“…Among the parasites Trichodina pediculus was previously recorded in C. punctatus in Bangladesh (Deb et al 2015, Akther et al 2018. Henneguya chaudhuryi (Bajpai andHalder 1982, Chaudhary et al 2017) and Henneguya bengalensis (Raychaudhuri and Chakravarty 1970) collected from C. punctatus were previously recorded in India but recorded as a new locality in the present study for the first time in Bangladesh (Table 2).…”
Section: Resultssupporting
confidence: 53%
“…and Myxobolus sp. were recorded from C. punctatus in Bangladesh in various other studies (Deb et al 2015, Miah et al 2013, Akther et al 2018 and Trichodina cobitis were found from Channa striatus in Bangladesh (Asmat et al 2017).…”
Section: Resultsmentioning
confidence: 89%
“…A considerable number of studies have been conducted on the protozoan parasites of C. punctatus in Bangladesh (Sanaullah 1996, Arthur and Ahmed 2002, Miah et al 2013, Deb et al 2015, Akther et al 2018. From these studies a limited knowledge about the species identification, taxonomy, distribution and prevalence of protozoan infection was found in the host.…”
Three species of myxozoa (Henneguya chaudhuryi, Henneguya bengalensis and Myxobolus sp.) and 3 species of ciliophora (Trichodina pediculus, Epistylis lwoffi and Apisoma piscicolum) and two actinosporean stages of myxoza were identified. Some 51.72% of total host fishes which were found infected with at least one of the above mentioned parasites with average load of 95.93±41.53 per infected host. High percentage (98.05) of C. punctatus possessed myxozoan infection and 1.95 had chiliophoran infection. The highest prevalence of parasitic infection was observed in host sample collected from Faridpur district and lowest (33.33%) in fish sample collected from Mymensingh. The association of parasitic infection of H. bengalensis and Myxobolus sp. with study areas was found statistically significant (p=0.024 and 0.049, respectively). Protozoan parasites were most abundant in gills of hosts. Shannon Diversity Index indicated that host fishes were not infested by more parasites and the parasite community was poorly diverged in all study sites. However, Simpson’s Diversity showed that, parasites community was moderately diverged in host fishes collected from Mymensingh district and in rest of the areas parasite community was poorly diverged.
Asiat. Soc. Bangladesh, Sci. 46(1): 13-25, June 2020
“…Among the parasites Trichodina pediculus was previously recorded in C. punctatus in Bangladesh (Deb et al 2015, Akther et al 2018. Henneguya chaudhuryi (Bajpai andHalder 1982, Chaudhary et al 2017) and Henneguya bengalensis (Raychaudhuri and Chakravarty 1970) collected from C. punctatus were previously recorded in India but recorded as a new locality in the present study for the first time in Bangladesh (Table 2).…”
Section: Resultssupporting
confidence: 53%
“…and Myxobolus sp. were recorded from C. punctatus in Bangladesh in various other studies (Deb et al 2015, Miah et al 2013, Akther et al 2018 and Trichodina cobitis were found from Channa striatus in Bangladesh (Asmat et al 2017).…”
Section: Resultsmentioning
confidence: 89%
“…A considerable number of studies have been conducted on the protozoan parasites of C. punctatus in Bangladesh (Sanaullah 1996, Arthur and Ahmed 2002, Miah et al 2013, Deb et al 2015, Akther et al 2018. From these studies a limited knowledge about the species identification, taxonomy, distribution and prevalence of protozoan infection was found in the host.…”
Three species of myxozoa (Henneguya chaudhuryi, Henneguya bengalensis and Myxobolus sp.) and 3 species of ciliophora (Trichodina pediculus, Epistylis lwoffi and Apisoma piscicolum) and two actinosporean stages of myxoza were identified. Some 51.72% of total host fishes which were found infected with at least one of the above mentioned parasites with average load of 95.93±41.53 per infected host. High percentage (98.05) of C. punctatus possessed myxozoan infection and 1.95 had chiliophoran infection. The highest prevalence of parasitic infection was observed in host sample collected from Faridpur district and lowest (33.33%) in fish sample collected from Mymensingh. The association of parasitic infection of H. bengalensis and Myxobolus sp. with study areas was found statistically significant (p=0.024 and 0.049, respectively). Protozoan parasites were most abundant in gills of hosts. Shannon Diversity Index indicated that host fishes were not infested by more parasites and the parasite community was poorly diverged in all study sites. However, Simpson’s Diversity showed that, parasites community was moderately diverged in host fishes collected from Mymensingh district and in rest of the areas parasite community was poorly diverged.
Asiat. Soc. Bangladesh, Sci. 46(1): 13-25, June 2020
“…Although changes of parasite incidence are attributed to diet and other factors such as host size and development of host immunity. (29) The result can be compared with the findings of Akther et al (2018) (30) stated that the prevalence ranged from 67.86 to 81.82% in C. punctatus, highest prevalence was recorded in autumn and the lowest one was recorded in rainy season (30) . The correlation co-efficient analysis depicted that all the relationships between prevalence and abundance; abundance and mean intensity and prevalence and mean intensity were positively correlated in different seasons.…”
The study was conducted to identify the protozoan parasites in a freshwater indigenous air breathing fish, Heteropneustes fossilis (Bloch, 1794). The host fish was collected during mid of the April 2018 to end of the March 2019 from freshwater bodies of Mymensingh, Kishoregonj, Faridpur, Jashore, Manikganj and Bogura districts of Bangladesh. Three species of phylum myxozoa namely Henneguya singhi, Henneguya qadrii, Henneguya mystusia, one species of phylum ciliophora namely Trichodina siddiquae and two species of phylum mastigophora namely Trypanosoma singhii and Piscinoodium pillulare were identified in H. fossilis. The parasites of all infected hostswere observed in gill, body slime and blood, however gillswere commonly infected by parasites rather than body slime and blood. Three species of parasite Piscinoodium pillulare, Henneguya qadrii and Henneguya mystusia were first recorded in this host fish and novel locality record in Bangladesh. H. fossilis was found to be infected over the three major (p<0.05) (summer, rainy and winter) seasons and demonstrated a strong significant association (P0<05) with season during the study period. In H. fossilis, highest variety and highest number of parasites were found in winter season, prevalence and intensity was found 78.31% and 5.17 respectively. Lowest prevalence and intensity were found in rainy season respectively 45.87 and 4.72. Among all the parasites Henneguya singhi was common in all the three seasons and its rate of infection was found elevated in summer (20.69%) and rainy season (19.27%). In H. fossilis prevalence of female fish were highest in all the three seasons, summer (55.22%), rainy (50.75%) and winter (85.57%) than their male counterparts 38.76%, 38.09% and 68.12%, respectively.
Dhaka Univ. J. Biol. Sci. 32(1): 21-32, 2023 (January)
“…Infection of Trichodina spp. or the other protozoan opportunism parasitic on mahseer has been reported from aquaculture ponds and wild populations (Muchlisin et al, 2014), on bagrid catfish (Theerawoot, 2008), and on snakehead (Deb et al, 2015;Akther et al, 2018;Novita et al, 2020;Sembiring et al, 2021;Zaiyana et al, 2022). Moreover, it was mentioned that massive infections of those parasites can directly result in superficial skin lesions which then allow secondary bacterial and fungal infections to develop at the affected sites.…”
Abstract Mahseer "dewa" (Tor soro), snakehead "gabus" (Channa striata), and bagrid catfish "baung" (Hemibagrus nemurus) are local specific fish species that are promising to be developed as freshwater aquaculture commodities in Indonesia. Disease cases/outbreaks in those fish farming have often been reported, however, there is not much information on the epizootiology and disease status of those fish species. The susceptibility of those fish to parasitic infection was evaluated by natural and artificial infection. Natural infection was conducted by randomly sampling 20 fish at 5-day intervals and lasting for 30 days. In artificial infection, 150 tested fish cohabited with 40 parasite-carrying fish that were known to be definitely infected by the parasite. The observation was carried out by sampling 20 fish at 5-day intervals and lasting for 30 days. The results showed that the three fish species were susceptible to infection with Trichodina spp, Epistylis spp, Tetrahymena spp, Ichtyophthirius multifiliis, Dactylogyrus spp, and Gyrodactylus spp, while the helminth parasite Pallisentis nagpurensis (Acanthocephala) was only identified in snakehead. A number of parasites such as I. multifiliis, Dactylogyrus spp., and Gyrodactylus spp. are likely to be potential obstacles in the cultivation of those fish species, especially in hatcheries and nurseries. Keywords: mahseer, snakehead, bagrid catfish, parasites
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