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).

scholarly journals Trichodina magna Van As and Basson, 1989 (Ciliophora: Peritrichia) from cultured Nile tilapia in the state of Santa Catarina, Brazil

2008 ◽  
Vol 68 (1) ◽  
pp. 169-172 ◽  
Author(s):  
ML. Martins ◽  
L. Ghiraldelli
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Original Description ◽  
The State ◽  
The Body ◽  
Fish Ponds ◽  
Santa Catarina ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Mean Diameter ◽  
The Mean

Specimens of Trichodina magna Van As and Bassson, 1989 (Ciliophora: Peritrichia) from the Nile tilapia Oreochromis niloticus collected from October 2004 to June 2005 in fish ponds situated in three regions of Santa Catarina State, Brazil are described here. Wet smears of skin and gills were prepared in the field, air dried, impregnated with Klein’s dry silver method and Giemsa’s solution. From a total of 146 examined fish, 36 were parasitized on the skin, 14 in the gills and 33 on the skin and gills, simultaneously. The mean diameter of the body of the specimens of T. magna was 84.3 ± 12.6 µm, adhesive disc 60.7 ± 10.0 µm, denticulate ring, 38.3 ± 7.4 µm, consisting of 26 (23 to 29) denticles. The only distinguishable difference from the original description was the fact that the ray of the denticle is anteriorly directed and does not extend over the y + 1 axis.

Some ectoparasitic trichodinids from Atlantic cod, Gadus morhua L., with a description of Trichodina cooperi n.sp.

1989 ◽  
Vol 67 (7) ◽  
pp. 1793-1800 ◽  
Author(s):  
S. L. Poynton ◽  
J. Lom
Keyword(s):  
Nova Scotia ◽  
Body Surface ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Geographic Range ◽  
The Body ◽  
Wild Fish ◽  
Eastern Canada ◽  
Mean Diameter ◽  
The Mean

Trichodina murmanica Polyanskiy, 1955 (= Trichodina domerguei subsp. saintjohnsi Lom and Laird, 1969) and Trichodina cooperi n.sp. were commonly encountered on skin and fins of Atlantic cod, Gadus morhua L., near Halifax, Nova Scotia, Canada. A third species of Trichodina, probably new, was recorded from the skin of one fish. This is believed to be the first report of the genus Trichodina from the body surface of gadoid fish from eastern Canada, and the known geographic range of T. murmanica is extended. Trichodina cooperi n.sp. has an adoral ciliary spiral of 370–380° and is relatively large, the mean diameter of the body is 110 μm, of the adhesive disc (with dark center), 95 μm, and of the denticulate ring, 59 μm. The denticulate ring consists of 24–29 denticles (usually 27), with 7–9 radial pins per denticle. Each denticle has a broad blade, a large central part, and a slightly curved thorn of moderate to broad width, with a central rib when mature. The thorn is approximately twice the length of the blade. The horseshoe-shaped macronucleus has a diameter of 80.0 μm and the micronucleus is in the +y position. Trichodina spp. infected 26% of 39 wild fish 20 to < 60 cm long. Most wild fish yielded less than five ciliates per 24 × 50 mm smear.

Some little-known and new protozoan parasites of fish from Lake Sasajewun, Algonquin Park, Ontario

1989 ◽  
Vol 67 (6) ◽  
pp. 1372-1379 ◽  
Author(s):  
Jiří Lom ◽  
Sherwin S. Desser ◽  
Iva Dyková
Keyword(s):  
Tissue Specificity ◽  
Polar Filament ◽  
Lepomis Gibbosus ◽  
Renal Tubules ◽  
Protozoan Parasites ◽  
Sporocyst Residuum ◽  
Semotilus Atromaculatus ◽  
Ictalurus Nebulosus ◽  
The Common ◽  
Creek Chub

One hundred and twenty-six fish of eight species, taken from Lake Sasajewun, Ontario, were examined for protozoan parasites. Detailed descriptions are given for Sphaerospora diminuta Li and Desser from the pumpkinseed, Lepomis gibbosus, and for Goussia degiustii Molnar and Fernando from the common shiner, Notropis cornutus. Oocysts of G. degiustii are pleomorphic and exhibit low tissue specificity. Goussia freemani Molnar and Fernando from the kidney of N. cornutus is tentatively synonymized with Goussia leucisci Shulman and Zaika. Two new species of Sphaerospora are described: Sphaerospora paulini n.sp. from the renal tubules of creek chub, Semotilus atromaculatus, with spherical spores 8.1 (8.0–8.5) μm in diameter, containing ovoid polar capsules 2.8 (2.5–3.4) × 2.6 (2.5–3.0) μm, and polar filament with 4–5 coils; and Sphaerospora hankai n.sp. from the renal tubules of the brown bullhead, Ictalurus nebulosus, with subspherical spores 6.1 (5.4–6.6) × 6.0 (5.4–6.5) μm, unequal subspherical polar capsules (larger, 2.8 (2.5–3.1) × 2.7 (2.3–2.9) μm; smaller, 2.4 (2.1–2.6) × 2.0 (1.9–2.2) μm), and polar filament with 4–5 coils in larger capsule, 3–4 coils in smaller capsule. Eimeria patersoni n.sp. is described from the kidney, spleen, and liver of L. gibbosus. Oocysts are subspherical (11.9 × 10.6), sporocysts ellipsoidal (10.4 (9.9–11.2) × 3.5 (2.6–4.0) μm), and sporozoites stubby (3.6 × 2.0 μm); sporocyst residuum has 1–3 large granules.

A NEW SPECIES OF MONOGENETIC TREMATODE, OCTOMACRUM SEMOTILI, FROM THE CREEK CHUB, SEMOTILUS ATROMACULATUS (MITCHILL), FROM ALGONQUIN PARK LAKES

1966 ◽  
Vol 44 (5) ◽  
pp. 821-824 ◽  
Author(s):  
Alex Dechtiar
Keyword(s):  
New Species ◽  
Semotilus Atromaculatus ◽  
Fourth Species ◽  
Creek Chub ◽  
A New Species

A new species of monogenetic trematode, Octomacrum semotili, on the gills of the creek chub, Semotilus atromaculatus, is described. This is the fourth species in the genus Octomacrum Mueller, 1934.

scholarly journals Pemanfaatan Ekstrak Etanol Daun Gulinggang (Cassia alata Linn) sebagai Bahan Antijamur pada Produk Sabun Mandi (Utilization of Ethanol Extract of Gulinggang (Cassia alata Linn) Leaves as Antifungal in Body Soap Bar)

2017 ◽  
Vol 9 (2) ◽  
pp. 57-64
Author(s):  
Nurmilatina Nurmilatina ◽  
I Dewa Gede Putra Prabawa
Keyword(s):  
Candida Albicans ◽  
Ethanol Extract ◽  
The Body ◽  
Fungal Resistance ◽  
Solvent Ratio ◽  
Cassia Alata ◽  
Mean Diameter ◽  
Antifungal Substances ◽  
The Mean ◽  
Organoleptic Parameters

Gulinggang (Cassia alata Linn) leaves extract has secondary metabolite compounds such as alkaloids, saponins, tannins, phenolic, triterpenoids, quercetin and steroids. These compounds are very useful, for example as an antifungal substances. The objective of this study is to utilize gulinggang leaves extract to produce antifungal bath soap. Gulinggang leaves were extracted by maceration method using ethanol solvent ratio 1:4 for 3 days. This extract was applied to the soap base formula using variations 0%, 5%, 10% and 20%. The organoleptic parameters of the body soap bar, such as aroma, texture, color, total panelist acceptance, and also the pH were tested. The inhibitory test was performed using Candida albicans fungus. The results showed that 5% of gulinggang leaves extract on soap gave the best result with organoleptic value 3.70; pH 9.76 and the mean diameter of the fungal resistance was 15.00 mm.Keywords: antifungal, Candida albicans, Cassia alata Linn, extraction, ethanol

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.

A new species of the commercially harvested jellyfish Crambionella (Scyphozoa) from central Java, Indonesia with remarks on the fisheries

2014 ◽  
Vol 95 (3) ◽  
pp. 471-481 ◽  
Author(s):  
Jun Nishikawa ◽  
Susumu Ohtsuka ◽  
Mulyadi ◽  
Nova Mujiono ◽  
Dhugal J. Lindsay ◽  
...  
Keyword(s):  
New Species ◽  
The Body ◽  
Commercial Fisheries ◽  
Body Colour ◽  
Central Java ◽  
Unknown Species ◽  
Specific Variation ◽  
The Mean ◽  
A New Species ◽  
I Gene

We describe a new species of Crambionella, C. helmbiru, from central Java, Indonesia. The combination of the mean number of lappets per octant (14), presence of foliaceous appendages amongst frills on oral-arms, absence of tubercles on the velar lappets, proportion of terminal club length to oral-arm length (0.28), and the body colour distinguish this species from three previously described congeners. In addition, the analysis of partial sequences of the cytochrome c oxidase subunit I gene indicate substantial genetic differences from both Crambionella orsini and Crambionella stuhlmanni, supporting the validity of this new species. A combination of morphological and genetic approaches determined that the remarkable differences in exumbrellar colours observed in specimens are simply intra-specific variation. Surprisingly, this species has been commercially harvested for more than 20 years and is well-known to the local people in the region, yet it had remained unknown to science until this point. The commercial fisheries targeting this formerly unknown species are also described in detail.

scholarly journals Resveratrol attenuates malathion-induced liver damage by reducing oxidative stress

2019 ◽  
Vol 11 (03) ◽  
pp. 212-219
Author(s):  
Cyrus Jalili ◽  
Mohammad Hosein Farzaei ◽  
Shiva Roshankhah ◽  
Mohammad Reza Salahshoor
Keyword(s):  
Liver Enzymes ◽  
Thiobarbituric Acid ◽  
The Body ◽  
Male Rats ◽  
Control Group ◽  
Organophosphate Insecticide ◽  
Nitrite Oxide ◽  
Reducing Ability ◽  
Mean Diameter ◽  
The Mean

Abstract BACKGROUND: Malathion is an organophosphate insecticide which disrupts the antioxidant system of the body. Resveratrol is a phytoestrogen and antioxidant of the red grape. AIM AND OBJECTIVE: This study was designed to evaluate the effects of resveratrol against toxic effects of malathion to the liver of rats. MATERIALS AND METHODS: In this study, 48 male rats were randomly assigned to 8 groups: control normal (saline) and malathion control-treated groups (50 mg/kg), resveratrol groups (2, 8, and 20 mg/kg), and malathion + resveratrol-treated groups (2, 8, and 20 mg/kg). Treatments were administered intraperitoneally daily for 14 days. Griess technique was assessed for determined serum nitrite oxide level. Aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase concentrations were determined for liver functional disturbances. In addition, thiobarbituric acid reactive species, antioxidant capacity, the diameter of hepatocytes, and the central hepatic vein (CHV) were investigated. RESULTS: Malathion administration significantly improved liver malondialdehyde (MDA) and nitrite oxide level, the mean diameter of CHV and hepatocyte, and liver enzymes and decreased tissue ferric-reducing ability of plasma (FRAP) level compared to the normal control group (P < 0.01). The resveratrol and resveratrol + malathion treatments at all doses significantly reduced the mean diameter of hepatocyte and CHV, liver enzymes, kidney MDA, and nitrite oxide levels and increased tissue FRAP level compared to the malathion control group (P < 0.01). CONCLUSION: It seems that resveratrol administration improved liver injury induced by malathion in rats.

Histological and Histometrical Study of the Protective Role ofα-Tocopherol against Sodium Arsenite Toxicity in Rat Ovaries

2014 ◽  
Vol 20 (4) ◽  
pp. 1167-1179 ◽  
Author(s):  
Maryam Ghandi Zadeh Dezfouli ◽  
Samira Eissazadeh ◽  
Sayed Mohammad Ali Shariat Zade
Keyword(s):  
Corpus Luteum ◽  
Granulosa Cells ◽  
Sodium Arsenite ◽  
Ovarian Tissue ◽  
Control Level ◽  
Protective Role ◽  
Environmental Pollutant ◽  
The Body ◽  
Mean Diameter ◽  
The Mean

AbstractThis study examines histometrical changes induced by sodium arsenite (SA), as an environmental pollutant, and investigates the protective effect ofα-tocopherol on ovaries of SA-treated rats during the prenatal stage until sexual maturity. Rats were classified into groups: control, SA (8 ppm/day),α-tocopherol (100 ppm/day), and SA+α-tocopherol. Treatment was performed from pregnancy until maturation when the rats and ovaries were weighed. The Cavalieri method was used to estimate volume of the ovaries, cortex, medulla, and corpus luteum. The mean diameter of oocytes, granulosa cells, and nuclei were measured and volume was estimated using the Nucleator method. The number of oocytes and thickness of the zona pellucida (ZP) were determined using an optical dissector and orthogonal intercept method, respectively. SA reduced the body and ovary weight, the number of secondary, antral and Graafian oocytes, volume of the ovaries, cortex, medulla and corpus luteum, mean diameter and volume of oocytes in primordial and primary follicles, mean diameter and volume of oocyte nuclei in all types of follicles, and mean thickness of the ZP in secondary and antral follicles. Also, the mean diameter and volume of granulosa cells and their nuclei in antral and Graafian follicles decreased significantly. Vacuolization and vascular congestion in the corpus luteum and an increase in the number of atretic oocytes were seen in the SA group. Most of these parameters were unchanged from the control level in the SA+α-tocopherol group. It was concluded thatα-tocopherol supplementation reduced the toxic effects of SA exposure on ovarian tissue in rats.

Buoyancy Response to Changes in Water Velocity and Its Function in Creek Chub (Semotilus atromaculatus)

1978 ◽  
Vol 35 (3) ◽  
pp. 295-299 ◽  
Author(s):  
Gordon Berezay ◽  
John H. Gee
Keyword(s):  
Angle Of Attack ◽  
Water Velocity ◽  
The Body ◽  
Bladder Volume ◽  
Water Current ◽  
Acclimation Temperature ◽  
Small Fish ◽  
Swim Bladder ◽  
Semotilus Atromaculatus ◽  
Creek Chub

Creek chub (Semotilus atromaculatus) reduce buoyancy by decreasing swim-bladder volume when exposed to water current. Fish were near neutral buoyancy (0.956–0.997 mL∙g−1) in still water but in current small fish (< 73 mm) were more buoyant (0.668 mL∙g−1) than larger fish (0.540 mL∙g−1). Extent of buoyancy alteration was influenced by acclimation temperature, water velocity, and an interaction of both these factors. Reduction of buoyancy on exposure to water current required 3–6 h and the rate of decrease (0.035–0.068 mL∙g−1∙h−1) was independent of acclimation temperature and water velocity. The hypothesis that creek chub reduce buoyancy when exposed to water current to compensate for the lift created due to deflection of water over the dorsal surface of the body was supported by the following findings. When initially exposed to current, fish lowered the head assuming an angle of attack of 9–12° from horizontal. A horizontal (< 1°) angle of attack was gradually assumed during buoyancy adjustment. Fish acclimated to moderate current for 12 or 24 h tired less readily in strong current (80% took 43 and 44 min, respectively) than those not acclimated or acclimated for 6 h (80% took 33 and 25 min, respectively). Fish induced to swim in still water reduced buoyancy to a similar extent as those in current. Key words: swim-bladder volume change, temperature, hydrodynamic lift, swimming angle of attack, time to fatigue

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