MUCIN-TYPEO-GLYCOSYLATION IN HELMINTH PARASITES FROM MAJOR TAXONOMIC GROUPS: EVIDENCE FOR WIDESPREAD DISTRIBUTION OF THE TN ANTIGEN (GALNAC-SER/THR) AND IDENTIFICATION OF UDP-GALNAC:POLYPEPTIDEN-ACETYLGALACTOSAMINYLTRANSFERASE ACTIVITY

2003 ◽  
Vol 89 (4) ◽  
pp. 709-714 ◽  
Author(s):  
Cecilia Casaravilla ◽  
Teresa Freire ◽  
Ramiro Malgor ◽  
Andrea Medeiros ◽  
Eduardo Osinaga ◽  
...  
Keyword(s):  
Helminth Parasites ◽  
Tn Antigen ◽  
Widespread Distribution ◽  
Taxonomic Groups

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 Predictability of helminth parasite host range using information on geography, host traits and parasite community structure

Parasitology ◽  
2016 ◽  
Vol 144 (2) ◽  
pp. 200-205 ◽  
Author(s):  
TAD DALLAS ◽  
ANDREW W. PARK ◽  
JOHN M. DRAKE
Keyword(s):  
Community Structure ◽  
Community Composition ◽  
Parasite Community ◽  
Host Community ◽  
Helminth Parasites ◽  
Permissive Host ◽  
Complex Interactions ◽  
Parasite Ecology ◽  
Taxonomic Groups ◽  
Host Parasite

SUMMARYHost–parasite associations are complex interactions dependent on aspects of hosts (e.g. traits, phylogeny or coevolutionary history), parasites (e.g. traits and parasite interactions) and geography (e.g. latitude). Predicting the permissive host set or the subset of the host community that a parasite can infect is a central goal of parasite ecology. Here we develop models that accurately predict the permissive host set of 562 helminth parasites in five different parasite taxonomic groups. We developed predictive models using host traits, host taxonomy, geographic covariates, and parasite community composition, finding that models trained on parasite community variables were more accurate than any other covariate group, even though parasite community covariates only captured a quarter of the variance in parasite community composition. This suggests that it is possible to predict the permissive host set for a given parasite, and that parasite community structure is an important predictor, potentially because parasite communities are interacting non-random assemblages.

ON THE HELMINTH PARASITES OF THE RED SEA FISHES

1999 ◽  
Vol 3 (4) ◽  
pp. 565-595
Author(s):  
Nahed Abdou ◽  
Samir Biltagy ◽  
Ameen Ashour ◽  
Richard Heckmann
Keyword(s):  
Red Sea ◽  
Helminth Parasites

Benthic community populations near two adjacent northern pulpmill discharges

1997 ◽  
Vol 35 (2-3) ◽  
pp. 381-388 ◽  
Author(s):  
G. P. Thomas ◽  
N. Munteanu
Keyword(s):  
Benthic Community ◽  
Ecological Model ◽  
Relative Proportion ◽  
Benthic Invertebrate ◽  
Treated Effluent ◽  
Spatial Confounding ◽  
Spatial Approach ◽  
Pulp And Paper Effluent ◽  
Taxonomic Groups ◽  
Benthic Invertebrate Communities

Benthic invertebrate communities were investigated as part of the federal Environmental Effects Monitoring programs conducted as required by the amended Pulp and Paper Effluent Regulations (PPER) of the federal Fisheries Act. A Refiner Mechanical (RMP) and larger Kraft pulpmill, both situated on a northern, BC reservoir, discharge secondary-treated effluent within 5 km of each other. Efforts to independently distinguish potential effects associated with these individual discharges were complicated by the proximity of the diffusers, their location within a complex ecological region of a reservoir, and the presence of temporal and spatial confounding influences. A comprehensive examination of the benthic community structure involved the combined assessment of several endpoints (total population numbers, relative proportion of taxonomic groups, and species richness). A tiered, spatial approach, based on a reservoir ecological model (Thornton et al., 1981), was adapted to assess and distinguish community structures and reservoir- and mill-related influences. Results suggested that effects associated with the two different mills could be distinguished based on subtle and distinct differences in benthic community profiles.

scholarly journals Where we Come from and where to Go: Six Decades of Botanical Studies in the Mediterranean Wetlands, with Sardinia (Italy) as a Case Study

Wetlands ◽  
2021 ◽  
Vol 41 (6) ◽  
Author(s):  
Alba Cuena-Lombraña ◽  
Mauro Fois ◽  
Annalena Cogoni ◽  
Gianluigi Bacchetta
Keyword(s):  
Vascular Plants ◽  
Vascular Plant ◽  
Regional Scale ◽  
Temporary Ponds ◽  
Evolutionary Strategies ◽  
Plant Groups ◽  
Research Themes ◽  
The Mediterranean ◽  
Taxonomic Groups ◽  
Water Saturated

AbstractPlants are key elements of wetlands due to their evolutionary strategies for coping with life in a water-saturated environment, providing the basis for supporting nearly all wetland biota and habitat structure for other taxonomic groups. Sardinia, the second largest island of the Mediterranean Basin, hosts a great variety of wetlands, of which 16 are included in eight Ramsar sites. The 119 hydro- and hygrophilous vascular plant taxa from Sardinia represent the 42.6% and 37.9% of the number estimated for Italy and Europe, respectively. Moreover, around 30% of Sardinia’s bryological flora, which is made up of 498 taxa, is present in temporary ponds. An overview at regional scale considering algae is not available, to our knowledge, even though several specific studies have contributed to their knowledge. In order to find the most investigated research themes and wetland types, identify knowledge gaps and suggest recommendations for further research, we present a first attempt to outline the work that has been hitherto done on plants in lentic habitats in Sardinia. Three plant groups (algae, bryophytes and vascular plants), and five research themes (conservation, ecology, inventory, palaeobotany and taxonomy) were considered. After a literature review, we retained 202 papers published from 1960 to 2019. We found that studies on vascular plants, as plant group, were disproportionately more numerous, and inventories and ecology were the most investigated research themes. Although efforts have recently been made to fill these long-lasting gaps, there is a need for updating the existing information through innovative methods and integrative approaches.

scholarly journals Annelid Diversity: Historical Overview and Future Perspectives

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 129
Author(s):  
María Capa ◽  
Pat Hutchings
Keyword(s):  
State Of The Art ◽  
Molecular Taxonomy ◽  
Evolutionary Relationships ◽  
Diverse Group ◽  
Future Perspectives ◽  
Special Issue ◽  
Species Numbers ◽  
Species Complexes ◽  
Taxonomic Groups ◽  
A New Species

Annelida is a ubiquitous, common and diverse group of organisms, found in terrestrial, fresh waters and marine environments. Despite the large efforts put into resolving the evolutionary relationships of these and other Lophotrochozoa, and the delineation of the basal nodes within the group, these are still unanswered. Annelida holds an enormous diversity of forms and biological strategies alongside a large number of species, following Arthropoda, Mollusca, Vertebrata and perhaps Platyhelminthes, among the species most rich in phyla within Metazoa. The number of currently accepted annelid species changes rapidly when taxonomic groups are revised due to synonymies and descriptions of a new species. The group is also experiencing a recent increase in species numbers as a consequence of the use of molecular taxonomy methods, which allows the delineation of the entities within species complexes. This review aims at succinctly reviewing the state-of-the-art of annelid diversity and summarizing the main systematic revisions carried out in the group. Moreover, it should be considered as the introduction to the papers that form this Special Issue on Systematics and Biodiversity of Annelids.

Widespread distribution of prophages signaling the potential for adaptability and pathogenicity evolution of Ralstonia solanacearum species complex

Genomics ◽  
2021 ◽  
Author(s):  
Osiel Silva Gonçalves ◽  
Flávia de Oliveira Souza ◽  
Fernanda Prieto Bruckner ◽  
Mateus Ferreira Santana ◽  
Poliane Alfenas-Zerbini
Keyword(s):  
Ralstonia Solanacearum ◽  
Species Complex ◽  
Widespread Distribution
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