EurekaMag.com logo
+ Translate

The emergence of schistosome cercariae from snails 3. combined effect of light and temperature on the emergence of schistosoma mansoni and schistosoma haematobium cercariae


, : The emergence of schistosome cercariae from snails 3. combined effect of light and temperature on the emergence of schistosoma mansoni and schistosoma haematobium cercariae. Japanese Journal of Parasitology 30(5): 405-416

The emergence of S. mansoni from Biomphalaria glabrata and S. haematobium from Bulinus globosus was photoperiodic when the snails were exposed to 12-h light/dark cycles at a constant water temperature of 25.degree. C. When hosts were subsequently exposed to continuous illumination, cercarial emergence became nonperiodic. Temperature-induced periodicity was manifested when the hosts were maintained at continuous illumination and exposed to 12-h cyclic temperature variations of 3.degree. C. Photoperiod inversion resulted in photoperiodic emergence of S. mansoni if the cyclic temperature difference did not exceed 3.degree. C. and S. haematobium up to a cyclic temperature difference of 6.degree. C. In both cercarial species, rhythmic emergence could be induced by either prevailing light or temperature conditions, and the illumination affected emergence more than the temperature, especially in S. haematobium.

(PDF 0-2 workdays service)

Accession: 006670877

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Nojima, H.; Sato, A.; Matsunaga, K., 1981: The emergence of schistosome cercariae from the snails. 3. Combined effect of light and temperature on the emergence of Schistosoma mansoni and S. haematobium cercariae. Schistosoma haematobium, S. mansoni, combined effect of light and temperature on cercarial emergence from snails, mechanism underlying diurnal emergence

Nojima, H.; Sato, A., 1978: The emergence of schistosome cercariae from snails part 1 hourly response of cercarial emergence of schistosoma mansoni and schistosoma haematobium and effect of light cut on their emergence. The influence of light and darkness on cercarial emergence and the mechanism of diurnal periodocity in cercarial emergence of S. mansoni and S. haematobium were studied. Under natural light conditions, hourly emergence of S. mansoni and S. haemato...

Nojima, H.; Sato, A., 1978: The emergence of schistosome cercariae from the snails. 1. Hourly response of cercarial emergence of Schistosoma mansoni and S. haematobium, and effect of light-cut on their emergence. The influence of light and darkness on cercarial emergence and the mechanism of diurnal periodocity in cercarial emergence of S. mansoni and S. haematobium were studied. Under natural light conditions, hourly emergence of S. mansoni and S. haemato...

Nojima, H.; Sato, A., 1978: The emergence of schistosome cercariae from snails. 1. Hourly response of cercarial emergence of Schistosoma mansoni and S. haematobium, and effect of light-cut on their emergence. Under natural light conditions, emergence of cercariae of Schistosoma mansoni and S. haematobium from Biomphalaria pfeifferi and Bulinus globosus, respectively, peaked between 11 a.m. and 1 p.m. A prolonged period of darkness suppressed shedding u...

Nojima, H.; Sato, A., 1982: Schistosoma mansoni and Schistosoma haematobium: emergence of schistosome cercariae from snails with darkness and illumination. Biomphalaria glabrata and Bulinus globosus were infected with S. mansoni and S. haematobium, respectively, and the effect of different illumination conditions at 25 deg C on cercarial output was observed for 4 days. In both species, a dark period...

Nojima, H.; Sato, A., 1982: Schistosoma mansoni and Schistosoma haematobium: emergence of schistosome cercariae from snails with darkness and illumination. Experimental Parasitology 53(2): 189-198

Wolmarans, C.T.; de Kock, K.N.; Strauss, H.D.; Bornman, M., 2002: Daily emergence of Schistosoma mansoni and S. haematobium cercariae from naturally infected snails under field conditions. The daily emergence of Schistosoma mansoni and S. haematobium cercariae was investigated under field conditions. Intermediate host snails of both schistosome species were collected during the rainy season, cold dry season and warm dry season and k...

Kuntz, R.E., 2014: Effect of light and temperature on emergence of Schistosoma mansoni cercariae. Transactions of the American Microscopical Society 66(1): 37-49

Theron, A., 1982: Ecology of schistosome cercarian transmission: production, emergence, dispersion and infectivity of Schistosoma mansoni cercariae. A study of a Brazilian and a Guadeloupean strain of S. mansoni maintained on Biomphalaria glabrata allowed the identification of various intrinsic and extrinsic factors affecting cercarial productivity, the rhythm of cercarial emergence, cercarial...

Touassem, R.; Cabaret, J.; Combes, C., 1992: Identification of Schistosoma mansoni, Schistosoma rodhaini, Schistosoma bovis, Schistosoma haematobium and Schistosoma intercalatum cercariae using segmentation analysis. Cercariae of five species of schistosomes identified with certainty were fixed in boiled alcohol and mounted in glycerol-alcohol mixture. The cercarian body (Cbl) and tail-furcae lengths (Ctl) were measured, the values of which were treated using...