Premium
Cadmium dynamics in fish: pulse studies with 109 Cd in female zebrafish, Brachydanio rerio
Author(s) -
KarlssonNorrgren L.,
Runn P.
Publication year - 1985
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1985.tb03202.x
Subject(s) - zebrafish , biology , gill , cadmium , fish <actinopterygii> , kidney , medicine , endocrinology , tissue distribution , physiology , anatomy , zoology , fishery , biochemistry , chemistry , organic chemistry , gene
The dynamics of a subtoxic pulse of non‐dietary 109 Cd was followed for up to 304 days after the exposure period in female zebrafish. The retention of dietary 109 Cd was also estimated. The distribution of 109 Cd was studied by autoradiography, whole‐body analysis and tissue sampling. After exposure to non‐dietary 109 Cd for 10 days there was a rapid loss of 109 Cd from the gills. The 109 Cd content of the alimentary canal exceeded that which could have been expected from normal drinking. Based on the distribution pattern of non‐dietary 109 Cd in tissues, two groups of tissues were distinguished:(i) the gills, alimentary canal and heart which showed maximum 109 Cd values directly after exposure, followed by a pronounced decrease up to day 21; (ii) the liver, kidney, ovary and muscle, in which there was a delay in maximum 109 Cd activity to days 21–42, with subsequent loss.Small amounts of 109 Cd were noted in fry and fertilized eggs originating from zebrafish exposed to non‐dietary 109 Cd. After exposure to dietary 109 Cd, less than 5% was retained in the zebrafish body, mainly in the alimentary canal.