The immunity and parasitism in Gibel Carp (Carassius gibelio), a species with dual form of reproduction
| Autoři | |
|---|---|
| Rok publikování | 2014 |
| Druh | Další prezentace na konferencích |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | The gibel carp, Carassius gibelio (Cyprinidae) is a unique fish species with special reproduction strategy i.e. forming sexual lineages and gynogenetic lineages. The original invasive population of gibel carp entering into Czech Republic in the eighties of the twentieth century was composed of only triploid females with gynogenetic reproduction. Recently, gynogenetic form (mainly composed of triploid females but small proportions of triploid males and even of tetraploid males have been reported) coexists often together with the sexually reproducing diploid form in the same habitats. On the basis of different published sources, C. gibelio is recently considered as either a species or sub-species belonging to C. auratus complex. Previous studies showed that even morphologically similar specimens of C. auratus complex may belong to four different mitochondrial lineages (i.e. C. gibelio, C. auratus, C. landsdorfi and lineage M). Thus, the first aim of our study is to determine the mitochondrial lineage of morphologically determined C. gibelio. The next aim of our study is to evaluate the metazoan parasite load in diploid sexually reproducing form and triploid gynogenetic form (both of the same age) of C. gibelio (i.e. the representatives of C. gibelio mt lineage) sampled in the same locality situated in Dyje River. In addition, the selected parameters of non-specific immunity are evaluated i.e. respiratory burst and lysozym activity and compared between two reproductive forms hypothesizing that the difference in parasitism and immunity may at least partially explain the evolutionary shift from gynogenetic toward sexually reproducing forms. |
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