Studies on some spirurids (Nematoda: Spirurida) from fishes of the Okavango River, Botswana

Moravec, František; As, Liesl L. Van

doi:10.1007/s11230-015-9565-0

Cited by 14 publications

(36 citation statements)

References 27 publications

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“…Paracamallanus cyathopharynx was recently redescribed in detail by Moravec and Van As (2015b). Since the morphology of present specimens is in agreement with this redescription, we refrain from describing these nematodes again.…”

Section: Camallanoidea Railliet Et Henry 1915supporting

confidence: 53%

Some nematodes from freshwater fishes in central Africa

Moravec

Jirků

2017

FOLIA PARASIT

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Twenty species (sixteen adult and four larval) of parasitic nematodes belonging to the Ascaridoidea, Camallanoidea, Cosmocercoidea, Dioctophymatoidea, Habronematoidea, Oxyuroidea, Seuratoidea, and Thelazioidea were collected from freshwater fishes of the Congo River basin in the Democratic Republic of the Congo and the Central African Republic in 2008 and 2012, respectively. Based on light and scanning electron microscopical examination, many species are redescribed in detail. This material also contained four previously unknown species, Labeonema longispiculatum sp. n. from Synodontis acanthomias Boulenger, Gendria longispiculata sp. n. from Schilbe grenfelli (Boulenger), G. sanghaensis sp. n. from Schilbe marmoratus Boulenger, and Cucullanus congolensis sp. n. from Auchenoglanis occidentalis (Valenciennes). The new species L. longispiculatum is mainly characterised by conspicuously long (210-228 µm) spicules, approximately twice as long as those in other congeners, the length (45-48 µm) of the gubernaculum and the host family (Mochokidae), whereas G. longispiculata by very long (1.2 mm) spicules, the shape of the oesophagus and cephalic vesicle, distribution of postanal papillae and the host family (Schilbeidae). Main characteristic features of G. sanghaensis are the presence of a hexagonal oral aperture surrounded by lip-like structures, the posterior portion of the oesophagus moderately expanded, spicules and the gubernaculum 414-438 µm and 54-57 µm long, respectively, deirids located at the level of the posterior end of the oesophagus and the absence of cervical alae. Cucullanus congolensis differs from congeneric species parasitising African freshwater and brackish-water fishes mainly in the absence of a ventral precloacal sucker and lateral preanal papillae, the presence of a large median precloacal papilla-like formation, spicules 480-489 µm long and the location of the excretory pore in the region of the oesophago-intestinal junction. Chabaudus Inglis et Ogden, 1965 is considered a junior synonym of Gendria Baylis, 1930 and, consequently, species listed in the former genus are transferred to the latter as G. alaini (Alfonso-Roque, 1981) comb. n., G. chabaudi (Inglis et Ogden, 1965) comb. n., G. dehradunensis (Rizvi, Bursey et Maity, 2016) comb. n., G. thysi (Puylaert, 1970) comb. n. and G. williamsi (Puylaert, 1970 comb. n. The findings represent many new host and geographical records.Keywords: helminth parasites, taxonomy, new taxa, Osteichthyes, Congo River basinThe present knowledge of nematodes parasitising freshwater fishes in Africa is still very incomplete (Moravec and Scholz 2017). Particularly regarding the parasite fauna in the Congo River basin, from where some papers describing mostly a single nematode species have been published (e.g. Taylor 1925, Baylis 1928, Rodhain and Vuylsteke 1934, Schuurmans Stekhoven 1937, Puylaert 1970a, but the number of studies currently is incipient. The most important study at the referred region was the comprehensive survey of Campana-Rouget (1961) o...

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Section: Camallanoidea Railliet Et Henry 1915supporting

confidence: 53%

Some nematodes from freshwater fishes in central Africa

Moravec

Jirků

2017

FOLIA PARASIT

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“…Only a single gravid female of Paracamallanus cyathopharynx was obtained from each of the above-mentioned hosts in the two localities. Their morphology was in full agreement with the redescription of this nematode species by Moravec and Van As (2015b). (Wedl, 1861) Syn.…”

Section: E P O S I T I O N O F V O U C H E R S P E C I M E N S : Ipsupporting

confidence: 80%

“…Remarks. The general morphology of the only available female specimen agrees well with the redescription of S. polli provided by Moravec and Van As (2015b); moreover, its host (S. schall) is the type host of this nematode species.…”

Section: Habronematoidea Chitwood Et Wehr 1932supporting

confidence: 74%

“…Body length 5.6 mm, maximum width 163. Cuticular spines as described by Moravec and Van As (2015b). Vestibule including prostom 87 long.…”

Section: Habronematoidea Chitwood Et Wehr 1932mentioning

confidence: 99%

“…Spinitectus polli was originally described by Campana-Rouget (1961) from S. schall in Lake Albert, the Democratic Republic of the Congo; she also listed S. polli from Alestes dentex (Linnaeus) and Brycinus macrolepidotus Valenciennes (both Alestidae, Characiformes) in the same locality, but these findings need to be revised, because these hosts are representatives of a different fish order (Moravec and Van As 2015b). This nematode species (reported as S. zambezensis) was also recorded from Synodontis zambezensis Peters in South Africa (Boomker 1993, Boomker and Puylaert 1994 and from S. nigromaculatus Boulenger in Botswana Van As 2004, 2015b Remarks.…”

Section: Habronematoidea Chitwood Et Wehr 1932mentioning

confidence: 99%

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Some nematodes, including two new species, from freshwater fishes in the Sudan and Ethiopia

Moravec

Scholz

2017

FOLIA PARASIT

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Fourteen species (twelve adult and two larval) of nematodes belonging to the Ascaridoidea, Camallanoidea, Cosmocercoidea, Habronematoidea, Oxyuroidea, Seuratoidea and Trichinelloidea were collected from fishes in the Sudan (River Nile and Atbara Dam Lake), whereas only four species (one adult and three larval) of the Ascaridoidea, Camallanoidea, Dioctophymatoidea and Trichinelloideafrom fishes in Ethiopia (Lake Tana). The Sudanese material also contained two previously unknown species, Cucullanus mormyri sp. n. from Mormyrus caschive Linnaeus (type host), Mormyrus sp. and Marcusenius cyprinoides (Linnaeus) (all Mormyridae), and Procamallanus (Spirocamallanus) pseudospiralis sp. n. from Synodontis schall (Bloch et Schneider) (type host), S. frontosus Vaillant and S. nigrita Valenciennes (all Mochokidae), which are described based on light and scanning electron microscopical studies. Cucullanus baylisi Campana-Rouget, 1961, a little-known parasite of Synodontis spp., is redescribed in detail. A key to Procamallanus (Spirocamallanus) spp. from African inland fishes is provided. Falcaustra guiersi Vassiliadès, 1973 is considered a junior synonym of F. hexapapillata (Khalil, 1962). The findings represent several new host and geographical records. Cucullanus baylisi Lakshmi, 2000 (= a homonym to C. baylisi Campana-Rouget, 1961) is re-named as C. dubius nom. n. and is considered a species inquirenda.

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