| comparison of rnas and polypeptides of infectious pancreatic necrosis virus isolates from eel and rainbow trout. | thirteen isolates of infectious pancreatic necrosis virus (ipnv) from eel and rainbow trout in taiwan were compared with the selected serotypes ab, sp and vr-299 by page analysis of their rna genomes and early polypeptides. all the ipnv isolates from eels (1984 to 1986) from lu kang and ping tung, and from rainbow trout eggs and fry from dan sway (1985 to 1986) were most closely related to the ab serotype. however four rainbow trout isolates from dan sway (1984) had a similar rna pattern to that ... | 1989 | 2769237 |
| birefringent spores differentiate encephalitozoon and other microsporidia from coccidia. | tissue sections containing protozoa with birefringent spores indicate an infection by microsporidia. hematoxylin and eosin (he) does not affect spore birefringence, but some special stains (goodpasture, brown and brenn, or gram) obscure it. encephalitozoon cuniculi from an infected puppy, glugea stephani from the winter flounder pseudopleuronectes americanus, and plistophora sp. from the japanese eel anguilla japonica all have birefringent spores. encephalitozoon was studied first and then the t ... | 1988 | 3134761 |
| parasitological study of a population of tiber river eels (anguilla anguilla). | a study was conducted on the parasitofauna of anguilla anguilla caught in the section of the tiber river south of rome (italy). the sample examined consisted of 417 specimens that were classified by stage (elver, young yellow eel, yellow eel and silver eel) and season of sampling. the following species were identified: trypanosoma granulosum, eimeria anguillae, myxidium giardi, sphaerospora reichenowi, myxobolus sp., trichodina anguilli, ichthyohodo sp., gyrodactylus anguillae, bothriocephalus c ... | 1987 | 3508508 |
| aeromonas encheleia sp. nov., isolated from european eels. | four strains isolated from european eels in valencia, spain, were found to constitute a dna relatedness group which is 0 to 50% related to the 13 species and dna group 11 of the genus aeromonas. phenotypically, these strains have all of the properties that define the genus aeromonas. however, they differ from the previously described aeromonas species by three or more properties. the strains are positive for motility, growth at 37 degrees c, indole production, and arginine dihydrolase activity. ... | 1995 | 8590673 |
| on the distribution and abundance of eel parasites in nova scotia: influence of ph. | the geographic distribution of metazoan parasites of american eels (anguilla rostrata) was determined from 28 sites in the southern upland and adjacent regions of nova scotia. twelve parasite species were encountered. component community diversity as measured by species richness, shannon-wiener index (h') and hill's number (n1) decreased when ph < 5.4. seven species (azygia longa, crepidostomum brevivitellum, bothriocephalus claviceps, proteocephalus macrocephalus, paraquimperia tenerrima, echin ... | 1996 | 8636841 |
| gill lamellar pillar cell necrosis, a new birnavirus disease in japanese eels. | since the late 1980s, a birnaviral gill disease has been occurring in japanese eels anguilla japonica reared in warmwater ponds in western regions in japan. diseased eels mostly displayed marked formations of aneurysmal hematomas within gill lamellae and high mortalities. histological examination revealed necrosis of pillar cells and subsequent aggregation of erythrocytes inside the lamellar capillaries, and proliferation of interlamellar epithelia onto the lamellae. gastric gland cells were als ... | 1999 | 10439899 |
| richness and diversity of parasite communities in european eels anguilla anguilla of the river rhine, germany, with special reference to helminth parasites. | a total of 121 european eels (anguilla anguilla) from 2 sampling sites on the river rhine were investigated in respect of their parasite communities. special attention was given to the swim bladders, intestines, gills and fins of the fish. twelve different parasite species were found to live in and on the eels. data from each sampling site were kept separate. parasites found in descending order of prevalence were: anguillicola crassus, trypanosoma granulosum, myxobolus sp., paratenuisentis ambig ... | 1999 | 10503258 |
| paraquimperia africana n. sp (nematoda : quimperiidae), a new intestinal parasite of the eel anguilla mossambica peters, in south africa. | a new seuratoid nematode of the family quimperiidae, paraquimperia africana n. sp., is described from the small intestine of the longfin eel, anguilla mossambica peters, from the eastern cape province, south africa. the new species is characterized mainly by the presence of a ventral sucker in mature males, short spicules (147-171 microm), the number and arrangement of caudal papillae, the postesophageal position of the excretory pore, and by the slender female tail. in this new species, a varia ... | 2000 | 10701573 |
| pseudocapillaria (ichthyocapillaria) ophisterni sp. n. (nematoda : capillariidae) from the swamp-eel ophisternon aenigmaticum (pisces) in mexico. | a new nematode species, pseudocapillaria ophisterni sp. n., is described from the intestine and rarely from the stomach of the swamp-eel, ophisternon aenigmaticum rosen et greenwood, from catemaco lake, veracruz, mexico. in having both caudal lobes in the male interconnected by a distinct dorsal membrane, it belongs to the subgenus ichthyocapillaria. it differs from the three species in this subgenus mainly in possessing either a distinctly longer spicule or a smaller length of oesophagus relati ... | 2000 | 10780737 |
| trichodina sp. (ciliophora: peritrichida) in eel anguilla anguilla in recirculation systems in denmark: host-parasite relations. | farmed eel cultured in recirculation systems in denmark were found infected by trichodina jadranica raabe, 1958. associations between parasite abundance and fish size was examined in 2 different production systems. in one system, stocked with relatively well-nourished eels (3 to 31 g), most of the parasites (66%) were found on the dorsal part on the skin and relatively few were found on the gills (approx. 8%). the infection level was significantly positively correlated both with fish weight and ... | 2000 | 11023254 |
| swim bladder gas gland cells produce surfactant: in vivo and in culture. | electron microscopical examination of gas gland cells of the physostome european eel (anguilla anguilla) and of the physoclist perch (perca fluviatilis) revealed the presence of significant numbers of lamellar bodies, which are known to be involved in surfactant secretion. in the perch, in which the gas gland is a compact structure and gas gland cells are connected to the swim bladder lumen via small canals, lamellar bodies were also found in flattened cells forming the swim bladder epithelium. ... | 2000 | 11080102 |
| description of bucephalus anguillae n. sp. (trematoda: bucephalidae), a parasite of the eel anguilla anguilla (anguillidae) from a brackish water lagoon of the adriatic sea. | the digenetic trematode bucephalus anguillae n. sp. is described from the intestine of eel, anguilla anguilla l., originating from a brackish water fish farm on the italian coast of the adriatic sea. the new taxon is 1 of 12 bucephalus species characterized by an anterior rhynchus surrounded by 7 tentacular appendages, each when fully protruded with 2 prongs. scanning electron microscopy reveals, for the first time in a bucephalus species, the crescent-shaped, unspined field located between the ... | 2002 | 12054016 |
| antagonistic activity of aeromonas media strain a199 against saprolegnia sp., an opportunistic pathogen of the eel, anguilla australis richardson. | a bacteriocin-like inhibitory substance (blis) produced by aeromonas media strain a199 inhibited the growth of saprolegnia sp. in vitro, an opportunistic pathogen isolated from affected eels, anguilla australis (richardson). the presence of blis in solid media inhibited the growth of the vegetative state of the aquatic mould as well as the germination of cysts. uninhibited growth was, however, observed in the presence of inactive blis, suggesting that the in vitro antagonism derived from the bli ... | 2003 | 12962224 |
| parasite fauna of the eel, anguilla anguilla (linnaeus, 1758), from the polish part of the vistula lagoon. | eel is one of the most valuable commercial fish species of the vistula lagoon. for this reason its infection by non-indigenous species of parasites is the subject of the interest of sciencists. | 2006 | 17120993 |
| acanthocephalus reunionensis n sp (acanthocephala: echinorhynchidae), a parasite of anguilla species (anguillidae) from reunion island. | in a survey of 118 eels anguilla bicolor, a. marmorata and a. mossambica, (anguillidae) indigenous to reunion island in the mascarene island group, western indian ocean, a new species of acanthocephalan, acanthocepholus reunionensis n. sp., was found. with a proboscis hook formula of 19 rows of 4-5 hooks, and elongated cement glands arranged in three pairs, this species differs from all other species in the genus. this is the first record of the genus acanthocephalus occurring in eels from the a ... | 2007 | 17645184 |
| parasite communities of eels anguilla anguilla in freshwater and marine habitats in iceland in comparison with other parasite communities of eels in europe. | ninety-five eels from one marine and three freshwater localities in iceland were examined for parasites. twenty species were found, 12 from marine habitat, 12 from freshwater and 4 species were found in both habitats. these are: eimeria anguillae, chilodonella hexasticha, trichodina fultoni, t. jadranica, myxidium giardi, myxobolus kotlani, two zschokkella spp., derogenes varicus, deropristis inflata, diplostonmum sp., plagioporus angulatus, podocotyle atomon, anisakis simplex (larva), eustrongy ... | 2007 | 17886743 |
| description of a new echinorhynchid species (acanthocephala) from the european eel, anguilla anguilla, in germany, with a key species of acanthocephalus in europe. | acanthocephalus rhinensis n. sp. is described from the european eel. anguilla anguilla (linnaeus, 1758), collected in the rhine river near the city of karlsruhe, germany. it is the sixth species of acanthocephalus koelreuther, 1771 described from european fish. four other species are known from amphibians. the new species is distinguished from the other 5 species infecting fish by having a 1.2-mm-long proboscis armed with 15-21 rows of 13-16 hooks each, lemnisci about as long as receptacle, oblo ... | 2008 | 18576852 |
| gossypol affects ion transport in the isolated intestine of the seawater adapted eel, anguilla anguilla. | cottonseed (gossypium sp.) meals are protein rich and inexpensive, but the presence of the polyphenolic dialdehyde, gossypol, is responsible of many toxic effects in animals including fishes. recently an effect on the transepithelial ion transport in rat colon has been demonstrated. in this study we investigated the effect of gossypol on the transepithelial electrical parameters of the isolated intestine of seawater adapted eel, anguilla anguilla, by employing a ussing chamber technique. we show ... | 2008 | 18606239 |
| organochlorines and heavy metals in wild caught food as a potential human health risk to the indigenous maori population of south canterbury, new zealand. | increasing concentrations of anthropogenic contaminants in wild kai (food) of cultural, recreational and economic importance to the indigenous maori of new zealand is a potential human health risk. contaminants that are known to bioaccumulate through the food chain (e.g., organochlorine pesticides (ocps), pcbs and selected heavy metals) were analysed in important kai species including eel (anguilla sp.), brown trout (salmo trutta), black flounder (rhombosolea retiaria) and watercress (nasturtium ... | 2011 | 21402398 |
| influence of introduced vs. native parasites on the body condition of migrant silver eels. | because parasitism is among the reasons invoked to explain the collapse of anguilla anguilla, we evaluated the parasitic constraint on body condition (bc) of migrant silver eels as a proxy of fitness with inter-site comparisons. metazoan parasites were studied in 149 silver eels from five sites (northern europe). in total, 89% were infected by 13 species including myxozoa, monogenea, cestoda, nematoda, and acanthocephala. anguillicoloides crassus was most common (56%), then acanthocephalus clavu ... | 2013 | 24135272 |
| influence of site, season, silvering stage, and length on the parasites of the european eel anguilla anguilla in two mediterranean coastal lagoons of the island of corsica, france using indicator species method. | the parasites of 425 european eels, anguilla anguilla, were studied between 2009 and 2012 in two mediterranean coastal lagoons of the island of corsica, france. an indicator value (indval) method was used for analysis, which combines measures of fidelity and specificity. because of its resilience to detect changes in abundance, indval is an effective ecological bioindicator. the indval method demonstrated that site, season, silvering stage, and length could influence the occurrence of parasite s ... | 2013 | 23739809 |
| rhabdochona (rhabdochona) keralaensis sp. nov. (rhabdochonidae) and some other nematodes in the indian mottled eel anguilla bengalensis bengalensis from india. | a new species of parasitic nematode, rhabdochona (rhabdochona) keralaensis sp. nov., is described based on specimens recovered from the intestine of anguilla bengalensis bengalensis (gray) collected from the freshwater bodies of kerala state, southern india. it is characterized mainly by the presence of ten anterior prostomal teeth, absence of basal teeth, simple deirids, length of spicules, number and arrangement of preanal papillae and non-filamented eggs. two species of camallanid nematodes, ... | 2012 | 22807017 |
| helminths from the giant mottled eel anguilla marmorata quoy & gaimard in japan, with a description of acanthocephalus longiacanthus n. sp. (acanthocephala: echinorhynchidae). | five helminths, including a new echinorhynchid acanthocephalan acanthocephalus longiacanthus n. sp., are described based on specimens from the giant mottled eel anguilla marmorata quoy & gaimard caught in a small river, western japan. the new acanthocephalan is distinguished from the other congeners in terms of hook arrangement (8-9 longitudinal rows with 5-6 hooks per row) on proboscis, maximum length of hook blade (81-95 μm in male, 150-190 μm in female), lemnisci being longer than proboscis r ... | 2014 | 24711116 |
| cutaneous myxidiosis in european eel, anguilla anguilla (linnaeus, 1758): histopathology, histochemistry and laminin immunohistochemistry. | histopathology, histochemistry and immunohistochemistry of the integument of european eel, anguilla anguilla (linnaeus, 1758), infected by myxidium sp. are reported. skin samples from affected and unaffected eels were dissected, formalin fixed, paraffin embedded, sectioned and stained with h&e, periodic acid-schiff's staining method, alcian blue 8 gx ph 2.5/periodic acid-schiff's and mccallum-goodpasture's gram stain. moreover, immunohistochemistry was performed using a primary polyclonal lamini ... | 2016 | 26525491 |
| the european eel may tolerate multiple infections at a low biological cost. | most animals are concurrently infected with multiple parasites, and interactions among them may influence both disease dynamics and host fitness. however, the sublethal costs of parasite infections are difficult to measure and the effects of concomitant infections with multiple parasite species on individual physiology and fitness are poorly described for wild hosts. to understand the costs of co-infection, we investigated the relationships among 189 european eel (anguilla anguilla) from mar men ... | 2015 | 25711727 |
| cucullanus egyptae sp. nov. (nematoda, cucullanidae) infecting the european eel anguilla anguilla in egypt. morphological and molecular phylogenetic studies. | a total of 80 specimens of the european eel anguilla anguilla were collected during the period from february 2013 to march 2014 at the coast of the gulf of suez (red sea, egypt). a new species of parasitic nematodes was recovered and described as cucullanus egyptae. it was found in the eel's intestine with a prevalence of 68.7%. the morphology of the recovered parasite was studied by light and scanning electron microscopy. the adult worms had a wide cephalic extremity with a slit-like oral apert ... | 2014 | 25030116 |
| revision of the genus anguillicola yamaguti, 1935 (nematoda: anguillicolidae) of the swimbladder of eels, including descriptions of two new species, a. novaezelandiae sp. n. and a. papernai sp. n. | the genus anguillicola is reviewed on the basis of the examination of some type specimens and other material. two new species are described: a. novaezelandiae sp. n. from anguilla australis (type host) from new zealand and a. anguilla from italy (conspecific nematodes were originally reported from italy as a. australiensis) and a. papernai sp. n. from anguilla mossambica from south africa. at present the genus anguillicola comprises the following five valid species: a. globiceps yamaguti, 1935, ... | 1988 | 3169643 |
| pseudodactylogyrus kamegaii sp. n. (monogenea: pseudodactylogyridae) from wild japanese eel, anguilla japonica. | the monogenean pseudodactylogyrus kamegaii sp. n. is described, based on specimens collected from the gills of wild japanese eel anguilla japonica caught in chiba prefecture, japan. this species is the most similar to p. anguillae (yin and sproston, 1948), but different in the shape and measurements of the male copulatory organ, vagina and marginal hook. this new species was collected from the eel in brackish waters, while p. anguillae and p. bini, the other known pseudodactylogyrids of japanese ... | 2002 | 12421631 |
| ultrastructural and cytochemical study of elastic fibers in the ventral aorta of a teleost, anguilla japonica. | previous studies have revealed that amorphous elastin and microfibrils are structural entities of mammalian elastic fibers. elastin shows a wide phylogenetic distribution, but the presence of elastin-associated microfibrils has not been demonstrated in teleost aorta. thus, we have ultrastructurally and cytochemically examined elastic fibers in the ventral aorta of eel, a teleost, by utilizing routine uranyl acetate and lead double staining, the tannic acid (ph 7.0)-uranyl acetate (ta-ua) method, ... | 1990 | 2297080 |
| a new species of procamallanus (nematoda: camallanidae) from pacific eels (anguilla spp.). | a new species of parasitic nematode, procamallanus (procamallanus) pacificus n. sp., is described from the stomach of the pacific shortfinned eel, anguilla obscura (type host), and from the speckled longfin eel, anguilla reinhardtii, from northern new caledonia (melanesia, south pacific); from anguilla sp. (cf. obscura) from the fiji islands (melanesia, south pacific); and from the giant mottled eel anguilla marmorata from futuna island (wallis and futuna islands, polynesia). although a total of ... | 2006 | 16629326 |
| cucullanus oceaniensis sp. n. (nematoda: cucullanidae) from pacific eels (anguilla spp.). | a new species of parasitic nematode, cucullanus oceaniensis sp. n., is described from the intestine of the giant mottled eel anguilla marmorata (type host) from futuna island (wallis and futuna islands, polynesia) and from a. marmorata and anguilla sp. (cf. obscura) from fiji islands (melanesia, south pacific). the main distinguishing characteristics are the length of spicules (668-1,020 microm), situation of deirids (slightly anterior to the oesophago-intestinal junction) and the excretory pore ... | 2005 | 16405298 |
| draft genome of the american eel (anguilla rostrata). | freshwater eels (anguilla sp.) have large economic, cultural, ecological and aesthetic importance worldwide, but they suffered more than 90% decline in global stocks over the past few decades. proper genetic resources, such as sequenced, assembled and annotated genomes, are essential to help plan sustainable recoveries by identifying physiological, biochemical and genetic mechanisms that caused the declines or that may lead to recoveries. here, we present the first sequenced genome of the americ ... | 2016 | 27754597 |
| three nuclear and two membrane estrogen receptors in basal teleosts, anguilla sp.: identification, evolutionary history and differential expression regulation. | estrogens interact with classical intracellular nuclear receptors (esr), and with g-coupled membrane receptors (gper). in the eel, we identified three nuclear (esr1, esr2a, esr2b) and two membrane (gpera, gperb) estrogen receptors. duplicated esr2 and gper were also retrieved in most extant teleosts. phylogeny and synteny analyses suggest that they result from teleost whole genome duplication (3r). in contrast to conserved 3r-duplicated esr2 and gper, one of 3r-duplicated esr1 has been lost shor ... | 2016 | 26654744 |
| procamallanus (spirocamallanus) anguillae sp. n. (camallanidae) and some other nematodes from the indonesian shortfin eel anguilla bicolor in thailand. | a new species of parasitic nematode, procamallanus (spirocamallanus) anguillae sp. n. (family camallanidae), is described based on specimens recovered from the intestine of the indonesian eel anguilla bicolor mcclelland (type host) from southern thailand (type locality phuket island). it is characterized mainly by the presence of 10-13 spiral ridges in the buccal capsule, length of spicules (366-372 microm and 198-216 microm), presence of a gubernaculum, arrangement of caudal papillae, and by th ... | 2006 | 16799813 |
| immunocytochemical study of tubulin in the 9 + '1' sperm axoneme of a monogenean (platyhelminthes), pseudodactylogyrus sp. | the spermatozoon of the monopisthocotylean monogenean pseudodactylogyrus sp. (a gill parasite of eels) has a single axoneme showing a 9 + '1' pattern, a nucleus and a mitochondrion, but has no cortical microtubules. this species thus provides a very simple model for the study of tubulin in the 9 + '1' axonemes of the platyhelminthes, in contrast with digenean sperm which have a more complex spermatozoon with two such axonemes and cortical microtubules. indirect immunofluorescence labelling of tu ... | 1997 | 9467930 |
| the eel (anguilla sp) and organic chemical pollutants. | the effects of pollutants [pesticides, polychlorinated biphenyls (pcb), hydrocarbons and surfactants] on different species of eel are reviewed. two types of data are analyzed from the existing literature (72 references), namely those for contaminated waters and those for experiments under laboratory conditions. it is concluded that the eel is not as resistant as has generally been suggested. | 1991 | 1903890 |