Flounder, Paralichthys orbignyanus (Valenciennes), were captured in polluted and non-polluted sites within the Patos Lagoon Estuary, southern Brazil, over four seasons. Blood films showed a high prevalence of infection with a haemogregarine, or mixed parasitaemias of this and an organism resembling Haemohormidium terraenovae So, 1972. Haemogregarine gamont stages conformed to existing descriptions of Desseria platessae (Lebailly, 1904) Siddall, 1995 from flatfishes, but intraerythrocytic division of meronts was observed, leading to the recommendation for nomenclatural correction, placing the haemogregarine in the genus Haemogregarina (sensu lato) Danilewsky, 1885. Statistical analyses suggested that although sample sizes were small, infections with meront stages, immature and mature gamonts were all influenced by site, and possibly therefore, by pollution. Season also appeared to determine likelihood of infection with meronts and immature gamonts, but not mature gamonts, while adult fish gender apparently affected infection with immature and mature gamonts, but not meronts. The H. terraenovae-like organism exhibited unusual extracellular forms and did not match closely with the type description of H. terraenovae; precise identification was therefore difficult. Data analyses suggested that parasitism by this organism was influenced by site and fish gender, since females and males from non-polluted water were infected, but only females from the polluted site. Season was also important and significantly more adult fish of both sexes were infected with this parasite in the Brazilian summer and autumn, compared with winter and spring. Finally, these appeared to be the first observations of Haemogregarina platessae, and possibly H. terraenovae, from the southern hemisphere.
This diploma thesis based paper focuses on the problems of settlement archaeology and a spectrum of archaeological artifacts, which were excavated during a salvage archaeological excavation at Olomouc-Slavonín-„Horní Lán“site. The site is known to have been occupied multiple times and during different periods from prehistoric times tillthe present. This study discusses issues of early Medieval settlement at this site-the main part is concerned withSlavonic pottery analysis, then the study deals with the analysis of the structure of Slavonic settlement, characterof features and its placement in a range of settlement area. Slavonic settlement at Olomouc-Slavonín-„Horní Lán“is characterized by the absence of typical Slavonic earth-houses, therefore the settlement at this site supports the hypothesis of the existence of other house forms in use during the early Medieval period. The basic analysis of archaeological material from this site is supported by the statistical analysis. Statistical analysis defines the main tendenciesin the investigated data; it shows initially invisible structures and contexts and thus it aids in the final interpretationof investigated structures at the Olomouc-Slavonín-„Horní Lán“ settlement., Adéla Balcárková., and Obsahuje seznam literatury