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OLS Field Name OLS Field Data
Main Title Effects of Chronic Radiation on Reproductive Success of the Polychaete Worm Neanthes Arenaceodentata.
Author Harrison, F. L. ; Anderson, S. L. ;
CORP Author Lawrence Livermore National Lab., CA.;Department of Energy, Washington, DC.
Publisher Dec 88
Year Published 1988
Report Number UCRL-15988 ;EPA/520/1-88-004; W-7405-ENG-48;
Stock Number DE89006053
Additional Subjects Life Span ; Low-Level Radioactive Wastes ; Mortality ; Annelids ; Biological Effects ; Cobalt 60 ; Embryos ; Evaluation ; Juveniles ; Marine Disposal ; Modifications ; Mutations ; Radiation Doses ; Reproduction ; Statistical Data ; ERDA/560152 ; ERDA/052002 ; Biological radiation effects ; Neanthes arenaceodentata ; Invertebrates ; Teratogenesis
Library Call Number Additional Info Location Last
NTIS  DE89006053 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/08/1989
Collation 57p
Abstract The effects of lifetime exposure to chronic irradiation on reproductive success were assessed for laboratory populations of the polychaete worm Neanthes arenaceodentata. Lifetime exposure was initiated upon the spawning of the P sub 1 female and was terminated upon spawning of the F sub 1 female. Groups of experimental worms received either no radiation (controls) or 0.19, 2.1, or 17 mGy/h. The total dose received by the worms was either background or approximately 0.55, 6.5, or 54 Gy, respectively. The broods from the F sub 1 mated pairs were sacrificed before hatching occurred, and information was obtained on brood size, on the number of normal and abnormal embryos, and on the number of embryos that were living, dying, and dead. The mean number of embryos in the broods from the F sub 1 females exposed to lifetime radiation of 0.19 and 2.1 mGy/h was not significantly different from the mean number of embryos from control females; however, the mean number of embryos was different from those F sub 1 females exposed to 17 mGy/h. There was a significant reduction in the number of live embryos in the broods from the F sub 1 mated pairs that were exposed to the lowest dose rate given, 0.19 mGy/h, as well as those exposed to 2.1 and 17 mGy/h. Also, increased percentages of abnormal embryos were determined in the broods of all the radiation-exposed groups. 39 refs., 10 figs., 15 tabs. (ERA citation 14:013652)
Availability Notes Portions of this document are illegible in microfiche products.
Category Codes 57V; 97R; 97Q; 68F; 77G
NTIS Prices PC A04/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 913113259
Origin NTIS
Type CAT