Folia Parasitologica, vol. 53 (2006), issue 1

Myxozoan genera: definition and notes on taxonomy, life-cycle terminology and pathogenic species

Jiří Lom, Iva Dyková

Folia Parasitologica 53[1] 1-36 (2006) | DOI: 10.14411/fp.2006.001

A list of myxozoan genera is presented in the current taxonomical scheme. These genera are defined; their type species and most important pathogens along with their hosts are listed. Simultaneously, definitions of actinospore stages representing sexual stages of the myxosporean life cycle are given; altogether, 17 actinospore collective groups with 180 types have been described. Life cycles of the two classes of the phylum Myxozoa, Malacosporea and Myxosporea, are briefly outlined with specification of the appropriate terms. Up to now, 4 malacosporean and 2,180 myxosporean species assigned to a total of 62 genera, have been established. The surviving...

Occurrence of the microsporidian parasite Nucleospora salmonis in four species of salmonids from the Massif Central of France

Hicham El Alaoui, Stéphane J. Grésoviac, Christian P. Vivarès

Folia Parasitologica 53[1] 37-43 (2006) | DOI: 10.14411/fp.2006.002

Nucleospora salmonis (Hedrick, Groff et Baxa, 1991), an intranuclear microsporidian parasite of marine and freshwater fish, causes diseases mainly in salmonid species. Losses have been reported in stocks of salmonid fish reared in the region of Auvergne (France). The cause of chronic mortalities in the local host species raised in aquaculture and destined for supplementation of the river system Loire-Allier was examined. The presence of N. salmonis was confirmed by PCR and histology in Salmo salar L. previously and in newly investigated salmonid species, Salmo salar, Salmo trutta fario L., Thymallus thymallus...

Morphological, developmental and ecological evidence for a progenetic life cycle in Neochasmus (Digenea)

J. Daniel McLaughlin, David J. Marcogliese, Jocelyn Kelly

Folia Parasitologica 53[1] 44-52 (2006) | DOI: 10.14411/fp.2006.003

Seven species of fishes, Catostomus commersonii (Lacépède), Etheostoma nigrum Rafinesque, Micropterus dolomieu Lacépède, Notemigonus crysoleucas (Mitchill), Notropis hudsonius (Clinton), Perca flavescens (Mitchill), and Percina caprodes (Rafinesque) from the St. Lawrence River, Quebec, Canada, were found infected with progenetic specimens of Neochasmus spp. in the orbits and/or the body musculature. Worms displayed varying degrees of maturation. Eggs occupied the entirety of the worm in late stages of development and persisted as distinct clusters in situ after worm death. Populations...

Plectanocotyle major sp. n. (Monogenea: Plectanocotylidae), a gill parasite of Chelidonichthys obscurus (Teleostei: Triglidae) from the Mediterranean Sea

Lobna Boudaya, Lassad Neifar, Louis Euzet

Folia Parasitologica 53[1] 53-56 (2006) | DOI: 10.14411/fp.2006.004

Plectanocotyle major sp. n. (Monogenea: Polyopisthocotylea: Plectanocotylidae) is described from Chelidonichthys obscurus (Bloch et Schneider, 1801) collected from the Mediterranean coasts (Tunisia and France). The new species is compared to Plectanocotyle gurnardi collected on Chelidonichthys gurnardus and the only other valid species in the genus Plectanocotyle. The new species differs from P. gurnardi by the clamp size (137 µm vs 64 µm for clamp length and 110 µm vs 60 µm for clamp width, respectively) and the length of the male copulatory organ (107 µm vs 144 µm, respectively)....

The handling and fate of spermatophores in Neoentobdella diadema and N. apiocolpos (Monogenea: Capsalidae: Entobdellinae)

Graham C. Kearn, Ian D. Whittington, Louis Euzet

Folia Parasitologica 53[1] 57-62 (2006) | DOI: 10.14411/fp.2006.005

The elongated encased spermatophores of the capsalid (entobdelline) monogeneans Neoentobdella diadema (Monticelli, 1902) Kearn et Whittington, 2005 and N. apiocolpos (Euzet et Maillard, 1967) Kearn et Whittington, 2005 have been found attached by their proximal ends to the region of the vaginal opening, with the bulk of the spermatophore projecting from the vagina and therefore lying outside the body. In spite of previous reports, no spermatophores were found projecting from the common genital opening and if spermatophore exchange is as rapid as it is in the related entobdelline Entobdella soleae, then the chances of finding a...

Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA

František Moravec, Isaurede Buron, William A. Roumillat

Folia Parasitologica 53[1] 63-70 (2006) | DOI: 10.14411/fp.2006.006

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...

Sub-tegumental ventral fibres surrounding the vaginal opening of Entobdella soleae (van Beneden et Hesse,1864) Johnston, 1929 (Platyhelminthes: Monogenea: Capsalidae)

Graham C. Kearn

Folia Parasitologica 53[1] 71-72 (2006) | DOI: 10.14411/fp.2006.007

The distribution of F-actin in the monogenean Entobdella soleae (van Beneden et Hesse, 1864) Johnston, 1929 (Platyhelminthes: Capsalidae) was revealed by staining paraformaldehyde-fixed specimens with FITC-labelled phalloidin. On the ventral surface on the left side of the body, just posterior to the pharynx, a concentrically arranged array of fluorescent fibres was observed, following a circular path around the tiny ventral opening of the vagina. It is assumed that this asymmetrically placed array of actin fibres is contractile and the possible role of these fibres in the assimilation of sperm from an attached spermatophore into the vagina...

Ultrastructure of the secondary osmoregulatory canals in the scolex and neck region of Silurotaenia siluri (Batsch, 1786) (Cestoda: Proteocephalidae)

Zdeňka Žďárská, Jana Nebesářová

Folia Parasitologica 53[1] 73-75 (2006) | DOI: 10.14411/fp.2006.008

The secondary osmoregulatory canals in the scolex and neck region of Silurotaenia siluri, a parasite of the catfish Silurus glanis (L.), terminate below the tegument basal plasma membrane. The basal plasma membrane of the osmoregulatory canal syncytium is in tight contact with the tegument basal plasma membrane.

M.L. Sood: Nematode Parasites of Birds (Including Poultry) from South Asia.

František Moravec

Folia Parasitologica 53[1] 76 (2006) | DOI: 10.14411/fp.2006.009

International Book Distributing Co., Lucknow (India) 2006. ISBN 81-8189-015-9, hardback, 824 pp., 495 figs. Price: US$ 100.00.

Klaus Rohde (Ed.): Marine Parasitology.

Jiří Lom

Folia Parasitologica 53[1] 77-78 (2006) | DOI: 10.14411/fp.2006.010

CSIRO Publishing, Collingwood VIC 3066, Australia; CABI Publishing, Wallingford, Oxon OX10 8DE, United Kingdom, 2005. ISBN 0 643 09025 8, hardback, 565 pp. Price: £ 60.00.