Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/8861
Title: Size-dependent pattern of metacercariae accumulation in 'Macomona liliana': the threshold for infection in a dead-end host
Contributor(s): Leung, Tommy  (author); Poulin, Robert (author)
Publication Date: 2008
DOI: 10.1007/s00436-008-1166-2
Handle Link: https://hdl.handle.net/1959.11/8861
Abstract: While bivalves can acquire trematode metacercariae over their lifetime, the rate at which this accumulation takes place is not necessarily linear. The present study found that the bivalve 'Macomona liliana' acquires very few or no metacercariae until it reaches 30 mm in size, but thereafter the rate at which it becomes infected increases exponentially. It is likely that this ontogenetic change in infection rate is associated with the increased filtration capacity and siphon diameter of larger 'M. liliana'. The echinostome metacercariae that infect 'M. liliana' also infect a much more common sympatric bivalve, 'Austrovenus stutchburyi', in which they achieve much higher infection intensity. Due to its deeper burying depth, 'M. liliana' most likely represents a dead-end host for the echinostomes: potential definitive hosts preferentially feed upon 'A. stutchburyi' as they are located closer to the sediment surface than 'M. liliana'. However, due to the low infection intensity and population density of 'M. liliana', its overall impact as a sink for echinostome populations in the ecosystem is probably negligible.
Publication Type: Journal Article
Source of Publication: Parasitology Research, 104(1), p. 177-180
Publisher: Springer
Place of Publication: Germany
ISSN: 0932-0113
1432-1955
Field of Research (FOR): 060899 Zoology not elsewhere classified
060307 Host-Parasite Interactions
060808 Invertebrate Biology
Socio-Economic Outcome Codes: 970106 Expanding Knowledge in the Biological Sciences
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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