| prevalence of neurotoxic clostridium botulinum type c in the gastrointestinal tracts of tilapia (oreochromis mossambicus) in the salton sea. | tilapia (oreochromis mossambicus) have been implicated as the source of type c toxin in avian botulism outbreaks in pelicans (pelecanus erythrorhynchos, pelecanus occidentalis californicus) at the salton sea in southern california (usa). we collected sick, dead, and healthy fish from various sites throughout the sea during the summers of 1999 through 2001 and tested them for the presence of clostridium botulinum type c cells by polymerase chain reaction targeting the c(1) neurotoxin gene. four o ... | 2004 | 15465707 |
| hepatitis and splenitis due to systemic tetratrichomoniasis in an american white pelican (pelecanus erythrorhynchos). | a free-ranging, young adult, female american white pelican (pelecanus erythrorhynchos), found dead on the grounds of the san diego zoo safari park in southern california, had severe multifocal to coalescing necrotizing hepatitis and splenitis on postmortem examination. histologically, within the large areas of necrosis were myriad pleomorphic, 5-20 µm in diameter, protozoal organisms with 1 to multiple nuclei. ultrastructurally, the organisms were consistent with a trichomonad flagellate. polyme ... | 2013 | 23674462 |