scholarly journals Community structure analysis of endoparasitic helminths of Anabas testudineus (Bloch, 1792) from a fresh water body of Bangladesh

2014 ◽  
Vol 40 (1) ◽  
pp. 67-77
Author(s):  
Aminul Islam Bhuiyan ◽  
Md Osman Ghani ◽  
Jannatul Bushra
Keyword(s):  
Community Structure ◽  
Distribution Pattern ◽  
Fresh Water ◽  
Water Body ◽  
Random Distribution ◽  
Parasite Species ◽  
Parasite Diversity ◽  
Anabas Testudineus ◽  
Satellite Species ◽  
Species Category

Community structure of the parasites of Anabas testudineus was analyzed collected from a fresh water body, Turag River at Diabari, Mirpur point of Dhaka, Bangladesh. Out of 50 A. testudineus fish observed, 36 (72%) were parasitized by at least one species of helminth endoparasites. Six metazoan endoparasites were recorded: two trematodes (Allocreadium minutum, Neopecoelina saharanpuriensis) and four nematodes (Ascaridida sp., Gnathostoma spinigerum, Contracaecum sp., Paragendria wallagonia). Prevalence was higher in female (81.25%) hosts than male (55.56%). Nematode was more prevalent group (70%) than trematode (62%). All parasite species were accounted as secondary species category; no central or satellite species accounted in the sample. A significant positive correlation was observed between the standard length of the host with the prevalence and abundance of all parasites in this sample fishes. Two parasites (A. minutum and Ascaridida sp.) showed typical over-dispersed distribution pattern and other four parasites (N. saharanpuriensis, G. spinigerum, Contracaecum sp. and P. wallagonia) showed random distribution pattern. Interspecies association between two species of parasite was moderately strong. The host’s sex did not affect the parasite diversity and abundance.J. Asiat. Soc. Bangladesh, Sci. 40(1): 67-77, June 2014

scholarly journals Abundance and distribution of endoparasitic helminths in Anabas testudineus (Bloch, 1792) from a polluted beel of Bangladesh

2015 ◽  
Vol 42 (1) ◽  
pp. 1-10
Author(s):  
Aminul Islam Bhuiyan ◽  
Jannatul Bushra ◽  
Osman Ghani
Keyword(s):  
Distribution Pattern ◽  
Water Body ◽  
Significant Positive Correlation ◽  
Random Distribution ◽  
Polluted Water ◽  
Anabas Testudineus ◽  
Nematode Parasites ◽  
Abundance And Distribution ◽  
Satellite Species ◽  
Species Category

Abundance and distribution of the endoparasitic helminths in Anabas testudineus (collected from a polluted water body) was analyzed. Out of 50 fish observed, 42 (84%) were parasitized by at least one species. Five metazoan endoparasites, one trematode (Neopecoelina saharanpuriensis) and four nematodes (Ascaridida sp., Contracaecum sp., Camallanus anabantis and C. pearsei) were recorded. Prevalence was higher in female (90%) hosts than males (75%). A significant positive correlation was observed between the standard length of the host and the abundance for parasites except Ascaridida sp. Nematodes were the more prevalent group (72%) than trematodes (48%). No parasitic species was observed as central species category; three parasites (N. saharanpuriensis, Ascaridida sp. and Contracaecum sp.) were considered as secondary and Camallanus spp. as satellite species. All nematode parasites showed aggregated distribution pattern and the trematode showed random distribution pattern. Interspecies association between two species of parasite was low.Bangladesh J. Zool. 42(1): 1-10, 2014

scholarly journals Community structures of endoparasitic helminths of Channa punctatus from a fresh water river and a polluted lagoon of Bangladesh

2012 ◽  
Vol 39 (2) ◽  
pp. 173-185 ◽  
Author(s):  
Md. Osman Ghani ◽  
Aminul Islam Bhuiyan
Keyword(s):  
Fresh Water ◽  
Standard Length ◽  
Significant Positive Correlation ◽  
Parasite Species ◽  
Channa Punctatus ◽  
Dhaka City ◽  
Community Structures ◽  
Richness Index ◽  
Satellite Species ◽  
Species Category

Community structures of the parasites of Channa punctatus collected from fresh water Ichamoti river (IR) and a polluted sewerage treatment lagoon (SL) near Dhaka city were determined. Out of the total 104 C. punctatus fish observed, 78.85% were parasitized by at least one species of helminth endoparasites. Twelve metazoan endoparasite (viz. six trematodes, one cestode, three nematodes and two acantho-cephalans) were recorded. Neopecoelina saharanpuriensis, Pallisentis nandai, P. ophiocephali, Ascaridia sp. were common in both sites. Euclinostomum heterostomum, an unidentified digenean, Genarchopsis ozakii, Gangesia bengalensis, Buckleynema channi were recorded from IR and Genarchopsis bangladensis, Phyllodistomum chauhani, Camallanus intestinalus from the SL fishes. Trematode was the most prevalent group and had 63.46% and 53.85% prevalence in IR and SL sample fishes, respectively. Among the parasites of IR sample, only E. heterostomum was accounted as secondary and others fall in the satellite species category; no central species accounted in the sample. In case of SL sample, no parasite species found central, Pallisentis spp. could be considered secondary and others as satellite species. A significant positive correlation was observed between the standard length of the host, and the abundance and prevalence found only for Pallisentis spp. in SL fishes, and between the standard length and the abundance of the Ascaridia sp. in IR fishes. The larger hosts were more infected than the smaller hosts. Parasites of the fish of both sites showed typical over-dispersed distribution pattern in both the sites. No parasite showed random or uniform distribution in both the sample fishes. Parasite species richness index was lower in SL sample. Prevalence and intensity were higher in both sexes in SL sample than those of in IR sample.DOI: http://dx.doi.org/10.3329/bjz.v39i2.10584 Bangladesh J. Zool. 39(2): 173-185, 2011 

scholarly journals Community structure analysis of endoparasitic helminths of Anabas testudineus from unpolluted and polluted sites of a freshwater body of Dhaka

2014 ◽  
Vol 23 (1) ◽  
pp. 27-38
Author(s):  
Md Osman Ghani ◽  
Aminul Islam Bhuiyan ◽  
Jannatul Bushra
Keyword(s):  
Community Structure ◽  
Parasite Species ◽  
Parasite Community ◽  
Community Diversity ◽  
Polluted Water ◽  
Component Community ◽  
Anabas Testudineus ◽  
Host Sex ◽  
Host Habitat ◽  
Insignificant Difference

Community structure of metazoan endoparasites of Anabas testudineus collected from an unpolluted and a polluted water body was determined. Out of 100 A. testudineus observed, 78% was parasitized by at least one species of endohelminth parasite. Eight metazoan endoparasites were recorded. Nematode showed higher prevalence than trematode. One species was accounted as satellite species and others as secondary. Larger hosts were more abundantly infected than the smaller ones as positive correlation was observed between the standard length of the hosts and the abundance/ prevalence of all parasites. Maximum parasite species followed a typical overdispersed type of distribution pattern. Parasite species richness was lower in fish from polluted (4) than unpolluted water (6). Per cent similarity of infestation between the sample hosts was high (55.73%). Three common parasite species from both sample hosts showed insignificant difference in intensity of infestation in relation to host habitat. Host sex had influenced infestation at infra?community but not at component community level. Interspecies association between parasites was strong in fish from unpolluted in comparision from polluted water. Host’s habitat quality also played an influential role in building parasite community, diversity and other associated community indices. DOI: http://dx.doi.org/10.3329/dujbs.v23i1.19823 Dhaka Univ. J. Biol. Sci. 23(1): 27-38, 2014

scholarly journals Temporal Distribution of Gastropods In Rocky Intertidal Area In North Manokwari, West Papua

2019 ◽  
pp. 1
Author(s):  
Dandi Saleky ◽  
Simon P.O Leatemia ◽  
Yuanike Yuanike ◽  
Irman Rumengan ◽  
I Nyoman Giri Putra
Keyword(s):  
Community Structure ◽  
Distribution Pattern ◽  
Similarity Index ◽  
Temporal Distribution ◽  
Population History ◽  
Rocky Intertidal ◽  
Systematic Sampling ◽  
Intertidal Area ◽  
Ecological Features ◽  
West Papua

Gastropods is an important organism that commonly found inhabiting the rocky intertidal area. Distribution pattern of this species is influenced by various factors such as population history, microhabitat, predation and a complex interactions between oceanographic dynamics and ecological features. This study aims to compare the temporal distribution pattern of gastropods at two different rocky intertidal area. This research was conducted at the rocky intertidal area of Amban and Nuni, North Manokwari District, West Papua. Data collection was performed during the daylight and night in April and June 2012 using systematic sampling method. The results showed that both physical and chemical factors are suite for supporting gastropods life. Furthermore, these factors seem to have an impact on gastropod zoning patterns observed in the study area. The similarity index values ​​indicate that the similarity of gastropod species between the two locations is low, which means that the species of gastropods found in each location is quite different. The community structure of gastropod at the study area is stable. In addition, we found that the gastropods diversity were higher during the night than the daylight because gastropods are classified as a nocturnal animals. Key Words: Gastropod; Rocky Intertidal; Community Structure; Nocturnal

scholarly journals Determination of the 1,3- and 2-Positional Distribution of Fatty Acids in Olive Oil Triacylglycerols by 13C Nuclear Magnetic Resonance Spectroscopy

2006 ◽  
Vol 89 (4) ◽  
pp. 1071-1076 ◽  
Author(s):  
Giovanna Vlahov
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Olive Oil ◽  
Distribution Pattern ◽  
Random Distribution ◽  
Linear Models ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

Abstract Linear models were selected from a large data set acquired for Italian olive oil samples by quantitative 13C nuclear magnetic resonance (NMR) spectroscopy with distortionless enhancement by polarization transfer (DEPT). The models were used to determine the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols. The linear models selected proved that the 1,3- and 2-distribution of saturated, oleate, and linoleate chains in olive oil triacylglycerols deviated from the random distribution pattern to an extent that depended on the concentration of the fatty acid in the whole triacylglycerol. To calculate the fatty acid composition of the 1,3- and 2-positions of olive oil triacylglycerols, the equations of the selected linear models were applied to the fatty acid percentages determined by gas chromatography. These data were compared with the values predicted by the computer method (used to determine the theoretical amounts of triacylglycerols), which is based on the 1,3-random-2-random theory of the fatty acid distribution in triacylglycerols. The biggest differences were found in the linoleate chain, which is the chain that deviated the most from a random distribution pattern. The results confirmed that the 1,3-random-2-random distribution theory provides an approximate method for determining the structure of triacylglycerols; however, the linear models calculated by the direct method that applies 13C NMR spectroscopy represent a more precise measurement of the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols.

Bratislavia dadayi (Michaelsen 1905) (Annelida, Clitellata, Naididae): discovery of an alien oligochaete in a technogenic fresh water body in Ukraine

Zootaxa ◽  
2019 ◽  
Vol 4711 (2) ◽  
pp. 349-365
Author(s):  
VLADIMIR A. GUSAKOV ◽  
ANZHELIKA A. SYLAIEVA
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Fresh Water ◽  
Water Body ◽  
Nuclear Power ◽  
Potential Distribution ◽  
Cooling System ◽  
European Continent ◽  
Previous Record ◽  
Sexually Mature

A non-native oligochaete, Bratislavia dadayi (Michaelsen 1905), is recorded from a water body of the cooling system of the Khmelnitsky Nuclear Power Plant (Ukraine). This is the first registration of this species in the central part of the European continent, far from sea and river navigable waterways. The only previous record of B. dadayi in Europe had been from a Belgian estuary. The occurrence in samples taken over several years, and the presence of sexually mature individuals in the Ukrainian population indicate the worm’s successful naturalization in the new habitat. In this paper, we analyze the species’ morphology and abundance in the Ukrainian population and discuss its ecology, current and potential distribution. 

Parasite diversity and microsatellite variability in native and introduced populations of four Neogobius species (Gobiidae)

Parasitology ◽  
2012 ◽  
Vol 139 (11) ◽  
pp. 1493-1505 ◽  
Author(s):  
M. ONDRAČKOVÁ ◽  
A. ŠIMKOVÁ ◽  
K. CIVÁŇOVÁ ◽  
M. VYSKOČILOVÁ ◽  
P. JURAJDA
Keyword(s):  
Species Richness ◽  
Parasite Species ◽  
Drainage System ◽  
River System ◽  
Parasite Fauna ◽  
Source Population ◽  
Parasite Diversity ◽  
Parasite Species Richness ◽  
Introduced Populations ◽  
Microsatellite Diversity

SUMMARYSpecies introduced into new areas often show a reduction in parasite and genetic diversity associated to the limited number of founding individuals. In this study, we compared microsatellite and parasite diversity in both native (lower Danube) and introduced populations of 4 Ponto-Caspian gobies, including those (1) introduced from within the same river system (middle Danube; Neogobius kessleri and N. melanostomus), and (2) introduced from a different river system (River Vistula; N. fluviatilis and N. gymnotrachelus). Microsatellite data confirmed the lower Danube as a source population for gobies introduced into the middle Danube. Both native and introduced (same river system) populations of N. kessleri and N. melanostomus had comparable parasite species richness and microsatellite diversity, possibly due to multiple and/or continual migration/introduction of new individuals and the acquisition of local parasites. Reduced parasite species richness and microsatellite diversity were observed in introduced (different river system) populations in the Vistula. A low number of colonists found for N. fluviatilis and N. gymnotrachelus in the Vistula potentially resulted in reduced introduction of parasite species. Insufficient adaptation of the introduced host to local parasite fauna, together with introduction into an historically different drainage system, may also have contributed to the reduced parasite fauna.

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