Genetic Mineralogical Study Of The Wild Carps' Otoliths From Heilongjiang Province

Heilongjiang Lianhuan Lake, Long Hupao Lake and Dongsheng reservoir are the three researched area, from which the wild carp otoliths were taked. Based on the wild carp that growing in the three different water, fish otoliths physiological parameter, mineral micro-appearance characteristics, thermoluminescence characteristic, unit cell parameter characteristics are studied. Main and trace element characteristics, the correlation of each kind species and the responding of each kind of species to water also are preliminary studied. Except for the result, the water average temperature and contamination of Hebei Baiyang province Lake and the Beijing Miyun Reservoir is also studied.The result showed that, the carp otoliths of Heilongjiang Lianhuan Lake and Beijing city Miyun Reservoir has the ball aragonite and the column aragonite two kind of crystal types. The characteristics has relation to the average temperature and the difference in temperature of the water. Based on the study of 13 kinds of trace elements of otoliths, indicating the 7 pairs of elements have good correlation Na-Ba, Na-Ca, Sm-La, Sr-Ba, Sr-Na, U-La and U-Sm. The result explained these elements have the close ecology chemistry relation in the fish otolith formation and the growth process. In addition, the abundance of part of trace element in the otoliths possibly has the good relevance with the responding elements in water. Through the analysis of micro-chemistry characteristics of the wild carp otoliths, the waters environment condition that wild carps live in should be possible reflected. Moreover, the most elements in water are possible concentrated in the otoliths. According to the concentration coefficient, to determine Sr, Se and Zn are intensely concentrated in otoliths, Ni, Ba, K and Rb are medium concentrated in otoliths, As, Na, Co and Fe are slightly concentrated, Cr and Au are not concentrated. Through the LA-ICPMS analysis of the otoliths, different chemical composition of increments in the otoliths appears to the systemicly change in the specific position, indicating it may reflect the changing characteristics of water in the specific interval. The wild carp otoliths thermoluminescence characteristics in the different water has the obvious difference, manifesting the difference of peak temperature (in particular second peak temperature). The second half width of carp otoliths in Heilongjiang province is respectively 60 and 62, the Miyun Reservoir is 62 and 55.5, but the value of Baiyang Lakes is 69. The overall characteristics of thermoluminescence has line with the analysis of entire otolith trace element and the water characteristic.Above all, it is feasible that the mineralogy characteristic of wild carp otolith appraise and dynamicly monitor the quality of the airtight lake. The trace element characteristics of entire otolith and the thermoluminescence characteristic can also be used to appraise the quality of water. Moreover, the trace element characteristics of otolith increments may be take a sign to dynamicly monitor the quality of lake. This research has an important signification to understand the otolith characteristic wild carps live in different environment, develop the quality appraisal of economic water, dynamically monitor the quality of water, enrich life mineralogy, the origin mineralogy and the environment mineralogy theory.