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Aptocyclus ventricosus, Smooth lumpsucker
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Smooth lumpsucker
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Aptocyclus ventricosus
Picture by
Orlov, A.
Teleostei (teleosts) >
Perciformes/Cottoidei
(Sculpins) >
Cyclopteridae
(Lumpfishes) > Liparopsinae
Etymology:
Aptocyclus:
Greek, aptos, -e, -on = visible, tangible + Greek, kyklos = circle (Ref.
45335
)
.
More on author:
Pallas
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range 612 - 1700 m (Ref.
50550
). Temperate; 66°N -
North Pacific: Pusan, Korea north (outside the Sea of Okhotsk) to Providence Bay in the Anadyr Gulf of the Bering Sea, throughout the Aleutian Basin and islands, and southeast to Mathieson Channel, British Columbia, Canada.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 41.0 cm TL male/unsexed; (Ref.
56527
); max. published weight: 2.3 kg (Ref.
56527
)
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 8-9;
Anal
spines
: 0;
Anal
soft rays
: 7 - 9. Brownish gray with dark spots dorsally, muddy gray ventrally. Caudal fin rounded; pectoral fins large and broadly based; pelvic fins modified to form a clinging disc with a thickened margin on the ventral surface of the body (Ref.
6885
). Skin naked without scales and tubercles. First dorsal fin completely embedded under the skin. Disk rudimentary in young, well developed in adults (Ref.
43939
).
Males are said to guard the eggs (Ref.
6885
). Migrate to spawn in littoral waters of Bering Sea in December-June (Ref.
43939
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Eschmeyer, W.N., E.S. Herald and H. Hammann
, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref.
2850
)
IUCN Red List Status (Ref.
130435
)
Not Evaluated
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 2.3 - 4.6, mean 2.8 °C (based on 159 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.7 ±0.38 se; based on food items.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (31 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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