Classificazione / Nomi
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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Stethaprioninae
Etymology: Deuterodon: Greek, deuter = second + Greek, odous = teeth (Ref. 45335); oyakawai: Named for Osvaldo T. Oyakawa from MZUSP, the collector of many of the specimens that served as the basis of this paper, in appreciation of his major contributions to our knowledge of the fishes of the rio Ribeira de Iguape basin.
Eponymy: Dr Osvaldo Takeshi Oyakawa is a marine biologist and limnologist at the Museu de Zoologia da Universidade de São Paulo where his doctorate was awarded (1998). [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical
South America: rio Ribeira de Iguape basin, Brazil.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 6.4 cm SL maschio/sesso non determinato; (Ref. 96884)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 11; Vertebre: 33 - 34. Probolodus oyakawai is distinguished from its two congeners, P. heterostomus and P. sazimai, by the following characters: the base of the large epural not leaning against the urostyle bone (vs. the base of the large epural in contact, not fused the urostyle); first and second infraorbitals contacting but not overlapping (vs. relationship with overlapping or leaning against); posterior portion of the maxilla extended in relation to median portion (vs. posterior portion of the same width than median portion); anterior extension of nasal reaching the lateral projection of mesethmoid (vs. outpacing the end of the projection of mesethmoid). It further differs from P. heterostomus by having 41-43 perforated scales on the lateral line (vs. 45-56 perforated scales), 14-16 scale series around the caudal peduncle (vs. 18-21 scale series around the caudal peduncle), and body relatively shorter, with 33-34 total vertebrae (vs. 34-35 vertebrae) (Re. 96884).
Body shape (shape guide): fusiform / normal.
Fish scales were found in the stomach contents of three specimens (Ref. 96884).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Terán, G.E., M.F. Benitez and J.M. Mirande, 2020. Opening the Trojan house: phylogeny of Astyanax, two genera and resurrection of Psalidodon (Teleostei: Characidae). Zool. J. Lin. Soc. 190(4):1217-1234. (Ref. 123753)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00517 - 0.02671), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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