vol. 2. Paris: P. Bertrand. p. 37.
- ^ Bleeker, P. (1862). Siluroïdes, Chacoïdes et Hétérobranchoïdes. Atlas ichthyologique des Indes orientales néêrlandaises. Vol. 2. Amsterdam: Frédéric Muller. p. 11.
- ^ Steindachner, Franz (1876). "Ichthyologische Beiträge. IV". Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. 72: 607–609.
- ^ a b c Ferraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 339. doi:10.11646/zootaxa.1418.1.1.
- ^ a b c d e f Froese, Rainer; Pauly, Daniel (eds.). "Pinirampus pirinampu". FishBase. February 2012 version.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Pinirampus". FishBase.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Megalonema argentinum". FishBase. February 2024 version.
- ^ a b c d e f g Dias, J.H.; Britto, S.G.C.; Vianna, N.C.; Garavello, J.C. (2004). "Biological and ecological aspects of Pinirampus pirinampu (Spix, 1829), Siluriformes, Pimelodidae, in Capivara reservoir, Paranapanema River, Southern Brazil" (PDF). Acta Limnol. Bras. 16 (3): 293–304.
- ^ a b c d Peixer, J.; Mateus, L. A. F.; Resende, E. K. (2006). "First gonadal maturation of Pinirampus pirinampu (Siluriformes: Pimelodidae) in the Pantanal, Mato Grosso do Sul State, Brazil" (PDF). Braz. J. Biol. 66 (1B): 317–323. doi:10.1590/S1519-69842006000200014. PMID 16710524.