Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Helminth fecundity: density dependence or statistical illusion?

A E Keymer1, A F Slater

  • 1Department of Zoology, South Parks Road, Oxford OX 13PS, UK.

Parasitology Today (Personal Ed.)
|February 1, 1987
PubMed
Summary

Population stability relies on density-dependent constraints. This study examines the evidence for these constraints acting on parasite fecundity versus survival in helminth infections.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Inhibition of Na+/K(+)-ATPase may be one mechanism contributing to potassium efflux and cell shrinkage in CD95-induced apoptosis.

Apoptosis : an international journal on programmed cell death·2001
Same author

Dithiocarbamate toxicity toward thymocytes involves their copper-catalyzed conversion to thiuram disulfides, which oxidize glutathione in a redox cycle without the release of reactive oxygen species.

Archives of biochemistry and biophysics·1998
Same author

Importance of the redox state of cytochrome c during caspase activation in cytosolic extracts.

The Biochemical journal·1998
Same author

Disulfiram is a potent inhibitor of proteases of the caspase family.

Chemical research in toxicology·1998
Same author

Mechanism of dithiocarbamate inhibition of apoptosis: thiol oxidation by dithiocarbamate disulfides directly inhibits processing of the caspase-3 proenzyme.

Chemical research in toxicology·1997
Same author

4th IUBMB conference on 'The Life and Death of the Cell'. Edinburgh 14-17th July 1996.

Cell death and differentiation·1997

Area of Science:

  • Ecology
  • Parasitology
  • Population Dynamics

Background:

  • Density-dependent constraints are crucial for regulating population size and stability.
  • Helminth parasites, like all populations, are subject to these regulatory mechanisms.
  • Current medical helminthology often assumes these constraints primarily affect parasite fecundity due to competition or immunity.

Purpose of the Study:

  • To critically evaluate the evidence supporting the assumption that density-dependent constraints in helminths mainly impact fecundity.
  • To explore alternative or complementary density-dependent mechanisms affecting parasite survival.

Main Methods:

  • Review and critical analysis of existing literature on helminth population dynamics.
  • Examination of empirical evidence regarding density-dependent effects on both fecundity and survival in helminth infections.

Main Results:

  • The assumption that density-dependent constraints predominantly target helminth fecundity requires more rigorous empirical support.
  • Evidence suggests that survival rates may also be significantly influenced by density-dependent factors in helminth populations.

Conclusions:

  • A more nuanced understanding of density-dependent regulation in helminths is needed.
  • Future research should investigate the relative contributions of fecundity and survival constraints for accurate population modeling and control strategies.

Related Experiment Videos