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1

Trematodes from Red Sea fishes: Gibsonius aegyptensis gen.nov., sp.nov. [Lepocreadiidae Odhner, 1905] and Helicometra interrupta sp.nov. [Opecoelidae Ozaki, 1925]

100%
Hassanine R. M. E.-S.
Acta Parasitologica
|
2005
|
tom 50
|
nr 4
Specimens of the marine fishes Rhabdosargus haffara (Sparidae) and Cociella crocodilo (Platycephalidae) were caught in the Red Sea off the coast of Sharm El-Sheikh, South Sinai, Egypt. Eight (20%) and 15 (43%) of these fishes, respectively, were found to harbour intestinal trematodes. R. haffara was parasitised by Gibsonius aegyptensis gen. nov., sp. nov. (Lepocreadiidae) and C. crocodilo by Helicometra interrupta sp. nov. (Opecoelidae). Gibsonius is similar to Myzoxenus Manter, 1934 and Diploproctia Mamaev, 1970 in having a ventral sucker with two longitudinal lips of a lamellar nature at its aperture, but differs greatly from each in other features: from Myzoxenus in having tegumental spines heavily distributed throughout the entire body surface, symmetrically arranged testes, a cirrus sac extending well posterior to the ventral sucker, a median genital pore, and vitelline follicles terminating posteriorly at the testicular level; and from Diploproctia in having an oval body, intestinal caeca which end blindly near the posterior extremity, a median genital pore between the intestinal bifurcation and ventral sucker, a pretesticular unlobed ovary, a uterus mainly situated dextral to the ovary, and vitelline follicles terminating posteriorly at the testicular level. Helicometra interrupta sp. nov. is similar to H. equilata, H. nasae and H. pteroisi in having a short fore- body and a long cirrus sac extending posterior to the ventral sucker, but differs significantly in having a shorter forebody (about 10% of body length), a curved cirrus sac extending posteriorly to a third of the distance between the ventral sucker and the ovary, vitelline follicles which terminate anteriorly at considerable distance posterior to ventral sucker and which are distinctly interrupted twice in the pre-testicular region, and smaller eggs.
2

A review of the Lepocreadiidae (Digenea, Lepocreadioidea) from fishes of the waters around New Caledonia

84%
Bray R. A., Justine J.-L.
Acta Parasitologica
|
2012
|
tom 57
|
nr 3
The lepocreadiid fauna of New Caledonia is reported and discussed and a new species and several new host and locality records presented. Hypoporus plataxi sp. nov. from Platax teira is described and distinguished from its only congener by its terminal genitalia, the structure of the anterior part of the alimentary system and other morphological features. New host and locality records and a description are given of Lepotrema cf. clavatum Ozaki, 1932 in Sufflamen fraenatum. New host and locality records are given of Lobatocreadium exiguum (Manter, 1963) in Pseudobalistes fuscus, which is also reported in the known hosts Abalistes filamentosus and Sufflamen fraenatum. New host and locality records are given of Opisthogonoporus amadai Yamaguti, 1937 in Branchiostegus wardi. A new host record is made for Holorchis plectorhynchi Durio et Manter, 1968 in Diagramma pictum. New records in New Caledonian waters are of Bulbocirrus aulostomiYamaguti, 1965 in Aulostomus chinensis, Echeneidocoelium indicum Simha et Pershad, 1964 in Echeneis naucrates, Lepidapedoides kalikali Yamaguti, 1970 in Pristipomoides auricilla, Neomultitestis aspidogastriformis Bray et Cribb, 2003 in Platax teira, Opechona bacillaris (Molin, 1859) in Rastrelliger kanagurta, Prodistomum keyam Bray et Cribb, 1996 in Monodactylus argenteus and Pseudopisthogonoporus vitellosus (Pritchard, 1963) in Naso brevirostris and N. annulatus. New metrical data are presented for Holorchis castex Bray et Justine, 2007 in Diagramma pictum, Hypocreadium patellareYamaguti, 1938 in Sufflamen fraenatum, Intusatrium robustum Durio et Manter, 1968 in Bodianus loxozonus and B. perditio and Lepidapedoides angustus Bray, Cribb et Barker, 1996 in Epinephelus chlorostigma, E. fasciatus, E. maculatus and E. retouti. Literature records are included and the fauna in general discussed.
3

Digeneans of the families Opecoelidae and Lepocreadiidae, parasites of Lepidonotothen macrophthalma from the North Scotia Ridge, and remarks on the discrimination of Neolepidapedon magnatestis and N.trematomi

84%
Zdzitowiecki K.
Acta Parasitologica
|
1999
|
tom 44
|
nr 4
Twenty fishes Lepidonotothen macrophthalma (Norman) caught at the North Scotia Ridge were examined. They harboured four digenean species - the opecoelids, Macvicaria antarctica (Kovalyova et Gaevskaya, 1974) and M. skorai sp. n., the lepocreadiid, Neolepidapedon magnatestis (Gaevskaya et Kovalyova, 1976), and the unnamed hemiurid (presently not described). The total prevalence of Digenea (four species) was 55%, intensity range 2-21 and relative density 3.50. M. skorai sp. n., which occurs sympatrically with M. antarctica, is described. M. skorai sp. n. is characterised by the cirrus sac reaching posterior to the ventral sucker, sucker ratio based on mean diameter 1:1.50-1.92 (mean 1.74), oblique arrangement of testes, egg length 0.043-0.055 mm (usually 0.045-0.051 mm) and testes usually obscured dorsally by vitelline follicles. This species is compared with all Antarctic and sub-Antarctic Macvicaria occurring in Perciformes. N. magnatestis is redescribed from the nototheniids L. macrophthalma and L. squamifrons (Günther) and compared with N. trematomi Prudhoe et Bray, 1973. Specimens previously reported by Zdzitowiecki (1990b) as N. magnatestis collected from Trematomus hansoni and T. bernacchii in the South Shetland Islands area and from Dissostichus eleginoides collected off the Shag Rocks (South Georgia area) are considered N. trematomi.
4

Diploproctodaeum spp. [Digenea, Lepocreadiidae] in Australian and New Caledonian waters including two new species from Tetraodontiformes and new records of related species

67%
Bray R. A., Cribb T. H., Justine J.-L.
Acta Parasitologica
|
2010
|
tom 55
|
nr 4
313-326
Diploproctodaeum monstrosum sp. nov. is described from Arothron stellatus and A. mappa from off Lizard Island, northern Great Barrier Reef. It differs from its congeners in having a body-length ventral scoop. Diploproctodaeum triodoni sp. nov. is described from Triodon macropterus off New Caledonia. It is distinguished by the extensive vitelline fields usually reaching to the ventral sucker and the folded scoop margins. Other related species are reported from new hosts or localities and dimensions are supplied for: Diploproctodaeum haustrum from Aluterus monoceros off New Caledonia; Diploproctodaeum arothroni from Arothron hispidus off Lizard Island and Ningaloo Reef, northern Western Australia, A. nigropunctatus off Lizard Island and Arothron manilensis off New Caledonia; Diploproctodaeum macracetabulum from Abalistes stellatus on the Swain Reefs, southern Great Barrier Reef and off New Caledonia; Diploproctodaeum momoaafata from Ostracion cubicus off Lizard Island; Diploproctodaeum rutellum from Platax teira off Heron Island, southern Great Barrier Reef; Diploproctodaeoides longipygum from Abalistes stellatus on the Swain Reefs and off New Caledonia; Diplocreadium tsontso from Balistoides conspicillum off Heron Island; Bianium arabicum from Lagocephalus sceleratus off New Caledonia. Attention is drawn to apparent convergent evolution in the body form of several families of trematodes infecting tetraodontids and especially species of Arothron.
5

Description of Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) from sub-Antarctic notothenioid fishes

67%
Jezewski W., Zdzitowiecki K., Laskowski Z.
Acta Parasitologica
|
2011
|
tom 56
|
nr 3
Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) is reported from the intestine, mainly the jejunum, of fishes in the eastern mouth of the Beagle Channel and in the harbour of Ushuaia in the Beagle Channel (Tierra del Fuego, Argentina) at a depth 7–30 m. The typical host is Patagonotothen longipes, other hosts are P. tessellata, P. brevicauda and Champsocephalus esox. The male terminal genitalia indicates that the new species belongs to the genus Neolepidapedoides (Lepocreadiidae, Lepocreadiinae). The most important taxonomic features are the presence of eye-spots, the spined tegument, the “Opechona-type” cirrus-sac, the external seminal vesicle free in the parenchyma, the gonads arranged in tandem, the vitelline follicles extending from the level of the oesophagus in the forebody to the posterior end of the body and an I-shaped excretory vesicle reaching to the intestinal bifurcation and the absence of a pseudoesophagus. Ten previously described species differ from the N. subantarcticus sp. nov. mainly in the extent of the vitelline fields and length of the excretory vesicle which reaches into forebody.
6

Hypocreadium caputvadum sp. nov. (Digenea, Lepocreadiidae), an intestinal parasite of the grey triggerfish, Balistes capriscus (Teleostei, Balistidae) from the Gulf of Gabes, Mediterranean Sea

67%
Kacem H., Derbel H., Neifar L.
Acta Parasitologica
|
2011
|
tom 56
|
nr 3
Hypocreadium caputvadum sp. nov. (Digenea, Lepocreadiidae) is described from the intestine of Balistes capriscus Gmelin collected from the Gulf of Gabès (Tunisia) in the southern Mediterranean Sea. This new species can be distinguished by a combination of characteristics shared by no other described species of Hypocreadium Ozaki, 1936. These characteristics include the presence of a distinct anterior notch, the follicular vitellarium confluent in the forebody, the presence of a muscular sphincter at the level of the anterior third of the metraterm and the size and the position of the cirrus-sac.
7

Two new species of lepidapedines [Digenea, Lepocreadiidae] from the King George whiting Sillaginodes punctata [Perciformes, Sillaginidae] from off Kangaroo Island, South Australia

67%
Bray R. A., Cribb T. H., Pichelin S. P.
Acta Parasitologica
|
1999
|
tom 44
|
nr 2
Two new lepidapedine lepocreadiids, Austroholorchis procerus sp. n. and Lepidapedella sillaginodesi gen. n., sp. n., are described from the teleost Sillaginodes punctata taken near Kangaroo Island, South Australia. Austroholorchis procerus is distinguished from its congeners by its elongate shape, the extent of the vitelline fields, the confluence of vitelline fields between the testes and the length of the hindbody. Lepidapedella sillaginodes is distinguished from most lepidapedine genera by the delimited external seminal vesicle (also interpretable as the proximal part of a bipartite cirrus-sac). The new genus is distinguishable from its closest relative, Lepidapedon, by the narrow internal male duct, the position of the ovary adjacent to the ventral sucker, by muscular features associated with the metraterm and the distribution of the uterus. Some general features of digenean parasites in sillaginid fishes are discussed.
8

Digenea of fishes of the Weddell Sea. III. The Lepocreadiidae [genera Neolepidapedon and Lepidapedon], parasites of Notothenioidea

67%
Zdzitowiecki K., Cielecka D.
Acta Parasitologica
|
1997
|
tom 42
|
nr 2
Three lepocreadiid digenean species of two genera, Neolepidapedon Manter, 1954 and Lepidapedon Stafford, 1904, occur in notothenioid fishes of the genera Trematomus (Nototheniidae), Artedidraco and Pogonophryne (both Artedidraconidae), Bathydraco and Prionodraco (both Bathydraconidae) in the Weddell Sea. Descriptions of all species, including a new one and two previously recorded in the high Antarctic, are given. Neolepidapedon trematomi Prudhoe et Bray, 1973 is recorded in 4 host species, three of the genus Trematomus (2 new host species) and Pogonophryne permitini (new host species and family), for the first time in the Weddell Sea and south to 70°S. Lepidapedon garrardi (Leiper et Atkinson, 1914) and L. balgueriasi sp. n. belong to the “Beveridgei subgroup” of Bray and Gibson (1995). L. garrardi has the excretory vesicle reaching to the level of the border between the testes and it is transferred to this subgroup from the “Garrardi subgroup”, which is renamed to the “Zubchenkoi subgroup”. This species is recorded in 9 host species (7 new hosts), for the first time in the Weddell Sea. L. balgueriasi sp. n. is recorded in 4 species of the genus Trematomus, including T. loennbergi (type-host). This species has eggs similar in number and size to L. garrardi (egg length exceeding 0.1 mm), but it has relatively smaller suckers and pharynx, and vitelline follicles confluent in the forebody and dorsally to the testes; its site is in the pyloric caeca and anterior part of the small intestine. A key to species of the “Beveridgei subgroup” of the genus Lepidapedon is given.
9

Trematodes from Red Sea fishes: Proneohelicometra aegyptensis gen.nov., sp.nov. [Opecoelidae Ozaki, 1925] and Neohypocreadium gibsoni sp.nov. [Lepocreadiidae Odhner, 1905]

67%
Hassanine R. M. E.-S.
Acta Parasitologica
|
2006
|
tom 51
|
nr 4
Specimens of the fishes Pterois volitans Linnaeus (Scorpaenidae) and Chaetodon auriga Forsskål (Chaetodontidae) were caught in the Red Sea off the coast of Sharm El-Sheikh, South Sinai, Egypt. Five (20%) and 20 (44%) of these fishes, respectively, were found to harbour intestinal trematodes. P. volitans was parasitised by Proneohelicometra aegyptensis gen. nov., sp. nov. (Opecoelidae) and C. auriga by Neohypocreadium gibsoni sp. nov. (Lepocreadiidae). Proneohelicometra gen. nov. is similar to Neohelicometra Siddiqi et Cable, 1960 which is the only opecoelid genus having caeca opening with separate ani and eggs with unipolar filaments, but differs significantly from it in having two lateral folds of body wall extending along the posterior third of body, an oral sucker smaller than the ventral sucker, a median cirrus sac not reaching the ventral sucker posteriorly and a median genital pore situating immediately posterior to the intestinal bifurcation. Neohypocreadium gibsoni sp. nov. is similar to the other four species of the genus, but is unique in having a distinctly pear-shaped body and a much smaller egg size, and differs significantly from each in several other characters: from N. longisaccatum, it differs in having a cirrus sac not reaching the testes and a pretesticular ovary; from N. dorsoporum in having an external seminal vesicle much shorter than the cirrus sac, a longer cirrus sac extending posteriorly to the level of the posterior margin of the ventral sucker and a pretesticular ovary; from N. chaetodoni in having a smaller body size, symmetrical testes, a longer cirrus sac extending posteriorly to the level of the posterior margin of the ventral sucker and a trilobed ovary; and from N. aegyptense in having a smaller body size, symmetrical testes, a longer cirrus sac extending posteriorly to the level of the posterior margin of the ventral sucker, a trilobed ovary and vitelline follicles terminating anteriorly at the level of oesophagus. Neohypocreadium Machida et Uchida, 1987 is briefly reviewed.
10

Diversity of the digenean fauna in sparid fishes from the Lagoon of Bizerte in Tunisia

59%
Ben Abdallah L. G., Antar R., Maamouri F.
Acta Parasitologica
|
2011
|
tom 56
|
nr 1
A total of 24 digenean species belonging to 10 distinct families (Derogenidae, Faustulidae, Fellodistomidae, Gyliauchenidae, Hemiuridae, Lepocreadiidae, Mesometridae, Monorchiidae, Opecoelidae and Zoogonidae) were recorded in sparid fishes from Bizerte Lagoon (northern Tunisia). The diversity of the digenean fauna of sparid fishes from this locality is compared to that recorded from the Gulf of Tunis. Prodistomum polonii, not detected before, was found in Sarpa salpa. Aphallus rubalo, Derogenes latus, Holorchis micracanthum and Pachycreadium carnosum previously recorded from sparid fishes on the Tunisian coasts were absent during this study. Allopodocotyle pedicellata, Lepocreadium pegorchis, L. album, Proctoeces maculatus, Magnibursatus bartolii and Macvicaria maillardi were reported in hosts not previously reported for the Gulf of Tunis. Generally, prevalence was higher in fishes from Bizerte Lagoon but abundance and mean intensity were higher in Gulf of Tunis. Except for Lithognathus mormyrus, Sarpa salpa and Sparus aurata from Bizerte Lagoon, which show higher digenean diversity, the other sparid fishes have a lower diversity compared to those from Gulf of Tunis. The species richness of digeneans in B. boops was the same in the two areas studied.
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