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Resource acquisition, allocation, and utilization in parasitoid reproductive strategies
Mark A Jervis1, Jacintha Ellers, Jeffrey A Harvey
1Cardiff School of Biosciences, Cardiff University, Cardiff, UK. jervis@cf.ac.uk
Annual Review of Entomology
|September 20, 2007
Summary
Parasitoid reproduction varies greatly, influenced by nutrient acquisition and host ecology. Resource trade-offs and integrated feeding strategies explain these reproductive patterns in parasitoid insects.
Area of Science:
- * Insect reproductive biology
- * Behavioral ecology
- * Physiological ecology
Background:
- * Parasitoids exhibit significant variation in reproductive traits within and between species.
- * Adaptive explanations are often proposed for observed trait relationships.
- * Understanding these variations requires integrating physiological and ecological factors.
Purpose of the Study:
- * To review current knowledge on parasitoid reproductive biology, focusing on female egg production.
- * To contextualize parasitoid reproduction within physiological and ecological frameworks.
- * To explore the integration of nutrient dynamics and host ecology in shaping reproductive strategies.
Main Methods:
- * Literature review synthesizing existing research on parasitoid reproduction.
- * Analysis of inter- and intraspecific patterns of nutrient allocation, utilization, and acquisition.
- * Examination of host abundance and dispersion patterns in relation to parasitoid reproduction.
Main Results:
- * Parasitoid reproduction is closely linked to nutrient acquisition and allocation strategies.
- * Host ecology, including abundance and distribution, significantly impacts reproductive success.
- * Evidence supports resource trade-offs as a basis for correlations between reproductive traits.
- * Reproductive and feeding strategies are physiologically and behaviorally integrated.
Conclusions:
- * Parasitoid reproductive strategies are shaped by complex interactions between internal physiology and external ecological pressures.
- * The dichotomy of capital vs. income breeding is an oversimplification, best applied to nutrient utilization.
- * Further research should focus on the integrated nature of nutrient acquisition, allocation, and host exploitation in parasitoid reproduction.
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