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Gila robusta Baird & Girard, 1853

Roundtail chub
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Gila robusta
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United States (contiguous states) country information

Common names: Roundtail chub, White river chub
Occurrence: native
Salinity: freshwater
Abundance: common (usually seen) | Ref: Page, L.M. and B.M. Burr, 1991
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Colorado River drainage in Wyoming, Colorado, Utah, New Mexico and Arizona (Ref. 86798). Four subspecies were previously recognized: G. r. jordani in Pluvial White River, Nevada; G. r. seminuda in Virgin River in Utah, Nevada and Arizona; G r. grahami in Gila River in New Mexico and Arizona; G. r. robusta in rest of of USA range (Ref. 5723). The population in White River , Nevada is protected as Gila robusta jordani, an endangered subspecies (Ref. 86798). Status of threat: vulnerable. Criteria: 1,3 (http://fisc.er.usgs.gov/afs/). Gila robusta jordani: endangered; status same as 1989. Criteria: 1,4,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

Gila nevadská, Jäme gilaturb, 粗壮骨尾鱼, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Laviniinae
Etymology: Gila: A river flowing from SW Mejico to south Arizona.
  More on authors: Baird & Girard.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の漂泳性.   Subtropical; 44°N - 28°N

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

North America: Colorado River drainage in Wyoming, Colorado, Utah, New Mexico and Arizona, USA (Ref. 86798); also Rio Yaqui south to Rio Piaxtla in northwestern Mexico (Ref. 5723).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 43.0 cm TL オス/雌雄の選別がない; (Ref. 5723); common length : 30.0 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大記録サイズ: 8 年 (Ref. 12193)

簡単な記述 検索表 | 形態学 | 形態計測学

背鰭 (合計) : 9; 臀鰭: 9. Body deep and compressed. Head flat. Caudal peduncle slender. Caudal fin large and forked. Angle along base of the anal fin continues into the middle of the caudal fin. Mouth terminal, extending to front of eye. Dark olive-gray above, silver side. Breeding male may develop red or orange on lower half of cheek and paired-fin bases; Lateral line with 71-99 scales, usually more than 78. Dorsal and anal fins with 9 rays. First gill arch with 10 or more rakers. Pharyngeal teeth 2,5-4,2 (Ref. 86798).

生物学     用語集 (例 epibenthic)

Inhabits rocky runs, sometimes pools, of creeks and small to large rivers as well as impoundments. May hybridize with Gila cypha throughout their shared range except in Yampa River (Ref. 86798).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCNのレッドリストの状況は (Ref. 130435)

  攻撃されやすい (VU) (A2ce); Date assessed: 07 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00455 - 0.02896), b=3.03 (2.81 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  2.0   ±0.2 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  手段, １．４年～４．４年の倍増期間の最小個体群 (tmax=8).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100).