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Salvelinus confluentus, Bull trout : gamefish, aquarium
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Salvelinus confluentus
Picture by
Keeley, E.R.
Teleostei (teleosts) >
Salmoniformes
(Salmons) >
Salmonidae
(Salmonids) > Salmoninae
Etymology:
Salvelinus:
Old name for char; it is the same root of german "saibling" = little salmon (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; benthopelagic. Temperate; 61°N - 39°N
Coastal and mountain streams of Arctic, Pacific, and Missouri River drainages from extreme southern Yukon in Canada to headwaters of Columbia River drainage in northern Nevada, USA, and McCloud River drainage in northern California, USA.
Length at first maturity / Size / Weight / Age
Maturity: L
m
72.0
, range 58 - 86 cm
Max length : 103 cm TL male/unsexed; (Ref.
40637
); common length : 62.5 cm TL male/unsexed; (Ref.
12193
); max. published weight: 14.5 kg (Ref.
4699
)
Occurs in deep pools of large cold rivers and lakes (Ref.
5723
). Most common in high mountainous areas where snowfields and glaciers are present (Ref.
5723
). Rarely anadromous (Ref.
5723
, Ref.
51243
). Lacustrine form matures in lakes and spawns in tributaries, where young reside for one to three years (Ref.
10367
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Page, L.M. and B.M. Burr
, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref.
5723
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(A2e); Date assessed:
01 August 1996
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Gamefish: yes; aquarium: public aquariums
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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=0.00977 (0.00468 - 0.02039), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.7 ±0.57 se; based on food items.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): High vulnerability (62 of 100).
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- 20 July 2016
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