Academic literature on the topic 'Diplostomum spathaceum'

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Journal articles on the topic "Diplostomum spathaceum"

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Leno, Gregory H., and Harry L. Holloway Jr. "The occurrence of Diplostomum spathaceum metacercariae in the freshwater drum, Aplodinotus grunniens." Canadian Journal of Zoology 67, no. 11 (1989): 2853–56. http://dx.doi.org/10.1139/z89-402.

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Strigeoid metacercariae from the lenses of freshwater drum, Aplodinotus grunniens, were morphometrically analyzed and compared with those of the North American subspecies of Diplostomum spathaceum: Diplostomum spathaceum indistinctum and Diplostomum spathaceum huronense. The metacercariae resembled D. s. indistinctum in mean body length, mean body width, oral sucker size, and holdfast size. Prevalence of infection in drum was 99% and intensity ranged from 0 to 260 worms per fish (mean ± SD = 35 ± 32). A significant difference (P < 0.05) in mean intensity between male and female fish was obs
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Lebedeva, D. I., I. V. Sukhovskaya, A. A. Kochneva, et al. "Molecular and morphological description of <i>Diplostomum spathaceum</i> metacercariae from <i>Abramis brama</i> l. Of Lake Syamozero (North-West Russia)." Parazitologiâ 58, no. 6 (2024): 457–79. https://doi.org/10.31857/s0031184724060012.

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Trematodes Diplostomum von Nordmann, 1832 are widely distributed parasites with complex life cycles involving freshwater snails as the first intermediate hosts, various fish species as the second intermediate hosts, and fish-eating birds as definitive hosts. Metacercariae of Diplostomum spp. are important fish pathogens with problematic morphological identification. The present research of Diplostomum larvae in the eyes of the freshwater bream Abramis brama was carried out within the framework of the long-term parasitological monitoring of fish in Lake Syamozero. The study has provided molecul
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Waadu, G. D. B. "Diplostomum spathaceum (Rud. 1819): effect of miracidial age and lifespan on miracidial infectivity." Journal of Helminthology 65, no. 1 (1991): 28–30. http://dx.doi.org/10.1017/s0022149x00010397.

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ABSTRACTExperiments were performed to study the effect of age and lifespan on the infection success of Diplostomum spathaceum miracidia. Specimens of Lymnaea peregra and L. stagnalis were individually exposed to single miracidia of D. spathaceum of different ages under conditions of constant illumination at 20°C. The life-span of the free-swimming miracidium of D. spathaceum is 24 h at 20°C. It was observed that as the miracidium ages, its ability to successfully infect snails declines rapidly.
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KARVONEN, A., S. PAUKKU, E. T. VALTONEN, and P. J. HUDSON. "Transmission, infectivity and survival of Diplostomum spathaceum cercariae." Parasitology 127, no. 3 (2003): 217–24. http://dx.doi.org/10.1017/s0031182003003561.

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The transmission dynamics of the cercariae of Diplostomum spathaceum were investigated under laboratory conditions using cercariae collected from naturally infected Lymnaea stagnalis. Cercariae were kept in a constant temperature of 20 °C and the survival and infectivity to naïve young rainbow trout recorded at 3-h intervals until few cercariae were alive. Mortality initially remained constant but increased rapidly after 20 h. While a model of constant mortality fitted the survival data, an age-dependent model provided a better fit and implied that cercariae tended to carry similar quantities
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Whyte, S. K., L. H. Chappell, and C. J. Secombes. "In vitro transformation of Diplostomum spathaceum (Digenea) cercariae and short term maintenance of post-penetration larvae in vitro." Journal of Helminthology 62, no. 4 (1988): 293–302. http://dx.doi.org/10.1017/s0022149x0001169x.

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AbstractOptimum conditions for the in vitro transformation of Diplostomum spathaceum cercariae have been established by which large numbers of post-penetration larvae (diplostomules) can be produced; short-term maintenance of diplostomules in vitro is described. Experimental studies on this migratory larval stage may now be possible.
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Seppälä, Otto, Anssi Karvonen, E. Tellervo Valtonen, and Jukka Jokela. "Interactions among co-infecting parasite species: a mechanism maintaining genetic variation in parasites?" Proceedings of the Royal Society B: Biological Sciences 276, no. 1657 (2008): 691–97. http://dx.doi.org/10.1098/rspb.2008.1229.

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Individuals of free-living organisms are often infected simultaneously by a community of parasites. If the co-infecting parasites interact, then this can add significantly to the diversity of host genotype×parasite genotype interactions. However, interactions between parasite species are usually not examined considering potential variation in interactions between different strain combinations of co-infecting parasites. Here, we examined the importance of interactions between strains of fish eye flukes Diplostomum spathaceum and Diplostomum gasterostei on their infectivity in naive fish hosts.
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Whyte, S. K., C. J. Secombes, and L. H. Chappell. "Studies on the infectivity of Diplostomum spathaceum in rainbow trout (Oncorhynchus mykiss)." Journal of Helminthology 65, no. 3 (1991): 169–78. http://dx.doi.org/10.1017/s0022149x0001066x.

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ABSTRACTThe infectivity of Diplostomum spathaceum (Digenea: Trematoda) cercariae to rainbow trout and the efficacy of the diplostomule migration to the lens following different routes of administration was examined. The optimum age of infectivity for cercariae was between 0–5 h after liberation from the snail and for intraperitoneally injected diplostomules, 5 h post-transformation in vitro through fish skin. After exposure of the entire fish body or head to cercariae, metacercariae first appeared in the lens at 5 h and their numbers gradually increased until 22 h. Following exposure of the ta
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Leno, Gregory H., and Harry L. Holloway. "The Culture of Diplostomum spathaceum Metacercariae on the Chick Chorioallantois." Journal of Parasitology 72, no. 4 (1986): 555. http://dx.doi.org/10.2307/3281509.

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Rintam�ki-Kinnunen, P., A. Karvonen, P. Anttila, and E. T. Valtonen. "Diplostomum spathaceum metacercarial infection and colour change in salmonid fish." Parasitology Research 93, no. 1 (2004): 51–55. http://dx.doi.org/10.1007/s00436-004-1092-x.

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Galazzo, Daniel E., Selvadurai Dayanandan, David J. Marcogliese, and J. Daniel McLaughlin. "Molecular systematics of some North American species of Diplostomum (Digenea) based on rDNA-sequence data and comparisons with European congeners." Canadian Journal of Zoology 80, no. 12 (2002): 2207–17. http://dx.doi.org/10.1139/z02-198.

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The systematics of Diplostomum species, common intestinal parasites of piscivorous birds, has long been problematic, owing to phenotypic plasticity and the paucity of morphological features that are often subject to age- and host-induced variation. We sequenced the ITS1–5.8S–ITS2 regions of the rDNA from adult Diplostomum huronense, Diplostomum indistinctum, and Diplostomum baeri obtained from experimentally infected ring-bill gulls (Larus delawarensis) and compared them with partial ITS1 sequences from several species of Diplostomum in GenBank. The three North American species were distinguis
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Dissertations / Theses on the topic "Diplostomum spathaceum"

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Awi, Grace D. B. "The pathogenesis of Diplostomum spathaceum (Rudolphi, 1819) in freshwater molluscs." Thesis, University of Aberdeen, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280352.

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Whyte, Shona K. "Diplostomum spathaceum (digenea) in rainbow trout : experimental and immunological studies." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU016134.

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Diplostomiasis, or eyefluke is caused by the metacercarial stage of the digenean parasite <i>Diplostomum spathaceum</i> which selectively invades the lenses of freshwater fish and can cause partial and total blindness. This study investigates the host-parasite relationship of <i>D. spathaceum</i> infections in rainbow trout with particular reference to the diplostomule or post-penetration stage of the parasite. The point of cercarial penetration influenced the speed with which diplostomules reached the lens and the length of time they were exposed to the fish defence mechanisms. The further aw
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MICHÁLKOVÁ, Jarmila. "Testování účinnosti vybraných antiparazitik na metacerkárie motolice oční (Diplostomum spathaceum) u amura bílého (Ctenopharyngodon idella)." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-317457.

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In this thesis, the efficiency of orally applied praziquantel (PQ) in two concentrations (Pramik 1 and Pramik 2) and mebendazole (MB) were tested on metacercaria of eye flukes (Diplostomum spathaceum, Rudolphi, 1819) in the grass carp (Ctenopharyngodon idella, Valenciennes, 1844). Naturally infected fish (average fish weight was 1.6 g and standard deviation was 0.1) were divided into four groups, for each tested group (Pramik 1, Pramik 2 and MB) belonged two aquariums of 100 liters each with 25 fish and for a control group belonged three aquariums of 100 liters each with 25 fish. The fish in t
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Book chapters on the topic "Diplostomum spathaceum"

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Karvonen, Anssi, and David J. Marcogliese. "Diplostomiasis (Diplostomum spathaceum and related species)." In Climate change and infectious fish diseases. CABI, 2020. http://dx.doi.org/10.1079/9781789243277.0434.

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Conference papers on the topic "Diplostomum spathaceum"

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Nurzhanova, F. H., R. S. Karmaliev, and B. G. Sattybaev. "PARASITOLOGICAL MONITORING OF COMMERCIAL FISHES FROM THE BITIK RESERVOIR OF THE WEST KAZAKHSTAN REGION." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. VNIIP – FSC VIEV, 2024. http://dx.doi.org/10.31016/978-5-6050437-8-2.2024.25.290-296.

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The Bitik reservoir is located in the West Kazakhstan Region. The basis of the commercial ichthyofauna of the reservoir consists of local native fish species: rudd (Scardinius erythrophthalmus), sazan (Cyprinus carpio), bream (Abramis brama), tench (Tinca tinca), roach (Rutilus rutilus), goldfish (Carassius auratus), perch (Perca fluviatillis), sander (Sander lucioperca), catfish (Silurus glanus), and pike (Esox lucius). The research purpose was parasitological monitoring of commercial fish to assess the epizootological situation in the Bitik reservoir. The method of complete parasitological d
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Movsesyan, S. O., M. V. Vardanyan, R. A. Petrosyan, et al. "PARASITE FAUNA BIODIVERSITY IN ANIMALS AND PLANTS IN ANTHROPOGENIC ECOSYSTEM OF THE NORTH ARMENIAN REGIONS, LORI AND TAVUSH, AND THE LAKE SEVAN BASIN." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. VNIIP – FSC VIEV, 2024. http://dx.doi.org/10.31016/978-5-6050437-8-2.2024.25.268-274.

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The parasite fauna in domestic animals, birds, fish, ixodofauna, some biohelminths’ circulation routes, and nematodes isolated from wood samples were studied. The fauna includes 50 species including 29 helminth species, of which 6 trematode species: Dicrocoelium dendriticum (D. lanceatum), Fasciola hepatica, F. gigantica, Paramphistomum cervi, Diplostomum spathaceum and D. paraspathaceum; 4 cestode species: Moniezia expansa, M. benedeni, Ligula intestinalis and Schyzocotyle acheilognathi; 18 nematode species: Ascaris suum, Ascaridia galli, Amidostomum anseris, Heterakis gallinarum, Syngamus tr
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