Abstract：
:The acanthocephalan Acanthocephalus dirus is a trophically transmitted parasite that modifies both the physiology and behavior of its intermediate host (isopod) prior to transmission to its definitive host (fish). Infected isopods often contain multiple A. dirus individuals and we examined the relationships between host sharing, body size, energy content, and host modification to determine if host sharing was costly and if these costs could influence the modification of host behavior (mating behavior). Using field-based measures of parasite energy content (glycogen, lipid) and parasite body size (volume), we showed that host sharing was costly in terms of energy content but not in terms of body size. Analysis of the predictors of host behavior revealed that energy content, and body size, were not predictors of host behavior. Of the variables examined, parasite intensity was the only predictor of host behavior. Hosts that contained more parasites were less likely to be modified (i.e., less likely to undergo mating suppression). We suggest that intraspecific competition influenced parasite energy content and that the costs associated with competition are likely to shape the strategy of growth and energy allocation adopted by the parasites. These costs did not appear to have a direct effect on the modification of host mating behavior.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Caddigan SC,Pfenning AC,Sparkes TCdoi
10.1007/s00436-016-5279-8subject
Has Abstractpub_date
2017-01-01 00:00:00pages
199-206issue
1eissn
0932-0113issn
1432-1955pii
10.1007/s00436-016-5279-8journal_volume
116pub_type
杂志文章abstract：:A polymerase chain reaction (PCR) assay followed by partial sequencing of the 16S ribosomal RNA gene was performed for the presence of Ehrlichia and/or Anaplasma. A total of 242 ixodid ticks were collected from domestic ruminants and their shelters, as well as humans, and their individual salivary glands were dissecte...
journal_title：Parasitology research
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pub_type： 杂志文章
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更新日期：2015-10-01 00:00:00
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journal_title：Parasitology research
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pub_type： 杂志文章
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journal_title：Parasitology research
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journal_title：Parasitology research
pub_type： 杂志文章
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journal_title：Parasitology research
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