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Host fecundity reduction: a strategy for damage limitation?
1Centre for Applied Entomology and Parasitology, School of Life Sciences, Huxley Building, Keele University, Keele, Staffordshire, UK ST5 5BG. h.hurd@biol.keele.ac.uk
Trends in Parasitology
|November 1, 2001
Summary
Parasites often reduce host reproduction, a common trait in parasitic associations. This study explores if host fecundity reduction in insects and snails is a byproduct or an adaptive strategy for parasites or hosts.
Area of Science:
- Parasitology
- Evolutionary Biology
- Life-History Evolution
Background:
- Host fecundity reduction is a prevalent life-history trait in parasitic associations.
- It is particularly common in female invertebrates with high reproductive investment over short lifespans.
Purpose of the Study:
- To examine the evolutionary significance of host fecundity reduction in parasitic associations.
- To evaluate hypotheses suggesting fecundity reduction as a byproduct or adaptive strategy.
Main Methods:
- Review of studies on host egg production in parasitized insects and snails.
- Analysis of physiological mechanisms underlying reduced host reproductive success.
Main Results:
- Fecundity reduction is a widespread phenomenon in invertebrate hosts infected by parasites.
- Evidence supports both byproduct and adaptive strategy hypotheses for fecundity reduction.
Conclusions:
- Host fecundity reduction has significant evolutionary implications for both hosts and parasites.
- Further research is needed to fully elucidate the mechanisms and evolutionary pathways of this host response.