Ctenascarophis lesteri n. sp. and Prospinitectus exiguus n. sp. (Nematoda: Cystidicolidae) from the Skipjack Tuna, Katsuwonus pelamis

Crites, John L.; Overstreet, Robin M.; Maung, Molly

doi:10.2307/3283721

Cited by 7 publications

(3 citation statements)

References 4 publications

(3 reference statements)

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“…At present, a total of 13 valid species of Spinitectus are known to occur in North American waters, eleven parasitising freshwater fishes and two parasitising marine fishes. While all species from freshwater fishes and one from marine fishes belong to the nominotypical subgenus Spinitectus Fourment, 1884, one species from marine fishes belongs to the subgenus F. Moravec [12].…”

Section: Discussionmentioning

confidence: 99%

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Redescriptions of Spinitectus acipenseri and S. micracanthus (Nematoda, Cystidicolidae), with notes on the taxonomy of Spinitectus-like nematodes parasitising North American fishes

Moravec,

Huffman,

de Buron

et al. 2023

Parasite

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Based on light microscopical and scanning electron microscopical (SEM) examinations, two North American species of Spinitectus Fourment, 1884, S. acipenseri Choudhury & Dick, 1992 and S. micracanthus Christian, 1972 (Nematoda, Cystidicolidae) are redescribed from museum voucher specimens (S. acipenseri) and those newly collected from centrarchid and some other fishes in the Upper San Marcos River in Texas and the Santee River in South Carolina, USA. The first use of SEM to study S. acipenseri, a parasite of lake sturgeon Acipenser fulvescens Rafinesque (Acipenseridae) in Canada, made it possible to describe dorsal and ventral lips, amphids and sublabia, and the presence of a dorsal barb on the right spicule, which was confirmed to be the most characteristic feature of this species. The SEM study of S. micracanthus, a parasite mainly of centrarchids, enabled us to correctly determine the location of the excretory pore in relation to rings of cuticular spines in the male, and to describe the exact structure of the tip of the male tail, sublabia, phasmids and the presence of a median ventral protuberance on the male tail. Some taxonomic problems of North American species of Spinitectus are discussed. Filaria serrata Linton, 1901 is considered a junior synonym of S. oviflagellis Fourment, 1884. To date, there are 13 valid species of Spinitectus parasitising fishes in North America. Keys to species of Spinitectus-like nematodes from fishes in North American waters are provided.

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Section: Discussionmentioning

confidence: 99%

“…Maximum length of spines 3-6(3)(4)(5). Length of vestibule including prostom 75-87 (87-90); prostom 9-15 (9-12) long, 9-12(9)(10)(11)(12) wide. Muscular oesophagus 186-219 (186-243) long, 18-21(18)(19)(20)(21) wide; glandular oesophagus 1.28-1.78 (1.62-2.12) mm long, 36-54 (45-60) wide; length ratio of both parts of oesophagus 1:6.8-9.1 (1:7.9-8.8).…”

mentioning

confidence: 99%

Redescriptions of Spinitectus acipenseri and S. micracanthus (Nematoda, Cystidicolidae), with notes on the taxonomy of Spinitectus-like nematodes parasitising North American fishes

Moravec,

Huffman,

de Buron

et al. 2023

Parasite

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“…A characteristic feature of Metabronema is the presence of lateral alae, which generally do not occur in cystidicolids, except for members of Ctenascarophis Mamaev, 1968 (see Crites et al 1993). The ornamentations of the cuticle of older females seem to be characteristic of Metabronema only.…”

Section: Discussionmentioning

confidence: 99%

Redescription of Metabronema magnum (Nematoda: Cystidicolidae), a swimbladder parasite of the carangid fish Gnathanodon speciosus off New Caledonia

Moravec

Justine

2007

FOLIA PARASIT

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Abstract. The cystidicolid nematode Metabronema magnum (Taylor, 1925) is redescribed from specimens collected from the swimbladder of the fish (golden trevally) Gnathanodon speciosus (Forsskål) (Carangidae, Perciformes) off New Caledonia, South Pacific (a new geographical record). The light and scanning electron microscopical examination made it possible to study in detail the morphology of this so far little-known species. Its pseudolabia were found to possess distinct anterior protrusions (protuberances), sublabia are absent, only four cephalic papillae are present, deirids are bifurcated, and the male possesses six pairs of postanal papillae. By its morphology, M. magnum seems to be most similar to species of Salvelinema Trofimenko, 1962, also from the swimbladder of fishes, differing from them mainly in the presence of median wedge-shaped outgrowths in the mouth, lateral alae, the longer spicule on the right side, and a fewer number of pairs of preanal papillae in the male. Since the morphology of M. magnum considerably differs from that of other representatives of the Cystidicolidae, Metabronema in Rasheed's (1966) conception is considered a valid genus.

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Parasites of skipjack, Katsuwonus pelamis, from Madeira, Eastern Atlantic

et al. 2018

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Ctenascarophis lesteri n. sp. and Prospinitectus exiguus n. sp. (Nematoda: Cystidicolidae) from the Skipjack Tuna, Katsuwonus pelamis

Cited by 7 publications

References 4 publications

Redescriptions of Spinitectus acipenseri and S. micracanthus (Nematoda, Cystidicolidae), with notes on the taxonomy of Spinitectus-like nematodes parasitising North American fishes

Redescriptions of Spinitectus acipenseri and S. micracanthus (Nematoda, Cystidicolidae), with notes on the taxonomy of Spinitectus-like nematodes parasitising North American fishes

Redescription of Metabronema magnum (Nematoda: Cystidicolidae), a swimbladder parasite of the carangid fish Gnathanodon speciosus off New Caledonia

Parasites of skipjack, Katsuwonus pelamis, from Madeira, Eastern Atlantic

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