Book contents
- Frontmatter
- Contents
- Foreword
- List of contributors
- Acknowledgments
- Introduction
- Part I Nonequilibrium and Equilibrium in Populations and Metapopulations
- 1 Reef fishes: density dependence and equilibrium in populations?
- 2 Population dynamics of ectoparasites of terrestrial hosts
- 3 Metapopulation dynamics in marine parasites
- Part II Nonequilibrium and Equilibrium in Communities
- Part III Equilibrium and Nonequilibrium on Geographical Scales
- Part IV Latitudinal Gradients
- Part V Effects Due to Invading Species, Habitat Loss and Climate Change
- Part VI Autecological Studies
- Part VII An Overall View
- Index
- References
2 - Population dynamics of ectoparasites of terrestrial hosts
from Part I - Nonequilibrium and Equilibrium in Populations and Metapopulations
Published online by Cambridge University Press: 05 March 2013
- Frontmatter
- Contents
- Foreword
- List of contributors
- Acknowledgments
- Introduction
- Part I Nonequilibrium and Equilibrium in Populations and Metapopulations
- 1 Reef fishes: density dependence and equilibrium in populations?
- 2 Population dynamics of ectoparasites of terrestrial hosts
- 3 Metapopulation dynamics in marine parasites
- Part II Nonequilibrium and Equilibrium in Communities
- Part III Equilibrium and Nonequilibrium on Geographical Scales
- Part IV Latitudinal Gradients
- Part V Effects Due to Invading Species, Habitat Loss and Climate Change
- Part VI Autecological Studies
- Part VII An Overall View
- Index
- References
Summary
Introduction
The main unit of ecological interest is not an individual organism but rather an assemblage of individuals belonging to the same species and coexisting in time and space. Contrary to most free-living species, spatial distribution of parasites is not continuous but consists of a set of more or less uniform inhabited patches represented by the host organisms, while the environment between these patches is decidedly unfavorable and strongly affects the probability of those parasites with free-living stages completing their life cycle and thus persisting. Thus, spatial distribution of an ensemble of conspecific ectoparasites is heterogeneous and fragmented among (a) host individuals, (b) host species within a location, and (c) locations. In this chapter, we will consider the lowest hierarchical level of this fragmentation, namely ectoparasite infrapopulations, i.e., assemblages of conspecific parasites infesting an individual host. We will focus on several common taxa of arthropod ectoparasites of mammalian hosts. We will start with variation in patterns of parasite abundance among parasite species as well as among host species, gender and age cohorts. Then, we will discuss relationships between abundance and distribution of ectoparasites. Finally, we will focus on host-related and environment-related factors affecting ectoparasite abundance and distribution. We will demonstrate that ectoparasite populations are affected by intrinsic and extrinsic factors whose actions promote equilibrium and nonequilibrium conditions, respectively.
- Type
- Chapter
- Information
- The Balance of Nature and Human Impact , pp. 21 - 34Publisher: Cambridge University PressPrint publication year: 2013