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On some selachinematid nematodes (Chromadorida: Selachinematidae) deposited in the collection of the Smithsonian National Museum of Natural Historyстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Tchesunov A.V., Okhlopkov Yu R.
- Журнал: Nematology
- Том: 8
- Номер: 1
- Год издания: 2006
- Издательство: BRILL ACADEMIC PUBLISHERS
- Местоположение издательства: PLANTIJNSTRAAT 2, P O BOX 9000,LEIDEN, NETHERLANDS, 2300 PA
- Первая страница: 21
- Последняя страница: 44
- Аннотация: A review and descriptions of some selected new of poorly known species of the family Selachinematidae deposited as glycerin slides in nematode collection of the Smithsonian National Museum of Natural History, Washington D.C., USA, namely Cheironchus vorax Cobb 1917, Ch. conicauda sp. n., Ch. dactylocauda sp. n., Gammanema uniformis (Cobb 1920) comb. n., Synonchiella hopperi Ott 1972. All species here studied were found along the Atlantic Coast of the USA. Species of the genus Cheironchus are characterised by details of mandibles which may be significant for species discrimination within the genus. Three closely related species Cheironchus vorax, Ch. paravorax Castillo-Fernandez et Decraemer 1993 and Ch. conicauda sp. n. share similar construction plan of mandibles consisting of an arm and two lateral palms with tiny hooks. The mandibles differ from one another in the presence/absence of a denticulated crest and in the number of palm hooks. The fourth species, Ch. dactylocauda sp. n. differs from those three related species by having vestigial mandibles devoid of palm hooks, presence of cheilostomatal sclerotizations and a tail with a posterior cylindrical portion. All three Cheironchus species here studied possess pharyngeal, longitudinal musculature around the anterior widening of the esophagus. This musculature evidently acts to protrude the mandibles forward beyond the oral aperture. An emended diagnosis of the genus Cheironchus is provided. Gammanema uniformis comb. n. is recorded and described for the first time since publication of the original diagnosis by Cobb (1920) under the name Trogolaimus uniformis Cobb 1920. The genus Trogolaimus is assumed here as a junior synonym of Gammanema Cobb 1920. Synonchiella hopperi is redescribed with a brief discussion of its peculiar feature, an unpaired copulatory spicule.
- Добавил в систему: Чесунов Алексей Валерьевич