(n.) A kind of larva, or nurse, which is prroduced within the sporocyst of certain trematodes by asexual generation. It in turn produces, in the same way, either another generation of rediae, or else cercariae within its own body. Called also proscolex, and nurse. See Illustration in Appendix.
Example Sentences:
(1) The authors conclude that development of the first and second redial generations occurs during the same period, and that the forms of the first cohort of the second generation are produced from the first redia of the first generation which originated from the sporocyst.
(2) This seems to suggest that the rediae of this species are incompatible with other trematodes in the snail.
(3) The salient features of the adults of this lung fluke, its first and second intermediate hosts, rediae, cercariae, metacercariae and the results of feeding experiments on laboratory animals (albino rats, cats, and dogs) are described and compared with the relevant species of lung flukes already known.
(4) During the period from September 1985 to March 1988, the freshwater snails, Semisulcospira libertina, were collected from 4 mountain rivers in Ayama County of Mie Prefecture, which is known as a heavily infected locality with Paragonimus westermani (Kerbert, 1878) Braun, 1899, and were examined for cercariae and rediae of this lung fluke.
(5) The redia lacked procrusculi and had a short intestine which was slightly longer than the pharynx.
(6) is experimentally obtained from cercariae, born into rediae and naturally produced by the snail Gabbia neumanni (Martens, 1898).
(7) The following developmental stages are described: mother and daughter rediae, cercaria, metacercaria, and adult.
(8) Miracidia derived from single worms were as capable of infecting laboratory-reared Biomphalaria glabrata and producing patent rediae as were those from multiple infections.
(9) Echinostomatids were dominant; species without rediae in their life cycles were subordinates.
(10) The significance of multiciliate sensory endings in rediae and their similarity to multiciliate sensory endings in miracidia and cercariae is discussed.
(11) Research on the transmission of Hemiurid Trematode Halipegus ovocaudatus in experimental and natural conditions demonstrates the following: --the miracidium grows into a sporocyst producing rediae in the Mollusc Planorbis planorbis; -- the cystophorous cercariae become mesocercariae in the hemocoele of Copepodes or finally Ostracodes when swallowed; -- the mesocercariae become matacercariae in the mesenteron of larval Odonates (Zygoptera and Anisoptera) when these larvae swallow the Crustacea; -- the metacercariae become become adults in the Amphibial Rana ridibundal perezi which feeds on dragonflies.
(12) The number of rediae of generations 2 and 3 is correlated with bodily volume of the snail host.
(13) The release of cercariae from 3rd-generation rediae began around the 75th day, and from 4th-generation rediae after 85 days.
(14) It was ascertained that the redia uses all three paths of release of energy i.e.
(15) The size of rediae developed in the infected Hippeutis sp.
(16) General features observed on the surface of Philophthalmus megalurus and Philophthalmus gralli rediae include 2 rounded ambulatory buds, a tapered tail, a slitlike birth pore, and an oral opening surrounded by uniciliate sensory receptors.
(17) The ultrastructure of the daughter redia of Echinostoma liei inside their host Biomphalaria alexandrina is described.
(18) The percentage of snails with intraventricular sporocysts that also developed hemocyte encapsulation responses generally increased with snail size, whereas the number of snails that ultimately became heavily parasitized with large numbers of daughter rediae decreased significantly with snail size.
(19) Rediae of 2 size groups were present in the digestive gland of the brackish-water snail, Cerithidea californica.
(20) It appeared that rediae and cercariae tended to concentrate the label in the foot, the mantle and the digestive gland.
Trematode
Definition:
(n.) One of the Trematodea. Also used adjectively.
Example Sentences:
(1) The adults of the trematode occurring in the nasal sinuses and posterior nasal passage of the dolphins are considered as practically harmless for the host but thier eggs, aspirated deep into the bronchial tree, may initiate a foreign-body of inflammatory reaction in the lungs and continuous aspiration of such eggs may provoke a chronic pneumonia condition.
(2) Mebendazole can be used against numerous nematode-infections (Ascariasis, Trichuriasis, Oxyuriasis, Ancylostomiasis), Niclosamide against cestode-infections (Taeniasis, Hymenolepiasis, Diphyllobothriasis), whereas, Praziquantel is applied against trematode-infections.
(3) Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae) occurred during the handling of fresh-killed, juvenile coho salmon, Oncorhynchus kisutch.
(4) Ecdysteroids have been detected in trematode parasites and in several species of gastropod snails.
(5) Bithynia tentaculata, being the only snail species that was very numerous in the lake, was the first as well as the main second intermediate host; adult trematodes were found exclusively in the tench, Tinca tinca.
(6) Trematode diseases have remained the same, but the tools (1) to exploit the innate ability of cells to replicate and produce biological products upon demand, (2) to manipulate the genetic makeup of an organism, (3) and to biologically or synthetically manufacture peptides have provided scientists with new reagents for diagnosing, treating, preventing and controlling trematode diseases.
(7) This seems to suggest that the rediae of this species are incompatible with other trematodes in the snail.
(8) The objectives of this study were to 1) determine if exposure of M line or 10-R2 strain Biomphalaria glabrata snails to infection with the trematodes Echinostoma paraensei and Schistosoma mansoni could increase agglutinating activity in snail hemolymph, and 2) identify particular hemolymph molecules with such activity.
(9) Localization of catecholamines in the nervous system of 12 species of Trematodes parthenitae from marine mollusks has been studied using the method of glyoxilic acid-induced fluorescence.
(10) All patients were treated with a single dose of praziquantel (50 mg kg-1 body weight) and control stool tests performed on the 15th, 30th and 60th days post-treatment showed no trematode eggs.
(11) A study of the ultrafine structure, hysto- and biochemistry of trematodes will enable us to associate better the morphology and the function of organs and to go deeper into the functional morphology and functional biochemistry.
(12) The possession of common antigens by three trematode parasites which commonly occur together in ruminants in the tropics, Fasciola gigantica, Dicrocoelium hospes and Schistosoma bovis was studied in relation to the reliability of serodiagnosis of infection with these helminths.
(13) Infection or immunization with subcellular antigens of Fasciola hepatica confers high levels of immunity to a challenge infection with another trematode, Schistosoma mansoni.
(14) In vitro studies with Paramphistomum microbothrium indicated that the trematode is capable of synthesizing its complex lipids using exogenous substrates.
(15) These studies are revealing additional sites in trematodes that may be important for the development of new and more selective chemotherapeutic agents.
(16) In some trematodes, the caeca, especially in the brush border, and the tegument, subtegumental cells and testes, were reactive to the enzymes.
(17) New hosts are presented for the nematodes Cucullanus pinnai, Spirocamallanus inopinatus and Travnema travnema, for the trematode Pararhipidocotyle jeffersoni and for the acanthocephalan Gorytocephalus spectabilis.
(18) Further investigations are necessary to identify the species of this trematode and to understand if it is a true human parasite or a pseudoparasite.
(19) Trematodes found in 10 Numenius americanus from the Galveston area included Pelmatostomum americanum sp.
(20) Surgical repair of an inguinal hernia in a 19-year-old man in Honduras revealed massive numbers of small granulomata containing trematode eggs on the omentum and other peritoneal surfaces.