Classification / Names
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Atheriniformes (Silversides) >
Atherinopsidae (Neotropical silversides) > Atherinopsinae
Etymology: Odontesthes: Greek, odous = teeth + Greek,esthes = suit, something used to wrap (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce demersale. Tropical
South America: upper rio Uruguay and rio Passo Fundo in Brazil.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 16.9 cm SL maschio/sesso non determinato; (Ref. 116661)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi anali molli: 15 - 17. Odontesthes yucuman is diagnosed from other species of Odontesthes, except members of the O. perugiae species-group (O. bicudo, O. ledae, O. mirinensis, O. piquava and O. perugiae) by having the following combination of characters: teeth of the outer row on dentary and premaxilla shorter than those in the inner row (vs. teeth of outer row larger than those of inner row or teeth of outer and inner rows of equal size); origin of dorsal fin positioned over or posterior to anus (vs. anterior to anus); and 7 to 9 longitudinal scale rows above left and right lateral bands. It differs from O. bicudo, O. ledae, O. mirinensis, and O. piquava by having 19-25 lower branch gill rakers (vs. 26-29 in O. ledae, 24-29 in O. mirinensis, 25-31 in O. bicudo, and 27-28 in O. piquava); and from O. perugiae by the differences in the snout length (35.6-39.5, mean 37.7 vs. 28.6-37.4%, mean 32.2 of HL), and the distance between snout tip and posterior angle of labial ligament (31.3 -37.0, mean vs. 23.6 -33.1%, mean 28.2 of HL (Ref. 116661).
Collected from reservoirs or immediately downstream of three Hydroelectric Power Plants of the rio Uruguay basin (Itá, Machadinho and Monjolinho). Occurs sympatrically with O. bonariensis (Valenciennes) and O. humensis de Buen in the upper rio Uruguay (Ref. 116661).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Wingert, J.M., J. Ferrer and L.R. Malabarba, 2017. Review of the Odontesthes perugiae species group from Río de La Plata drainage, with the description of a new species (Atherinomorpha: Atherinopsidae). Zootaxa 4250(6):501-528. (Ref. 116661)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00275 - 0.01321), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
