Systematic Parasitology

Johnson, Alan M.;Fielke, R.;Ellis, J.;O'Donoghue, P. J.;Baverstock, P. R.

doi: 10.1007/bf00012219pmid: N/A

Abstract Reverse transcription of ribosomal RNA (rRNA) was used to obtain partial sequences of the small subunit rRNA (ssrRNA) of three species of Eimeria: Eimeria maxima, Eimeria stiedae and Eimeria tenella. These sequences were aligned with the homologous ssrRNA sequence segments of a range of other organisms in the phylum Apicomplexa, along with representatives of the ciliates, fungi, flagellates, higher plants and higher eukaryotes. Two phylogenetic tree building methods were used to investigate the phylogenetic relationships among the Eimeria species, and between the Eimeria and the other organisms represented, using Vairimorpha necatrix as an outgroup. The results show that Eimeria is almost certainly monophyletic with the apicomplexans Sarcocystis, Toxoplasma and Cryptosporidium. The three species of Eimeria differ among each other at a maximum of 9 out of 600 nucleotides at the ssrRNA locus. Such intrageneric variation is high by vertebrate standards, but low by protist standards.

Jones, A.

doi: 10.1007/bf00012220pmid: N/A

Abstract The histological characteristics of the pharynx, terminal genitalium and acetabulum are described for four species of paramphistomes from fishes from Malaysia and Thailand. New pharyngeal and terminal genitalium types are designated for Osteochilotrema malayae, Helostomatis indica, Protocladorchis pangasii and P. chinabutae and new acetabular types for H. indica and P. pangasii.

Williams, Alan

doi: 10.1007/bf00012221pmid: N/A

Abstract Twelve species of monogeneans of the family Microcotylidae and one species of the family Heteraxinidae were collected from fishes of the Swan River Estuary and adjacent coastal marine embayments near Perth in Western Australia. The genera represented were: Microcotyle (four species), Solostamenides (one species), Diplasiocotyle (two species), Polylabris (five species) and Gonoplasius (one species). Microcotyle pomatomi Goto from Pomatomus saltator (Pomatomidae) is proposed as a senior synonym of M. australiensis MacCallum, M. debueni Mañé-Garzón and M. temnodontis Sandars from the same host. M. helotes Sandars, reported from the teraponid fishes Pelates sexlineatus (type-host) and Pelsartia humeralis (new record), is redescribed and illustrated. Microcotyle arripis Sandars from Arripis georgianus (Arripidae) is briefly redescribed and illustrated, and a single specimen of Microcotyle sp. from Sillaginodes punctatus (Sillaginidae) is reported. Solostamenides pseudomugilis (Hargis) from Mugil cephalus (Mugilidae) is redescribed and illustrated, and compared to S. mugilis from the same host. Recent reports and the affinities of Diplasiocotyle johnstoni Sandars and D. agonostomi (Sandars) from Aldrichetta forsteri (Mugilidae) are briefly discussed. The affinities of the genus Polylabris to the subfamily Prostatomicrocotylinae and the doubtful validity of the subfamily Polylabrinae are discussed. Polylabris sillaginae (Woolcock), a new record from Sillago schomburgkii (Sillaginidae), is redescribed and proposed as a senior synonym of P. parasillaginae (Sandars). Polylabris sandarsae n. sp. is described from Sillago maculata (Sillaginidae) as a new species based on the character combination of paired vaginal pores, 6–10 large testes and the haptor clearly overlapping the testicular field. Brief descriptions and illustrations of two unidentified species of Polylabris from the sillaginid fishes Sillaginodes punctatus and Sillago bassensis are included. They differ from previously described species in the low number, small size and distribution of the testes. A brief discussion is given of Polylabris gerres from Gerres subfasciatus (Gerridae). The heteraxinid Gonoplasius carangis from Pseudocaranx dentex (Carangidae) is redescribed and illustrated, detailing hamuli and marginal hooks for the first time. Specimens of all the above species are lodged in the British Museum (Natural History) Collection.

Agrawal, Nirupama

doi: 10.1007/bf00012222pmid: N/A

Abstract Cribromazocraes llewellyni n. sp. is described from a freshwater clupeid Hilsa ilisha (Ham.) from the Kanpur District, India. It is characterised by the presence of unbranched intestinal caeca, the number and arrangement of the genital spines, the shape of the clamp sclerites and the presence of marginal hooklets. This is the first record of the genus Cribromazocraes Mamaev, 1981 from India.

Macko, Jozef K.

doi: 10.1007/bf00012223pmid: N/A

Abstract New data are published on the size, the configuration of the cirrus and sacculus accessorius internus, as well as on other characters in the types and other specimens of Dicranotaenia querquedula (Fuhrmann, 1921) and Dicranotaenia parvisaccata (Shepard, 1943). Both the taxa are characterised by dorso-anteriorly situated sacculus accessorius internus, which is narrower than the width of the cirrus at its base. They differ from each other (except for one worm) in the shape of the cirrus and in other characters. The discussion also includes comments on Dujardin's original description of Dicranotaenia coronula.

Beverley-Burton, Mary;Chisholm, Leslie A.;Last, Peter

doi: 10.1007/bf00012224pmid: N/A

Abstract Chimaericola ogilbyi n. sp. and C. colliei n. sp. are proposed for chimaericolids found on the gills of the ghost shark, Hydrolagus ogilbyi taken off the coast of southeastern Australia, and the ratfish, H. colliei, taken off the coast of Vancouver Island, respectively. Supplementary observations on C. leptogaster, the type-species of the genus Chimaericola, are included. The two new species are differentiated on the size and shape of the median sucker sclerite, hamuli, spines of the male copulatory apparatus and eggs. Amended diagnoses for the family Chimaericolidae and genus Chimaericola are provided.

Rushton-Mellor, Sophie K.

doi: 10.1007/bf00012225pmid: N/A

Abstract A new species of Argulus (Crustacea: Branchiura) is described from a sleeper, Bunaka herwerdeni (Weber), in Papua New Guinea. It is characterised by the shape of the respiratory areas, the number and shape of supporting sclerites in the suckers of the first maxilla, as well as the accessory copulatory structures on the third and fourth legs of the male.

Deets, G. B.;Kabata, Z.

doi: 10.1007/bf00012226pmid: N/A

Abstract A new species of parasitic copepod, Lernanthropus corteziensis (Siphonostomatoida: Lernanthropidae), is described and illustrated. The copepod has been found in the Sea of Cortez (Bahia de la Paz) on the gills of Diapterus peruvianus, a teleost fish known in the local vernacular as “mojarra”.