scholarly journals Helminth community structure in two species of arctic-breeding waterfowl

2016 ◽  
Vol 5 (3) ◽  
pp. 263-272 ◽  
Author(s):  
C.L. Amundson ◽  
N.J. Traub ◽  
A.J. Smith-Herron ◽  
P.L. Flint
Keyword(s):  
Community Structure ◽  
Helminth Community ◽  
Breeding Waterfowl

The dynamics of intestinal helminth communities in eels Anguilla anguilla in a small stream: long-term changes in richness and structure

Parasitology ◽  
1993 ◽  
Vol 107 (1) ◽  
pp. 71-78 ◽  
Author(s):  
C. R. Kennedy
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Recovery Period ◽  
Intestinal Helminth ◽  
Helminth Community ◽  
Component Community ◽  
Small Stream ◽  
Habitat Changes ◽  
Species Richness And Diversity ◽  
Helminth Communities

SummaryThe prediction that species richness and diversity of intestinal helminth communities in eels would change over time in response to habitat changes was tested over a period of 13 years in a small stream subjected to extensive human management. Nearly all measures of helminth community structure adopted indicated a decline in richness and diversity over the first 6 years followed by a recovery over the last few years to levels unexpectedly close to those at the start of the investigation. Changes in total number of species suggested that the component community was far richer (from 3–9 species) at the end of the period. By contrast, changes in diversity and dominance measures revealed less variation than expected and suggested that there was an underlying stability of community structure characterized by high dominance by a single species, although the identity of this changed, low diversity and a large proportion of the eel population harbouring 0 or only 1 species. A similar pattern of changes was recorded in the infra-communities, where values of species richness and diversity were very similar at the commencement and termination of the study. It appeared that those helminths that colonized in the recovery period contributed to community richness but had little impact on community structure. The helminth communities clearly did change in response to habitat changes, and the evidence for a fixed number of niches and an underlying constancy in helminth community structure in eels is evaluated.

scholarly journals Helminth Parasite Communities of Two Scorpaena spp. (Scorpaenidae) From Reefs of Veracruz, Mexico

2018 ◽  
Vol 10 (9) ◽  
pp. 504
Author(s):  
Jesús Montoya-Mendoza ◽  
Sandra Edith Badillo-López ◽  
Isabel Araceli Amaro-Espejo ◽  
María del Refugio Castañeda-Chávez ◽  
Fabiola Lango-Reynoso ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
National Park ◽  
Common Species ◽  
Shannon Index ◽  
Marine Fishes ◽  
Helminth Community ◽  
Component Community ◽  
Parasite Communities ◽  
Southern Gulf Of Mexico

Scorpaena brasiliensis and S. plumieri are relevant fish species in reef systems, but little is known about their parasitic helminth communities and their structure. This paper describes such community in terms of species richness and diversity. A helminthological study was conducted on 33 specimens of S. brasiliensis and 36 S. plumieri, captured in the Pajaros and Cabezo Reefs, in the Veracruz Reef System National Park (VRSNP), Veracruz, Mexico. The helminth community structure was analyzed in both host species. A total of 10 parasitic species was registered in S. brasiliensis (5 digeneans, 1 cestode, 3 nematodes, 1 acanthocephalan), while S. plumieri hosted 11 species (4 digeneans, 1 monogenean, 1 cestode, 4 nematodes, 1 acanthocephalan), with 8 common species. The species with the highest prevalence were Pseudocapillaria (Icthyocapillaria) sp., with 18.2% and 19.4% in S. brasiliensis and S. plumieri, respectively. Component community richness for S. brasiliensis was S = 10, with Shannon index diversity value of H’ = 2.08. For S. plumieri, such values were of S = 11 and H’ = 1.91. Richness and diversity in the component and infracommunity levels for both hosts are lower than in other parasite communities of marine fishes in the southern Gulf of Mexico.

scholarly journals HELMINTH COMMUNITY STRUCTURE IN AN EXPANDING WHITE-WINGED DOVE (ZENAIDA ASIATICA ASIATICA) POPULATION

2002 ◽  
Vol 38 (1) ◽  
pp. 68-74 ◽  
Author(s):  
Jason W. Glass ◽  
Alan M. Fedynich ◽  
Michael F. Small ◽  
Steve J. Benn
Keyword(s):  
Community Structure ◽  
Zenaida Asiatica ◽  
Helminth Community

scholarly journals First report of the intestinal helminth community in the broad-headed spiny-rat Clyomys laticeps (Rodentia, Echimyidae)

2020 ◽  
Vol 29 (3) ◽  
Author(s):  
Fernanda Oliveira Rodrigues ◽  
Natália Oliveira Leiner ◽  
Claire Pauline Röpke Ferrando ◽  
Beatriz Elise de Andrade-Silva ◽  
Rosana Gentile ◽  
...  
Keyword(s):  
Community Structure ◽  
Nematode Species ◽  
First Record ◽  
Intestinal Helminth ◽  
Helminth Community ◽  
New Host ◽  
First Report ◽  
Central Brazil ◽  
Prevalent Species ◽  
New Host Species

Abstract The broad-headed spiny rat, Clyomys laticeps, is an echimyid rodent found in open areas of Cerrado and Pantanal biomes in central Brazil and Paraguay. Little is known about the parasites associated with this semi-fossorial species, as no previous studies have been conducted on their helminth fauna. The aim of this study was to report the helminth community structure of C. laticeps inhabiting Serra de Caldas Novas State Park, a Cerrado area in central Brazil. Trappings were carried out in dry grasslands from January to October 2016, and the large and small intestines of 14 C. laticeps individuals were examined for the presence of helminths. Three nematode species were found: Fuellebornema almeidai, Pterygodermatites (Paucipectines) sp., and Subulura forcipata, and 85.7% of the studied species were infected with at least one of these helminths. F. almeidai was the most prevalent species among hosts, and S. forcipata was the most abundant. This study is the first report on helminth community structure in C. laticeps. We report a new host species and increase the known geographical range of F. almeidai, and provide the first record of Pterygodermatites (Paucipectines) sp. infecting echimyids. This is also the first report of S. forcipata in a mammal host.

scholarly journals Helminth community structure study on urban and forest blackbird (Turdus merula L.) populations in relation to seasonal bird migration on the south Baltic Sea coast (NW Poland)

2014 ◽  
Vol 51 (2) ◽  
pp. 117-129 ◽  
Author(s):  
I. Rząd ◽  
J. Sitko ◽  
R. Sałamatin ◽  
D. Wysocki
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Bird Migration ◽  
Natural Habitat ◽  
Structure Study ◽  
Helminth Fauna ◽  
Urban Habitat ◽  
Helminth Community ◽  
Intensity Of Infection ◽  
Sea Coast

Abstract The aim of the study was to compare helminth community structure of urban and forest blackbird populations. 24 helminth species in 98 blackbirds were found. Higher species richness was noted in the forest population of the blackbird (23 species) in comparison to the urban population (14 species). The response of the helminth fauna to a synanthropic habitat, contrary to a natural habitat, consists in a significant reduction in most parasitological parameters. Higher species richness has been noted in spring (17 species) than in autumn (14 species). Urban habitat, in contrast to the forest, may cause changes in the abundance of helminth communities in male and female blackbirds. The helminth fauna of nestlings, in spite of low species richness is characterized by a higher prevalence and intensity of infection in comparison to blackbirds feeding on their own. Helminth fauna of the blackbird seems to be a good indicator of environmental quality.

Helminth community structure in the Argentinean bufonid Melanophryniscus klappenbachi: importance of habitat use and season

2014 ◽  
Vol 113 (10) ◽  
pp. 3639-3649 ◽  
Author(s):  
Monika I. Hamann ◽  
Arturo I. Kehr ◽  
Cynthya E. González
Keyword(s):  
Community Structure ◽  
Habitat Use ◽  
Helminth Community

Variation in the helminth community structure ofThrichomys pachyurus(Rodentia: Echimyidae) in two sub-regions of the Brazilian Pantanal: the effects of land use and seasonality

2009 ◽  
Vol 84 (3) ◽  
pp. 266-275 ◽  
Author(s):  
R. Simões ◽  
R. Gentile ◽  
V. Rademaker ◽  
P. D'Andrea ◽  
H. Herrera ◽  
...  
Keyword(s):  
Land Use ◽  
Community Structure ◽  
Helminth Species ◽  
Population Increase ◽  
Helminth Community ◽  
Wet Season ◽  
In The Wild ◽  
Highly Correlated ◽  
Seasonally Flooded ◽  
Brazilian Pantanal

AbstractThe Pantanal is a large ecosystem located in South America. This preserved area is seasonally flooded due to abundant rainfall during the summer and the subsequent overflow of the Paraguai River. In this paper, we examine the helminth community structure in the wild rodentThrichomys pachyurusduring the wet and dry seasons in two locations of the preserved and cattle ranching areas in the Southern Pantanal. We identified 12 species of helminth, and, although we did not find any differences in species richness between locations within the Pantanal, we found that richness was higher during the wet season. Helminth species were largely aggregated in both farm locations and during seasons. The most common helminth species were more abundant during the dry season than during the wet season, which may have been due to the increased habitat availability and rodent population increase. The intensity of the infection also followed the same pattern for most helminths. The trichostrongylids (Heligmostrongylus crucifer,H. almeidaiandPudica cercomysi) were dominant at both farm locations. The land use of each area was not correlated with helminth diversity. However, species composition of the helminth community ofT. pachyurusdiffered between locations and may be correlated with environmental differences between the habitats. The seasonality of the Pantanal was highly correlated with helminth parasitism inT. pachyurus.

Biotic and abiotic effects on the intestinal helminth community of the brown ratRattus norvegicusfrom Rio de Janeiro, Brazil

2014 ◽  
Vol 90 (1) ◽  
pp. 21-27 ◽  
Author(s):  
R.O. Simões ◽  
J.L. Luque ◽  
R. Gentile ◽  
M.C.S. Rosa ◽  
S. Costa-Neto ◽  
...  
Keyword(s):  
Community Structure ◽  
Rio De Janeiro ◽  
Abundant Species ◽  
Helminth Species ◽  
Intestinal Helminth ◽  
Nippostrongylus Brasiliensis ◽  
Helminth Community ◽  
Public Health Importance ◽  
Strongyloides Venezuelensis ◽  
Moniliformis Moniliformis

AbstractRattus norvegicushas attracted much attention because of its role as a reservoir of zoonotic pathogens. This work aimed to identify the intestinal helminth species inR. norvegicusand to analyse the effects of temperature, rainfall, host age and sex on the helminth community structure. Moreover, this study investigated the possible associations among helminth species in an urban population ofR. norvegicusin São Gonçalo, Rio de Janeiro, sampled during the rainy and dry seasons over a span of 2 years. A total of 112 rats were infected by six species of helminths. The nematodeNippostrongylus brasiliensiswas the most prevalent and abundant species, with high mean intensity in both seasons, followed byStrongyloides venezuelensis,Heterakis spumosa,Raillietinasp.,Hymenolepis nanaandMoniliformis moniliformis.Co-occurrence was found betweenN. brasiliensisandS. venezuelensisand betweenN. brasiliensisandH. spumosa.The occurrence ofS. venezuelensiswas related to rainfall. The understanding of the helminth community structure in this synanthropic rat provides basic information on parasites of public health importance, as two helminth species (H. nanaandM. moniliformis) recovered from rats in the urban area studied can infect humans.

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