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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: jariensis: The specific name jariensis is used in reference to the type locality, the rio Jari, a large tributary of the rio Amazon basin..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal. Tropical
South America: Rio Jari basin in Amapá State, Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 6.1 cm SL macho/indeterminado; (Ref. 118148)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 2; Raios dorsais (total) : 7; Espinhos anais: 1; Raios anais : 5. Lithoxus jariensis is distinguished from its congeners L. surinamensis and L. pallidimaculatus by having an adipose fin (vs. adipose fin absent); from L. bovallii by the lack of an irregular concentration of chromatophores around the anal-fin origin and adjacent region (vs. present), and by having three dark bands in the caudal fin (vs. five dark bands); from L. lithoides and L. jantjae by having five branched rays in the anal fin (vs. four); from L. pallidimaculatus and L. raso by the lack of light spots on the body (vs. light spots on the body present); from L. jantjae by having 14 branched rays in the caudal fin (vs. 12); and from L. stocki by having medial premaxillary teeth with an enlarged and widened cusp (vs. cusps of all premaxillary teeth similar in size, not enlarged), and 5-8 dentary teeth (vs. 10-12). In addition, Lithoxus jariensis can be diagnosed from L. boujardi by having a greater adipose-spine length, 6.2-10.1% SL (vs. 3.6-4.7% SL), and by having a greater dorsal adipose-caudal distance, 12.0-16.5% SL (vs. 10.3-11.7% SL); from L. planquettei by smaller caudal peduncle depth, 7.6-8.7% SL (vs. 9.7-10.5% SL), and by having a straight adipose-fin spine (vs. a curved adipose-fin spine); and from L. stocki by having a shorter cleithral width, 27.8-31.2% SL (vs. 32.6-34.2% SL), and a greater dorsal-anal distance, 10.4-13.7% SL (vs. 8.8-10.4% SL) (Ref. 118148).
Facultative air-breathing in the genus (Ref. 126274); Inhabits the bottom of fast-flowing clear-water rivers of medium to large size. The bottom of the rivers consists of small to large rocks, loose stones, and sand (Ref. 118148).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
Silva, G.S.C., R. Covain, C. Oliveira and F.F. Roxo, 2017. Description of two new species of Lithoxus (Hypostominae: Loricariidae) from rio Jari and rio Amapá basins, Brazillian Guiana shield. Zootaxa 4347(1):151-168. (Ref. 118148)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00712 - 0.03216), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
