scholarly journals Endoparasitic Infection in Laboratory Rat Strain, Long-Evans (Rattus norvegicus Berkenhout, 1769)

1970 ◽  
Vol 44 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Farhana Muznebin ◽  
Hamida Khanum ◽  
Zaibun Nessa ◽  
Dipa Islam
Keyword(s):  
Key Words ◽  
Rattus Norvegicus ◽  
Parasite Species ◽  
Hymenolepis Diminuta ◽  
Helminth Parasite ◽  
New Finding ◽  
Syphacia Muris ◽  
Rat Strain ◽  
Long Evans ◽  
Taxonomic Groups

In the present study, five helminth parasite species from two taxonomic groups were identified from Long-Evans (Rattus norvegicus Berkenhout, 1769). The cestodes were Vampirolepis nana Siebold, Hymenolepis diminuta Rud and nematodes were Citellina dispar Prendel, Heterakis spumosa Schneider and Syphacia muris Yamaguti. C. dispar is a new finding in Bangladesh. The highest prevalence of H. diminuta was recorded but the highest intensity was recorded in V. nana. The prevalence and intensity of V. nana was 56.25% and 65.11±13.23; H. dimisnuta was 72.92% and 4.37±0.89; C. dispar was 62.50% and 19.63 ±2.10; H. spumosa was 66.67% and 9.06±1.85; and S. muris was 64.58% and 24.65±2.60 respectively. Differences in prevalence and intensity due to sexes and seasons were also evaluated. Key words: Cestodes, Nematodes, Helminth, Prevalence, Intensity.     doi: 10.3329/bjsir.v44i1.2718 Bangladesh J. Sci. Ind. Res. 44(1), 109-116, 2009

scholarly journals Nematode and Cestode Prevalence, Organal Distribution and Histological Effects Due to Parasitic Infection in Laboratory Rat Strain, Long-Evans (Rattus norvegicus Berkenhout, 1769)

1970 ◽  
Vol 44 (2) ◽  
pp. 207-210 ◽  
Author(s):  
Hamida Khanum ◽  
Farhana Muznebin ◽  
Zaibun Nessa
Keyword(s):  
Rattus Norvegicus ◽  
Parasitic Infection ◽  
Intestinal Wall ◽  
Hymenolepis Diminuta ◽  
Histopathological Study ◽  
Helminth Parasites ◽  
Laboratory Rat ◽  
Syphacia Muris ◽  
Long Evans ◽  
Taxonomic Groups

Endoparasitic infection and histopathological effects in the laboratory rat, Long-Evans (Rattus norvegicus Berkenhout 1769) was evaluated. Five species of helminth parasites from two taxonomic groups were identified. They were -Cestodes (Vampirolepis nana Siebold, 1852 and Hymenolepis diminuta Rudolphi, 1819) and Nematodes (Citellina dispar Prendel, 1928; Heterakis spumosa Schneider, 1866 and Syphacia muris Yamaguti, 1941). All the worms were collected from the alimentary tract of the Long-Evans. The prevalence of infection was found highest in caecum (95.83%) and the intensity of infestation was found highest in anterior parts of the intestine (51.33±10.63). The histopathological study of helminth infected alimentary canal showed that the intestinal wall was severely damaged. Key words: Nematodes, Cestodes, Prevalence, Vampirolepis nana, Hymenolepis diminuta, Citellina dispar, Heterakis spumosa and Syphacia muris. DOI: 10.3329/bjsir.v44i2.3673 Bangladesh J. Sci. Ind. Res. 44(2), 207-210, 2009

scholarly journals Parasitic infestation in laboratory rat strain, Long-Evans (Rattus norvegicus Berkenhout, 1769)

1970 ◽  
Vol 29 ◽  
pp. 41-45 ◽  
Author(s):  
Md Abdul Gofur ◽  
Hamida Khanum ◽  
Milka Patracia Podder ◽  
Zaibun Nessa
Keyword(s):  
Small Intestine ◽  
Large Intestine ◽  
Rattus Norvegicus ◽  
Alimentary Tract ◽  
Helminth Parasites ◽  
Hymenolepis Nana ◽  
Syphacia Muris ◽  
Rat Strain ◽  
Long Evans ◽  
Taxonomic Groups

In the present investigation, 30 Long-Evans were examined. Out of 30, 23 rats were infected by helminth parasites, two species of helminth parasites from two taxonomic groups were identified, cestode Hymenolepis nana and nematode Syphacia muris. The prevalence and intensity of parasites were quite different in different groups of helminth parasites in hosts. The prevalence and intensity of infestation of cestodes were 26.67% and 5.57±1.5 while higher of nematodes 66.67% and 60.85±8.1 in the Long-Evans respectively. Hymenolepis nana was found in small intestine and Syphacia muris in all parts of the alimentary tract. The prevalence and intensity of infestation was 36.67% and 5.09±1.6 respectively in small intestine. The prevalence of infestation was similar both in large intestine and caecum (63.33%), and in rectum (63.33%). The intensity of infestation was 24±3.30 and 39.16±4.10 in large intestine and caecum, and in rectum respectively. Key words: Long-Evans; Rattus norvegicus; cestodes; nematodes; prevalence; intensity. DOI: http://dx.doi.org/10.3329/ujzru.v29i1.9464 UJZRU 2010; 29(1): 41-45

scholarly journals Helminth communities and host-parasite relationships in argentine brown rat (Rattus norvegicus)

2008 ◽  
Vol 45 (3) ◽  
pp. 126-129 ◽  
Author(s):  
I. Gomez Villafañe ◽  
M. Robles ◽  
M. Busch
Keyword(s):  
Rattus Norvegicus ◽  
Parasite Fauna ◽  
Individual Characteristics ◽  
Hymenolepis Diminuta ◽  
Nippostrongylus Brasiliensis ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Poultry Farms ◽  
Syphacia Muris ◽  
The Mean

AbstractThe aims of this research were: 1) to determine the helminth parasite fauna of seventy two Rattus norvegicus (Berkenhout, 1769) individuals inhabiting poultry farms in the Pampean region of Argentina; 2) to examine the relationship between parasitism and individual characteristics of the hosts, and 3) to analyze the associations among helminths. The study was carried out in twenty-four poultry farms from autumn 2000 to winter 2001. Nematodes were found in the intestine or caecum rectum of the 74 % of rats and cestodes were found along all the intestine of the 28 % of rats. Heterakis spumosa (Travassos 1914) was a central species, whereas Syphacia muris, Yamaguti 1941, Nippostrongylus brasiliensis (Travassos 1914) and Hymenolepis diminuta (Rudolphi 1819) were satellite species. Helminths do not affect rat survival and growth of rats. Rats parasitized with H. spumosa and H. diminuta were larger and older than non-parasitized rats. The intensity of infection with H. spumosa significantly increased with rat age. Rats parasitized with Nippostrongylus brasiliensis and Syphacia muris did not differ in size and age with respect to non-parasitized ones. The mean intensity of infections per host was 33.74, 74.28, higher than 200, and 3.10 for H. spumosa, S. muris, N. brasiliensis and H. diminuta, respectively. The mean intensity of infection with H. spumosa was higher in summer than in the other seasons, while the higher mean intensity of infection with N. brasiliensis and S. muris occurred in autumn. Infections with Heterakis spumosa and Syphacia muris, and with Syphacia muris and Nippostrongylus brasiliensis were independent; while Heterakis spumosa and Nippostrongylus brasiliensis were negatively associated.

Comparative efficacy of albendazole, mebendazole and neem leaf extract in helminth infections in rat models

1970 ◽  
Vol 20 (1) ◽  
pp. 41-48
Author(s):  
Hamida Khanum ◽  
Shahanaj Pervin ◽  
Zaibun Nessa ◽  
ABM Mizanur Rahman
Keyword(s):  
Rattus Norvegicus ◽  
Leaf Extract ◽  
Reduction Rate ◽  
Hymenolepis Diminuta ◽  
Relative Efficacy ◽  
Cure Rate ◽  
Comparative Efficacy ◽  
Long Evans ◽  
Neem Leaf Extract ◽  
Egg Reduction Rate

Comparative efficacy of Albendazole, Mebendazole and neem leaf extract (Azadirachta indica) against Vampirolepis nana, Hymenolepis diminuta and Syphacia muris infections in laboratory rat strain Long-Evans (Rattus norvegicus Berkenhout, 1769) was evaluated. After treating with the drugs, egg reduction rate and cure rate from the worm infection were observed. Mebendazole had greater efficacy in terms of cure rate against H. diminuta, but in terms of egg reduction rate in H. diminuta infection, Albendazole had greater efficacy. The relative efficacy of Albendazole and Mebendazole were similar in terms of cure rate for S. muris infection (33.33%). In case of H. diminuta, both Albendazole and Mebendazole had nearly similar efficacy in terms of cure rate (20% vs. 25%). Albendazole had greater efficacy in terms of cure rate and egg reduction rate against V. nana than Mebendazole (25% vs. 16.67% and 28.57% vs. 10%). In case of S. muris infection, Mebendazole showed the higher egg reduction rate than Albendazole (20.09% vs 14.52%). Neem leaf extract had better efficacy on egg reduction rate in case of S. muris infection than Albendazole and Mebendazole. The relative efficacy of the neem extract was higher than that of the administred chemotherapy.Key words: Long-Evans; Rattus norvegicus; Comparative; Efficacy; Albendazole; Mebendazole; Neem leaf extractDOI: http://dx.doi.org/10.3329/dujbs.v20i1.8836Dhaka Univ. J. Biol. Sci. 20(1): 41-48, 2011 (January)

scholarly journals Helminths of the brown rat (Rattus norvegicus) (Berkenhout, 1769) in the city of Palermo, Italy

2010 ◽  
Vol 47 (4) ◽  
pp. 238-240 ◽  
Author(s):  
C. Milazzo ◽  
A. Ribas ◽  
J. Casanova ◽  
M. Cagnin ◽  
F. Geraci ◽  
...  
Keyword(s):  
Rattus Norvegicus ◽  
Infection Intensity ◽  
Helminth Species ◽  
Hymenolepis Diminuta ◽  
Nippostrongylus Brasiliensis ◽  
Syphacia Muris ◽  
Brown Rat ◽  
Males And Females ◽  
Taenia Taeniaeformis ◽  
The City

AbstractA helminthological survey was performed on 143 brown rats (Rattus norvegicus) from the city of Palermo (Italy). The overall prevalence of helminth infection was 98.60 %. The following parasites were found: Brachylaima sp. (prevalence 8.39 %) (Trematoda); Taenia taeniaeformis larvae (11.89 %), Rodentolepis nana (13.29 %), Hymenolepis diminuta (24.48 %) (Cestoda); Gongylonema sp., (4.90 %), Syphacia muris (8.39 %), Nippostrongylus brasiliensis (18.88 %), Eucoleus gastricus (30.07 %), Mastophorus muris (30.77 %), Capillaria hepatica (54.55 %), Heterakis spumosa (82.52 %) (Nematoda) and one acanthocephalan (0.70 %). The species found in males were also present in females, with the exception of the acanthocephalan. No significant differences were found between males and females in prevalence (P%) or mean infection intensity (MI). However, a significant correlation between both P% and MI, as well as host age, was observed in some helminth species. Hosts were infected by one to six helminth species (median = 3). This is the first report from Sicily of helminths in R. norvegicus.

scholarly journals Identificación de Parásitos Gastrointestinales en ratas de Lima Metropolitana

2015 ◽  
Vol 26 (2) ◽  
pp. 273 ◽  
Author(s):  
Renzo De Sotomayor C. ◽  
Enrique Serrano-Martínez ◽  
Manuel Tantaleán V. ◽  
Marco Quispe H. ◽  
Gina Casas V.
Keyword(s):  
Rattus Norvegicus ◽  
Rattus Rattus ◽  
Hymenolepis Diminuta ◽  
Syphacia Muris ◽  
Moniliformis Moniliformis ◽  
Aspiculuris Tetraptera

El presente estudio tuvo como objetivo identificar los helmintos gastrointestinales en ratas de Lima Metropolitana, Perú, así como cuantificar la frecuencia de infección, resaltando los resultados de aquellos helmintos de interés zoonótico. Se capturaron 53 Rattus rattus y 20 Rattus norvegicus en cinco zonas urbanas. Los tractos gastrointestinales se procesaron con la técnica de Travassos y las heces se evaluaron por observación directa en el microscopio. El 77.4% de R. rattus y el 100% de R. norvegicus estuvieron infectados con helmintos. En R. rattus se identificaron tres especies de cestodos: Hymenolepis diminuta (39.6%), Rodentolepis fraterna (7.5%) y Raillietina demerariensis (7.5%), seis especies de nematodos: Gongylonema neoplasticum (41.5%), Heterakis spumosa (13.2%), Syphacia muris (11.3%), Strongyloides ratti (15.1%), Aspiculuris tetraptera (11.3%) y Protospirura chanchanensis (3.8%) y una especie de acantocéfalo: Moniliformis moniliformis (32.1%). En R. norvegicus se identificaron dos especies de cestodos: Hymenolepis diminuta (55%) y Rodentolepis fraterna (5%), tres especies de nematodos: Gongylonema neoplasticum (75%), Heterakis spumosa (65%) y Strongyloides ratti (45%) y una especie de acantocéfalo: Moniliformis moniliformis (35%). Los resultados indican que Hymenolepis diminuta y Moniliformis moniliformis fueron los agentes parasitarios de importancia zoonótica más frecuentes.

scholarly journals What factors explain the geographical range of mammalian parasites?

2019 ◽  
Vol 286 (1903) ◽  
pp. 20190673 ◽  
Author(s):  
James E. Byers ◽  
J. P. Schmidt ◽  
Paula Pappalardo ◽  
Sarah E. Haas ◽  
Patrick R. Stephens
Keyword(s):  
Host Species ◽  
Parasite Species ◽  
Geographical Area ◽  
Complete Information ◽  
Sampling Effort ◽  
Free Living ◽  
Living Species ◽  
Habitat Breadth ◽  
Taxonomic Groups ◽  
Host Characteristics

Free-living species vary substantially in the extent of their spatial distributions. However, distributions of parasitic species have not been comprehensively compared in this context. We investigated which factors most influence the geographical extent of mammal parasites. Using the Global Mammal Parasite Database we analysed 17 818 individual geospatial records on 1806 parasite species (encompassing viruses, bacteria, protozoa, arthropods and helminths) that infect 396 carnivore, ungulate and primate host species. As a measure of the geographical extent of each parasite species we quantified the number and area of world ecoregions occupied by each. To evaluate the importance of variables influencing the summed area of ecoregions occupied by a parasite species, we used Bayesian network analysis of a subset ( n = 866) of the parasites in our database that had at least two host species and complete information on parasite traits. We found that parasites that covered more geographical area had a greater number of host species, higher average phylogenetic relatedness between host species and more sampling effort. Host and parasite taxonomic groups had weak and indirect effects on parasite ecoregion area; parasite transmission mode had virtually no effect. Mechanistically, a greater number of host species probably increases both the collective abundance and habitat breadth of hosts, providing more opportunities for a parasite to have an expansive range. Furthermore, even though mammals are one of the best-studied animal classes, the ecoregion area occupied by their parasites is strongly sensitive to sampling effort, implying mammal parasites are undersampled. Overall, our results support that parasite geographical extent is largely controlled by host characteristics, many of which are subsumed within host taxonomic identity.

scholarly journals New host record of some gastrointestinal parasites of Irrawaddy squirrel (Callosciurus pygerythrus) from Chittagong, Bangladesh

2018 ◽  
Vol 46 (2) ◽  
pp. 87-103
Author(s):  
Md Afzal Hussain ◽  
Rajib Acharjee ◽  
Benazir Ahmed
Keyword(s):  
Host Specificity ◽  
Parasite Species ◽  
Host Record ◽  
Gastrointestinal Parasites ◽  
Hymenolepis Diminuta ◽  
University Campus ◽  
Gi Tract ◽  
New Host ◽  
New Host Record ◽  
Syphacia Obvelata

Gastrointestinal (GI) tract of 60 Irrawaddy squirrels (Callosciurus pygerythrus) were collected between September 2013 and August 2014 from four different spots of Chittagong University campus and its adjacent areas to study the ento-helminth fauna. Eight different parasite species were identified - one belonging to Cestoda and represented by Hymenolepis diminuta, and the remaining seven were to Nematoda viz., Strongyloides callosciurus, Trichuris ovis, Monodontus sp., Cyclodontostomum purvisi, Moguranema nipponicum, Ascarops talpa and Syphacia obvelata. The nematodes were found as dominant species most preferably inhabiting the small intestine. The present host is the new host record for all of these parasites and S. callosciurus, T. ovis, Monodontus sp., M. nipponicum and A. talpa are the new records for Bangladesh too. All these parasites have very wide host specificity, though most of them are restricted to various rodent hosts but H. diminuta and S. callosciurus were found to have more wider specificity, including other vertebrates too. All identified parasites might have been acquired from the environment where the host inhabits, since host specificity perspective no parasites were found to be specific to the present host. H. diminuta and Syphacia obvelata might have zoonotic role to other wild animals and human and vice versa. Bangladesh J. Zool. 46(2): 87-103, 2018

scholarly journals Hymenolepiasis in Rats (Rattus Norvegicus) With Its Zoonotic Potential in Mymensingh District of Bangladesh

2020 ◽  
Vol 7 (2) ◽  
pp. 255-259
Author(s):  
Rahul Pratap Singh ◽  
Babul Chandra Roy ◽  
Asish Kumer Debnath ◽  
Sultana Fizun Nahar ◽  
Md Hasanuzzaman Talukder
Keyword(s):  
Low Socioeconomic Status ◽  
Rattus Norvegicus ◽  
Reservoir Host ◽  
Hymenolepis Diminuta ◽  
Residential Areas ◽  
Low Socioeconomic ◽  
Rural Villages ◽  
Rural Village ◽  
Laboratory Rats ◽  
Hygiene Practices

Hymenolepis nana and Hymenolepis diminuta are globally widespread zoonotic cestodes and rats act as main reservoir host of these cestodes. Wild brown rats (Rattus norvegicus) are the most common rats usually live in human’s dwellings, especially in areas of low socioeconomic status and low levels of hygiene practices. Since there is scarcity of information of the hymenolepiasis in rats in Bangladesh, therefore the aim of this study was to determine the incidence of H. nana and H. diminuta in wild and laboratory rats. A total of 60 rats were collected from the residential areas of rural villages of Mymensingh sadar and the Bangladesh Agricultural University campus and 10 were from the laboratory of the Department of Parasitology, BAU, Mymensingh. The rats were killed by cardiac puncture and tapeworms were collected and subsequently were subjected for morphological study under the stereomicroscope. Two species of cestodes, namely H. nana and H. diminuta were detected showing the overall prevalence of 23.3 % and 35 % respectively. The high prevalence of H. nana (30%) was determined in rats captured from the rural village areas whereas H. diminuta was found more prevalent (60%) in the laboratory rats. The result of the current study suggests that H. nana infection in rural village areas may act as a risk factor for the zoonotic transmission of hymenolepiasis to human in Bangladesh. Res. Agric., Livest. Fish.7(2): 255-259,  August 2020

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