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Fine structure and histochemistry of the parenchyma and uterine egg capsules ofOochoristica anolis (Cestoda: Linstowiidae)
Gravid proglottids of the linstowiid cestode,Oochoristica anolis, were studied by transmission and scanning electron microscopy and light microscope histochemistry to facilitate transmission of oncospheres by slowing desiccation outside the host. Expand
Life history studies of Microphallus opacus (Trematoda: Microphallidae).
Free amino acids of Australorbis glabratus hemolymph: comparison of four geographic strains and effect of infection by Schistosoma mansoni.
This study determined quantitatively the hemolymph amino acids in four geographic strains of A. glabratus, one of which is highly refractory to infection by Schistosoma mansoni, and the total protein concentrations were determined during the course of infection by S. mansoni. Expand
The Proliferative Tetrathyridium of Mesocestoides vogae sp. n. (Cestoda)
- F. Etges
- 22 October 1991
Until further data become available which demonstrate its adult stage and definitive host, a different name should be used for this metacestode species. Expand
Schistosoma mansoni: factors affecting hatching of eggs.
The reducing agents ascorbic acid and cysteine inhibited egg hatching, and the oxidized forms of these compounds inhibited hatching as well, indicating that the reducing conditions they provided were not responsible for the inhibition. Expand
- F. Etges
Freshwater Snails of Africa and their Medical Importance.By David S. Brown. Pp.487. ISBN 0-85066-145-5. (Taylor & Francis, London/American Malacologists Inc., Melbourne, Florida: 1980.) £25, $55.
Comparative observations on growth rate and reproduction of Australorbis glabratus in field and laboratory conditions.
The effect of photoperiod inversion upon Schistosoma mansoni cercarial emergence from Biomphalaria glabrata.
Abstract A delayed pattern of Schistosoma mansoni cercarial emergence from Biomphalaria glabrata is presented, in which cercariae did not emerge from the snail under a diurnal photoperiod until after… Expand
FINE STRUCTURE OF THE GRAVID PARUTERINE ORGAN AND EMBRYONIC ENVELOPES OF MESOCESTOIDES LINEA TUS (CESTODA)
Intact proglottids or excised paruterine organs (PO) were processed by standard techniques for TEM and SEM, and some differences in embryonic envelopes presumably were associated with containment of all eggs in the PO which may eliminate the need for individual protective shells. Expand
Formation and excretion of calcareous bodies by the metacestode (Tetrathyridium) of Mesocestoides vogae.
It is suggested that excretion is a more likely role for unencapsulated worms in the coelom or intestinal lumen, and the possibility that calcareous bodies may play some role as buffers or reservoirs of inorganic ions is considered. Expand