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2. Cenotes (sinkholes) of the Yucatan Peninsula, Mexico, as a habitat of adult trematodes of fish
- Creator:
- Scholz, T., Vargaz-Vázguez, J., Moravec, F., Vivas-Rodríguez, C., and Mendoza-Franco, E.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Digenea, fish, cenotes, Yucatan, Mexico, and zoogeography
- Language:
- English
- Description:
- Examination of a total of 581 fish specimens of 15 species from 39 cenotes (sinkholes) in the Yucatan Peninsula, southeastern Mexico, revealed the presence of 10 species of adult trematodes. These were as follows: Saccocoelioides sogandaresi Lumsden, 1963, Saccocoelinides sp. (family Haploporidae), Cichlasotrema ujati Pineda et Andrade, 1989 (Angiodictyidae), Crassicutis cichlasomae Manter, 1936 (Homalometridae), Magnivitellinum simplex Kloss, 1966 (Macroderoididae), Stunkardiel-la minima (Stunkard, 1938) (Acanthostomidae), Oligogonotylus manieri Watson, 1976 (Cryptogonimidae), Genarchella tropica (Manter, 1936), G. astyanactis (Watson, 1976), and G. isabellae (Lamothe-Argumedo, 1977) (Derogenidae). Saccocoelioides sogandaresi is reported from Mexico for the first time. Poecilia velifera and P. latipunctata for S. sogandaresi, Cichlasoma octo-fasciatum for C. cichlasomae, Cichlasoma friedrichslahli and C. meeki for O. manieri, and C. meeki, C. octofasciatum and Go-hiomorus dormitor for C. isabellae represent new host records. Most species found are described and figured and their host range
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. Grillotia epinepheli sp. n. (Cestoda: Trypanorhyncha) plerocerci from the teleost, Epinephelus guaza, in Sardinia, Italy
- Creator:
- Scholz, T., Garippa, G., and Scala, A.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Grillotia, Trypanorhyncha, Epinephelus guaza, and Italy
- Language:
- English
- Description:
- Grillotia epinepheli sp.n. is described on the basis of plerocerci found in the body cavity and peritoneum of the teleost, Epinephelus guaza (L.) (Perciformes: Serranidae) caught off Sardinia, Italy. The species is distinguished from congeners by its tentacular armament, particularly in the basal armature. The metabasal region is armed with rows of 8-9 principal hooks beginning on the internal face; hooks 9 (9’), if present, much smaller than hooks 8 (8’) and similar to minute hooks on the external face. There are three intercalary rows consisting of 3, 2 and 4 hooks each. The external face is armed with a longitudinal band of minute hooks arranged in about 4 files. Basal armature well developed and composed of 7-8 rows of falciform and spiniform hooks.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
4. Metacercariae of trematodes of fishes from cenotes 0= sinkholes) of the Yucatan Peninsula, Mexico
- Creator:
- Scholz, T., Vargas-Vázquez, J,, Moravec, F., Vivas-Rodriguez, C., and Mendoza-Franco, E.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Trematoda, metacercariae, fishes, cenotes, Yucatan, Mexico, and zoogeography
- Language:
- English
- Description:
- The paper presents a survey of the metacercariae of trematodes found in 581 fishes of 15 species from 39 cenotes (sinkholes) of the Yucatan Peninsula, southeastern Mexico. The following 21 species were found: Echinochasmus sp. 1, Echino-chasmus sp. 2, Echinostomatinae gen. sp. (family Echinostomatidae), Stunkardiella minima (Stunkard, 1938), Alrophecaecum (?) astorquii (Watson, 1976), Peiaezia loossi (Pérez Vigueras, 1957) (Acanthostomidae); Ascocotyle (Ascocotyle) tenuicollis Price, 1935, Ascocotyle (Ascolotyle) sp. 1, Ascocotyle (Phagicola) diminuta (Stunkard et Haviland, 1924), Ascocotyle (Phagicola) sp. 2 (= Phagicola angrense Travassos, 1916 of Salgado-Maldonado and Aguirre-Macedo, 1991), Ascocotyle (Phagicola) sp. 3 (Heterophyidae); Cladocystis trifolium (Braun, 1901) (Opisthorchiidae); Oligogonotylus manieri Watson, 1976 (Cryptogonimidae); Clinostomum cf. complanatum (Rudolphi, 1814) (Clinostomidae); Diplostomum (Auslrodiplostomum) com-paclum (Lutz, 1928), Posthodiplostomum minimum (MacCallum, 1921), Posthodiplostomum sp. (Diplostomidae); Neodiplos-tomidae gen. sp. 1 ; Neodiplostomidae gen. sp. 2 (Neodiplostomidae); and Apharyngostrigea sp. (Strigeidae). All species found are described and figured, and their life cycles are briefly discussed.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
5. Nematodes parasitic in fishes of cenotes (= sinkholes) of the Peninsula of Yucatan, Mexico. Part 2. Larvae
- Creator:
- Moravec, F., Vivas-Rodriguez, C., Scholz, T., Vargas-Vázquez, J., Mendoza-Franco, E., Schmitter-Soto, J. J., and González-Solís, D.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- larval nematodes, parasites, fishes, cenotcs, Yucatan, and Mexico
- Language:
- English
- Description:
- This paper comprises a systematic survey of larval nematodes collected from fishes from cenotes (= sinkholes) of the Peninsula of Yucatan, southern Mexico, in 1993-1994. Larvae of the following nine species were recorded: Physocephalus sexa-lalus, Acuariidae gen. sp., Spiroxys sp., Falcausira sp., Hysterothylacium cenotae, Contracaecum sp. Type 1, Contracaecum sp. Type 2, Goezia sp., and Eustrongylides sp. Larvae of P. sexalatus are recorded from fishes (Rhamdia guatemalensis) for the first time. The larvae are briefly described and illustrated and problems concerning their morphology, taxonomy, hosts and geographical distribution are discussed. Adults of these larvae are parasitic in piscivorous fishes, reptiles, birds and mammals (definitive hosts). Fishes harbouring the larvae of these parasites serve as paratenic hosts, being mostly an important source of infection for the definitive hosts.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
6. Nematodes parasitic in fishes of cenotes (= sinkholes) of the Peninsula of Yucatan, Mexico. Part Í. Adults
- Creator:
- Moravec, F., Vivas-Rodríguez, C., Scholz, T., Vargas-Vázquez, J., Mendoza-Franco, E., and González-Solís, D.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- parasitic nematodes, fishes, cenotes, Mexico, and Yucatan
- Language:
- English
- Description:
- The present paper comprises a systematic survey of adult nematodes collected from fishes from cenotes (= sinkholes) of the Peninsula of Yucatan, southeastern Mexico, in 1993-1994. Examinations of a total of 533 fishes (17 species) originating from 39 cenotes from the Mexican states of Yucatan and Quintana Roo revealed the presence of the following nine nematode species: Rhabdochona (Rhabdochona) kidderi, Procamallanus (Spirocamallanus) rebecae, P. (S.) neacaballeroi, Philome-trnides caudata, Hysterothylacium cenotae, Pseudocapillaria yucatanensis, Paracapillaria rhamdiae, P. teixerafreitasi and Capillostrongyloides sp. (only females). Four species (R. kidderi, P. rebecae, P. neacaballeroi and Capillostrongyloides sp.) are briefly described and illustrated and some problems concerning their morphology, taxonomy, hosts and geographical distribution are discussed. Taxonomic changes include Procamallanus (Spirocamallanus) neacaballeroi (Caballero-Deloya, 1977) comb. n. and Procamallanus (Spirocamallanus) rebecae (Andrade-Salas, Pineda-López ct Garcfa-Magana, 1994) comb. n. The nematode fauna of fishes in cenotes of the Yucatan Peninsula shows its appurtenance to the Neotropical fauna with close affinities with that of fish nematodes from South America, but with a considerable degree of endemism.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
7. Observations on the development of Syncuaria squamata (Nematoda: Acuariidae), a parasite of cormorants, in the intermediate and paratenic hosts
- Creator:
- Moravec, F. and Scholz, T.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Nematoda, Syncuaria, development, intermediate host, paratenic host, Ostracoda, and cormorant
- Language:
- English
- Description:
- The development of the nematode Syncuaria squamata (Linstow, 1883), a gizzard parasite of cormorants, was experimentally studied in the ostracod Notodromas monacha. After the eggs of this nematode have been swallowed by the ostracod, the toothed first-stage larvae of the parasite are released and penetrate through the intestinal wall into the haemocoel of the crustacean. Before attaining the infective third stage, the larvae moult twice in the body of the intermediate host (9-11 and 13-15 days after infection at water temperatures of 20-22° C). The fishes Alhumaides hipunctatus, Noemacheilus barbatulus, Oncor-hynchus mykiss and Poecilia reticulata were for the first time recorded as suitable experimental paratenic hosts of S. squamata third-stage larvae in which a slight growth of larvae may occur. The first recorded natural paratenic host of this nematode was tench, Tinca tinea, originating from a South-Bohemian pond where cormorants occur. Paratenic hosts are apparently the main source of S. squamata infection for cormorants.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8. Philometroides caudata sp. n. (Nematoda: Philometridae) from Rhamdia guatemalensis (Pisces) in Yucatan, Mexico
- Creator:
- Moravec, F., Scholz, T., and Vivas-Rodríguez, C.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Philometroides, parasitic nematodes, Rhamdia, fish, Yucatan, and Mexico
- Language:
- English
- Description:
- A new nematode species, Philometroides caudata sp.n., is described from the swimbladder (under the serosa cover) of the freshwater pimelodid catfish, Rhamdia guatemalensis, from cenotes (— sinkholes) in Yucatan, southeastern Mexico. It differs from all hitherto known members of the genus, except P. maplestoni (Travassos, Artigas et Pereira, 1928), in having the functional anus, the conical tail with a terminal knob-like structure and the oesophagus without an anterior inflation in female, and in the structure of the caudal end in male. It can be distinguished from P. maplestoni (described only from females) by the extent of embossed cuticle, the size of body and the host type. P. caudata, representing a Neotropical element, is the first Philometroides species reported from freshwater fishes in Mexico.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
9. Pseudocapillaria yucatanensis sp. n. (Nematoda: Capillariidae) from the bagre Rhamdia guatemalensis (Pisces) from cenotes in Yucatan, Mexico
- Creator:
- Moravec, F., Scholz, T., and Vivas-Rodriguez, C.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Pseudocapillaria yucatanensis, Rhamdia guatemalensis, cenotes, Yucatan, and Mexico
- Language:
- English
- Description:
- A new nematode species, Pseudocapillaria yucatanensis sp. n., is described from the intestine of the freshwater pimelodid catfish Rhamdia guatemalensis (Günther) from cenotes (= sinkholes) in Yucatan, Mexico. It differs from other three related species parasitizing freshwater fishes mainly in possessing the spicule with a simple rim of its proximal end and a non-expanded distal end, in the length of the spicule (0.218-0.295 mm), and the size (0.050-0.060 x 0.025-0.030 mm), shape and structure of eggs, and also in the host types and geographical distribution. Pseudocapillaria yucatanensis is the first known autochtonous species of Pseudocapillaria parasitizing freshwater fishes in Mexico.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
10. Seasonal dynamics of Proteocephalus torulosus (Cestoda: Proteocephalidae) in barbel (Barbus barbus) from the Jihlava River, Czech Republic
- Creator:
- Scholz, T. and Moravec, F.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Cestoda, Proteocephalus torulosus, barbel, seasonal cycle, Czech Republic, and Sialis lutaria
- Language:
- English
- Description:
- The proteocephalid tapeworm Proteocephalus torulosus (Batsch, 1786) exhibited a marked seasonality in its occurrence and maturation in barbel (Barbus harhus L.) from the Jihlava River, South Moravia, Czech Republic. Recruitment took place in winter and early spring, growth and maturation in spring and gravid worms left the fish hosts in May; during summer and autumn, the parasite was almost absent from the fish population. Parasite burden was related to fish size, with larger barbel being more heavily infected than smaller ones.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public