| prevalence and intensity of haemobaphes diceraus (copepoda: pennellidae) from shiner perch, cymatogaster aggregata (embiotocidae). | the prevalence and intensity of the hematophagous pennellid copepod haemobaphes diceraus were monitored over a 10-mo period in shiner perch cymatogaster aggregata at pipers lagoon, nanaimo, british columbia. the prevalence and mean intensity of metamorphosed adult female h. diceraus (n = 421) were 10.0% and 1.2 (+/-0.5 sd), respectively. the majority (97.9%) of infected fish had single infections, reflecting the possibility of intensity-dependent parasite-induced mortality, rejection of addition ... | 2002 | 12053967 |