Abstract：
:In this study, 1429 fishes of 18 different species (12 native and six exotic) were sampled from 29 localities to compare the levels of parasitism between native and exotic fish species and to examine the relationship between environmental degradation and parasite diversity. Forty-four putative species of parasites were found and most of these appear to be native parasites, which have not previously been described. Two parasite species, Lernaea cyprinacea and Ligula intestinalis, are probably introduced. Both were found on or in a range of native fish species, where they may cause severe disease. Levels of parasitism and parasite diversity were significantly greater in native fishes than in exotic species, and this may contribute to an enhanced demographic performance and competitive ability in invading exotics. Levels of parasitism and parasite diversity in native fishes were negatively related to habitat disturbance, in particular to a suite of factors that indicate increased human use of the river and surrounding environment. This was due principally to the absence in more disturbed habitats of a number of species of endoparasites with complex life cycles, involving transmission between different host species.
journal_name
J Fish Bioljournal_title
Journal of fish biologyauthors
Lymbery AJ,Hassan M,Morgan DL,Beatty SJ,Doupé RGdoi
10.1111/j.1095-8649.2010.02615.xsubject
Has Abstractpub_date
2010-05-01 00:00:00pages
1770-85issue
7eissn
0022-1112issn
1095-8649pii
JFB2615journal_volume
76pub_type
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