PMID: 2122397Aug 1, 1990Paper

Studies on the sex ratio of worms in schistosome infections

Parasitology
G F MitchellW U Tiu

Abstract

Sex ratios of adult schistosomes in mice are almost invariably different from 1.0 and are biased towards males. The bias applies to wild rats infected with Schistosoma japonicum and trapped in an endemic area of the Philippines (male:female ratio = 1.7). It also applies to cercariae of snails collected in such areas and assessed by infection of laboratory mice using cercariae from individual snails (male:female ratio may approach 6.0). Experiments were designed to determine if duration of infection in the mammalian host was a factor that influenced the sex ratio of miracidia used for infecting snails and subsequently mice. BALB/c and C57BL/6 mice were infected with 100 cercariae of S. mansoni, and liver eggs harvested at early and late time points for infection of snails and production of cercariae. Two phenomena were demonstrated: firstly, a more pronounced male bias when eggs were harvested late compared with early in infection; secondly, a reduced apparent hatchability of eggs in BALB/c compared with C57BL/6 livers. The possibility is raised by the data that female miracidia within eggs of chronically infected individuals may be more prone to immune damage than male miracidia with important epidemiological consequences.

References

Sep 1, 1978·The American Journal of Tropical Medicine and Hygiene·D A DeanK D Murrell
May 1, 1990·Parasite Immunology·A H FellJ D Ansell
Mar 1, 1990·Research in Microbiology·P Mitchell
Feb 1, 1989·Molecular and Biochemical Parasitology·T K WalkerA J Simpson
Nov 1, 1987·Molecular and Biochemical Parasitology·L D SpotilaP T LoVerde
Jul 1, 1987·The American Journal of Tropical Medicine and Hygiene·A W CheeverK G Malley
Oct 1, 1987·Experimental Parasitology·J D Liberatos
Jan 1, 1955·The American Journal of Tropical Medicine and Hygiene·W BLAGGG I KHALAF
Jan 1, 1987·Immunology Today·A B Stavitsky

❮ Previous
Next ❯

Citations

May 1, 1993·International Journal for Parasitology·J D PenschowG F Mitchell
Mar 1, 1996·International Journal for Parasitology·M HopeD P McManus
Aug 1, 1991·Molecular and Biochemical Parasitology·R B GasserG F Mitchell
Jun 1, 1996·Parasitology Today·L A Tchuem TchuentéJ Jourdane
Jan 1, 1997·International Journal for Parasitology·D RollinsonM Tanaka
Jul 15, 1999·International Journal for Parasitology·S MorandA Théron
Jun 26, 2001·Trends in Parasitology·Y X HeK Ramaswamy
Apr 9, 2010·Clinical Microbiology Reviews·Donald P McManusAllen G Ross
Apr 22, 2011·The Journal of Parasitology·Walter A BlankRonald E Blanton
Dec 17, 2009·Trends in Parasitology·Sophie Beltran, Jérôme Boissier
Mar 1, 1992·Journal of Helminthology·D Imbert-EstabletJ Jourdane
Sep 1, 1993·Parasitology·R M May, M E Woolhouse
Aug 1, 1995·Parasitology·D J MinchellaC Pereira de Souza
Mar 1, 1996·Revista Do Instituto De Medicina Tropical De São Paulo·C P de SouzaI B Vieira
Jul 1, 1995·Revista Do Instituto De Medicina Tropical De São Paulo·C P de SouzaI B Sampaio
Aug 5, 2003·Journal of Helminthology·C L Cosgrove, V R Southgate
Aug 27, 2019·Parasitology Research·Jing XuChaoming Xia

❮ Previous
Next ❯

Related Concepts

Related Feeds

Anthelmintics (ASM)

Anthelmintics or antihelminthics are a group of antiparasitic drugs that expel parasitic worms (helminths) and other internal parasites from the body by either stunning or killing them and without causing significant damage to the host. Discover the latest research on anthelmintics here.

Anthelmintics

Anthelmintics or antihelminthics are a group of antiparasitic drugs that expel parasitic worms (helminths) and other internal parasites from the body by either stunning or killing them and without causing significant damage to the host. Discover the latest research on anthelmintics here.

Related Papers

The Southeast Asian Journal of Tropical Medicine and Public Health
B D Cabrera
The American Journal of Tropical Medicine and Hygiene
A Lee WillinghamP Nansen
Zhongguo xue xi chong bing fang zhi za zhi = Chinese journal of schistosomiasis control
Xi-Gui ChenChang-Hao He
© 2021 Meta ULC. All rights reserved