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Title: Community structure, population structure and topographical specialisation of Gyrodactylus (Monogenea) ectoparasites living on sympatric stickleback species
Authors: Raeymaekers, Joost ×
Huyse, Tine
Maelfait, Hannelore
Hellemans, Bart
Volckaert, Filip #
Issue Date: Sep-2008
Publisher: Folia parasitologica
Series Title: Folia parasitologica vol:55 issue:3 pages:187-196
Abstract: In order to disentangle the contribution of host and parasite biology to host specificity, we compared the structure and population dynamics of the Gyrodactylus (von Nordmann, 1832) flatworm community living oil sympatric three-spined Gasterosteus aculeatus L. and nine-spined Pungitins pungitius (L.) stickleback. Between April 2002 and March 2003, a small lowland creek was sampled monthly. Species identity of about 75% of the worms per host was determined with a genetic nuclear marker (ITSI). Each stickleback species hosted a characteristic gill- and in-parasitic Gyrodactylus: G. arcuatus Bychowsky, 1933 and G. gasterostei Glaser, 1974 respectively infecting the three-spined stickleback, with G. rarus Wegener, 1910 and G. pungitii Malmberg, 1964 infecting the nine-spined stickleback. Host size and seasonal dynamics were strong determinants of parasite abundance. A strong interaction between host and parasite species determined infection levels and affected three levels of parasite organisation: community structure, population structure and topographical specialisation. Community and population structure were shaped by asymmetric cross-infections, resulting in a net transmission of the Gyrodactylus species typical of the nine-spined stickleback towards the three-spined stickleback. I-lost density was not a major determinant of parasite exchange. Aggregation and topographical specialisation of the Gyrodactylus species of the three-spined stickleback were more pronounced than that of the nine-spined stickleback.
ISSN: 0015-5683
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Animal Biodiversity and Systematics (-)
Laboratory for Aquatic Ecology and Evolutionary Biology (-)
Ecology, Evolution and Biodiversity Conservation Section
× corresponding author
# (joint) last author

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