分類 / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335); amome: The specific name amome is a Guaraní word, meaning once in a while, rare. This is in references to the low occurrence of the specimens of this species in the localities where they were captured..
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Subtropical
South America: Río Uruguay basin, Misiones, Argentina.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 12.5 cm SL オス/雌雄の選別がない; (Ref. 99820)
簡単な記述
形態学 | 形態計測学
背鰭 (合計): 12; 脊つい: 35. Oligosarcus amome can be distinguished from all congeners except O. platensis and O. itau by having two conspicuous series of teeth on the premaxilla. It differs from O. platensis in having premaxillary teeth in the outer series pentacuspidate (vs. tricuspidate); premaxillary inner series with five teeth penta to heptacuspidate (vs. bi to pentacuspidate); ten to eleven maxillary teeth (uni to pentacuspidate) (vs. vs. 17 teeth (uni to tricuspidate); dentary teeth uni to heptacuspidate (vs. uni to pentacuspidate); 20-23 branched anal-fin rays (vs. 27); 39-41 lateral line scales (vs. 44); and 14-16 predorsal scales (vs. 24).
Oligosarcus amome can be diagnosed from O. itau in having premaxillary teeth in the outer series pentacuspidate (vs. tricuspidate); 39-41(vs. 41-42) scales on lateral line, and 14-16 (vs. 16-17) predorsal scales. It can be further distinguished from O. itau by following morphometric characters: predorsal distance (51.4-53.5 vs. 54.7-57.0% SL); body depth (32.0-34.0 vs. 36.3-37.5% SL); pectoral-fin length (18.6-20.7 vs. 22.7-23.9% SL); pelvic-fin length (14.5-16.2 vs. 18.2-20.0% SL); pectoral to pelvic-fin distance (24.1-25.7 vs. 19.7-20.1% SL); head length (26.7-27.8 vs. 28.7-30.8% SL); peduncle depth (10.5-11.4 vs. 12.6-13.2% SL); peduncle length (10.5-12.0 vs. 14.9-16.0% SL); eye diameter (26.9-29.3vs. 31.6-33.2% HL); and snout length (27.5-29.9 vs. 23.9-24.6% HL). In addition to the presence of two series of teeth on the premaxilla, Oligosarcus amome is distinguished from O. brevioris, O. jacuiensis, O. jenynsii, and O. oligolepis, occurring in the río Uruguay basin, by several characters. It is distinguished from O. brevioris, O. jacuiensis, and O. jenynsii by having 17-18 circumpeduncular scales (vs. 21-23, 21-25, and 12-16 respectively), 39-41 lateral line scales (vs. 47-56, 55-65, and 54-63 respectively), and 3 ectopterygoid teeth (vs. 7-18, 10-20, and 12-16, respectively). It differs clearly from O. oligolepis by having 17-18 circumpeduncular scales (vs. 25-27), 39-41 lateral line scales (vs. 72-79), and 3 ectopterygoid teeth (vs. 14-16). It is distinguished from O. pintoi in having 20-23 (vs. 24-28) branched anal fin-rays; 10-11 (vs. 15-23) maxillary teeth; 3 (vs. 5-14) ectopterygoid teeth; and penta to heptacuspidate (vs. all tricuspidate premaxillary teeth) (Ref. 99820).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Almirón, A., J. Casciotta, L. Piálek, K. Doubnerová and O. Říčan, 2015. Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina. Zootaxa 3915(1):581-590. (Ref. 99820)
Human uses
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精卵の集合体生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ(食中毒の名前)速度泳ぐ 型式カマOtoliths脳視覚
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インターネットの情報源
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=0.01000 (0.00444 - 0.02253), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.9 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).