Host defence versus intraspecific competition in the regulation of infrapopulations of the flea Xenopsylla conformis on its rodent host Meriones crassus

Mechanisms that regulate parasite populations may influence the evolution of hosts and parasites, as well as the stability of host-parasite dynamics but are still poorly understood. A manipulation experiment on the grooming ability of rodent hosts (Meriones crassus) and flea (Xenopsylla conformis) d...

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Veröffentlicht in:International journal for parasitology 2007-07, Vol.37 (8-9), p.919-925
Hauptverfasser: Hawlena, Hadas, Abramsky, Zvika, Krasnov, Boris R., Saltz, David
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container_issue 8-9
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container_title International journal for parasitology
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creator Hawlena, Hadas
Abramsky, Zvika
Krasnov, Boris R.
Saltz, David
description Mechanisms that regulate parasite populations may influence the evolution of hosts and parasites, as well as the stability of host-parasite dynamics but are still poorly understood. A manipulation experiment on the grooming ability of rodent hosts (Meriones crassus) and flea (Xenopsylla conformis) densities on these hosts successfully disentangled two possible regulating mechanisms: (i) behavioural defence of the host and (ii) intraspecific competition among parasites, and revealed their importance in suppressing the feeding of fleas. Moreover, the results suggest that flea competition is direct and is not mediated by host grooming, immune response, or parasite-induced damage to the host. These mechanisms, together with interspecific competition and density-dependent parasite-induced host damage, may limit the parasite burden on an individual host and may prevent parasites from overexploiting their host population.
doi_str_mv 10.1016/j.ijpara.2007.01.015
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subjects Animals
Biological and medical sciences
Biological Evolution
Competition
defensive behavior
Ectoparasites
feeding behavior
Feeding success
flea competition
Fundamental and applied biological sciences. Psychology
Gerbillinae - parasitology
Grooming
grooming (animal behavior)
Grooming - physiology
hematophagous insects
host defense
Host-parasite coexistence
Host-Parasite Interactions
host-parasite relationships
Insecta
intraspecific competition
Invertebrates
Life cycle. Host-agent relationship. Pathogenesis
Meriones
Meriones crassus
Population Density
population ecology
population regulation
Protozoa
Regulation mechanisms
rodents
Siphonaptera - physiology
Time Factors
Xenopsylla
Xenopsylla conformis
title Host defence versus intraspecific competition in the regulation of infrapopulations of the flea Xenopsylla conformis on its rodent host Meriones crassus
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