| [phyletic affinities among polystomatidae (monogenea)]. | the chaetotaxy and ciliated cells in two monogenean larvae of marine fishes are described for the first time: a monopisthocotylea diplectanum aequans (wagener, 1857) diesing, 1858 parasite of dicentrarchus labrax (l) and a polyopisthocotylea, microcotyle mormyri lorenz, 1878 parasite of pagellus mormyrus (l). a comparative study with the known larvae shows evidence of two larval types in the monogenea of fishes, related to the two great phyla of the class: the monopisthocoytylea and polyopisthoc ... | 1977 | 413661 |
| [investigations on the oncomiracidium of capsalidae (monogenea) (author's transl)]. | a detailed study of the ciliated cells and chetotaxy of the larva of benedenia monticelli (parona y perugia, 1895) parasite of mugil cephalus l. is carried out. observations on the oncomiracidium of trochopus pini (van beneden and hesse, 1863) and entobdella soleae (van beneden and hesse, 1863) reveal a common plan of these structures among those capsalidae. the pattern is different from that observed in the dactylogyroïdea on one hand and polyopisthocotylea on the other hand. the chetotaxic typ ... | 1978 | 727639 |
| [study of the larval stages of monogenea of fishes (author's transl)]. | the ciliate cells and the oncomiracidial chetotaxy of the following species are described: among the polyopisthocotylea : gastrocotyle trachurii van bneden and hesse, 1863, gastrocotylidae, parasite of trachurus trachurus (l.); cyclocotyla bellones (otto, 1821), diclidophoradae, living on the cymothoides isopods of sparidae : boops boops (l.) and spicara maena (l.) ; mazocraes sp., mazocraeidae, parasite of sardinella maderensis (lowe, 1841). among the monopisthocotylea : ligophorus vanbenedeni ... | 1978 | 754614 |
| amino acids in eight species of monogenea. | the ethanol-extractable amino acids of several species of monogenea were analysed. in the monopisthocotylea levels were high ( greater than 1,200 micronmoles/g/ethanol extracted dry wt); in the polyopisthocotylea lower amounts were present (196-562 micronmoles). high proline levels were present in parasites of hosts from a marine environment but low in freshwater forms. no correlation between diet and proline content was observed. | 1977 | 871066 |
| ultrastructure of the protonephridial system, of anoplodiscus cirrusspiralis (monogenea monopisthocotylea). | the flame bulb is formed by a terminal cell and a proximal canal cell. the weir consists of interdigitating ribs all of which form one circle, i.e. alternating ribs do not have distinctly 'internal' or 'external' positions. cytoplasmic cords are absent and all ribs, i.e. those continuous with the proximal canal cell and those continuous with the terminal cell, form external leptotriches. at least some external leptotriches have interconnected branches extending along the flame bulb. internal lep ... | 1992 | 1644519 |
| the effects of periodic eutrophication on parasitism and stock identification of trematomus bernacchii (pisces: nototheniidae) in mcmurdo sound, antarctica. | mcmurdo sound, antarctica, is suited for the study of the effects of eutrophication on diet-related parasites of trematomus bernacchii (boulenger, 1902) (pisces). it has been relatively well studied, the environment is predictable, and there are significant differences in primary productivity over small distances. the differences in parasitism for 5 helminth species can be attributed to the enrichment processes in the sound. the prevalences of the acanthocephalan echinorhynchus sp., the nematode ... | 1991 | 1865261 |
| size differences in hamuli of kuhnia scombri (monogenea: polyopisthocotylea) from different geographical areas not due to differences in host size. | hamuli of kuhnia scombri from scomber australasicus and s. japonicus from several localities in the pacific ocean show marked differences in length. hamuli from large fish are slightly longer than those from small fish caught in the same geographical area (northern new zealand). differences correlated with host size are much less than those associated with geographical area and may be due to infections acquired in different localities. taxonomic studies of monogenea must take geographical variat ... | 1991 | 2040558 |
| [hypothesis of the biogeographical origin of diplozoon (monogenea, polyopisthocotylea)]. | the evolutionary geographic origin of diplozoon and octomacrum (monogenea, polyopisthocotylea) is discussed. diplozoon occurs in eurasia and africa, whereas the distribution of octomacrum is limited to north-america. these two monogeneans likely had a common progenitor originating from the pacific. this hypothesis is suggested by the morpho-anatomical resemblances between diplozoon and octomacrum and by the analysis of their geographic distribution. | 1988 | 3421647 |
| the aflagellate spermatozoon of diplozoon (platyhelminthes: monogenea: polyopisthocotylea): a demonstrative case of relationship between sperm ultrastructure and biology of reproduction. | diplozoon is known to display an exceptional biology of reproduction: the hermaphroditic adults are permanently fused together and their genital ducts communicate. in contrast to all other polyopisthocotylean monogeneans in which the spermatozoa show an homogeneous biflagellate structure, the spermatozoon of diplozoon is aflagellate. it is filiform, and composed of a cytoplasmic region and a nuclear region. the cytoplasmic region exhibits mitochondria, a well-developed smooth endoplasmic reticul ... | 1985 | 3831385 |
| proceedings: fine structure of mehlis' gland and ootype in diplozoon paradoxum (monogenea: polyopisthocotylea). | | 1974 | 4419376 |
| light and scanning electron microscopy of attachment organs of three monogeneans (monogenoidea: polyopisthocotylea). | | 1974 | 4817539 |
| [ultrastructure of the spermatozoon of the monogenean hexostoma (polyopisthocotylea, hexostomatidae)]. | the middle region of the spermatozoon of hexostoma exhibits two 9 + "1" axonemes, the nucleus, the mitochondrion, and cortical longitudinal microtubules. the ultrastructure is similar to that of other polyopisthocotylean monogeneans and this confirms the position of the family hexostomatidae within polyopisthocotyleans. | 1984 | 6465789 |
| octomacrum microconfibula (monogenea: polyopisthocotylea) from a british columbia lake. | | 1980 | 7218110 |
| ultrastructure of the buccal complex of polylabroides australis (monogenea, polyopisthocotylea, microcotylidae). | the two buccal suckers have a largely muscular septum each and, near the pharynx, dorsal swellings ("valve apparatus") extend into the lumen of the suckers. in the posterior parts of the suckers, the tegument forms a "rim" containing much electron-dense material. the walls of the suckers are mainly formed by muscle filaments, and there are several large vacuolated masses containing lipid (?) globules and vacuoles. the most anterior part of the pharynx contains a thick layer of electron-dense mat ... | 1995 | 7601589 |
| ultrastructure of the surface structures of allodiscocotyla diacanthi (polyopisthocotylea: monogenea) from the gills of the marine teleost fish, scomberoides tol. | scanning and transmission electron microscopic studies have been made of the surface architecture of the fish-gill parasite, allodiscocotyla diacanthi. observations of the haptor region have revealed the presence of cushion-like supports at the base of each clamp, together with a pair of anchor-hooks. other topographical features observed included a mid-ventrally positioned genital atrium and a ventrolateral vaginal pore. tegumental serrations, composed of electron-dense bars, partially cover th ... | 1995 | 7797372 |
| the ultrastructure of the tegument and clamp attachment organ of gotocotyla bivaginalis (monogenea, polyopisthocotylea). | the tegument of gotocotyla bivaginalis consists of a syncytium, perikarya and four kinds of secretory bodies, viz. electron-dense granules, moderately electron-dense vesicles, electron-lucent vesicles and large multivesicular bodies occurring in the ratio of 83:50:40:1. microvillus-like structures, finger-like projections and a thin coat of glycocalyx occur on the in contrast, the syncytium of the clamp is relatively thin and irregularly folded, containing only three kinds of secretory bodies, v ... | 1993 | 8496003 |
| ultrastructure of the gut caecal epithelium of pricea multae (monogenea: polyopisthocotylea). | ultrastructural observations of the gut caecal epithelium of pricea multae revealed the presence of pigmented and non-pigmented digestive cells. the pigmented digestive cells were separated by a connecting syncytium and appeared elongated, with numerous vesicles appearing toward the apical cell surface. they were characterised by granular inclusions in the form of electron-dense pigments, which were eliminated by exocytosis. these cells and their lamellar connecting syncytium were observed proje ... | 1996 | 8740546 |
| ultrastructure of the surface structures and electron immunogold labeling of peptide immunoreactivity in the nervous system of pseudothoracocotyla indica (polyopisthocotylea: monogenea). | transmission electron microscope studies of the tegument of the tropical marine fish monogenean parasite pseudothoracocotyla indica describe surface specialisations and detail the ultrastructure of the tegument and the haptor. the tegument consists of a syncytium, numerous electron-dense granules, electron-lucent vesicles and large multivesicular bodies. the posterior tegumental syncytium is infolded to form tegumental ridges that are present on both the ventral and dorsal surfaces. a thin coat ... | 1996 | 8875573 |
| cholinergic, serotoninergic and peptidergic components of the nervous system of discocotyle sagittata (monogenea:polyopisthocotylea). | cholinergic, serotoninergic (5-ht) and peptidergic neuronal pathways have been demonstrated in both central and peripheral nervous systems of adult discocotyle sagittata, using enzyme histochemistry and indirect immunocytochemistry in conjunction with confocal scanning laser microscopy. antisera to 2 native flatworm neuropeptides, neuropeptide f and the fmrfamide-related peptide (farp), gnffrfamide, were employed to detect peptide immunoreactivity. the cns is composed of paired cerebral ganglia ... | 1996 | 9024885 |
| ultrastructure of spermatogenesis of atriaster heterodus (platyhelminthes, monogenea, polypisthocotylea). | the development of spermatozoa in the polyopisthocotylea atriaster heterodus was studied by transmission electron microscopy. spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. primary spermatocytes had sparse chromatin and typical synaptonemal complexes. the nuclear chromatin of secondary spermatocytes was in patches along the nuclear envelope and throughout the nucleoplasm. the complete process of fusion of the early spermatids to a common cytoplasmic mass forming ... | 1997 | 9406770 |
| phylogenetic analysis of the monogenea and their relationships with digenea and eucestoda inferred from 28s rdna sequences. | platyhelminth phylogeny is controversial. phylogenetic analyses of the partial domain c1 and the full domains d1 and c2 (358 nucleotides) from the 28s ribosomal rna gene for 21 species from the monogenea, digenea, cestoda, and, as the outgroup, tricladida reveal major departures from prevailing theory. the digenea and not the monogenea (monopisthocotylea and polyopisthocotylea) form the sister group of the cestodes; the monopisthocotylea and polyopisthocotylea are each monophyletic, but the mono ... | 1997 | 9476791 |
| ultrastructure of the terminal globule of the oncomiracidium of zeuxapta seriolae (meserve, 1938) (monogenea, polyopisthocotylea, axinidae). | | 1998 | 9493218 |
| the ultrastructure of the gastrodermis and the nutrition of the gill parasitic atriaster heterodus lebedev and paruchin, 1969 (platyhelminthes: monogenea). | the gastrodermis of atriaster heterodus lebedev & paruchin, 1969 (polyopisthocotylea), a gill parasite from diplodus argenteus (valenciennes, 1930), is composed of "u"-shape hematin cells and a connecting syncytium, both having cytoplasmic lamellae. these cells show outgrowths and bent folds which were sent to enclose lumen material. the trapped material was then subjected to endocytosis. the nature of ingested food material was comparatively analyzed by cytochemical and histochemical test. bloo ... | 1998 | 9698909 |
| the phylogenetic position of udonella (platyhelminthes). | phylogenetic analysis of molecular data from complete 18s rrna and partial 28s rrna genes, of a variety of platyhelminths, places the enigmatic udonella caligorum firmly as a monopisthocotylean monogenean. both maximum parsimony and a modified distance measure, operating under a maximum likelihood model, gave identical solutions for each data set. these data further support morphological evidence from ultrastructural studies indicating the neodermatan affinities of udonella, namely shared featur ... | 1998 | 9762571 |
| the selection of habitats among the monogenea. | the pressures responsible for the selection of "non-ectoparasitic" habitats in the monogenea are discussed. it is suggested that certain monogeneans have become internal to reduce the pressures exerted by predators of ectoparasites rather than to avoid competition with other ectoparasites or to have access to better resources. the fact that these movements have concerned the monopisthocotylea rather than the polyopisthocotylea could be related to the different mode of invasion by oncomiracidia i ... | 1998 | 9801922 |
| non-monophyly of the monogeneans? | there is currently no congruence between phylogenies based on morphology, in which the monogenea are considered a monophylum, and molecular phylogenies based on 18s or 28s rdna, in which the monogenea are never considered monophyletic. however, all analyses based on morphology and sperm characters or molecular data found constantly the two subgroups composing the monogenea, namely the monopisthocotylea and polyopisthocotylea (or polyonchoinea and oligonchoinea) to be independently monophyletic. ... | 1998 | 9801923 |
| pseudanthocotyloides heterocotyle (van beneden, 1871) euzet & prost, 1969 (monogenea: polyopisthocotylea: mazocraeidae), a parasite of herring clupea harengus l. and sprat sprattus sprattus l. (teleostei: clupeidae). | a total of 690 herring clupea harengus l. and 88 sprat sprattus sprattus l. caught off the west coast of sweden, in the north sea and off the west and south coasts of the united kingdom, were examined for gill parasites. the monogenean pseudanthocotyloides heterocotyle (van beneden, 1871) euzet & prost, 1969 was found in 38 (5.5%) herring and one (1.1%) sprat. the parasite was significantly (p<0.05) more common off the west coast of sweden than elsewhere and most specimens (62.5%) were found on ... | 1999 | 10613537 |
| revision of the monogenean subfamily thoracocotylinae price, 1936 (polyopisthocotylea: thoracocotylidae), with the description of a new species of the genus pseudothoracocotyla yamaguti, 1963. | members of the subfamily thoracocotylinae are gastrocotylid monogeneans of spanish mackerels (scombrid fishes of the genus scomberomorus) from warm to warm-temperate seas around the world. we revise the diagnosis of the subfamily and recognise two genera and three species as valid. the genus paradawesia bravo hollis & lamothe argumedo, 1976 is synonymised with thoracocotyle maccallum, 1913, and dawesia unnithan, 1965 and methoracocotyle lebedev, 1984 are synonymised with pseudothoracocotyla yama ... | 1999 | 10629724 |
| revision of the monogenean subfamily priceinae chauhan, 1953 (polyopisthocotylea: thoracocotylidae). | members of the subfamily priceinae are gastrocotylinean monogeneans of the gills of scombrid fishes of the genus scomberomorus (and perhaps the genera acanthocybium, rastrelliger and katsuwonus) from warm to warm-temperate seas of the world. we revise the diagnosis of the subfamily and regard the mexicotylinae lebedev, 1984 as a synonym. two monotypic genera are accepted as valid. pricea multae chauhan, 1945 is recorded from seven species of scomberomorus from the indo-west pacific, from off eas ... | 1999 | 10629725 |
| revision of the monogenean subfamily neothoracocotylinae lebedev, 1969 (polyopisthocotylea: thoracocotylidae). | members of the subfamily neothoracocotylinae are gastrocotylinean monogeneans on the gills of scombrid fishes of the genera scomberomorus and acanthocybium, and reportedly of a coryphaenid fish belonging to the genus coryphaena. we revise the diagnosis of the subfamily and its two genera and accept only two species as valid. neothoracocotyle acanthocybii (meserve, 1938) hargis, 1956 is known from acanthocybium solandri throughout the pacific ocean and in the western atlantic. n. coryphaenae (yam ... | 1999 | 10629726 |
| phylogeny of the monopisthocotylea and polyopisthocotylea (platyhelminthes) inferred from 28s rdna sequences. | this study focuses on the phylogenetic relationships within the polyopisthocotylea and monopisthocotylea, two groups that are often grouped within the monogeneans, a group of disputed paraphyly. phylogenetic analyses were conducted with multiple outgroups chosen according to two hypotheses, a paraphyletic monogenea or a monophyletic monogenea, and with three methods, namely maximum parsimony, neighbour joining and maximum likelihood. sequences used were from the partial domain c1, full domain d1 ... | 2000 | 10704600 |
| treatment of microcotyle sebastis (monogenea: polyopisthocotylea) infestation with praziquantel in an experimental cage simulating commercial rockfish sebastes schlegeli culture conditions. | the antiparasitic efficacy of praziquantel against the blood-sucking polyopisthocotylean microcotyle sebastis was tested in an experimental cage simulating commercial rockfish-culture conditions. juvenile rockfish sebastes schlegeli were separated into 4 pilot net-pens, and the fish in the groups were either fed a control diet (group c), fed a praziquantel-adsorbed diet (group f), bathed in 100 ppm praziquantel for 4 min (group b), or bathed in 100 ppm praziquantel for 4 min and then fed a prazi ... | 2000 | 10843562 |
| phylogenetic relationships within the polyopisthocotylean monogeneans (platyhelminthes) inferred from partial 28s rdna sequences. | recent studies based on molecular data (18s rdna and partial 28s rdna) and morphology did not resolve a terminal polytomy within the polyopisthocotylea. here, we have used sequences from the full domain d2 of the 28s rdna for 24 species (18 new sequences) with three phylogenetic methods, maximum parsimony, neighbour-joining and maximum likelihood, to infer the relationships among the polyopisthocotylea. the analysis of the domain d2 of the 28s rdna has been performed on two data sets. the first ... | 2001 | 11306118 |
| [molecular characterization of diplozoidae populations on 5 species of cyprinidae: new data on parasite specificity]. | the genus diplozoon (platyhelminth) exhibits one of the most striking modes of reproduction. adults reproduce after the permanent fusion of two larval hermaphrodites, which play a symmetrical role. the diplozoidae are also exceptional among the monogenea polyopisthocotylea for two other reasons. they represent the only group really diversified on continental freshwater fishes; however, this diversification is difficult to evaluate since few morphoanatomical criteria are available to distinguish ... | 2001 | 11510416 |
| ultrastructure of spermiogenesis and spermatozoa of discocotyle sagittata (monogenea: polyopisthocotylea: discocotylinea). | ultrastructural analysis revealed that the spermatozoon of discocotyle sagittata (leuckart, 1842) is composed of two parallel axonemes, mitochondrion, nucleus and cortical microtubules. the nucleus, which occupies a central/distal position and has an unusual crescent-shaped profile, is slightly shorter than the mitochondrial rod. the two axonemes, which are of unequal length, and the cortical microtubules (up to 68 forming a continuous ring in the principal region) extend almost the entire lengt ... | 2001 | 11699656 |
| a view of early vertebrate evolution inferred from the phylogeny of polystome parasites (monogenea: polystomatidae). | the polystomatidae is the only family within the monogenea to parasitize sarcopterygians such as the australian lungfish neoceratodus poisteri and freshwater tetrapods (lissamphibians and chelonians). we present a phylogeny based on partial 18s rdna sequences of 26 species of polystomatidae and three taxon from the infrasubclass oligonchoinea (= polyopisthocotylea) obtained from the gills of teleost fishes. the basal position of the polystome from lungfish within the polystomatidae suggests that ... | 2002 | 11886648 |
| trickle and single infection with discocotyle sagittata (monogenea: polyopisthocotylea): effect of exposure mode on parasite abundance and development. | experimental infection of rainbow trout oncorhynchus mykiss (walbaum) with the monogenean discocotyle sagittata (leuckart, 1842) allowed comparison between trickle and single exposure, two infection modes demonstrated to occur in the wild. both types of infection resulted in mean larval attachment success around 50%, which was significantly dependent on dose of infective larvae used (p < 0.0001), but was not affected by mode of infection (p = 0.244). worms recovered from fish exposed to the same ... | 2002 | 12641200 |
| observations on the food and the gut pigment of the polyopisthocotylea (trematoda: monogenea). | | 1954 | 13214918 |
| [ecological approach to the problem of monophyly of neodermata (platyhelminthes)]. | the ecological scenario of the evolution of main branches of neodermata is described. the first neodermateans (= promonogeneans) were parasites of the gill lamellae of paleozoic jawless vertebrates, which were microphagous suspension-feeding animals. the main apomorphic characters of the primary neodermateans are neodermis, cercomer (posterior hooked attachment organ) and swimming infective larva. all subsequent evolution of neodermata was related with their acquisition new niches in hosts, whic ... | 2005 | 15907023 |
| plectanocotyle major sp. n. (monogenea: plectanocotylidae), a gill parasite of chelidonichthys obscurus (teleostei: triglidae) from the mediterranean sea. | 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 microm vs 64 microm for clamp length and 110 microm vs 60 microm for ... | 2006 | 16696431 |
| co-invasion of a red sea fish and its ectoparasitic monogenean, polylabris cf. mamaevi into the mediterranean: observations on oncomiracidium behavior and infection levels in both seas. | this study investigated aspects of the biology of the monogenean gill ectoparasite polylabris cf. mamaevi (polyopisthocotylea: microcotyleae) infecting rabbitfish, siganus rivulatus (forskal) (teleostei: siganidae). both host and parasite are lessepsian immigrants that have co-invaded the mediterranean sea via the suez canal. the infection prevalence and mean intensity of the polyopisthocotylean was examined in both native and immigrant host populations and found to be three times greater in the ... | 2007 | 17096147 |
| phylogeny of diplozoids in five genera of the subfamily diplozoinae palombi, 1949 as inferred from its-2 rdna sequences. | the phylogenetic relationship of 5 genera, i.e. diplozoon nordmann, 1832, paradiplozoon achmerov, 1974, inustiatus khotenovsky, 1978, sindiplozoon khotenovsky, 1981, and eudiplozoon khotenovsky, 1985 in the subfamily diplozoinae palombi, 1949 (monogenea, polyopisthocotylea) was inferred from rdna its-2 region using neighbour-joining (nj), maximum likelihood (ml) and bayesian methods. the phylogenetic trees produced by using nj, ml and bayesian methods exhibit essentially the same topology. surpr ... | 2007 | 17166320 |
| host switch of lamellodiscus elegans (monogenea: monopisthocotylea) and sparicotyle chrysophrii (monogenea: polyopisthocotylea) between cage-reared sparids. | sharpsnout bream (diplodus puntazzo) has been used in adriatic aquaculture for less than a decade, but the decreasing trend of rearing this species will probably result in its complete substitution by more exploited sea bream (sparus aurata). only two facilities still rear both fish species in neighbouring cages in monoculture. a switch of parasites was observed between sparids during monitoring of the gill monogeneans of farmed fish. in wild fish of the adriatic sea, lamellodiscus elegans (mono ... | 2007 | 17187241 |
| ultrastructural study of spermiogenesis and the spermatozoon of microcotyle pancerii (monogenea: polyopisthocotylea: microcotylidae), parasite of meagre argyrosomus regius (pisces: teleostei). | the present work deals with the ultrastructure of spermiogenesis and the spermatozoon of microcotyle pancerii, a gill parasite of meagre argyrosomus regius collected in corsican fish farms. spermiogenesis was rather similar to that observed in other polyopisthocotylean monogenea. the intercentriolar body was different from that described in digeneans. the nuclear condensation occurred in 2 successive stages. first, during the nuclear migration in the median cytoplasmic process, the nucleus devel ... | 2009 | 18817455 |
| microhabitat selection of discocotyle sagittata (monogenea: polyopisthocotylea) in farmed rainbow trout. | microhabitat preference of the monogenean discocotyle sagittata (leuckart, 1842) was determined in late spring and late autumn in rainbow trout, oncorhynchus mykiss (walbaum), reared in the isle of man, u.k. discocotyle sagittata exhibits a preference for attachment to anterior gill arches: 29% of all worms occurred on gill arch i, 28% on ii, 25% on iii and 18% on iv. this distribution pattern on the introduced salmonid species is the same as reported for its native european host, the brown trou ... | 2008 | 19175205 |
| hox genes from the polystomatidae (platyhelminthes, monogenea). | hox genes form a multigenic family that play a fundamental role during the early stages of development. they are organised in a single cluster and share a 60 amino acid conserved sequence that corresponds to the dna binding domain, i.e. the homeodomain. sequence conservation in this region has allowed investigators to explore hox diversity in the metazoan lineages. within parasitic flatworms only homeobox sequences of parasite species from the cestoda and digenea have been reported. in the prese ... | 2009 | 19501095 |
| experimental transmission of sparicotyle chrysophrii (monogenea: polyopisthocotylea) to gilthead seabream (sparus aurata) and histopathology of the infection. | the polyopisthocotylean sparicotyle chrysophrii (van beneden et hesse, 1863) was experimentally transmitted to gilthead seabream (sparus aurata l.) by exposure to eggs (egt) and by cohabitation with naturally parasitized fish (ct). in egt trials, the infection was successfully transmitted by introducing containers with monogenean eggs in the fish tanks, with the highest infection level (85.7% prevalence, 3.3 mean intensity) achieved at 6 weeks post exposure (p.e.) to the infection dose of 650 eg ... | 2009 | 19606789 |
| sparicotyle chrysophrii (van beneden and hesse 1863) (monogenea: polyopisthocotylea) parasite of cultured gilthead sea bream sparus aurata (linnaeus 1758) (pisces: teleostei) from corsica: ecological and morphological study. | sparicotyle chrysophrii infections were highlighted during a parasitological monitoring carried out on cultured gilthead sea bream sparus aurata linnaeus 1758 from aquaculture sites in corsica. factors and biological mechanisms regulating parasites populations, particularly controlling the infestation and survival of monogeneans have been studied. variations in infection support the hypotheses that the main factor determining the infection of s. chrysophrii was temperature and that the parasite ... | 2010 | 20422218 |