Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 12

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  nematode species
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Description of Raphidascaris (Ichthyascaris) multipapillata sp. nov., redescription of Hysterothylacium simile Li et al., 2013 and new records of some other ascaridoid and seuratoid nematodes from marine fishes in Japan

100%
Moravec F., Nagasawa K., Nitta M.
Acta Parasitologica
|
2021
|
tom 66
|
nr 2
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Estimation of distribution parameters of some avian parasites

100%
Lonc E., Okulewicz A., Kopocinska I.
Wiadomości Parazytologiczne
|
1997
|
tom 43
|
nr 2
Occurrence of nematodes (mostly dominating and common species of Porrocaecum ensicaudatum and P. semiteres) in host populations of birds (Turdus merula, T. philomelos, Sturnus vulgaris and Scolopax rusticola) was summarized in frequency distributions, and tests of agreement with the Poisson model as well as the modified binomial have been computed. Comparisons of the observed frequencies with the expected ones showed the high values (3 - 257) of the coefficient of dispersion, the so-called „overdispersion", characteristic for the negative binomial which is an extension of the Poisson model. A nearly perfect fitness of the counted (observed) with the expected frequencies was found for S. vulgaris both in the analysis of nematode metapopulation and their common species of P. ensicaudatum. Some deviations from the expectations were found for tracing of all nematode species distributions in T. merula, T. philomelos. On the other hand, the same model (negative binomial distribution according to moment method) has fitted quite well to each for common or dominating, nematode species.
3

Morphometrical and genetic comparison of two nematode species: H. spumosa and H. dahomensis (Nematoda, Heterakidae)

84%
Ribas A., Bellocq J. G., Ros A., Ndiaye P. I., Miquel J.
Acta Parasitologica
|
2013
|
tom 58
|
nr 3
Heterakis is a genus of parasitic nematodes, the majority of which are found in ground-feeding birds and only rarely in mammals. The best-known species is Heterakis spumosa, a parasite associated with the cosmopolitan invasive rodent Rattus rattus of Asiatic origin. Heterakis dahomensis was described in 1911 as a parasite of the Gambian giant rat (Cricetomys gambianus) from Benin (Africa), subsequently synonymized to H. spumosa by Hall (1916). The study of helminths in African rodents is scarce and patchy. Since the original description of H. dahomensis, there have been only a few reports from Africa of species belonging to the genus Heterakis and the validity of this species has never in fact been confirmed or rejected. In the present study individual Heterakis spp. were collected from C. gambianus from Senegal. The morphological data taken point to differences between Heterakis dahomensis and H. spumosa, specifically in the number of tail papillae in males and in the vulva cuticular processes of females. In addition, molecular data revealed differences between these taxa and so H. dahomensis should be considered as a valid species. Moreover, recent changes in the systematics of the genus Cricetomys mean that it is now necessary to study the morphology and genetics of the Heterakis specimens collected from Cricetomys spp. (previously assigned to C. gambianus) in order to determine their taxonomic status as either H. dahomensis o H. spumosa.
4

Redescription of two species of cystidicolid nematodes (Spirurina: Cystidicolidae) from Notopterus notopterus (Osteichthyes) in Thailand

84%
Moravec F., Pachanawan A., Kamchoo K.
Acta Parasitologica
|
2016
|
tom 61
|
nr 2
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Parasitic nematodes of pumpkinseed sunfish [Lepomis gibbosus L., 1758] from warm-water canal of a power plant in Szczecin, Poland

67%
Pilecka-Rapacz M., Sobecka E.
Wiadomości Parazytologiczne
|
2008
|
tom 54
|
nr 3
213-216
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The occurrence of three species of the genus Oscheius Andrassy, 1976 (Nematoda: Rhabditida) in Iran

67%
Valizadeh A., Goldasteh S., Rafiei-Karahroodi Z., Pedram M.
Journal of Plant Protection Research
|
2017
|
tom 57
|
nr 3
Due to importance and effectiveness of some entomopathogenic or insect parasitic nematodes in controlling of agricultural pests, or pests of non-agricultural plants, a study was conducted in order to identify the species of this group of nematodes in city of Tehran. As the result, three species belonging to the genus Oscheius were recovered in association with bark samples having the bark beetle galleries. Morphological and molecular data were provided for two recently recovered species of the genus, namely O. necromenus and O. onirici. Molecular data were also provided for a recently recovered isolate of O. tipulae. All three species were recovered in association with bark samples collected from dead trees in the city of Tehran. Morphological characters and morphometric data of the two aforementioned species are in accordance with the data given in their original descriptions. One recovered individual from a small bark sample characterized by its short body length was sequenced for its 28S and internal transcribed spacer (ITS) rDNA loci, and the results of BLAST search using the newly obtained partial sequences revealed that it belonged to O. tipulae. Molecular phylogenetic studies revealed recently sequenced Iranian populations of O. onirici and O. tipulae forming a clade with other isolates/populations of these species in ITS tree with maximal Bayesian posterior probability (BPP), and presently sequenced isolates of O. tipulae and O. necromenus form a clade with other isolates of these species in 28S tree. The two species O. onirici and O. necromenus were reported in Iran for the first time.
7

Philometroides acanthopagri sp. nov., a new philometrid (Nematoda, Philometridae) from the musculature of Acanthopagrus latus (Sparidae) from marine waters of Iraq

67%
Moravec F., Jassim A. A. R., Al-Salim N. K.
Acta Parasitologica
|
2012
|
tom 57
|
nr 4
new nematode species, Philometroides acanthopagri sp. nov. (Philometridae), is described from gravid and subgravid specimens found in the musculature near pectoral fins and in nasal cavity of the yellowfin seabream Acanthopagrus latus (Houttuyn) (Sparidae, Perciformes) from marine waters off the coast of southern Iraq. Based on light and scanning electron microscopical examination, the new species differs from its congeners in a combination of morphological and biometrical features. It is the first species of Philometroides reported from a sparid fish and the first representative of this genus recorded from fishes in the Arabian Gulf. A key to Philometroides species parasitizing marine and brackish-water fishes is provided.
8

Morphological and genetic characterization of the poorly known species Subulura chinensis Schwartz, 1926 (Nematoda: Ascaridida) from Athene noctua (Scopoli) (Strigiformes: Strigidae)

67%
Guo N., Zhang L.-P., Li L.-W., Li L.
Acta Parasitologica
|
2019
|
tom 64
|
nr 3
9

Dichelyne (Dichelyne) spinigerus sp. nov. (Nematoda: Cucullanidae) from the marine fish Otolithes ruber (Sciaenidae) off Iran and first description of the male of Philometra otolithi Moravec et Manoharan, 2013 (Nematoda: Philometridae)

67%
Moravec F., Khosheghbal M., Pazooki J.
Acta Parasitologica
|
2014
|
tom 59
|
nr 2
Recent parasitological examinations of the marine perciform fish (tigerteeth croaker) Otolithes ruber (Bloch et Schneider) (Sciaenidae) from off Iran yielded one new and one previously known nematode species: Dichelyne (Dichelyne) spinigerus sp. nov. (Cucullanidae) from the host’s intestine in the Persian Gulf and Philometra otolithi Moravec et Manoharan, 2013 (Philometridae) from the ovary in the Persian Gulf and the Sea of Oman. The new species D. spinigerus is mainly characterized by the tail tip of both sexes terminating in two shaply pointed spikes (one dorsal and one ventral) and bearing a pair of minute lateral cuticular spines at its base, situation of both deirids and the excretory pore well posterior to the level of the posterior end of oesophagus, absence of a precloacal sucker and the presence of one or two intestinal caeca. The male and small mature females of the gonad-infecting species P. otolithi are described for the first time, based on light and scanning electron microscopical studies. The male of P. otolithi is most similar to that of P. johnii Moravec et Ali, 2013, but differs from it by the structure of the cephalic end and the number of caudal papillae; both species also differ from each other by the presence of transverse lamellae in the buccal cavity of gravid and subgravid females of P. otolithi, which are missing in those of P. johnii.
10

Two cystidicolids [Nematoda, Cystidicolidae] from marine fishes off New Caledonia

67%
Moravec F., Justine J.-L.
Acta Parasitologica
|
2009
|
tom 54
|
nr 4
341-349
Two nematode species of the family Cystidicolidae were collected from the digestive tract of marine fishes off New Caledonia, South Pacific: Ascarophis adioryx Machida, 1981 from the stomach of the speckled squirrelfish Sargocentron spiniferum and the sabre squirrelfish Neoniphon sammara (new host record) (both Holocentridae, Beryciformes), and a Spinitectus sp. female, morphologically similar to S. beaveri Overstreet, 1970, from the roundjaw bonefish Albula glossodonta (Albulidae, Albuliformes). Based on light and scanning electron microscopy examinations, A. adioryx is redescribed and a new subgenus Dentiascarophis subgen. nov., characterized by the presence of one dorsal and one ventral median protrusions in the mouth, is established to accommodate it; a key to subgenera of Ascarophis is provided. Ascarophis holocentri Parukhin, 1984 is considered a junior synonym of A. adioryx. The cephalic structure of Spinitectus sp. and S. beaveri is very different from those in other congeners and, therefore, a new subgenus Paraspinitectus subgen. nov., characterized by highly reduced pseudolabia, is erected to accommodate these species. The hemiurid digenean Lecithochirium cirrhiti (Manter et Pritchard, 1960) Yamaguti,1970 was found in the stomach of three species of squirrelfishes. Findings of A. (D.) adioryx, Spinitectus (P.) sp. and L. cirrhiti in New Caledonian waters represent new geographical records of these parasites.
11

The mean, distribution and repeatability of faecal egg counts in Polish Wrzosowka ewes following natural gastrointestinal nematode infection during two pasture seasons

67%
Moskwa B., Charon K. M., Cabaj W., Rutkowski R.
Acta Parasitologica
|
1998
|
tom 43
|
nr 2
Faecal egg counts per gram of faeces (EPGs) were measured over a period of two years (1995-1996) in Polish Wrzosówka ewes. Measurements were made at monthly intervals. The first examination in each years was conducted before the start of the grazing season, while the rest of the samples were collected during grazing season. The animals were drenched in May 1996 but not in 1995. EPG were estimated by modified McMaster method and were transformed by log (EPG+1) prior to analyses. Infective larvae of nematode species were identified according to the method described in Anonymous (1986). Meteorological data were collected to evaluate the influence of rainfall and temperature on the faecal egg counts. The MINITAB programme was used to calculate the correlation coefficient between EPGs in different sampling. There was substantial variation among individuals in their EPG. Several nematode species were present; however two nematode genera were dominant: Haemonchus contortus and Trichostrongylus sp. The mean count and the composition of the nematode population was influenced by the weather conditions. H. contortus was the main egg producer during the period of high mean counts when the temperature and rainfall were highest. The correlations between EPG on successive sampling were positive and nearly always significant.
12

Anguillicola crassus - an alien nematode species from the swim bladders of eel [Anguilla anguilla] in the Polish zone of the Southern Baltic and in the waters of Northern Poland

67%
Rolbiecki L., Rokicki J.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr Suppl.1
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.