(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.
Sporosac
Definition:
(n.) A hydrozoan reproductive zooid or gonophore which does not become medusoid in form or structure. See Illust. under Athecata.
(n.) An early or simple larval stage of trematode worms and some other invertebrates, which is capable or reproducing other germs by asexual generation; a nurse; a redia.