The helminth parasites of two sympatric species of the genus Apodemus (Rodentia, Muridae) from south-eastern Slovakia

2010 ◽  
Vol 55 (4) ◽  
Author(s):  
Jarmila Ondríková ◽  
Dana Miklisová ◽  
Alexis Ribas ◽  
Michal Stanko
Keyword(s):  
Sympatric Species ◽  
Helminth Fauna ◽  
Hymenolepis Diminuta ◽  
Individual Species ◽  
Helminth Parasites ◽  
Heligmosomoides Polygyrus ◽  
Mean Intensity ◽  
Host Ecology ◽  
Taenia Taeniaeformis ◽  
Rodent Populations

AbstractThe helminths of two sympatric species of rodents, the striped field mouse Apodemus agrarius and the yellow-necked mouse, Apodemus flavicollis from Slovakia were studied to determine whether there are similarities in the composition of the helminth fauna of two closely related host species living in the same area. A total of twelve species of helminths were identified in these rodent populations, including Brachylaima sp. (Trematoda); Hymenolepis diminuta (Rudolphi, 1819), Mesocestoides sp. larvae, Rodentolepis fraterna (Stiles, 1906), Rodentolepis straminea (Goeze, 1782), Skrjabinotaenia lobata (Baer, 1925), Taenia taeniaeformis larvae (Batsch, 1786) (Cestoda); Aonchotheca annulosa (Dujardin, 1845), Heligmosomoides polygyrus (Dujardin, 1845), Heterakis spumosa Schneider, 1866, Mastophorus muris (Gmelin, 1790) and Syphacia stroma (Linstow, 1884) (Nematoda). In A. agrarius, H. polygyrus was the most prevalent, as well as the most abundant helminth, but R. fraterna was the species with the highest mean intensity. In contrast, S. stroma dominated the A. flavicollis helminth fauna with the highest prevalence, mean abundance and mean intensity. Both rodent populations harboured nine helminth species, although the mean individual species richness was significantly higher in A. agrarius than in A. flavicollis. The analysis of helminth diversity at both component and infracommunity levels revealed differences between the two rodent populations, which are most likely attributable to the specific host ecology.

Gastrointestinal helminth parasites of the black rat (Rattus rattus) in Abeokuta, southwest Nigeria

1997 ◽  
Vol 71 (3) ◽  
pp. 217-220 ◽  
Author(s):  
C.F. Mafiana ◽  
M.B. Osho ◽  
S. Sam-Wobo
Keyword(s):  
Rattus Rattus ◽  
Common Species ◽  
Hymenolepis Diminuta ◽  
Helminth Parasites ◽  
Trichuris Muris ◽  
Mean Intensity ◽  
Black Rat ◽  
Southwest Nigeria ◽  
Moniliformis Moniliformis ◽  
Taenia Taeniaeformis

AbstractA survey of 612 black rats, Rattus rattus (282 males and 330 females), for infections with helminth parasites was carried out in Abeokuta, in southwest Nigeria. Three hundred and ninety six (64.7%) were infected with one or more of seven species of helminths comprising three cestodes (Hymenolepis diminuta, Taenia taeniaeformis (cyst) and Raillietina sp.) three nematodes (Mastophorus muris, Trichuris muris and Syphacia sp.) and one acanthocephalan (Moniliformis moniliformis). Although the prevalence of infection in males (76.6%) was more than in females (54.5%) (P< 0.01), there was no difference in the mean intensity of infection, MI, (males = 11.6 ± 0.94, females = 11.1 ± 1.56). Among the different weight classes, rats of 100–130g were more infected (89.3%) and had the highest mean intensity (MI = 21.6) than those that weighed <100g (47.1%, MI = 6.4) and >130g (73.9%, MI = 9.3). Moniliformis moniliformis was the most common species encountered (39.2%) and had the highest mean intensity in both sexes ( = 7.4 ± 0.74). Considering the rat-man proximity, this finding has considerable public health implications.

scholarly journals Helminth fauna of Mus musculus Linnaeus, 1758 from the suburban area of Belgrade, Serbia

2008 ◽  
Vol 60 (4) ◽  
pp. 609-617 ◽  
Author(s):  
D.S. Kataranovski ◽  
Olivera Vukicevic-Radic ◽  
Milena Kataranovski ◽  
Dusica Radovic ◽  
Ivana Mirkov
Keyword(s):  
Mus Musculus ◽  
Infection Intensity ◽  
Nematode Species ◽  
Helminth Fauna ◽  
Suburban Area ◽  
Trichuris Muris ◽  
Heligmosomoides Polygyrus ◽  
Syphacia Obvelata ◽  
Aspiculuris Tetraptera ◽  
Taenia Taeniaeformis

The helminth fauna of the house mouse (Mus musculus Linnaeus, 1758) was studied on the basis of 429 host individuals from the suburban area of Belgrade. Eleven helminth species were recorded: three cestode species - Catenotaenia pusilla, Rodentolepis fraterna, and Cysticercus (= Strobilocercus) fasciolaris [larval stage of Taenia taeniaeformis (Batsch, 1821)]; and eight nematode species - Heligmosomoides polygyrus, Syphacia sp., Aspiculuris tetraptera, Syphacia obvelata, Heterakis spumosa, Trichuris muris, Mastophorus muris, and Gongylonema sp. Within the general helminth fauna, H. polygyrus was found to be the most prevalent species (39.2%) and caused the highest infection intensity. Prevalences of A. tetraptera, C. pusilla, and S. obvelata ranged from 12.8% to 6.1%, while the remaining species showed prevalences ranging from 4.9% (for Syphacia sp.) to 0.2% (for Gongylonema sp.). All the species found in males were also present in females, with the exceptions of M. muris and Gongylonema sp. No significant differences were found between males and females regarding prevalence (P%), mean infection intensity (MI), or mean abundance (MA).

The Longevity of some Species of Helminth Parasites in Naturally Acquired Infections of the Lesser Black-backed Gull, Larus fuscus L., in Britain

1973 ◽  
Vol 47 (3) ◽  
pp. 329-338 ◽  
Author(s):  
Catherine Ellis ◽  
I. C. Williams
Keyword(s):  
Helminth Fauna ◽  
Individual Species ◽  
Helminth Parasites ◽  
Intensity Of Infection ◽  
Larus Fuscus ◽  
General Decline ◽  
In Captivity ◽  
Marked Decline ◽  
One Year ◽  
First Time

1. Ninety-six lesser black-backed gulls, Larus fuscus L., captured at about 6 weeks of age, were kept in captivity for up to 2⅛ years. At intervals some gulls were killed and examined for helminth parasites, of which 14 species were found comprising 4 species of Trematoda, 5 species of Cestoda and 5 species of Nematoda.2. Nine of the 14 species are commonly found in Holarctic gulls and may be regarded as characteristic members of the helminth fauna of these birds. Six species are recorded from L. fuscus for the first time.3. The life span of different species of helminth parasites in L. fuscus varied from 2 months to 2⅛ years; few specimens lived in their host for more than one year. During captivity there was a marked decline in the variety of the helminth fauna of individual gulls, as well as a general decline in the incidence and intensity of infection with individual species of parasites. There was one exception, the tape-worm Tetrabothrius cylindraceus, which increased in incidence and maintained a fairly even intensity of infection in L. fuscus over 21 months. The results are discussed in relation to the ecology of the parasite and the host.

scholarly journals A Survey of Helminth Infections in the Black Rat from Stara Zagora District, Bulgaria

2017 ◽  
Vol 40 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Petar T. Iliev ◽  
Georgi Zh. Georgiev ◽  
Zvezdelina T. Kirkova ◽  
Borislava G. Chakarova
Keyword(s):  
Rattus Rattus ◽  
Hymenolepis Diminuta ◽  
Helminth Parasites ◽  
Hymenolepis Nana ◽  
Trichuris Muris ◽  
Black Rat ◽  
Helminth Infections ◽  
Syphacia Obvelata ◽  
Aspiculuris Tetraptera ◽  
Taenia Taeniaeformis

AbstractA field study was conducted to disclose the prevalence of different helminth parasites in the black rat, Rattus rattus, in some regions of Stara Zagora district, Bulgaria. Out of 67 examined rats, 53 (79.1%) were found to be positive. Helminths of three classes were detected such as Cestoda: Hymenolepis diminuta (47.8%), Hymenolepis nana (43.3%), Taenia taeniaeformis larvae (7.5%), Taenia polyacantha larvae (1.5%); Secernentea: Syphacia obvelata (4.5%), Aspiculuris tetraptera (3.0%) and Adenophorea: Capillaria hepatica (9.0%), Trichuris muris (3.0%). Of all the investigated rats, 27 (40.3%) were infected by one helminth species and 26 (38.8%) by more than one. Hymenolepis diminuta was a predominant species in cases of single infections (23.9%). The most frequent co-infections were observed by H. nana and H. diminuta (16.4%).

Influence of host weight, sex and reproductive status on helminth parasites of the wild rabbit, Oryctolagus cuniculus, in Navarra, Spain

1999 ◽  
Vol 73 (3) ◽  
pp. 221-225 ◽  
Author(s):  
X. Molina ◽  
J.C. Casanova ◽  
C. Feliu
Keyword(s):  
Oryctolagus Cuniculus ◽  
Reproductive Status ◽  
Wild Rabbit ◽  
Helminth Parasites ◽  
Northern Spain ◽  
Mean Intensity ◽  
Pregnant Females ◽  
Testicular Weight ◽  
The Mean ◽  
Reproductive Females

A study was carried out in Navarra (northern Spain) on the influence of the weight, sex and reproductive status (lactant, pregnant or lactant + pregnant females and testicular weight for males) of the wild rabbit (Oryctolagus cuniculus) on two cestodes species: Andrya cuniculi and Mosgovoyia ctenoides and four intestinal nematodes: Graphidium strigosum, Trichostrongylus retortaeformis, Nematodiroides zembrae and Dermatoxys hispaniensis. A significantly higher prevalence of A. cuniculi was detected in lactant + pregnant females compared with non-breeding females. Trichostrongylus retortaeformis and N. zembrae showed a significantly higher mean intensity in lactant and lactant + pregnant females than in non-reproductive females. Trichostrongylus retortaeformis presented a higher mean intensity in females than in males, and the mean intensity of the same parasite species was significantly lower in active and inactive males compared with lactant and lactant + pregnant females. There were no significant differences between sexes in the prevalence of helminth parasites. No significant correlation was detected between host weight and the intensity (of infection) of helminths studied. No significant differences in the prevalence and mean intensity of the two cestode species were observed in the three weight categories studied (kittens, juveniles and adults). The prevalence of G. strigosum and mean intensity of T. retortaeformis were significantly higher in older heavier animals than in juveniles.

Checklist of helminth parasites of cetaceans from Brazil

Zootaxa ◽  
2010 ◽  
Vol 2548 (1) ◽  
pp. 57 ◽  
Author(s):  
JOSÉ L. LUQUE ◽  
LUÍS C. MUNIZ-PEREIRA ◽  
SALVATORE SICILIANO ◽  
LIEGE R. SIQUEIRA ◽  
MAGDA S. OLIVEIRA ◽  
...  
Keyword(s):  
Helminth Fauna ◽  
Helminth Species ◽  
Helminth Parasites ◽  
Helminthological Collection ◽  
Unpublished Information

Based on published records and unpublished information retrieved from the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC), a checklist of the helminth parasites of cetaceans from Brazil was generated. A total of 215 records of 18 species of helminths were associated with 22 species of cetaceans in Brazil. Six species determined only to genus were also included. The majority of these helminth species are nematodes (33.3%) and trematodes (33.3%), which total 66.6% of the helminth fauna of cetaceans from Brazil. The Acanthocephala represents 22.2% of species, and the Cestoda 11.1%.

The Parasites of the Muskrat (Ondatra zibethica L.) in the British Isles

Parasitology ◽  
1936 ◽  
Vol 28 (3) ◽  
pp. 395-402 ◽  
Author(s):  
Tom Warwick
Keyword(s):  
North America ◽  
Rattus Norvegicus ◽  
Common Species ◽  
Helminth Fauna ◽  
Water Vole ◽  
British Isles ◽  
Local Fauna ◽  
Capillaria Hepatica ◽  
Arvicola Amphibius ◽  
Taenia Taeniaeformis

Of the five species of helminths of the British muskrat (Ondatra zibethica L.), two (Notocotylus quinqueserialis and Hymenolepis evaginata) have been introduced with the animal. The three other species of helminths (Capillaria hepatica, Taenia taeniaeformis larva and T. tenuicollis larva) have probably been largely re-acquired from the local fauna. All of the three common species of ectoparasites [Laelaps multispinosus (Tetragonyssus spiniger), Listrophorus validus and Dermacarus n.sp.] occur in North America. Three other species (Tyroglyphus sp., Myobia n.sp., Polyplax sp.) have occurred as single individuals, the last species having probably been acquired from the water vole. Introduction into Britain has greatly depleted the original helminth fauna as regards number of species and individuals; but not so with the ectoparasites. Lists of the parasites hitherto recorded from the muskrat are given and those found in brown rats (Rattus norvegicus Erx.) and water voles (Arvicola amphibius amphibius L.).

Rehydration methods to recover cysticercoids of the rat tapeworm Hymenolepis diminuta from dry flour beetle carcasses

2016 ◽  
Vol 91 (4) ◽  
pp. 470-478 ◽  
Author(s):  
H.M.-H. Chin ◽  
L.T. Luong ◽  
A.W. Shostak
Keyword(s):  
Developmental Stages ◽  
Hymenolepis Diminuta ◽  
Helminth Parasites ◽  
Post Mortem ◽  
Intensity Of Infection ◽  
Internal Organs ◽  
Flour Beetle ◽  
Terrestrial Arthropods ◽  
Early Developmental Stages ◽  
Early Developmental

AbstractTerrestrial arthropods host a variety of helminth parasites, yet quantifying the intensity of infection in these hosts post-mortem is challenging because carcasses may desiccate quickly. We recovered cysticercoids of Hymenolepis diminuta from desiccated flour beetle (Tribolium confusum) carcasses by modifying a published insect rehydration procedure. Without rehydration, carcasses dissected more than 1 day post-mortem had noticeable degradation of cysticercoids. Mild rehydration (soaking in water only for 2 days, or 0.5–10% KOH for 1 h followed by 1 day in water, or 0.5% KOH for 1 day) left carcasses tough and time-consuming to dissect, but all parasites could be recovered and were similar in body size to fresh cysticercoids. Moderate rehydration (5–10% KOH for 1 day) allowed all parasites to be recovered and facilitated dissection by partially dissolving internal organs of the beetle while causing little degradation of the cysticercoids. Harsh rehydration (5–10% KOH for 1 day followed by 5 days in water) not only dissolved internal beetle tissues but also severely damaged cysticercoids, such that parasite counts were unreliable. The degree of initial carcass desiccation had little effect on results following rehydration. However, regardless of treatment used, intact cercomers were rarely retained on rehydrated cysticercoids. Rehydration was less successful on early developmental stages of the parasite, which were recovered reliably only as they neared the cysticercoid stage. This method has utility for studies of parasite-induced mortality by permitting accurate and reliable parasite counts from dead, desiccated hosts.

scholarly journals Hymenolepis diminuta and Rodentolepis nana (Hymenolepididae: Cyclophyllidea) in urban rodents of Gran La Plata: association with socio-environmental conditions

2017 ◽  
Vol 92 (5) ◽  
pp. 549-553 ◽  
Author(s):  
B. Fitte ◽  
M.R. Robles ◽  
A. Dellarupe ◽  
J.M. Unzaga ◽  
G.T. Navone
Keyword(s):  
Environmental Conditions ◽  
Rattus Norvegicus ◽  
Animal Health ◽  
Rattus Rattus ◽  
Zoonotic Diseases ◽  
Hymenolepis Diminuta ◽  
Water Bodies ◽  
Morphometric Characters ◽  
Mean Intensity ◽  
La Plata

AbstractThe aim of this survey was to study two Hymenolepididae species in urban rodents, Rattus rattus and Rattus norvegicus, and to analyse factors that favour their presence in the environment and pose a sanitary risk. Hymenolepis diminuta and Rodentolepis nana were found in R. rattus and R. norvegicus in different proportions. Values of prevalence, mean abundance and mean intensity were recorded, and new morphometric characters were described, adding to previously known information. No significant differences were found. However, the results revealed that there is a tendency for these parasites to develop in areas with deficient socio-structural conditions and in water bodies. This study thereby shows that certain areas on the periphery of the Gran La Plata favour the existence of rodents, which act as sentinels of zoonotic diseases, and stresses the need to take action to minimize them in order to avoid putting human and animal health at risk.

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