Showing papers on "Digenea published in 1987"
TL;DR: Ulastructural evidence is presented suggesting that the membranous egg-capsule of the zoogonines shows vestiges of the three layers of a normal tanned egg-shell, but little general information on the zoogeography of the group was discovered.
Abstract: A detailed revision of the zoogonid subfamily Lepidophyllinae is presented, using morphological characters discussed in an earlier paper. Twelve genera and 50 species are treated in detail with keys and cladograms to genera and species. The genera and species covered are: Lepidophyllum steenstrupi, L. appyi, L. armatum, L. brachycladium, L. cameroni, L. pleuronectini, L. pyriforme, L. schantaricum, Urinatrema hispidum, U. hirudinacea, Panopula cavernossa, P. bridgeri, P. spinosa, Limnoderetrema minutum (Manter, 1954) [formerly Deretrema] n.g. (in freshwater fishes; genital pore at oral sucker or pharynx level), n. comb., Brachyenteron peristedioni, B. acropomatis, B. campbelli, B. doederleiniae, B. magnibursatum, B. parexocoeti, B. pycnorganum, Steganodermatoides kergeleni, S. agassizi, S. allocytti, S. maceri, Neosteganoderma glandulosum, N. infundibulum, Proctophantastes abyssorum, P. gillissi, Deretrema (Deretrema) fusillus, D. (D.) cholaeum, D. (D.) pacificum, D. (Spinoderetrema) plotosi, D. (S.) acutum, D. (S.) fellis, D. (S.) ovale, D.(S.) sebastodis, D. (Luxitrema) philippinensis, D. plagiorchis, Pseudochetosoma salmonicola, Overstreetia sodwanaensis, Steganoderma (Steganoderma) formosum, S. (S.) atherinae, S. (Lecithostaphylus) retroflexum, S. (L.) depauperati (Yamaguti, 1970) n. comb., S. (L.) hemirhamphi, S. (L.) nitens, S. (L.) parexocoeti, S. macrophallos, S. oviformis. Most zoogonids were found to exhibit some level of predilection for a particular piscine host group, but little general information on the zoogeography of the group was discovered. Ultrastructural evidence is presented suggesting that the membranous egg-capsule of the zoogonines shows vestiges of the three layers of a normal tanned egg-shell.
47 citations
TL;DR: Mitochondria are absent from the adult surface syncytium and tegumental cells, suggesting that the teguments of the paramphistomes Gigantocotyle explanatum, Srivastavaia indica and Gastrothylax crumenifer is largely protective in function and probably has limited absorptive potential.
24 citations
23 citations
TL;DR: It is suggested that oviparity is more primitive (ancestral) than viviparity based on adult morphology and on the evidence of life-cycle studies.
18 citations
TL;DR: A parasite survey of brook charr (Salvelinus fontinalis) was conducted between January 1981 and December 1982 in the Tabusintac River, New Brunswick, Canada, and first-time anadromous charr or smolts were differentiated by the absence of marine parasites and infection with freshwater parasites only.
Abstract: A parasite survey of 1146 brook charr (Salvelinus fontinalis) was conducted between January 1981 and December 1982 in the Tabusintac River, New Brunswick, Canada. A total of 36 parasite species were recovered, of which 18 (one Myxosporea, two Monogenea, three Digenea, three Cestoidea, five Nematoda, one Acanthocephala, one Hirudinoidea, one Crustacea, and a Dermocystidium sp.) were freshwater and 18 (two Monogenea, seven Digenea, two Cestoidea, two Nematoda, two Acanthocephala, and three Crustacea) were marine. Anadronomous charr were differentiated from nonanadromous charr in fresh water by the presence of marine parasites. Charr in the estuary and lagoon were all considered to be anadromous; however, first-time anadromous charr or smolts were differentiated by the absence of marine parasites and infection with freshwater parasites only. New host records include Lecithaster gibbosus, Zoogonus lasius, Podocotyle angulata, Cryptocotyle lingua (metacercariae), Stephanostomum tenue (metacercariae, adults), E...
15 citations
10 citations
TL;DR: Life cycle studies of Paradistomum geckonum (Dicrocoeliidae) were attempted experimentally, with the pulmonate gastropod Lamellaxis gracilis served as the first intermediate host.
Abstract: Life cycle studies of Paradistomum geckonum (Dicrocoeliidae) were attempted experimentally. The pulmonate gastropod Lamellaxis gracilis served as the first intermediate host; geckonid lizards (Cosy...
8 citations
01 Jan 1987
TL;DR: The trematode genus Pseudoplagioporus Y amaguti, 1938 is briefly reviewed and P. microrchis Yamaguto, 1942 is redescribed from Lethrinus lentjan and L. nebulosus caught from Qatari waters in the Arabian Gulf.
Abstract: The trematode genus Pseudoplagioporus Y amaguti, 1938 is briefly reviewed. P. microrchis Yamaguti, 1942 is redescribed from Lethrinus lentjan and L. nebulosus caught from Qatari waters in the Arabian Gulf. This is the first record of P. microrchis from the Arabian Gulf. Lethrinus lentjan represents a new host record for that trematode.
7 citations
TL;DR: The presence of D. leiolopismae in reptiles on Stephens Island, to which no exotic reptiles or amphibians have been introduced, indicated that the species is probably endemic to New Zealand.
Abstract: Two species of Dolichosaccus occur in New Zealand. Dolichosaccus (Lecithopyge) novae-zealandiae Prudhoe, 1970 was described from frogs of the endemic genus Leiopelma. An additional six specimens, one of which is figured, were obtained from preserved frogs. Dolichosaccus (Lecithopyge) leiolopismae n. sp. was described from scincid lizards of the genus Leiolopisma and from the tuatara (Sphenodon punctatus). Information on variability in the new species was presented and discussed. Morphological criteria for distinguishing between species in Dolichosaccus were few and unreliable. The presence of D. leiolopismae in reptiles on Stephens Island, to which no exotic reptiles or amphibians have been introduced, indicated that the species is probably endemic to New Zealand.
4 citations