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33842. Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA
- Creator:
- Moravec, František, Buron, Isaure de, and Roumillat, William A.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic nematode, Philometra, new species, estuarine fish, Cynoscion, South Carolina, USA, and West Atlantic Ocean
- Language:
- English
- Description:
- Two new nematode species of Philometra Costa, 1845, P. carolinensis sp. n. and P. cynoscionis sp. n., are described from the spotted seatrout, Cynoscion nebulosus (Cuvier) (Sciaenidae, Perciformes) in estuaries on the Atlantic coast of South Carolina, USA. Philometra carolinensis (males and gravid and subgravid females) parasitic in the host's ovary is most similar to P. lateolabracis (Yamaguti, 1935) in female morphology, but distinctly differs from it in possessing conspicuously short spicules (81-87 µm long) with heavily sclerotized distal parts, the gubernaculum bearing a reflected dorsal barb, and in the length ratio of the gubernaculum and spicules (1:1.23-1.42) in the male. Philometra cynoscionis (only gravid females) found subcutaneously in the host's tissue (lateral to the ascending process of the premaxilla and also posteromedial to the length of each maxilla) is characterized mainly by the presence of cephalic papillae arranged in two circles (8 large papillae in outer circle and 6 small papillae in inner circle), the absence of caudal projections, the body size (length of gravid female 20-33 mm) and the location in the host.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33843. Two new species of philometrid nematodes (Nematoda: Philometridae) from the southern flounder Paralichthys lethostigma in the estuaries of South Carolina, USA
- Creator:
- Moravec, František and Buron, Isaure de
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic nematode, Philometra, Philometroides, Margolisianum, estuarine fish, Paralichthys, South Carolina, and USA
- Language:
- English
- Description:
- Two new philometrid nematodes, Philometra overstreeti sp. n. and Philometroides paralichthydis sp. n., are described from female specimens collected from the southern flounder Paralichthys lethostigma Jordan et Gilbert (Paralichthyidae, Pleuronectiformes) in estuaries of South Carolina, USA. P. overstreeti is characterized by the presence of eight large, equal in size cephalic papillae, the absence of caudal projections, the body length of gravid females (14.10-27.06 mm) and the location in the host (among teeth). P. paralichthydis from the host's fins and the buccal cavity differs from its congeners mainly in possessing longitudinal cuticular ornamentations in addition to transverse ones or individual rounded bosses. It is the first species of Philometroides reported from flatfishes (Pleuronectiformes). A re-examination of type specimens of Margolisianum bulbosum Blaylock et Overstreet, 1999 showed that, in fact, nematodes belonging to two different species (now described to be new to science) and genera were confused in the original description of this taxon and in the diagnosis of Margolisianum. Since the male holotype of M. bulbosum cannot be identified to genus, Margolisianum bulbosum is a species inquirenda and a species incertae sedis. Consequently, Margolisianum becomes a genus inquirendus.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33844. Two new species of Protogyrodactylus (Monogenoidea: Dactylogyridae) from the gills of Gerres nigri (Teleostei: Gerreidae) from Senegal
- Creator:
- Boeger, Walter A., Diamanka, Arfang, Pariselle, Antoine, and Patella, Luciana
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Protogyrodactylus, Gerres nigri, Senegal, Protogyrodactylus ethiopicus, and Protogyrodactylus kritskyi
- Language:
- English
- Description:
- Protogyrodactylus ethiopicus sp. n. and P. kritskyi sp. n. are described from the gills of Gerres nigri Günther (Gerreidae, Perciformes) captured from the estuary of the Sine-Saloum River (Senegal, West Africa). These new species differ from previously described species within the genus by a mid- or dextro-ventral vaginal opening (dextral in all other species). They are part of a morphological species group within Protogyrodactylus Johnston et Tiegs, 1922 that has the tip of the superficial root of the ventral anchor resembling a hook and two anterior projections on the anterior margin of the ventral bar. Protogyrodactylus ethiopicus differs from the remaining species in this group mainly by the morphology of the base of the male copulatory organ (MCO), which is disk-shaped, and the shape of the anterior projections of the ventral bar (round in the new species and relatively elongate in the other species of the group). The other new species, P. kritskyi, differs from all others in the same morphological group in having a MCO with a greatly expanded base that bears a heel-like subterminal sclerotization.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33845. Two new species of Rhabdochona (Nematoda: Rhabdochonidae) from freshwater fishes in Thailand
- Creator:
- Moravec, František and Yooyen, Thanapon
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic nematode, Rhabdochona, freshwater fish, Mystacoleucus, Pseudomystus, and Thailand
- Language:
- English
- Description:
- Two new species of rhabdochonid nematodes are described from the intestine of freshwater fishes in Chiang Mai Province, northern Thailand: Rhabdochona (Rhabdochona) pseudomysti sp. n. from the catfish Pseudomystus siamensis (Regan) (Bagridae, Siluriformes) in the Fang Brook, a tributary of the Kok River (the Mekong River basin), Fang District and Rhabdochona (Globochona) thaiensis sp. n. from the cyprinid Mystacoleucus marginatus (Valenciennes) (Cyprinidae, Cypriniformes) in the Ping River (the Chao Phraya River basin), Muang District. Rhabdochona pseudomysti is mainly characterized by simple, leaf-like oval deirids (a unique feature among Rhabdochona spp.), a prostom with 14 anterior teeth, the presence of basal prostomal teeth, the length ratio of the muscular and glandular portions of oesophagus (1:2.1-2.6), an unusually long left spicule (1.10-1.22 mm), length ratio of spicules (1:11.5-14.7), arrangement of genital papillae, and conspicuously elevated vulval lips. Rhabdochona thaiensis differs from other representatives of the subgenus Globochona Moravec, 1972 possessing caudal projections on the tail tip in that it has only 2 claw-shaped projections located ventrally on the tail tip of both males and females; the species is mainly characterized by the presence of distinct pseudolabia, 8 anterior prostomal teeth, absence of basal teeth, bifurcated deirids, length ratio of the muscular and glandular portions of oesophagus (1:11.3-11.9), conspicuously short (135-141 µm) left spicule, arrangement of genital papillae, and somewhat elevated vulval lips. Fully developed eggs of R. pseudomysti and R. thaiensis remain unknown. These are the first nominal species of Rhabdochona reported from Thailand.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33846. Two new species of Rhodeus (Teleostei: Cyprinidae: Acheilognathinae) from the River Yangtze, China
- Creator:
- Li, Fan , Liao, Te-Yu , and Arai, Ryoichi
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- taxonomy, bitterling, lateral line, breeding season, and egg size
- Language:
- English
- Description:
- Rhodeus cyanorostris sp. nov. and R. nigrodorsalis sp. nov. are described from two tributaries of the River Yangtze, in Sichuan and Jiangxi Provinces, China, respectively. Both species have a small number of branched dorsal-fin rays (both with a mode of 8) and anal-fin rays (mode of 7-8 and 8, respectively), which makes them easily distinguished from all congeners. Rhodeus cyanorostris sp. nov. differs from R. nigrodorsalis sp. nov. in having more predorsal scales (14-16 vs. 12-13), fewer pectoral-fin rays (10-11 vs. 12), a shorter major axis of the eggs (2.5-2.8 mm vs. mostly 3.3-3.5 mm), absence of two rows of light spots on the dorsal-fin rays (vs. presence), and absence of a black blotch on the dorsal fin in adult males (vs. presence). The breeding season in winter of the two new species is unique among the Acheilognathinae.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33847. Two new species of Tanichthys (Teleostei: Cypriniformes) from China
- Creator:
- Li, Fan, Liao, Te-Yu, Bohlen, Jörg, Shen, Zhi-Xin, Zhao, Liang-Jie, and Li, Shan
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- Cyprinidae, Tanichthyidae, white cloud mountain minnow, cytochrome b, phylogeny, and taxonomy
- Language:
- English
- Description:
- Tanichthys albiventris, new species, from the River Jiangping in Dongxing City, Guangxi Province is distinguished from Tanichthys albonubes by the presence of a reddish-orange dorsal-fin margin (vs. white) and 9-10 (9 in mode) branched anal-fin rays (vs. 8 in mode). Tanichthys flavianalis, new species, from the River Jiuqu in Qionghai City, Hainan Province is distinguished from T. albiventris and T. albonubes by the presence of a golden anal-fin margin (vs. white) and 7 (rarely 6) branched dorsal-fin rays (vs. 6 in mode). In T. albiventris, T. albonubes, and T. flavianalis the black lateral stripe is located on the dorsal half of the flank, distinguishing them from Tanichthys kuehnei and Tanichthys micagemmae, in which it is mid-lateral. Tanichthys thabacensis is different from all other species of Tanichthys in the shape of the mouth and insertion of the anal fin; it is tentatively referred to as Aphyocypris.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33848. Two new species of the family Syringophilidae (Acari: Cheyletoidea) from passeriform birds collected in the Altai
- Creator:
- Bochkov, Andre and Apanaskevich, Dmitry
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Acari, Syringophilidae, Passeriformes, parasites, new species, and Altai
- Language:
- English
- Description:
- Two new species of the syringophilid mites (Acari: Syringophilidae) are described from quills of passeriform birds. Syringophilopsis faini sp. n. is described from Sylvia curruca (L.) (Sylviidae) and Syringophiloidus carpodaci sp. n. is described from Carpodacus erythrinus (Pall.) (Fringillidae). Characters are detailed that differentiate Syringophilopsis faini from three species of a new "turdus" group, and Syringophiloidus carpodaci from S. minor.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33849. Two new species of the genus Goezia, G. brasiliensis sp. n. and G. brevicaeca sp. n. (Nematoda: Anisakidae), from freshwater fishes in Brazil
- Creator:
- Moravec, F., Kohn, A., and Fernandes, B.M.M.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Goezia brasiliensis sp. n, G. brevicaeca sp. n., Nematoda, freshwater fishes, Brycon hilarii, Pseudoplatystoma coruscans, and Brazil
- Language:
- English
- Description:
- Examination of freshwater fishes from the Parana River in southern Brazil during March 1992, revealed the presence of two new, previously undescribed species of the genus Goezia: G. brasiliensis sp. n. is described from the stomach of Brycon hilarii (family Characidae) (type host) and the intestine of Pseudoplatystoma coruscans (Pimelodidae) and it is characterized mainly by the length (0.802 mm) of spicules, number and arrangement of male caudal papillae (10 pairs of preanals and 4 pairs of postanals) and body measurements (male 11 mm, female 10-16 mm); the main characteristics of G. brevicaeca sp. n„ described from the stomach of Brycon hilarii, are a short anterior intestinal caecum reaching anteriorly only to the posterior end of oesophagus, comparatively short spicules (0.367 mm), number of male caudal papillae (20 pairs of preanals and 4 pairs of postanals) and an elongate, rather long body (male 17 mm, female 23 mm).
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
33850. Two species of philometrid nematodes (Philometridae) from marine fishes off Japan, including Philometroides branchiostegi sp. n. from Branchiostegus japonicus (Malacanthidae)
- Creator:
- Moravec, František, Nagasawa, Kazuya, and Nohara, Kenji
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic nematode, Philometra, Philometroides, marine fish, Branchiostegus, Acanthogobius, Pterogobius, Sea of Japan, and Japan
- Language:
- English
- Description:
- Gravid females of two species of philometrid nematodes (Philometridae) were collected from marine perciform fishes in Japanese waters, mainly from the southern Sea of Japan. Based on light microscopy and scanning electron microscopy examinations, the previously described but poorly known species Philometra cryptocentri Yamaguti, 1961 is redescribed from specimens recovered from the abdominal cavity of Acanthogobius flavimanus (Temminck et Schlegel), Pterogobius elapoides (Günther) and P. zonoleucus Jordan et Snyder (all Gobiidae) (all new host records); the number (14) and arrangement of cephalic papillae in this species are described for the first time. The new species, Philometroides branchiostegi sp. n. from head tissues of Branchiostegus japonicus (Houttuyn) (Malacanthidae), based on a single specimen, is mainly characterized by the embossment of the entire body except for the cephalic end, presence of four submedian pairs of large cephalic papillae of external circle and two small lateral single papillae of internal circle, pair of large papilla-like caudal projections, the oesophagus with a distinct anterior inflation, by a markedly small body (length about 18 mm) and the larvae 306-465 µm long.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public