Philometroides huronensis n.sp. (Nematoda: Dracunculoidea) of the common white sucker (Catostomus commersoni) from Lake Huron, Ontario

1976 ◽  
Vol 54 (3) ◽  
pp. 369-376 ◽  
Author(s):  
Leslie S. Uhazy
Keyword(s):  
The Body ◽  
Lake Huron ◽  
Swim Bladder ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Size And Shape ◽  
Cuticular Ornamentation ◽  
The Common ◽  
Gravid Females ◽  
A New Species

A new species of nematode, Philometroides huronensis n.sp., is described from the fins and peritoneum around the swim bladder of the common white sucker (Catostomus commersoni). The gravid females and the males of this species are readily distinguishable from those of other members of the genus by the body size, cuticular ornamentation, caudal ventrolateral hypodermal extensions, size and shape of first-stage larva, length of spicules, size and shape of gubernaculum, and location in the host. Measurements of mature and subgravid females are presented.

Biology of Philometroides huronensis (Nematoda: Dracunculoidea) in the white sucker (Catostomus commersoni)

1977 ◽  
Vol 55 (9) ◽  
pp. 1430-1441 ◽  
Author(s):  
Leslie S. Uhazy
Keyword(s):  
Age Groups ◽  
Early Spring ◽  
Lake Huron ◽  
Valid Species ◽  
Pleistocene Glaciation ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Southern Ontario ◽  
One Year ◽  
Gravid Females

White suckers (Catostomus commersoni (Lacépède)) collected from various locations in southern Ontario were examined for Philometroides huronensis Uhazy, 1976. Stages of the parasite were recovered from the peritoneum around the swim bladder, bases of the fins, and the fins. Prevalence of infections was high and intensities relatively low. The parasite was less prevalent in longnose (Catostomus catostomus (Forster)) and redhorse (Moxostoma macrolepidotum (LeSucur)) suckers collected from the same area.Males, female fourth-stage larvae, uninseminated. inseminated, subgravid, and gravid females were recovered from fish collected from southern Lake Huron. Prevalence was 83 to 100% throughout the year and showed no significant seasonal trend. Numbers of worms recovered ranged from 1 to 32 per fish; 77% were infected with from 1 to 7 worms. Intensities of infections varied significantly with season, being highest during fall, winter, and early spring. All age groups of white suckers were infected; however, intensity did not vary significantly with host age. Although P. huronensis was highly prevalent throughout the year and from one year to the next, the life cycle was completed in a single year.The evolution of three valid species in the Philometrinae from the white sucker in North America is proposed, based on the evidence that before Pleistocene glaciation there were three separate forms of white sucker.

Some remarks on the occurrence and development of philometrid nematodes infecting the white sucker, Catostomus commersoni Lacépède (Pisces: Catostomidae), in Ontario

1982 ◽  
Vol 60 (3) ◽  
pp. 443-451
Author(s):  
K. Molnar ◽  
G. L. Chan ◽  
C. H. Fernando
Keyword(s):  
Life Cycle ◽  
Developmental Stages ◽  
Abdominal Cavity ◽  
Swim Bladder ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Laurel Creek

During a study on the parasitofauna of white sucker (Catostomus commersoni) in Laurel Creek, Ontario, three philometrid nematodes were found. Gravid and subgravid females completing the life cycle occurred very infrequently (Philometroides huronensis: 4.3%, Philometroides nodulosa: 1.6%, Philometra kobuleji: 1.1%). In comparison, males and retarded females infected the eyeball and the peritoneum around the swim bladder very often (43.1 and 31.6% in total, respectively). Less frequently, developmental stages were found in the abdominal cavity. Specimens found in the eyeball were identified as belonging to P. nodulosa, while the swim bladder forms could belong to P. huronensis or to P. kobuleji. The eyeball and the peritoneum around the swim bladder are regarded as refuges for retarded forms, where they can survive for more than a year. No evidence was found of a direct cause of retardation.

Sulphate Entry into Soft-Water Fish (Salmo Gairdneri, Catostomus Commersoni) During Low Ambient pH Exposure

1987 ◽  
Vol 133 (1) ◽  
pp. 87-109
Author(s):  
HELVE HŌBE
Keyword(s):  
White Muscle ◽  
Soft Water ◽  
The Body ◽  
Salmo Gairdneri ◽  
Ion Transfer ◽  
White Sucker ◽  
Catostomus Commersoni ◽  
Transfer Rates ◽  
Water Fish ◽  
Body Compartments

The physiological responses of white sucker (Catostomus commersoni Lacépede) and rainbow trout (Salmo gairdneri Richardson), both reared in natural soft water, to a reduction in ambient pH were compared by simultaneous analyses of ion levels in various body compartments (plasma, muscle, whole fish) and net ion transfer rates. Following 24 h of exposure to acidified (H2SO4) natural soft-water, both species displayed a net influx of protons (or loss of base) and net losses of body Na+, Cl−, Ca2+, Mg2+, K+ and phosphate. The magnitude of ion loss from plasma was twice as large in the trout as in the sucker. Shifts of fluid from the extracellular to the intracellular fluid occurred in both species. Losses of ions from epaxial white muscle were small relative to intracellular ion losses from the rest of the body in both species. The most notable finding was the entry of sulphate into the body fluids of both species, accumulating primarily in plasma and in the intracellular compartment of sucker and trout, respectively. The possible mechanism(s) and implications of sulphate influx into fish are discussed.

Gastrointestinal nematodes of freshwater fish from Pilcomayo River, Argentina, including description of a new species of Procamallanus (Spirocamallanus)

Zootaxa ◽  
2020 ◽  
Vol 4810 (3) ◽  
pp. 468-480
Author(s):  
GERALDINE RAMALLO ◽  
FABIANA CANCINO ◽  
ANA LÍA RUIZ ◽  
LORENA GISELA AILÁN-CHOKE
Keyword(s):  
Freshwater Fish ◽  
Buccal Capsule ◽  
Gastrointestinal Nematodes ◽  
The Body ◽  
Parasitic Nematodes ◽  
La Paz ◽  
Unknown Species ◽  
Cuticular Ornamentation ◽  
New Hosts ◽  
A New Species

Helminthological examination of viscera of six freshwater fish species, collected from Misión la Paz, Pilcomayo River, Province of Salta, Argentina, revealed the presence of five species of parasitic nematodes belonging to the Camallanidae, Cystidicolidae, Cucullanidae and Anisakidae  The material also contained one unknown species, Procamallanus (Spirocamallanus) tomsici sp. nov. collected from Pimelodus albicans, Pygocentrus nattereri and Hoplias misionera. This species is distinguished from its congeners all over de world by possessing six pores distinctly surrounding the mouth aperture, a buccal capsule with 3–4 spiral thickenings complete, females possessing a lateral cuticular ornamentation along the body, and two pairs of preanal and three pairs of postanal papillae in males. The findings represent new hosts and geographical records. 

Trichodina algonquinensis, a new species of peritrich ciliate from Ontario freshwater fish, and observations on its transmission

1983 ◽  
Vol 61 (5) ◽  
pp. 1159-1164 ◽  
Author(s):  
Lianxiang Li ◽  
Sherwin S. Desser
Keyword(s):  
Perca Flavescens ◽  
Lateral View ◽  
The Body ◽  
Semotilus Atromaculatus ◽  
Mean Diameter ◽  
The Common ◽  
The Mean ◽  
Golden Shiners ◽  
Creek Chub ◽  
A New Species

Trichodina algonquinensis n. sp. is described from the urinary bladder and ureters of the perch (Perca flavescens) and the common shiner (Notropis cornutus) from Lake Sasajewun, Algonquin Park, Ontario. The ciliate is hat shaped, flattened, and ellipsoidal in lateral view. The mean diameter of the oral portion of the body is 88.4 μm (58.5–123.5 μm; n = 21) and of the adhesive disc, 54.9 μm (42.9–57.2 μm; n = 30). It has 38 (35–42; n = 17) denticles, a horseshoe-shaped macronucleus, a round to ovoid micronucleus situated near the end of one arm of the macronucleus, and the oral groove spiral is 540°. Experiments indicate that in aquaria the ciliate is readily transmitted from perch to common shiners and golden shiners (Notemigonus crysoleucas) but not to creek chub (Semotilus atromaculatus).

A new species of Philometra (Nematoda, Philometridae) from the gonads of the rock hind Epinephelus adscensionis (Osteichthyes) from the southern Gulf of Mexico

2007 ◽  
Vol 52 (4) ◽  
Author(s):  
František Moravec ◽  
Guillermo Salgado-Maldonado
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Body Length ◽  
Gravid Female ◽  
Marine Fishes ◽  
The Body ◽  
Southern Gulf Of Mexico ◽  
Gravid Females ◽  
Original Species ◽  
A New Species

AbstractA new species of parasitic nematode, Philometra mexicana sp. nov. (Philometridae), is described based on males and females parasitizing the gonads of the marine perciform fish (rock hind) Epinephelus adscensionis (Osbeck) (Serranidae) off the coast of the southern Gulf of Mexico (reefs of the Enmedio Island, Veracruz), Mexico, collected on 10 April 1990. The new species is characterized mainly by very small males (body length 1.63–1.86 mm) with equally long, needle-like spicules (length 90–120 μm) and the gubernaculum (57–66 μm) without the usual dorsal barb on the distal end, the body length of gravid females (178–230 mm), the presence of a well-developed anterior bulbous inflation on the female oesophagus, and by the length of the first-stage larvae (420–435 μm). A comparison with other congeners parasitizing the gonads of marine fishes is provided. The cephalic end of the gravid female of Philometra margolisi Moravec, Vidal-Martínez et Aguirre-Macedo, 1995, another related species from the gonads of Epinephelus [E. morio (Valenciennes)] in Mexico, has been studied by SEM for the first time; it confirms the arrangement of the cephalic papillae as reported in the original species description. Philometra mexicana is the fifth species of Philometra reported from the gonads of marine fishes in the West Atlantic region.

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