Abstract：
:Ultrastructural characters of spermiogenesis and mature spermatozoon of Triaenorhina rectangula (Fuhrmann, 1908) are examined by transmission electron microscopy. Spermiogenesis follows the Bâ and Marchand's Type III spermiogenesis of cestodes. The process begins with the formation of a differentiation zone containing two centrioles and a cytoplasmic protrusion. The centrioles are associated with vestigial striated roots. One of the centrioles develops a free flagellum externally to the cytoplasmic protrusion. After a slight rotation, the free flagellum fuses with the cytoplasmic protrusion. In the final stage of spermiogenesis, a single crested body appears in the anterior part of the differentiating spermatozoon. The anterior extremity of the mature spermatozoon is characterised by an apical cone and a single crested body. The axoneme is of the 9+"1" trepaxonematan type. A periaxonemal sheath and electron-dense rods are described in some parts of the mature spermatozoon. The nucleus is electron-dense and spirally coiled around the axoneme. The cortical microtubules are spirally arranged at an angle of about 40 degrees to the spermatozoon axis. The present results show that the ultrastructural characters of spermiogenesis and mature spermatozoon of T. rectangula resemble most closely those in taeniids and metadilepidids. The comparison of these results with the only previous spermiological description of a paruterinid species reveals differences relative to the occurrence of filamentous rods of electron-dense material versus intracytoplasmic walls in the mature spermatozoon that may reflect the polyphyletic character of the Paruterinidae.
journal_name
Folia Parasitol (Praha)journal_title
Folia parasitologicaauthors
Yoneva A,Georgieva K,Nikolov PN,Mizinska Y,Georgiev BB,Stoitsova SRdoi
10.14411/fp.2009.032subject
Has Abstractpub_date
2009-12-01 00:00:00pages
275-83issue
4eissn
0015-5683issn
1803-6465journal_volume
56pub_type
杂志文章abstract：:A new nematode species (Neoascarophis mariae n. sp.) is described based on specimens collected from the Argentine goatfish Mullus argentinae (Hubbs et Marini) from coastal waters off the state of Rio de Janeiro, Brazil. In the genus, the new species belongs to the group of species with females that have the vulva near...
journal_title：Folia parasitologica
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Cestodes of the family Anoplocephalidae Cholodkovsky, 1902, in their adult form, parasitize a variety of hosts, including reptiles, birds and mammals. To complete their life cycle, an intermediate host is required. This study gives a critical review of the life cycles of genera principally important to veterinary medi...
journal_title：Folia parasitologica
pub_type： 杂志文章,评审
doi：
更新日期：1998-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
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更新日期：1976-01-01 00:00:00
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journal_title：Folia parasitologica
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doi：
更新日期：1991-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:Specimens of the nematode genus Rhabdochona Railliet, 1916 (Rhabdochonidae) were collected during helminthological examination of four species of cyprinid fishes in two rivers of the Amur River basin in the Russian Far East (Primorsky Region) in June 2011. Detailed light microscopical (LM) and scanning electron micros...
journal_title：Folia parasitologica
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doi：10.14411/fp.2012.027
更新日期：2012-09-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
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pub_type： 杂志文章
doi：10.14411/fp.2000.015
更新日期：2000-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1977-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章,评审
doi：10.14411/fp.2005.003
更新日期：2005-05-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：2004-12-01 00:00:00
abstract：:Microsporidia constitute a large group of obligate intracellular protozoan parasites that inject themselves into host cells via the extrusion apparatus of the infective spore stage. Although the injection process is poorly understood, its energy source is thought to reside in the posterior vacuole that swells signific...
journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2005.014
更新日期：2005-05-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：2005-11-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2001.045
更新日期：2001-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2013.026
更新日期：2013-07-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2013.041
更新日期：2013-11-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2020.001
更新日期：2020-01-10 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2003.018
更新日期：2003-06-01 00:00:00
abstract：:Cucolepis gen. n. is erected as monotypic for Cucolepis cincta sp. n., a new species of cyclophyllidean cestode of the family Paruterinidae. The new species is described from the squirrel cuckoo, Piaya cayana Lesson (Aves: Cuculiformes), taken from two localities in Paraguay in 1984 and 1985. This new genus is most si...
journal_title：Folia parasitologica
pub_type： 杂志文章
doi：10.14411/fp.2012.040
更新日期：2012-12-01 00:00:00
abstract：:Soricinia tripartita Zarnowski, 1955 is redescribed on the basis of specimens from the type host Sorex araneus Linnaeus from Lithuania, Latvia and Russia (Republic of Karelia and Republic of Komi - a new geographical record) as well as from Sorex satunini Ognev and Sorex volnuchini Ognev from Russia (Nalchik Area in t...
journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
更新日期：2014-04-01 00:00:00
