Exposure of fish to biologically treated bleached-kraft effluent. 1. Biochemical, physiological and pathological assessment of rocky mountain whitefish (prosopium williamsoni) and longnose sucker (catostomus catostomus)

Hybrids between longnose sucker (Catostomus catostomus) and white sucker (C. commersoni), identified on the basis of intermediacy in several scale counts and in morphometric data, are recorded for the first time from Canada. The weakening of isolating mechanisms permitting hybridization was attributed to environmental factors, particularly species introduction and habitat disturbance. There was no evidence of swamping.

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Myxobolid parasites (Myxozoa: Myxobolidae) infecting fishes of western Montana, with notes on histopathology, seasonality, and intraspecific variation

Canadian Journal of Zoology ◽

10.1139/z89-274 ◽

1989 ◽

Vol 67 (8) ◽

pp. 1915-1922 ◽

Cited By ~ 16

Author(s):

Lawrence G. Mitchell

Keyword(s):

Connective Tissue ◽

Western Montana ◽

Infection Prevalence ◽

Tissue Proliferation ◽

Prosopium Williamsoni ◽

Catostomus Macrocheilus ◽

Redside Shiner ◽

Richardsonius Balteatus ◽

Cyst Rupture ◽

Longnose Sucker

Cypriniform and salmonid fishes of the Columbia River drainage of western Montana harbor five members of the myxozoan family Myxobolidae. Myxobolus muelleri inhabits Ptychocheilus oregonensis (northern squawfish), Mylocheilus caurinus (peamouth), Richardsonius balteatus (redside shiner), and Catostomus macrocheilus (largescale sucker). Cysts appeared in gills, musculature, subcutis, and visceral mesenteries. Unencysted spores infiltrated mesenteries and viscera. Spore size and shape in the various tissues and hosts were highly varied. Muscle and subcutaneous cysts were associated with connective tissue proliferation and muscle degeneration; cyst rupture was associated with diffuse inflammation and rodlet cell proliferation. Infection prevalence in muscles and kidneys was high in adult and juvenile hosts (78–100%) throughout the year. Seasonal prevalence of gill and subcutaneous infections fluctuated markedly. Cysts of Myxobolus dujardini occurred in gills of the northern squawfish, peamouth, and redside shiner. Unicauda sp. was found in the eye capsule, gall bladder, mesenteries, and kidney of northern squawfish. Henneguya zschokkei occurred in intermuscular connective tissue of Prosopium coulteri (pygmy whitefish) and Prosopium williamsoni (mountain whitefish). Myxobolus sp. occurred in the gills of Catostomus catostomus (longnose sucker).

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A Biochemical and Cytological Study of the Longnose Sucker (Catostomus catostomus) and Large and Dwarf Forms of the White Sucker (Catostomus commersoni)

Journal of the Fisheries Research Board of Canada ◽

10.1139/f71-258 ◽

1971 ◽

Vol 28 (11) ◽

pp. 1745-1748 ◽

Cited By ~ 3

Author(s):

R. J. Beamish ◽

H. Tsuyuki

Keyword(s):

Cytological Study ◽

White Sucker ◽

Age At Maturity ◽

Catostomus Commersoni ◽

Muscle Lactate ◽

Early Maturing ◽

Catostomus Catostomus ◽

Lactate Dehydrogenases ◽

Longnose Sucker

White (Catostomus commersoni) and longnose (C. catostomus) suckers possess diploid complements of 98 chromosomes, including metacentrics, submetacentrics, and acrocentrics. White sucker karyotypes differ consistently from longnose karyotypes by the presence of an additional four metacentrics. The karyotypes of the size and age at maturity of variants of white suckers were indistinguishable. Biochemically, longnose and white suckers are distinctive with respect to muscle myogens, hemoglobins, serum esterases, serum and muscle lactate dehydrogenases, and serum transferrins. The last group of proteins provides a clear genetic separation of the large-sized, late-maturing, and the dwarf, early-maturing white suckers. The former is polymorphic for serum transferrins.

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Redescription of Anonchohaptor anomalum Mueller 1938 and a Description of Icelanonchohaptor fyviei n.sp. (Monogenoidea: Dactylogyridae)

Journal of the Fisheries Research Board of Canada ◽

10.1139/f74-242 ◽

1974 ◽

Vol 31 (12) ◽

pp. 1863-1866 ◽

Cited By ~ 4

Author(s):

Alex O. Dechtiar ◽

William A. Dillon

Keyword(s):

Host Record ◽

New Host ◽

New Host Record ◽

Catostomus Catostomus ◽

Longnose Sucker

Icelanonchohaptor fyviei n. sp., from the gills of quillback, Carpiodes cyprinus (LeSueur), is described and Anonchohaptor anomalum Mueller 1938 is redescribed. A new host record, longnose sucker, Catostomus catostomus (Forster), is reported for Anonchohaptor anomalum Mueller 1938.

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Biology of the Leech Actinobdella inequiannulata Moore, 1901 (Annelida: Hirudinea: Rhynchobdellida: Glossiphoniidae), Parasitic on the White Sucker, Catostomus commersoni Lacepède, 1803, and the Longnose Sucker, Catostomus catostomus Forster, 1773, in Algonquin Provincial Park, Ontario, Canada

Comparative Parasitology ◽

10.1654/4064 ◽

2003 ◽

Vol 70 (2) ◽

pp. 120-127 ◽

Cited By ~ 3

Author(s):

Donald J. Klemm ◽

Bruce A. Daniels ◽

William E. Moser ◽

R. J G. Lester

Keyword(s):

White Sucker ◽

Catostomus Commersoni ◽

Catostomus Catostomus ◽

Longnose Sucker ◽

Provincial Park

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Food of the Rocky Mountain Whitefish Prosopium williamsoni (Girard)

Journal of the Fisheries Research Board of Canada ◽

10.1139/f40-013 ◽

1940 ◽

Vol 5a (2) ◽

pp. 131-137 ◽

Cited By ~ 5

Author(s):

J. L. McHugh

Keyword(s):

Aquatic Insect ◽

Rocky Mountain ◽

Insect Larvae ◽

Prosopium Williamsoni ◽

Food Fish ◽

Aquatic Insect Larvae

A study of 365 stomachs indicates the chief food to be aquatic insect larvae and other bottom forms. The type of food varies with locality, age, and season, depending on availability. The whitefish is of value as a game and food fish, but it may compete with trout and salmon for food, and may also destroy the eggs and young of these species.

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