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Megaleporinus obtusidens (Valenciennes, 1837)
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Pictures | Google afbeelding
Megaleporinus obtusidens
Picture by Equipe de Ictiologia do Nupélia
Pictures | Google afbeelding
Picture by Equipe de Ictiologia do Nupélia
Argentina country information
Common names:
Açu, Boga, Bogón
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Paraná, Uruguay and Paraguay River basins (Ref. 93038). Found also Also Ref. 9086, 11229, 51923, 56308. Status of theat: Indeterminate (Ref. 51923).
National Checklist: Argentina
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ar.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Britski, H.A., J.L.O. Birindelli and J.C. Garavello, 2012
National Database:
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Paraná, Uruguay and Paraguay River basins (Ref. 93038). Found also Also Ref. 9086, 11229, 51923, 56308. Status of theat: Indeterminate (Ref. 51923).
National Checklist: Argentina
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ar.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Britski, H.A., J.L.O. Birindelli and J.C. Garavello, 2012
National Database:
Common names from other countries
Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa
> Characiformes (Characins) > Anostomidae (Headstanders)
Etymology: Megaleporinus: Name from Greek 'mega' meaning large or largest, plus Leporinus, the genus which most species (now in this genus) were previously assigned; refrring to the large size of most congeners.
More on author: Valenciennes.
Etymology: Megaleporinus: Name from Greek 'mega' meaning large or largest, plus Leporinus, the genus which most species (now in this genus) were previously assigned; refrring to the large size of most congeners.
More on author: Valenciennes.
Environment: milieu / climate zone / depth range / distribution range Ecologie
; zoet water benthopelagisch; potamodroom (Ref. 51243). Subtropical
Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri
South America: Paraná, La Plata and São Francisco, Uruguay, Paraguay, Guaíba and Parnaíba River basins
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 21.6 range ? - ? cm
Max length : 76.0 cm TL mannelijk / geslacht onbekend; (Ref. 79585); max. gepubliceerd gewicht: 5.8 kg (Ref. 79585)
Max length : 76.0 cm TL mannelijk / geslacht onbekend; (Ref. 79585); max. gepubliceerd gewicht: 5.8 kg (Ref. 79585)
Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 11 - 12; Anale zachte stralen: 10 - 11; Wervels: 39. Can be diagnosed from most congeners, except Leporinus amblyrhynchus, L. conirostris, L. desmotes, L. despaxi, L. elongatus, L. jatuncochi, L. macrocephalus, L. muyscorum, L. piavussu, L. reinhardti, L. trifasciatus and L. wolfei, by possessing three teeth on each premaxilla and dentary (tooth formula 3/3; vs. tooth formulae 3/4, 4/4 or 4/3). Differs from Leporinus amblyrhynchus, L. conirostris, L. desmotes, L. despaxi, L. jatuncochi, L. macrocephalus, L. muyscorum, L. reinhardti, L. trifasciatus and L. wolfei by having three dark rounded blotches on the body and dark transverse bars usually persistent in large specimens (vs. body with a dark midlateral stripe in L. amblyrhynchus, and L. despaxi; transverse dark bands in L. desmotes and L. jatuncochii; body pale except for a single dark blotch on the caudal peduncle in L. conirostris; first blotch, below the dorsal fin, transversely elongated in L. macrocephalus, L. trifasciatus and L. wolfei; transverse bars faded in large specimens of L. muyscorum; and the blotch on the caudal peduncle longitudinally elongated, not rounded, sometimes making contact with the second blotch in L. reinhardti). Can be further distinguished from Leporinus muyscorum by having six or seven scale rows between lateral line and dorsal-fin origin (vs. five); from Leporinus elongatus by having 16 scales rows around the caudal peduncle (vs. 12). Differs from a similar species Leporinus piavussu by having 41 to 43, rarely 44 perforated scales in the lateral line (vs. 39 to 40, rarely 41). Individuals of Leporinus obtusidens from the upper Rio Paraná basin can be separated from individuals of L. piavussu by having mouth directed somewhat or entirely downward, its cleft at horizontal through ventral orbital margin or slightly below (vs. mouth terminal, its cleft above horizontal through ventral orbital margin) (Ref. 93038)
Adults inhabit medium to large rivers accomplishing very long reproductive and feeding
migration in rivers of the Paraná basin (Ref. 93038). They also occur in ponds. Omnivorous (Ref. 79585). Distinct pairs breed on densely grown weedy places (Ref. 205).
Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Distinct pairs breed on densely grown weedy places (Ref. 205).
Hoofdreferentie
Upload your references | Referenties | Coördinator : Garavello, Júlio | Medewerkers
Ramirez, J.L., J.L.O. Birindelli and P.M. Galetti Jr., 2017. A new genus of Anostomidae (Ostariophysi: Characiformes): Diversity, phylogeny and biogeography based on cytogenetic, molecular and morphological data. Molecular Phylogenetics and Evolution, 107: 308-323. (Ref. 113781)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-2)
Niet bedreigd (LC) ; Date assessed: 05 September 2020
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel; Aquacultuur: commercieel; sportvis: ja
FAO(Publication : search) | FishSource |
Meer informatie
Population dynamics
Groeiparameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Lengtefrequenties
Massaconversie
Rekrutering
Abundantie
Groeiparameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Lengtefrequenties
Massaconversie
Rekrutering
Abundantie
Life cycle
Voortplanting
Maturiteit
Fecunditeit
Paaien
Spawning aggregations
Eieren
Ontwikkeling van de eieren
Larven
Larvale populatiedynamiek
Voortplanting
Maturiteit
Fecunditeit
Paaien
Spawning aggregations
Eieren
Ontwikkeling van de eieren
Larven
Larvale populatiedynamiek
Anatomy
Kieuwoppervlak
Brain
Otolith
Kieuwoppervlak
Brain
Otolith
Physiology
Body composition
Nutrients
Zuurstofverbruik
Zwemtype
Zwemsnelheid
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Zuurstofverbruik
Zwemtype
Zwemsnelheid
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
Aquacultuurprofielen
Kweeklijnen
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquacultuurprofielen
Kweeklijnen
Ciguatera cases
Stamps, coins, misc.
Tools
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Internetbronnen
Aquatic Commons | BHL | Cloffa | Websites from users | Bekijk FishWatcher | CISTI | Catalog of Fishes(Genus, Soort(en)) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genoom, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationale databanken | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(ga naar, zoek) | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Fylogenetische diversiteitsindex (Ref. 82804): PD50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00957 - 0.01443), b=3.07 (3.03 - 3.11), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trofisch niveau (Ref. 69278): 3.2 ±0.17 se; based on food items.
Weerstandsvermogen (Ref. 120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.19).
Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (50 of 100).