Results 101 to 110 of about 315 (132)
Some of the next articles are maybe not open access.

Gene rearrangements in the mitochondrial genome of ten ascaris species and phylogenetic implications for Ascaridoidea and Heterakoidea families

International Journal of Biological Macromolecules, 2022
The Ascaridoidea family and Heterakoidea family are the most common and typical representative of large parasites. Although our understanding of these parasites' diversity has expanded by analyses of some mitochondrial genes, there is limited information on these species' evolutionary rates.
Minhui Shi
exaly   +3 more sources

Ribosomal DNA and Phylogeny of the Ascaridoidea (Nemata: Secernentea): Implications for Morphological Evolution and Classification

Molecular Phylogenetics and Evolution, 1998
Nematodes of the superfamily Ascaridoidea are parasites of the alimentary tract of vertebrates and include species that are of medical and economic importance. Existing evolutionary hypotheses for these organisms have frequently been based on interpretation of one or few "key" structural or life history features.
S A Nadler
exaly   +3 more sources

Two new members in the Contracaecum osculatum complex (nematoda, ascaridoidea) from the antarctic [PDF]

open access: yesInternational Journal for Parasitology, 1994
The genetic structure of adults and larvae of Contracaecum osculatum (sensu lato) from the Antarctic is analyzed on the basis of 24 enzyme loci. Significant deviations of genotype frequencies from the Hardy-Weinberg equilibrium were found, even in samples recovered from the same host.
P. Orecchia   +8 more
core   +6 more sources

Superfamily Ascaridoidea Railliet and Henry, 1915

1991
Academician K I Skryabin   +2 more
exaly   +2 more sources

A new species of Hysterothylacium (Ascaridoidea, Anisakidae) parasitic in Zenopsis conchifer (Zeiformes, Zeidae) from Argentinean waters [PDF]

open access: yesActa Parasitologica, 2011
A new species of parasitic nematode, Hysterothylacium spirale sp. nov. (Ascaridoidea, Anisakidae), is described based on specimens collected from the intestine and pyloric caeca of the silvery john dory Zenopsis conchifer (Lowe) (Zeiformes, Zeidae), from
Juan Timi   +7 more
exaly   +4 more sources

The Morphology of Thynnascaris adunca (Rudolphi) (Nematoda, Ascaridoidea)

Zoologica Scripta, 1981
The following body parts of the fish nematode Thynnascaris adunca were studied by using SEM and TEM: anterior and posterior ends, digestive tract, particularly the oesophagus and its glandular tissue, male and female reproductive organs, excretory and nervous systems, and body wall. The ova in the uterus of a female studied by SEM were found to contain
OIVIND SOLEIM, BJORN BERLAND
openaire   +1 more source

Dujardinascaris spp. (Nematoda: Ascaridoidea) in Old World crocodilians

Systematic Parasitology, 1998
Five new species of the genus Dujardinascaris Baylis, 1947 are described from Old World crocodilians: D. petterae n. sp. in Osteolaemus tetraspis from the Congo, Central Africa; D. blairi n. sp in Crocodylus johnstoni from Northern Australia; D. harrisae n. sp., D. angusae n. sp., and D. westonae n. sp. in C. porosus from Papua New Guinea.
J.F.A. Sprent, E.A. McKeown, M. Cremin
openaire   +1 more source

Electrophoretic detection of population variation withinContracaecum ogmorhini (Nematoda: Ascaridoidea: Anisakidae)

ELECTROPHORESIS, 2001
This study examined genetic variation among specimens of Contracaecum ogmorhini from different otariid hosts and geographical origins using a polymerase chain reaction (PCR)-based mutation detection approach. The first (ITS-1) and second (ITS-2) internal transcribed spacers (ITS) of ribosomal DNA (rDNA) were amplified individually by PCR, scanned for ...
ZHU X. Q.   +4 more
openaire   +3 more sources

Centrids, a Pair of Asymmetrically Arranged Sense Organs in Ascaris suum (Nematoda, Ascaridoidea)

The Journal of Parasitology, 1999
Two prominent, asymmetrically placed cuticular somatic sensilla, called centrids, are reported in Ascaris suum Goeze, 1782, the pig roundworm. The right centrid is situated much more anteriorly on the body than is the left one. The centrids are globular in the fourth-stage larva and obviously void of an apical pore, suggesting at least a tactile ...
Fagerholm, H.-P.   +5 more
openaire   +2 more sources

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