Classificazione / Nomi
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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); guaricana: Named for its type locality, the Guaricana Reservoir of Paraná State, Brazil. A noun in apposition.
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical
South America: tributaries of the rio Cubatão, coastal basin of Paraná State, Brazil.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 9.6 cm SL maschio/sesso non determinato; (Ref. 93808)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 9 - 10; Vertebre: 39 - 40. This species belongs to the Astyanax scabripinnis species complex sensu. It is distinguished from congeners of the A. scabripinnis species complex, except A. intermedius, A. laticeps, A. paranae and A. varzeae by having 40-43 teral line scales, (vs. less than 39 scales in A. brachypterygium, A. burgerai, A. courensis, A. cremnobates, A. epiagos, A. goyanensis, A. ita, A. jacobinae, A. jenynsii, A. jordanensis, A. leonidas, A. microschemos, A. obscurus, A. ojiara, A. paris, A. pirapuan, A. rivularis, A. scabripinnis, A. totae, and A. troya). Only A. obscurus and A. ojiara have a maximum of 39 lateral line scales. A. guaricana can be separated from A. ojiara, by having 15-17 circumpeduncular scales (vs. 13-14 scales) and A. obscurus, by having 9-15 scales covering base of anal fin (vs. 6-9 scales). It differs from A. intermedius, A. laticeps and A. paranae by the presence of two vertical humeral spots (vs. a single humeral spot in A. paranae and A. intermedius, which is horizontally oval with narrow and vertical anterior extension in A. laticeps); from A. varzeae by the presence of hooks on the anal fin in males (vs. hooks absent), by a shorter prepectoral distance 23.7-26.5% SL (vs. 26.5-32.0% SL), shorter head length 23.9-26.6% SL (vs. 27.1-29.7% SL), and longer snout length 23.3-27.9% head length (vs. 16.4-23.3% head length); and from A. ribeirae by having two humeral spot (vs. one) and 40-43 lateral line scales (vs. 34-38 lateral line scales) (Ref. 93808).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Oliveira, C.A.M., V. Abilhoa and C.S. Pavanelli, 2013. Astyanax guaricana a (Ostariophysi: Characidae), a new species from the rio Cubatão drainage, Paraná State, Southern Brazil. Neotrop. Ichthyol. 11(2):291-296. (Ref. 93808)
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=0.01047 (0.00452 - 0.02424), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 2.9 ±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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