Abstract：
:The trichostrongylid nematode Travassostrongylus scheibelorum sp. n. from the Linnaeus' mouse opossum, Marmosa murina (Linnaeus) (type host), and the woolly mouse opossum, Marmosa demerarae (Thomas), from French Guiana is described. The nematodes have a synlophe with ridges frontally oriented from right to left, six dorsal and six ventral, at midbody; seven dorsal and seven ventral posterior to the vulva, and two cuticular thickenings within the lateral spaces; a long dorsal ray and a pointed cuticular flap covering the vulva. This is the 12th species of Travassostrongylus Orloff, 1933, which includes species featuring ridges around the synlophe and a didelphic condition. These traits contrast with those in other genera in the Viannaiidae Neveu-Lemaire, 1934, which feature ventral ridges on the synlophe of adults and a monodelphic condition. Members of the family are chiefly Neotropical and are diagnosed based on the presence of a bursa of the type 2-2-1, 2-1-2 or irregular, and cuticle without ridges on the dorsal side (at least during one stage of their development). Herein, we present a reconstruction of the ancestral states of the didelphic/monodelphic condition and the cuticular ridges that form the synlophe in opossum-dwelling trichostrongyles, namely Travassostrongylus and Viannaia Travassos, 1914. Our investigations suggest they are not reciprocal sister taxa and that the change from didelphy to monodelphy and the loss of dorsal ridges, occurred in the common ancestor of species of Viannaia. These results suggest a synlophe with three ventral ridges is not plesiomorphic in the opossum dwelling trichostrongylids.
journal_name
Folia Parasitol (Praha)journal_title
Folia parasitologicaauthors
Scheibel RP,Catzeflis F,Jiméñez FAdoi
10.14411/fp.2014.032subject
Has Abstractpub_date
2014-06-01 00:00:00pages
242-54issue
3eissn
0015-5683issn
1803-6465journal_volume
61pub_type
杂志文章abstract：:Parasitological examination of faeces of 26 snakes kept in Bio-Ken Snake Farm, Watamu, Kenya revealed new species of Eimeria Schneider, 1875 in Telescopus semiannulatus Smith, 1849. Oocysts of Eimeria arabukosokokensis sp. n. are cylindrical 26.8 (25-29) x 15.1 (14-16) microm with smooth, bilayered oocyst wall and a s...
journal_title：Folia parasitologica
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abstract：:The structure of vulva of four Trichocephalus species has been studied using scanning electron microscopy (SEM). The shape of vulva and cuticular elements on vulval appendages is described and documented. The cuticular structures on the vulva have a characteristic shape specific for each species. It is suppossed that ...
journal_title：Folia parasitologica
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doi：10.14411/fp.2005.003
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journal_title：Folia parasitologica
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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：1984-01-01 00:00:00
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journal_title：Folia parasitologica
pub_type： 杂志文章
doi：
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journal_title：Folia parasitologica
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更新日期：1991-01-01 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：2017-03-09 00:00:00
abstract：:A total of 26,478 ixodid ticks (935 pools) were examined by intracerebral inoculation of suckling mice. Six species of ticks were tested: Ixodes ricinus (23,470 individuals), I. trianguliceps (12), Haemaphysalis punctata (831), H. concinna (39), Dermacentor reticulatus (69) and D. marginatus (2,057). The ticks were co...
journal_title：Folia parasitologica
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doi：
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更新日期：2016-04-26 00:00:00
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doi：
更新日期：1987-01-01 00:00:00
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journal_title：Folia parasitologica
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doi：
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更新日期：2014-12-01 00:00:00
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journal_title：Folia parasitologica
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journal_title：Folia parasitologica
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doi：
更新日期：1997-01-01 00:00:00
