Study on infestations and biodiversity of metazoan parasites in Channa punctatus (Bloch), Mymensingh region

An investigation was conducted on infestation and reviewed biodiversity of metazoan parasites in Channa punctatus of Mymensingh region from July 2013 to June 2014. A total of 235 fish were examined and 9 species of four groups of parasites were recorded. They were (i) Euclinostomum multicaecum Tubangui and Masilungan, 1935 (ii) Euclinostomum heterostomum (Rudolphi, 1809) (iii) Genarchopsis goppo Ozaki, 1925 (iv) Allocreadium handiai Pandey, 1937 (v) Senga ophiocephalina (Tseng, 1933) (vi) Porrocaecum sp. (vii) Ascaridia sp. (viii) Contracaecum sp. (ix) Pallisentis ophiocephali (Thapar, 1930).The maximum (86.67%) prevalence was found in (86.67%) October and minimum (35.00%) in December whereas the maximum mean intensity (10) was observed in June and the minimum (1.42) was recorded from December. The prevalence was observed higher (68.85%) in smaller size of fish and in case of larger fish the prevalence was lower and the value was (53.62%). On the other hand, the mean intensity (5.45) was higher in smaller fish and lower (3.39) in medium sized fish. Both prevalence and mean intensity was found maximum in female fish than male fish. Among the four groups of parasites, infestation of Digenetic trematode is much higher than Nematoda, Cestoda and Acanthocephala. During the study, a list of parasites reported from Channa punctatus of Indian sub-continent was prepared. It was found that 38 species of Digenea, 4 species of Cestoda, 26 species of Nematoda and 5 species Acanthocephala were recorded. The Biodiversity of parasites seemed to be declined day by day. The responsible factors for this declination may be environmental degradation, entry of exotic fish and modernization of aquaculture etc. J Bangladesh Agril Univ 17(3): 409–416, 2019

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Population and seasonal distribution of Procamallanus daccai in Eutropiichthys vacha in Kaptai Lake, Chittagong, Bangladesh

Journal of Helminthology ◽

10.1079/joh2005289 ◽

2005 ◽

Vol 79 (4) ◽

pp. 339-343

Author(s):

A.K.M. Hafizuddin ◽

A.K. Bashirullah

Keyword(s):

Seasonal Distribution ◽

Size Group ◽

Summer Period ◽

Female Fish ◽

Infected Male ◽

Male Fish ◽

Infected Female ◽

Male And Female ◽

Mean Intensity ◽

The Mean

AbstractThe population and seasonal distribution of Procamallanus daccai (Nematoda: Procamallanidae) in Eutropiichthys vacha (Siluridae) from the Kaptai Lake were studied for a period of 20 months during 1986–1987. A total of 208 fish were necropsied and 5652 worms were recovered, of which 2392 were from 87 infected male fish and 3260 were from 89 infected female fish. Prevalence values varied from 50% to 95%. The intensity and abundance of nematodes fluctuated over the study period and are statistically significant (F=14.87, P<0.0001), and showed a seasonal preference for the summer period (F=33.39, P<0.05). The mean intensity was the highest in the smallest size group at 66.3±12.7 which gradually decreased to 4±1.89 in the largest size group. No significant differences were found between parasites from male and female hosts, except in the summer. Male parasites were less abundant in the population. Female worms were grouped into immature, maturing and gravid and all these stages were present throughout the year. The highest occurrence of both immature and gravid P. daccai was found during the months of February to April each year. Peak recruitment seems to occur during this period due to the presence of high quantities of immature worms.

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The helminth community of the sand smelt (Atherina boyeri Risso, 1810) from Lake Iznik, Turkey

Journal of Helminthology ◽

10.1017/s0022149x11000770 ◽

2011 ◽

Vol 87 (2) ◽

pp. 129-134 ◽

Cited By ~ 3

Author(s):

S. Özesen Çolak

Keyword(s):

Food Supply ◽

Parasite Species ◽

Early Spring ◽

The Other ◽

Total Weight ◽

Helminth Community ◽

Metazoan Parasites ◽

Mean Intensity ◽

The Mean ◽

Tylodelphys Clavata

AbstractMetazoan parasites of the sand smelt Atherina boyeri Risso, 1810 in Lake Iznik were studied. A total of 271 specimens of A. boyeri, 208 female and 63 male, mean ( ± SD) total length 8.4 ± 2.2 cm (range 3.1–12.2 cm) and mean total weight 4.7 ± 3.5 g (range 0.1–11.7 g) were examined between June 2008 and May 2009 at monthly intervals. In 33 fish no parasites were found. In the other fish, four parasite species were recorded: Diplostomum sp. (prevalence 39.13%, mean intensity 3.50 ± 3.03); Tylodelphys clavata (prevalence 74.16%, mean intensity 10.41 ± 14.89); Bothriocephalus cf. acheilognathi (prevalence 40.59%, mean intensity 31.83 ± 57.74); and Eustrongylides excisus (prevalence 6.64%, mean intensity 1.16 ± 0.39). The mean abundance of Diplostomum sp., T. clavata and E. excisus was higher during the winter and early spring months. In contrast, the mean abundance of B. cf. acheilognathi was higher in the summer and autumn months. This distribution of the parasites was related to a change in the environment of A. boyeri from the pelagic zone to deeper water at the end of autumn and a change in food supply.

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Digenetic Trematode Parasites in Two Fresh Water Fishes Ophiocephalus Punctatus and Xenentodon Cancila From North West Himalayas

10.21203/rs.3.rs-271485/v1 ◽

2021 ◽

Author(s):

Sukanya Rajput ◽

Seema Langer

Keyword(s):

Fresh Water ◽

Digenetic Trematode ◽

Host Fish ◽

Mean Intensity ◽

North West ◽

Trematode Infection ◽

Xenentodon Cancila ◽

The Mean ◽

Union Territory ◽

Trematode Parasites

Abstract The study was conducted during September 2018-August 2019 to study the digenetic trematode infection in fresh water fishes of some of the water bodies viz. Gho-manhasan, Chakrali and Chadwal of Jammu region of J&K union territory A total of 220 fishes comprising Ophiocephalus punctatus and Xenentodon cancila belonging to families Channidae and Belonidae respectively were examined. A total of 4 digenetic trematode parasites belonging to 4 different families i.e., Euclinostomum heterostomum (Clinostomidae Luhe, 1901); Phyllodistomum tripathi (Gorgoderidae Looss, 1901); Genarchopsis piscicola (Hemiuridae, Luhe, 1901), and Bucephalopsis karvei (Bucephalidae Poche, 1907) were detected. The overall prevalence of digenetic trematode infection was 65.90% and the mean intensity was 3.58. Among these Genarchopsis piscicola showed the highest prevalence (40.38%) with mean intensity 2.95 in the host fish Xenentodon cancila, while in other species the prevalence ranged between 26.23% and 34.62%. Present study authenticates the presence of several species of digenetic trematode parasites in the fishes inhabiting freshwater of J&K union territory.

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Efficacy of Gabapentin in the Treatment of SUNCT Syndrome

Cephalalgia ◽

10.1111/j.1468-2982.2008.01673.x ◽

2008 ◽

Vol 28 (12) ◽

pp. 1339-1342 ◽

Cited By ~ 22

Author(s):

M Etemadifar ◽

AH Maghzi ◽

M Ghasemi ◽

A Chitsaz ◽

M Kaji Esfahani

Keyword(s):

Side Effects ◽

Case Reports ◽

The Other ◽

Side Effect Profile ◽

Open Label ◽

Mean Intensity ◽

Sunct Syndrome ◽

Before And After ◽

The Mean ◽

Pre Treatment

This study was designed to evaluate the efficacy of gabapentin (GBP) in the treatment of SUNCT syndrome on a relatively large sample of Persian patients. Eight patients with SUNCT syndrome underwent a 4-week, open-label, daily treatment of 600-900 mg GBP. The frequency, intensity and duration of attacks were compared before and after the trial. After 4 weeks of treatment, intensity, duration and frequency of headaches were significantly ( P< 0.05) reduced. In addition, five patients (62.5±) were completely relieved from headaches, and in the other three patients the mean intensity, frequency and duration of headaches were decreased notably. In this study, GBP was well tolerated and no unfavourable side-effects were reported. After the end of the trial all patients continued the medication, and after 3 months none reported undesired side-effects or return of the headaches to the pre-treatment status. Our patients had a significant response to GBP, and considering other case reports on the effectiveness of GBP in the treatment of SUNCT syndrome, we propose that, taking into account the good side-effect profile and lack of interactions of GBP, this drug could be considered as an option for the treatment of SUNCT.

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Infection status of Clinostomum complanatum (Rudolphi, 1819) metacercaria from Channa punctatus of Meerut District

Journal of Applied and Natural Science ◽

10.31018/jans.v3i2.197 ◽

2011 ◽

Vol 3 (2) ◽

pp. 280-283 ◽

Cited By ~ 2

Author(s):

Bindu Sharma ◽

Vidushi Rani ◽

Ayushi Chaudhary

Keyword(s):

Digenetic Trematode ◽

Infection Status ◽

Present Communication ◽

Female Fish ◽

Male And Female ◽

Mean Intensity ◽

Length Group ◽

Infection Susceptibility ◽

One Year ◽

Clinostomum Complanatum

Metacercaria Clinostomum complanatum is a digenetic trematode, which is mainly found in fresh water fishes. Present communication deals with the infection status of C. complanatum in C. punctatus of Meerut district, which is supported by the data spreading over one year. About 250 specimens of C. punctatus from different ponds of Meerut were studied through regular periodical collection in the year Jan 2010 to Dec 2010. Overall prevalence 35.6%, mean intensity 3.06 and abundance 1.09 were reported. The infection was maximum in winter and minimum in rainy season. Prevalence, intensity and abundance of the infestation were also found to be related to different length group and sex of the hosts, the medium sized fishes were more infected and the larger size fishes were less infected while the smaller size fishes showed moderate infection. Susceptibility of infection was not significantly different between male and female fish.

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Prevalence and intensity of helminth parasites in the snake headed fish, Channa punctatus of Savar, Dhaka

Jahangirnagar University Journal of Biological Sciences ◽

10.3329/jujbs.v4i1.27780 ◽

2016 ◽

Vol 4 (1) ◽

pp. 1-7

Author(s):

Sabira Sultana ◽

Md Abdus Salam

Keyword(s):

Channa Punctatus ◽

Helminth Parasites ◽

Mean Intensity ◽

Gnathostoma Spinigerum ◽

The Mean

Ten species of helminth parasites i.e. Neopecoelina saharanpuriensis, Mesolecitha linearis, Asymphylodora tincae, Genarchopsis bangladensis, Ditestolepis diphana, Senga sp., Neoechinorhynchus tylosuri, Pallisentis sp., Ascardia larvae., Gnathostoma spinigerum were identified from Channa punctatus of Savar area. Majority of the parasites were found in the intestine. The overall prevalence of infection of the parasites was 32.5% and the mean intensity was 1.46±1.29. Both the prevalence (34.61%) and mean intensity (1.5±1.21) were higher in male fishes than the female fishes (28.57% and 1.375± 0.99 respectively). The prevalence (13.75%) and mean intensity (1.64± 0.67) of trematodes were the highest among the parasites groups. Both the prevalence and mean intensity were the highest in the intermediate length (10.1-15.1cm) and weight (21-31gm) groups of fishes.Jahangirnagar University J. Biol. Sci. 4(1): 1-7, 2015 (June)

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Infections of Digenetic Trematode Metacercariae in Wrestling Halfbeak, Dermogenys pusilla from Bangkok Metropolitan Region in Thailand

The Korean Journal of Parasitology ◽

10.3347/kjp.2020.58.1.27 ◽

2020 ◽

Vol 58 (1) ◽

pp. 27-35 ◽

Cited By ~ 1

Author(s):

Laddawan Patarwut ◽

Thapana Chontananarth ◽

Jong-Yil Chai ◽

Watchariya Purivirojkul

Keyword(s):

Metropolitan Region ◽

Digenetic Trematode ◽

Head Part ◽

Intermediate Hosts ◽

Mean Intensity ◽

Digenetic Trematodes ◽

The Mean ◽

Study Sites ◽

Digestion Methods

This study aimed to investigate metacercarial infections in the wrestling halfbeak, Dermogenys pusilla, collected from Bangkok metropolitan region of Thailand. A total of 4,501 fish from 78 study sites were commonly examined with muscle compression and digestion methods (only head part of fish) during September 2017 to July 2018. The overall prevalence of metacercarial infection was 86.1% (3,876/4,501 individuals), and the mean intensity was 48.9 metacercariae per fish infected. Four species, i.e., Posthodiplostomum sp., Stellantchasmus falcatus, Cyathocotylidae fam. sp., and Centrocestus formosanus, of digenetic trematode metacercariae (DTM) were detected. The prevalences were 65.8%, 52.0%, 2.1%, and 1.2%, respectively and their mean intensities were 23.1, 51.6, 1.4, and 3.2 per fish infected, respectively. The seasonal prevalences were 81.0% in winter, 87.8% in summer and 87.4% in rainy, and the mean intensities were 38.9, 46.6, and 55.2 metacercariae per fish infected, respectively. Conclusively, it was confirmed that the wrestling halfbeak play the role of second intermediate hosts of 4 species of digenetic trematodes including S. falcatus and Posthodiplostomum sp. in Bangkok metropolitan region. And then the metacercariae of C. formosanus and Cyathocotylidae fam. sp. are to be first found in the wrestling halfbeak by this study.

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Abundance and stability of populations of chewing lice (Phthiraptera: Amblycera and Ischnocera) infesting two species of woodpeckers (Aves: Piciformes: Picidae)

The Canadian Entomologist ◽

10.4039/tce.2017.62 ◽

2018 ◽

Vol 150 (2) ◽

pp. 180-189 ◽

Cited By ~ 4

Author(s):

Robert J. Lamb ◽

Terry D. Galloway

Keyword(s):

Population Dynamics ◽

Sex Ratio ◽

Population Variability ◽

The Other ◽

Population Stability ◽

Mean Intensity ◽

Chewing Lice ◽

The Mean ◽

Louse Species ◽

Colaptes Auratus

AbstractThe annual abundance of chewing lice (Phthiraptera) was recorded from 1996 to 2015 in Manitoba, Canada, on two species of woodpeckers (Piciformes: Picidae). Yellow-bellied sapsuckers (Sphyrapicus varius (Linnaeus)) were infested with Menacanthus pici (Denny) (Amblycera: Menoponidae) and Penenirmus auritus (Scopoli) (Ischnocera: Philopteridae); northern flickers (Colaptes auratus (Linnaeus)) were also infested with M. pici, as well as two other Ischnocera, Penenirmus jungens (Kellogg) and Picicola porisma Dalgleish. The mean annual abundance varied from nine to 51 lice per bird for the four species, with prevalence, mean intensity, sex ratio, and nymphs per female also varying among louse species. Menacanthus pici populations on both hosts were unstable: abundance rose over two decades because of increasing prevalence, whereas the abundance of the other three louse species fluctuated around a mean. Population variability was similar for the lice on both hosts, with the metric, PV, ranging from 0.41 to 0.51 on a 0–1 scale, once the effect of the trend in abundance for M. pici had been removed. Although the population dynamics for species of lice on these two woodpeckers were distinct, inter-specific differences in population stability were less pronounced than observed in the few other species of bird lice studied in this way.

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Temporal and latitudinal 5577 Å airglow variations

Canadian Journal of Physics ◽

10.1139/p81-170 ◽

1981 ◽

Vol 59 (10) ◽

pp. 1296-1307 ◽

Cited By ~ 54

Author(s):

L. L. Cogger ◽

R. D. Elphinstone ◽

J. S. Murphree

Keyword(s):

Large Scale ◽

Emission Rate ◽

The Other ◽

Local Production ◽

Meridional Transport ◽

Mean Intensity ◽

Global Correlation ◽

The Mean ◽

Temporal And Spatial ◽

Winter Hemisphere

From 32 000 [O1] 5577 Å airglow limb observations made between April 1971 and December 1972 from the ISIS-2 satellite, the major temporal and spatial night airglow features have been identified. Two methods of analysis were employed: harmonic fitting and global correlation. Airglow emission rate maxima occurred in mid-October and mid-April at all latitudes. The intensities peaked near 35° in the winter and near 25° in the summer and showed a symmetry with latitude centred about 5° in the winter hemisphere. The mean intensity at mid-latitudes was 175 R and near the equator was 120 R. From the global correlation analysis it was shown that there are two distinct contributions to the temporal and spatial airglow variations: one is from local production which dominates during the post-solstice period, and the other is from large scale meridional transport which dominates during the post-equinox period.

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Prevalence, intensity and abundance of endoparasites in Oreochromis niloticus and Tilapia zilli (Pisces: Cichlidae) from Asa Dam, Ilorin, Nigeria

UNED Research Journal ◽

10.22458/urj.v7i1.863 ◽

2015 ◽

Vol 7 (1) ◽

pp. 67-70

Author(s):

C. Ebube Amaechi

Keyword(s):

Pollution Control ◽

Oreochromis Niloticus ◽

Parasite Burden ◽

Parasite Load ◽

Digenetic Trematode ◽

Male Fish ◽

North Central ◽

Fish Size ◽

Mean Intensity ◽

Overall Health Status

Disease is an important factor in fisheries, affecting both wild and cultured species. Using standard parasitological techniques we determined the prevalence, mean intensity and abundance of endoparasites from 250 specimens of two cichlids, Oreochromis niloticus and Tilapia zilli from Asa dam, Ilorin, North Central Nigeria between February and August, 2013. We found two digenetic trematode parasites:Euclinostomium heterostomum and Clinostomum tilapiae. The highest prevalence was recorded in O. niloticus (35,9%) infested by C.tilapiae, while the highest mean intensity was recorded in T. zilli. There was no relationship (p >0,05) between parasite burden and fish size(length and weight). Male fish were more heavily infected than females.The overall health status of both fish species remained unaffected. Thehigh rate of pollution noticed in the study area might be favoring parasite load. Therefore, pollution control and regular surveillance of the water body are advocated.

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