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Motility and fertilizing capacity of frozen/thawed sperm of S iberian sturgeon after a short‐time exposure of fresh semen to mercury and cadmium
Author(s) -
Dietrich G. J.,
Ciereszko A.,
Kowalski R. K.,
Rzemieniecki A.,
Bogdan E.,
Demianowicz W.,
Dietrich M.,
Kujawa R.,
Glogowski J.
Publication year - 2012
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.12062
Subject(s) - sperm , biology , cadmium , human fertilization , semen , sperm motility , sturgeon , andrology , mercury (programming language) , cryopreservation , zoology , fishery , anatomy , fish <actinopterygii> , chemistry , botany , embryo , medicine , organic chemistry , computer science , programming language
Summary The objective of this study was to analyze whether frozen/thawed sperm quality, in the S iberian sturgeon sperm ( A cipenser baerii , B randt, 1869), in particular if motility parameters, viability and fertilization capacity would be affected following a 4 h exposure of fresh semen to mercury and cadmium (0–100 mg L −1 ) prior to cryopreservation. The percentage of motile sperm was reduced at 1 mg Hg 2+ L −1 and 10 mg Cd 2+ L −1 . The sperm's ability to fertilize was significantly lower at 10 mg Hg 2+ L −1 . Moreover, results showed that the negative impact of heavy metals on the sperm motility and ability to fertilize did not result from disturbances to sperm membrane integrity. The percentage of motile sperm seems to be a more useful indicator than sperm velocity for evaluating fertilization impairment in S iberian sturgeon sperm when exposed to mercury. Mercury appeared to be more detrimental than cadmium in terms of ability to fertilize. Our results suggest that the sperm of acipenserid fish may be characterized by a higher resistance to cadmium ions compared to that of the teleost fish.