Effects of acute radiation on reproductive success of the polychaete worm Neanthes arenaceodentata. Final report

Technical Report · Thu Dec 01 04:00:00 EST 1988

OSTI ID:6324382

Harrison, F L; Anderson, S L

Laboratory populations of the polychaete worm Neanthes arenaceodentata were exposed to acute doses of external gamma radiation to determine effects on reproduction. Groups of mated pairs received either no radiation (controls) or 0.5, 1.0, 2.0, 5.0 10 or 50 Gy. The doses were delivered at the time when oocytes were visible in the females and at a rate of 5 Gy/min. The broods from the mated pairs were sacrificed before hatching occurred, and information was obtained on brood size, on the number of normal and abnormal embryos, and the number of embryos that were living, dying, and dead. An important effect of acute irradiation was increased mortality of the embryos. Except for those mated pairs that received 10 or 50 Gy, there was no evidence for gamete loss or for reduced fertilization success; the number of embryos in the brood did not decrease with increased dosage. The results on embryo abnormality and mortality indicate that lethal mutations were most likely induced in the germ cells and that these affected survival of the early life stages.

• Research Organization: Lawrence Livermore National Lab., CA (USA). Environmental Sciences Div.
• OSTI ID: 6324382
• Report Number(s): PB-89-162085/XAB
• Country of Publication: United States
• Language: English

Related Subjects

560152* -- Radiation Effects on Animals-- Animals
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACUTE EXPOSURE
ACUTE IRRADIATION
ANIMALS
ANNELIDS
BEAMS
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
DOCUMENT TYPES
DOSE-RESPONSE RELATIONSHIPS
ECOLOGY
ELECTROMAGNETIC RADIATION
EMBRYOS
FERTILITY
GAMMA RADIATION
INVERTEBRATES
IONIZING RADIATIONS
IRRADIATION
PHOTON BEAMS
PROGRESS REPORT
RADIATION EFFECTS
RADIATIONS
RADIOECOLOGY
REPRODUCTION