Review of "Keys to the Nematode Parasites of Vertebrates. Supplementary Volume" by Lynda M. Gibbons

Book review of "Keys to the Nematode Parasites of Vertebrates. Supplementary Volume" by Lynda M. Gibbon

New morphological data on the first-stage larvae of two Procamallanus species (Nematoda: Camallanidae) based on SEM studies

First-stage larvae of camallanid nematodes Procamallanus (Procamallanus) laeviconchus (Wedl, 1862) and Procamallanus (Procamallanus) sp. from naturally infected Distichodus niloticus (Hasselquist) and Clarias gariepinus (Burchell), respectively, from Lake Turkana, Kenya (new geographical records) are described, being for the first time studied by scanning electron microscopyV článku jsou popsána první stádia larev of kamlanidních hlístic Procamallanus (Procamallanus) laeviconchus (Wedl, 1862) a Procamallanus (Procamallanus) sp. z přirozeně infokovaných ryb Distichodus niloticus (Hasselquist) a Clarias gariepinus (Burchell), z jezera Turkana v Keni (nová lokalita).First-stage larvae of camallanid nematodes Procamallanus (Procamallanus) laeviconchus (Wedl, 1862) and Procamallanus (Procamallanus) sp. from naturally infected Distichodus niloticus (Hasselquist) and Clarias gariepinus (Burchell), respectively, from Lake Turkana, Kenya (new geographical records) are described, being for the first time studied by scanning electron microscop

Three new species of Cucullanus (Nematoda: Cucullanidae) from marine fishes off New Caledonia, with a key to species of Cucullanus from Anguilliformes

Based on light and scanning electron microscopical studies of nematode specimens from the digestive tract of some rarely collected anguilliform and perciform fishes off New Caledonia, three new species of Cucullanus Müller, 1777 (Cucullanidae) are described: C. austropacificus n. sp. from the longfin African conger Conger cinereus (Congridae), C. gymnothoracis n. sp. from the lipspot moray Gymnothorax chilospilus (Muraenidae), and C. incognitus n. sp. from the seabream Dentex fourmanoiri (Sparidae). Cucullanus austropacificus n. sp. is characterized by the presence of cervical alae, ventral sucker, alate spicules 1.30–1.65 mm long, conspicuous outgrowths of the anterior and posterior cloacal lips and by elongate-oval eggs measuring 89–108 × 48–57 μm; C. gymnothoracis n. sp. is similar to the foregoing species, but differs from it in the absence of cervical alae and the posterior cloacal outgrowth, in the shape and size of the anterior cloacal outgrowth and somewhat shorter spicules 1.12 mm long; C. incognitus n. sp. (based on female morphology) differs from other congeneric species parasitic in the Sparidae mainly in possessing cervical alae, the postequatorial vulva, phasmids situated at the mid-length of the tail and in the size of the eggs (75–84 × 45–66 μm). A key to species of Cucullanus parasitizing anguilliform fishes is provided

New records of anisakid nematodes from marine fishes off New Caledonia, with descriptions of five new species of Raphidascaris (Ichthyascaris) (Nematoda, Anisakidae)

Recent examinations of anisakid nematodes (Anisakidae) from marine fishes off New Caledonia, collected in the years 2003–2008, revealed the presence of the following five new species of Raphidascaris Railliet et Henry, 1915, all belonging to the subgenus Ichthyascaris Wu, 1949: Raphidascaris (Ichthyascaris) spinicauda n. sp. from the redbelly yellowtail fusilier Caesio cuning (Caesionidae, Perciformes); Raphidascaris (Ichthyascaris) fasciati n. sp. from the blacktip grouper Epinephelus fasciatus (Serranidae, Perciformes); Raphidascaris (Ichthyascaris) nudicauda n. sp. from the brushtooth lizardfish Saurida undosquamis (Synodontidae, Aulopiformes); Raphidascaris (Ichthyascaris) euani n. sp. from the Japanese large-eye bream Gymnocranius euanus (Lethrinidae, Perciformes); and Raphidascaris (Ichthyascaris) elopsis n. sp. from the Hawaiian ladyfish Elops hawaiensis (Elopidae, Elopiformes). An additional two congeneric species, R. (I.) etelidis Moravec et Justine, 2012 and R. (I.) sillagoides (Bruce, 1990) were found in the deep-water red snapper Etelis carbunculus (new host record) and the deepwater longtail red snapper Etelis coruscans (both Lutjanidae, Perciformes), and the silver sillago Sillago sihama (Sillaginidae, Perciformes) (new host and geographical records), respectively. Two unidentified congeneric species, Raphidascaris (Ichthyascaris) sp. 1 from the trumpet emperor Lethrinus miniatus (Lethrinidae, Perciformes) and Raphidascaris (Ichthyascaris) sp. 2 from the white-spotted puffer Arothron hispidus (Tetraodontidae, Tetraodontiformes) were recorded. Moreover, two species of Hysterothylacium Ward et Magath, 1917, H. alatum Moravec et Justine, 2015 and H. epinepheli (Yamaguti, 1941), were found in the leopard coralgrouper Plectropomus leopardus (type host) and the highfin grouper Epinephelus maculatus (new host) (both Serranidae, Perciformes), respectively. This is the second finding of H. epinepheli since its original description in Japan 79 years ago. Most species are described based on light and electron microscopical studies

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

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

Quimperia lanceolata Gendre 1926

Quimperia lanceolata Gendre, 1926 Figs. 19–21 Description. Small nematodes with smooth cuticle. Broad lateral cervical alae present, initiating short distance posterior to base of lips and extending posteriorly to level of small deirids situated somewhat anterior to level of posterior end of oesophagus (Figs. 19A–C, 20C,E,F). Buccal cavity absent. Mouth triangular, with 3 small lips. Oral aperture surrounded by 4 submedian double papillae and 2 small lateral amphids (Figs. 19D, 20A–C). Oesophagus divided into 2 portions; anterior narrow cylindrical muscular portion extends to level of nerve ring, posterior longer muscular-glandular portion somewhat broader towards its posterior end (Fig. 19A,B). Excretory pore at level of nerve ring. Deirids just posterior to posterior ends of cervical alae (Figs. 19A,B, 20F). Tail of both sexes conical, pointed. Male (1 specimen). Length of body 9.8 mm and maximum width 245. Nerve ring, excretory pore and deirids 340, 340 and 911, respectively, from anterior extremity. Lateral alae 653/762 long and 45 wide. Total length of oesophagus 938; anterior portion of oesophagus 288 long and 33 wide; posterior portion 612 long and 96 wide; minimum width of oesophagus 30. Ventral precloacal sucker slightly muscular, 394 from cloacal aperture (Figs. 19E,F, 21A). Preanal papillae: 4 subventral pairs (1 of them anterior to sucker) and 1 unpaired median papilla situated anteriorly to cloaca. Postanal papillae: 6 pairs (4 subventral and 2 lateral). Pair of small lateral phasmids located between lateral pairs of postanal papillae (Figs. 19E,F, 20D,G, 21B). Spicules short, 341 long (Fig. 19E). Gubernaculum moderately sclerotised, 36 long. Caudal end ventrally curved, ending in point. Length of tail 231. Female (1 gravid specimen). Body length 15.6 mm, width 258. Nerve ring, excretory pore and deirids 367, 367 and 966, respectively, from anterior extremity. Cervical alae 789 long and 30 wide. Total length of oesophagus 1.0 mm; its anterior portion 340 long, 36 wide; posterior portion 625 long, 99 wide. Vulva not elevated, postequatorial, 10.2 mm from anterior extremity (at 65% of body length). Vagina short, directed anteriorly from vulva. Uterus opposed. Eggs irregularly oval, thin-walled, non-embryonated, size 69–75 × 54–60 (Fig. 19G). Tail conical with pointed end, 231 long (Fig. 19H). Host: Tailspot ctenopoma Ctenopoma cf. kingsleyae Günther (Anabantidae, Perciformes). Site of infection: Intestine. Locality: Forest stream adjacent to Sangha Lodge, 02°59'06''N; 16°13'59''E (Congo basin), DSPA, Central African Republic (collected 14 September 2012). Prevalence and intensity: 1 fish infected/3 fish examined; 2 nematodes. Deposition of voucher specimen: IPCAS N-1139 (mounted on SEM stub). Remarks. This species was originally described by Gendre (1926) from an undetermined fish („poisson acanthoptérygien“) in Guinea. Later, based on specimens from Ctenopoma kingsleyae Günther in Senegal, Vassiliadẻs (1971, 1972, 1976) redescribed Q. lanceolata and carried out some experiments to elucidate the life cycle of this nematode. The morphology of present specimens is more or less in agreement with this redescription (although some measurements are somewhat greater), the host species is probably identical with that reported by Vassiliadẻs (1971), so there is no doubt that they belong to Q. lanceolata. The SEM examination, for the first time used in this species, made it possible to study some morphological features in more detail. The gubernaculum, the median precloacal papilla and phasmids in the male are reported here for the first time; contrary, neither conical projections on lips nor male caudal alae mentioned by Vassiliadẻs (1971) were observed. The present finding of Q. lanceolata in the Central African Republic represents a new geographical record of this species.Published as part of Moravec, František & Jirků, Miloslav, 2017, Some nematodes from freshwater fishes in central Africa, pp. 1-39 in Folia Parasitologica (033) (033) 64 on pages 21-23, DOI: 10.14411/fp.2017.033, http://zenodo.org/record/814349