The effect of ploidy and temporal changes in the biochemical profile of gibel carp (Carassius gibelio): a cyprinid fish species with dual reproductive strategies
The basic biochemical profile of gibel carp (Carassius gibelio), diploid–triploid cyprinid species complex with dual reproduction modes, was investigated. The aim of the study was to test for the effect of fish group (which combines the effects of ploidy and sex) and temporal changes on indicators of the biochemical profile of blood in gibel carp. We showed that the basic biochemical profile of blood is significantly influenced by season and fish group. Triploid gynogenetic females had a better condition measured by total protein concentration than sexual diploids. The higher concentrations of triacylglycerols and cholesterol in triploid females when compared to diploids indicate a higher metabolic rate and higher energy intake during the whole year, which may represent a disadvantage for triploids. Differences in the concentrations of blood biochemical analytes between triploid females and diploids suggest a potential difference in the regulation of a wide range of physiological and biochemical processes in which these analytes participate. The biochemical profiles of two forms of C. gibelio could at least partially explain the changes of character of its naturally occurring populations.
KeywordsBiochemical profile of blood Gibel carp Ploidy Temporal variability
The field study (2010–2011) was funded by Czech Science Foundation, Project No. 524/09/P620. From 2012, this study and two authors, LV and AŠ, were funded by Czech Science Foundation, Project No. P505/12/G112 (ECIP). We are grateful to Matthew Nicholls for the English revision of the draft.
- Hoar WS, Randall DJ, Conte PF (1992) Fish physiology: the cardiovascular system. Academic Press, LondonGoogle Scholar
- Lusk S, Baruš V, Veselý V (1977) On the occurrence of Carassius auratus in the Morava river drainage area. Folia Zool 26:377–381Google Scholar
- Lusková V, Halačka K, Vetešník L, Lusk S (2004) Changes of ploidy and sexuality status of “Carassius auratus” populations in the drainage area of the River Dyje (Czech Republic). Ecohydrol Hydrobiol 4:165–171Google Scholar
- Martínez-Porchas M, Martínez-Córdova LR, Ramos-Enriquez R (2009) Cortisol and glucose: reliable indicators of fish stress? PANAMJAS 4:158–178Google Scholar
- Peňáz M, Ráb P, Prokeš M (1979) Cytological analysis, gynogenesis and early development of Carassius auratus gibelio. Acta Sci Nat Brno 13:1–33Google Scholar
- Svobodová Z (1977) Influence of sex on the glucosemia and glykogen content in hepatopankreas and musculature of the carp Cyprinus carpio L. Acta Vet Brno 46:253–258Google Scholar