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Start Over Creator Vávra, Jiří Date Unknown

2. A Trachipleistophora-iike microsporidium of man: its dimorphic nature and relationship to Thelohania apodemi

Creator:
Vávra, Jiří, Yachnis, Anthony T., Canning, Elisabeth U., Curry, Alan, Shadduck, John A., and Orenstein, Jan M.
Format:
print
Type:
model:internalpart and TEXT
Subject:
microsporidia, AIDS, Trachipleistophora, man, Thelohania apodemi, rodents, and electron microscopy
Language:
English
Description:
The structure of the human microsporidium found by Yachnis and colleagues in two AIDS patients (Am. J. Clin. Pathol. 106: 535-43, 1996) (hereafter referred to as HMY) was investigated by light and transmission electron microscopy and compared with Thelohania apodemi Doby, Jeannes et Raoult, 1963, a microsporidian of small rodents. The fine structure of the HMY was found to be similar to that of Trachipleistophora hominis Hollister, Canning, Weidner, Field, Kench et Marriott, 1996. Characteristic is the presence of a thick layer of electron dense material on the outer lace of the meront plasmalemma, which is maintained during the whole life cycle and which later persists as an electron dense coat on the sporophorous vesicle (SPOV). However, HMY is distinguished from T. hominis during sporogony, as two types of SPOV and spores are formed in HMY. One type of SPOV contains thick-wallcd spores (usually 8 or more in number) with anisofilar polar filaments of 7 + 2 pattem, while the other type contains only two thin-walled spores with a smaller number (3-5) of isofilar polar filament coils. The HMY differs from T. apodemi which also forms SPOV with 8 spores inside, but the spores of which are larger in size and have 9 + 2 polar filament pattern.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Češi na jižní Ukrajině

Creator:
Uherek, Zdeněk, Valášková, Naďa, Bažant, Andrej, Vávra, Jiří, Klípa, Ondřej, and Křížová, Markéta
Format:
print
Type:
model:internalpart and TEXT
Language:
Czech
Description:
Authors of the article are members of the Ethnological Institute of the Czech Academy of Sciences and students of the department of Ethnology of the Philosophical Faculty, Charles University in Prague. It is based on the knowledge obtained in the course of the field research of multiethnic villages and towns with Czech minorities, realized in the year 1999 in Southern Ukraine. The research was focused mainly on the town Odessa and villages Bohemka, Veselinovka, Novhorodkivka, Alexandrovka and Lobanovo. Also Melitopol, Zoporoží and other localities are mentioned. In the text, attention is given especially to the development of the ethnic composition of the inhabitants, their family life and family connections, sociál life and religious activities, language communication and, partially, also to their folklóre and materiál culture. The researches arrived at a conclusion that in the times of „perestroika “ there was a rapid iníensification of the interest in the origins of individual families, as well as a growing emphasis on the ethnical consciousness of the inhabitants, At the same time, manifestations of ethnic, minority and national life in towns and in villages differ profoundly. The authors try to reveal reasons of this foct especially among the members of the Czech minority and to show what exactly do they perceive being base of their Czech identity.
Rights:
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5. Microsporidia in aquatic microcrustacea: the copepod microsporidium Marssoniella elegans Lemmermann, 1900 revisited

Creator:
Vávra, Jiří, Hyliš, Miroslav, Oborník, Miroslav, and Vossbrinck, Charles R.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Microsporidia, Marssoniella, Cyclops vicinus, phylogeny, ultrastructure, and Trichoptera
Language:
English
Description:
Marssoniella elegans Lemmermann, 1900, a parasite of ovarial tissues of the copepod Cyclops vicinus Uljanin, 1875, was studied as a representative of aquatic-clade microsporidia which form ''heteroinfectious spores'' (spores not infective to the original host as opposed to ''homoinfectious spores'' which are infective for the original host) and which thus should require an alternate host. Several structural characters of this microsporidian are similar to those of copepod morphs of microsporidia infecting mosquitoes. However, small subunit ribosomal DNA phylogeny indicates that caddis flies (Insecta, Trichoptera) might be the alternate hosts of Marssoniella. Ultrastructural data obtained are used to redefine the genus Marssoniella Lemmermann, 1900 and its type species Marssoniella elegans.
Rights:
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6. Projevy identity v pohřebním ritu obyvatel Bohemky a Veselinovky na Ukrajině

Creator:
Vávra, Jiří
Format:
print
Type:
model:internalpart and TEXT
Subject:
Bohemka, Veselinovka, Ukraine, identity, funeral rites, and postfuneral rites
Language:
Czech
Description:
Bohemka and Veselinovka in Ukraine were founded at the beginning of the twentieth century by descendants of Czech religious emigrants of the eighteenth century. Nowadays, both villages are inhabited predominantly by Protestant Czechs who still constitute a majority, as well as by Ukraininas of Orthodox denomination and, partly, by individuals of other nationalities. In the article the ethnical and confessional identity of inhabitants of both villages is being presented through the analysis of funeral and postfuneral rites and their material manifestatíons. In both communities funerals and funeral feasts are celebrated; besides, rites commemorating the deceased are observed; „pominky", that is, remembrances of the dead that také place in precisely determinated intervals, „provody“ or collective visits of cemeteries accompanied by feasting on the graves, and also remembrances of deceased soldiers at memorials. Most of these rituals stem from Orthodox tradition, but nowadays also Czech inhabitants of the communities participate in them. They struggle to belittle them, because they are not compatible wiťh their tradition as well as with their religious ideology. Dissimilarities, but also coming together of both groups manifested itself on both cemeteries. Coming together had been realized thanks to more intense social bonds among members of both groups. The (post)funeral rites contain in themselves expressions of ethnic and confessional identity through symbols, such as cross and chalice. Such rituals not only make reference to tradition, but they introduce the participants into the system of reciprocal relations and corroborate the existing social bonds.
Rights:
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7. Vavraia culicis (Weiser, 1947) Weiser, 1977 revisited: cytological characterisation of a Vavraia culicis-like microsporidium isolated from mosquitoes in Florida and the establishment of Vavraia culicis floridensis subsp. n.

Creator:
Vávra, Jiří and Becnel, James J.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Microsporidia, mosquitoes, Vavraia, ultrastructure, and light microscopic cytology
Language:
English
Description:
A brief nomenclatural history of Vavraia culicis (Weiser, 1947), the type species for the genus Vavraia Weiser, 1977, is presented together with a detailed description of the cytological and ultrastructural characteristics of a Vavraia culicis-like microsporidian species isolated from Aedes albopictus (Scuse) in Florida. This ''Florida isolate'', is the only known isolate of a species of the genus Vavraia from mosquitoes propagated in laboratory culture. Although the Florida isolate has been used under the name Vavraia culicis in several molecular phylogeny and host-parasite studies, it has not been structurally characterized and its relationship to the type species Vavraia culicis has never been examined. Structural data strongly support placement of the Florida isolate within the genus Vavraia and indicate its close relationship to both the type species of the genus and to other Vavraia-like mosquito microsporidia to which the name V. culicis has been applied. However, the identity of the Florida isolate with V. culicis (Weiser, 1947) Weiser, 1977 cannot be presently confirmed. Morphometric examination of spores of several Vavraia-like microsporidia isolates from mosquitoes, including the type material of Vavraia culicis, indicates that Vavraia culicis-like microsporidia probably represent not a single species, but a group of closely related organisms. Subspecies status is proposed for the Florida isolate.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public