scholarly journals Seasonal prevalence, intensity and organal distribution of Helminth parasites in macrognathus aculeatus

1970 ◽  
Vol 20 (2) ◽  
pp. 117-122
Author(s):  
Hamida Khanum ◽  
Salma Begum ◽  
Aleya Begum
Keyword(s):  
Seasonal Variation ◽  
Key Words ◽  
Infection Rate ◽  
Rainy Season ◽  
Parasitic Infection ◽  
Helminth Parasites ◽  
Seasonal Prevalence ◽  
Female Fish ◽  
Intensity Of Infection ◽  
Macrognathus Aculeatus

Examination of 122 individuals of Macrognathus aculeatus (popularly known as Tara Baim), collected monthly, from the river Buriganga during March, 2007 to February, 2008 revealed 77 fishes were infected with various helminth parasites with an infection rate of 63.11% and intensity of infection of 3.18. A total of 245 parasites were recovered from different organs of the fishes, with the highest number from the intestine. Six species of helminths were detected, of which two were trematodes (Clinostomum piscidum and Rhynchooharynx paradoxa), one species of cestode (Marsipometra parva) and three species of nematodes (Pseudoproleptus vestibules, Cucullanus cirratus and Porrocaecum trichiuri L3 larva). The prevalence and intensity of parasitic infection were a bit higher in female fish than in male. The parasites were much more abundant in rainy season (75%) followed by summer (62.5%) and winter (31.81%). The larger fishes were heavily infected (71.01%) than medium (53.33%) and smaller (52.17%) fishes. Key words: Macrognathus aculeatus; Helminth; Prevalence; Intensity; Organal distribution;  Seasonal variation DOI: http://dx.doi.org/10.3329/dujbs.v20i2.8971 DUJBS 2011; 20(2): 117-122

scholarly journals Infestation of helminth parasites in Gangetic Leaffish Nandus nandus (Hamilton, 1822)

2015 ◽  
Vol 42 (2) ◽  
pp. 183-190
Author(s):  
Suraiya Parveen ◽  
Sabira Sultana
Keyword(s):  
Infection Rate ◽  
Fish Habitat ◽  
Parasitic Infection ◽  
Helminth Parasites ◽  
Female Fish ◽  
Intensity Of Infection ◽  
Gnathostoma Spinigerum ◽  
Eleven Species

The present study was conducted to assess the prevalence and intensity of infestation by the helminth parasites in Gangetic Leaffish Nandus nandus (Hamilton, 1822) collected from different fish habitat of Savar Thana of Dhaka district in Bangladesh, during March 2013 to April 2014. A total of 80 fishes were examined and among them 51 were found infected with various helminth parasites with an infection rate of 63.75% and intensity of infection 4.53%. A total of 231 parasites was recovered from different organs of the fishes, with the highest number from the intestine. Eleven species of helminths were identified, of which three were trematodes (Clinostomum giganticum, C. complanatum, Euclinostomum multicaecum), two were cestodes (Bothriocephalus sp., Senga ophiocephalina), three were acanthocephalans (Pallisentis nandai, P. ophiocephali, Neoechinorhynchus sp,) and three were nematodes (Porrocaecum sp., Contracaecum sp., Gnathostoma spinigerum). The prevalence and intensity of parasitic infection were a bit higher in female fish than in male. The parasites were much more abundant in summer (73.33%) followed by rainy (60%) and winter (55%). The larger fishes were heavily infected (69.23%) than medium (64.71%) and smaller (50%) fishesBangladesh J. Zool. 42(2): 183-190, 2014

scholarly journals Parasitic Infection with Cirrhina mrigala (Hamilton) Collected from Rajshahi, Bangladesh

1970 ◽  
Vol 43 (2) ◽  
pp. 243-250
Author(s):  
Abdus Salam Bhuiyan ◽  
Abu Saleh Md. Musa ◽  
Golam Mohammad Musa ◽  
Tanjeena Zaman
Keyword(s):  
Seasonal Variation ◽  
Key Words ◽  
Infection Rate ◽  
Rainy Season ◽  
Parasitic Infection ◽  
Water Bodies ◽  
Body Parts ◽  
Metazoan Parasites ◽  
Fish Group ◽  
External Body

The parasitic infection was studied on Cirrhina mrigala, an indigenous major carp in different water bodies of Rajshahi district during April 2006 to January 2007. A total of 83 specimens of C. mrigala were examined during the study period of which 74 fishes were observed to be infected by numerous protozoan and metazoan parasites. A total number of 3063 parasites were recorded from the infected fishes. Ten different parasitic genera, Trichodina, Myxobolus, Chilodonella, Ichthyophthirius, Dactylogyrus, Gyrodactylus, Fellodistomum, Eucreadium, Camallanus and Argulus were identified from the hosts sampled. Among them seven were cetoparasites and three were endoparasites. Parasites were collected from different body parts of the fishes. Most of the parasites were collected from external body surfaces and gills. Prevalence, intensity and abundance of the infection with parasites were varied to different length groups of the hosts and months of the year. In case of length, the medium sized fishes were more infected than the maximum sized and their prevalence, intensity and abundance were highest. Infection rate was lowest in larger size fish group. In seasonal variation, the maximum infection was observed in pre-winter and the lowest number was recorded in rainy season. Key words: Parasitic infection, Cirrhina mrigala, Prevalence, Intensity, Abundance.  DOI: 10.3329/bjsir.v43i2.968 Bangladesh J. Sci. Ind. Res. 43(2), 243-250, 2008

scholarly journals Population density of helminths in ducks: effects of host’s age, sex, breed and season

1970 ◽  
Vol 6 (1) ◽  
pp. 45-51 ◽  
Author(s):  
T Farjana ◽  
KR Islam ◽  
MMH Mondal
Keyword(s):  
Population Density ◽  
Key Words ◽  
Parasitic Infection ◽  
Winter Season ◽  
Helminth Parasites ◽  
Domestic Ducks ◽  
The Mean

 A study was conducted to investigate the population density of helminth parasites in domestic ducks (Anas boschas domesticus) in relation to host's age, sex, breed and seasons of the year from March 2002 to May 2003. A total of 300 ducks were collected from different villages of Netrokona and Mymensingh districts of Bangladesh and autopsied to collect the parasites and counted to determine the population density of parasites. Off 300 ducks examined, 290 (96.66%) were infected with 17 species of helminth parasites in which 11 species were trematodes, 4 were cestodes and 2 nematodes. Among the parasites, density of cestodes was the highest (33.15±5.26), followed by trematodes (5.98±1.32); and nematodes (2.95±0.68). Mean density of parasites increased with the increase of age (young: 21.23±1.09, adult: 26.18±2.14 and old: 27.87±2.98) while the mean density of most of the helminth parasites was higher in female ducks (31.35±4.72) than in males (27.52±3.32). Indigenous ducks (33.72±3.61) were infected with the highest load of helminths than Khaki Campbell breed (29.61±4.32) of ducks. Mean density of most trematodes (5.42±0.80) were highest in winter season whereas mean density of all cestodes (48.43±4.85) and nematodes (4.13±1.76) were highest in summer.  The present study suggests that age, sex, breed of ducks and seasons of the year influence the parasitic infection to a greater extend. Key words: Population density, helminths, duck, Bangladesh DOI = 10.3329/bjvm.v6i1.1338 Bangl. J. Vet. Med. (2008). 6 (1): 45-51

scholarly journals Seasonality, parity rates and transmission indices of Mansonella ozzardi (Manson) (Nematoda: Onchocercidae) by Cerqueirellum argentiscutum (Shelley & Luna Dias) (Diptera: Simulidae) in a lower Solimões River community, Amazonas, Brazil

2004 ◽  
Vol 34 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Jansen Fernandes de Medeiros ◽  
Victor Py-Daniel
Keyword(s):  
Infection Rate ◽  
Rainy Season ◽  
Parasitic Infection ◽  
Black Flies ◽  
Transmission Potential ◽  
Biting Rate ◽  
Solimões River

Mansonella ozzardi is transmitted by two dipterian families, Ceratopogonidae (midges) and Simuliidae (black flies). In Brazil, black flies are vectors for this filariasis until now. In this paper, we determined the seasonality, parity capacity and parasitic infection rate of Cerqueirellum argentiscutum. The work was carried out in the Porto Japão community, Lower Solimões River, Amazonas, Brazil. Results show that the black flies were more abundant during the rainy season (from December to May). The number of parous flies was higher in every sampling during the course of year. Monthly Biting Rate (MBR1 123742.00, MBR2 86701.50) was high, although Parasitic Infection Rate (PIR1 0.06, PIR2 0.08) and Annual Transmission Potential (ATP 7.25) were low in numbers.

scholarly journals Sex, organal and seasonal differences of Belminthofauna of toad, bufo melanostictus (Schneider, 1799)

2013 ◽  
Vol 40 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Aleya Begum ◽  
Nasrin Banu
Keyword(s):  
Rainy Season ◽  
Parasite Species ◽  
Parasite Fauna ◽  
Helminth Parasites ◽  
Dhaka City ◽  
Intensity Of Infection ◽  
Bufo Melanostictus ◽  
Seasonal Differences ◽  
Toad Bufo

A total of 75 toads (39 males and 36 females), Bufo melanostictus, collected from different areas of Dhaka city from May 2009 to April 2010 was examined for helminth parasites. The results showed that seven parasite species were collected, and prevalence of infection was 100%. The parasite fauna was comprised of Trematoda: 8% was the prevalence of Ganeo kumaonensis, 8% of Halipegus eccentricus; Nematoda: 100% of Oswaldocruzia indica, 68% of Neopharyngodon sp., 40% of Rhabdias bufonis; Acanthocephala: 28% of Pseudoacanthocephalus bufonis; and Pentastomida: 4% of Raillietiella indica. Serious damage was observed in intestine (53.94%) then rectum (24.55%), stomach (12.73%) and lungs (8.78%). The males had a higher intensity (77.92) than the females (44.58). Seasonally, the highest intensity of infection was found in the rainy season (81.21) and lowest during the winter (39.87). DOI: http://dx.doi.org/10.3329/bjz.v40i2.14308 Bangladesh J. Zool. 40(2): 155-164, 2012

Helminth parasites of cultured Clarias gariepinus and Tilapia zillii in Uyo, Akwa Ibom State, Nigeria

2021 ◽  
Vol 29 (2) ◽  
pp. 87-94
Author(s):  
M.U Effiong ◽  
N.E Obot
Keyword(s):  
Key Words ◽  
Clarias Gariepinus ◽  
Parasitic Infection ◽  
Fish Parasites ◽  
Helminth Parasites ◽  
Chi Square ◽  
Tilapia Zillii ◽  
Fish Samples ◽  
Key Words Fish ◽  
Chi Square Analysis

The study examined helminth parasites of cultured Clarias gariepinus and Tilapia zillii in Uyo, Akwa Ibom State. A total of 60 fish samples (30 each of C.gariepinus and T. zillii) were subjected to parasitological examinations. Results revealed a total of 47(78.33%) fishes infected with various species of parasites: Nematodes (Camallanus polypteri, Paracamallanus cyathopharynx, and Procamallanus laevionchus), Cestodes (Polyonchobothrium torulosus and P. clariae) and Trematodes (Dactylogyrus extensus and Glossiduim pedatum) in decreasing order of abundance. Out of the 60 fish samples examined, 47 were infected with 219 parasites: 142(64.84%) nematodes, 40(18.26%) cestodes and 37(16.89%) trematodes. A total of 159(72.60%) parasites were recovered from C. gariepinus out of which 103(64.78%) were nematodes, 19(18.45%) were cestodes and 37(35.92%) were trematodes. While 60(27.40%) parasites were recovered from T. zilli, of which 39(65.00%) were nematodes and 21(35.00%) cestodes. No trematode was observed in the tilapia. The overall prevalence of parasitic infection was 78.33%. The results of chi square analysis showed that females of both species had significantly higher (P<0.05) prevalence of infection 27(84.4%) than males 20(71.4%). Also, C. gariepinus had higher infection rate of 25(83.33%) when compared to 22(73.33%) recorded in T. zillii. Key words: fish parasites, aquaculture, prevalence, C. gariepinus, T. zillii

scholarly journals Seasonal variation in helminth parasites of snakeheads Channa punctatus and Channa striatus (Perciformes: Channidae) in Uttar Pradesh, India

2018 ◽  
Vol 55 (3) ◽  
pp. 230-239 ◽  
Author(s):  
N. Kumari Gautam ◽  
P. Kumar Misra ◽  
A. Murari Saxena
Keyword(s):  
Seasonal Variation ◽  
Parasitic Infection ◽  
Uttar Pradesh ◽  
Economic Loss ◽  
Channa Punctatus ◽  
Medium Size ◽  
Helminth Parasites ◽  
Parasite Life Cycle ◽  
Channa Striatus ◽  
Parasitic Helminths

Summary Snakehead fishes are widely consumed throughout South East Asia, China and India because of their good taste of meat and high nutrient values such as presence of prostaglandins, thromboxane and Omega-6 fatty acid. Parasitic infection constitutes significant economic loss in fish production. The aim of this work was to study the seasonal variation of helminths in snakeheads. In the presented study, a three-year survey has been performed. A total of 1013 individuals of Channa punctatus and 247 individuals of Channa striatus were examined. A total of 3783 helminths were collected, with an average of 3.02 helminths/fish. 43.50 % individuals of C. punctatus and 59.10 % of C. striatus were found to be infected with acanthocephalans, trematodes, nematodes and cestodes per year. The prevalence and mean abundance of Pallisentis sp. was at its peak in summer. However the prevalence of trematodes, nematodes and cestodes was at peak during autumn. Mean abundance of nematodes was at peak in summer. Interestingly, the males were found more infected as compared to the females and the infection rate in males peaked in summer. In comparison to other weight groups, medium size hosts (21 – 40 g) were found more consistently infected. Thus the results indicate that there are seasonal variations in parasitic helminths infecting C. punctatus and C. striatus which also depend upon sex and weight. These variations may be attributed to various environmental and biological factors including parasite life cycle and immune level of host.

Prevalence of Linguatula sp., a food-borne zoonotic aberrant arthropod, in river buffaloes slaughtered at Tabriz slaughterhouse, Iran

2020 ◽  
Author(s):  
Nasser Hajipour ◽  
Jennifer Ketzis ◽  
Parviz Hassanzadeh
Keyword(s):  
Infection Rate ◽  
Statistical Association ◽  
Intermediate Hosts ◽  
Mesenteric Lymph Nodes ◽  
Intensity Of Infection ◽  
Mesenteric Lymph ◽  
Food Borne ◽  
Different Seasons ◽  
Significant Statistical Association ◽  
Age And Sex

Abstract Background Canids and herbivores are the definitive and intermediate hosts of Linguatula sp., respectively. Methods Mesenteric lymph nodes (n=32 525) were randomly collected from 7585 buffaloes from July 2016 to July 2019 and examined macroscopically. Results Results showed that 388 (5.11%) buffaloes were infected. The intensity of infection was determined to be 3.07±0.07. Significant statistical association was identified between infection rate and age and sex. Although there were no significant differences in the infection rate over different seasons, the highest infection rate was observed in autumn. Conclusions These data highlight the importance of inspection at slaughter.

scholarly journals Seasonal Variation of Rainy and Dry Season Per Capita Water Consumption in Freetown City Sierra Leone

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 499
Author(s):  
Salmatta Ibrahim A ◽  
Fayyaz Ali Memon ◽  
David Butler
Keyword(s):  
Seasonal Variation ◽  
Water Use ◽  
Water Consumption ◽  
Low Income ◽  
Rainy Season ◽  
Predictor Variable ◽  
Dry Season ◽  
Data Set ◽  
Per Capita ◽  
End Use

Ensuring a sustainable urban water supply for developing/low-income countries requires an understanding of the factors affecting water consumption and technical evidence of individual consumption which can be used to design an improved water demand projection. This paper compared dry and rainy season water sources available for consumption and the end-use volume by each person in the different income groups. The study used a questionnaire survey to gather household data for a total of 398 households, which was analysed to develop the relationship between per capita water consumption characteristics: Socio-economic status, demographics, water use behaviour around indoor and outdoor water use activities. In the per capita water consumption patterns of Freetown, a seasonal variation was found: In the rainy season, per capita water consumption was found to be about 7% higher than the consumption for the full sample, whilst in the dry season, per capita water consumption was almost 14% lower than the full survey. The statistical analysis of the data shows that the average per capita water consumption for both households increases with income for informal slum-, low-, middle- and high-income households without piped connection (73, 78, 94 and 112 L/capita/day) and with connection (91, 97, 113 and 133 L/capita/day), respectively. The collected data have been used to develop 20 statistical models using the multiple linear stepwise regression method for selecting the best predictor variable from the data set. It can be seen from the values that the strongest significant relationships of per capita consumption are with the number of occupants (R = −0.728) in the household and time spent to fetch water for use (R = −0.711). Furthermore, the results reveal that the highest fraction of end use is showering (18%), then bathing (16%), followed by toilet use (14%). This is not in agreement with many developing countries where toilet use represents the largest component of indoor end use.

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