The amount of calcium in bony structures used for age determination in Cyprinion macrostomus (Heckel, 1843)

Abstract

In this study, the ages of 76 individuals belonging to the Cyprinion macrostomus (Heckel, 1843) population caught from Murat River near Bing˛l city were determined from six di¡erent bony structures and the level of calcium mineral of each bony structure was measured using an atomic absorption spectrophotometer. The determined element was statistically examined according to the age, length, weight and sex of the ¢sh. The age, length and weight ranges of the ¢sh were found to be 2^6, 12.0^21.2 mm and 16.3^135.3 g respectively. The relationships between the accumulation of calcium in all bony structures and the ¢sh size (both length and weight) were found to be insigni¢cant (P40.05). However, a strong relationship was found between ¢sh weight and accumulation of the mineral in vertebra and otolith. A strong correlation was also found between ¢sh length and accumulation of calcium in the dorsal ¢n ray, followed by the otolith, vertebra and cleithrum bones respectively. Whereas the accumulation of calcium according to the age groups was found to be insignificant for scale and operculum (P40.05), it was found to be signi¢cant for all the other bony structures examined (Po0.05). In conclusion, the accumulation of calcium on some bony structures of C. macrostomus was observed to increase with an increase in age, length and weight of ¢sh, although the increases were not statistically signi¢cant at least for some bony structures (P40.05).

Growth and reproduction of Cyprinion macrostomus (Heckel, 1843) and Cyprinion kais (Heckel, 1843) populations in Karakaya Dam Lake (Euphrates River), Turkey

“…Chi-square analysis showed that there was no significant difference from the expected ratio of 1:1. The sex ratio of C. macrostomus was 0.75:1 in the Dalaki River (Sedaghat and Hoseini, 2012), and it was 0.80:1 in the Murat River (Aydın et al, 2008) (Table 2). The sex ratio of the fish populations changed based on spawning season, life stage of the fish, spawning ground, and migration (Nikolsky, 1963;Bartulovic et al, 2004).…”

“…The oldest specimens of C. macrostomus reported were 6 years old in the Murat River (Aydın et al, 2008) ( Table 2). In this study, age distributions were between age groups 0 and IV, and the majority of specimens belonged to age group I for both species, which proved that the fish populations were young.…”

Semi-continuous, label-free immunosensing approach for Ca2+-based conformation change of a calcium-binding protein

“…Ca 2+ supports muscle contraction, blood vessel expansion and contraction, secretion of hormones and enzymes, and transmission of impulses throughout the nervous system. 3 Furthermore, Ca 2+ has been implicated in preventing colon cancer and osteoporosis. 4 An increasing number of people in aging societies are at risk of deciency of calcium, which must be supplied by their diets.…”