Effects of high dose rate gamma radiation on survival and reproduction of Biomphalaria glabrata
Carregando...
Data
Data de publicação:
2009
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st
Exportar
Resumo
Ionizing radiations are known as mutagenic agents, causing lethality and infertility. This characteristic has
motivated its application on animal biological control. In this context, the freshwater snail Biomphalaria
glabrata can be considered an excellent experimental model to study effects of ionizing radiations on lethality
and reproduction. This work was designed to evaluate effects of 60Co gamma radiation at high dose rate
(10.04 kGy/h) on B. glabrata. For this purpose, adult snails were selected and exposed to doses ranging from 20
to 100 Gy, with 10 Gy intervals; one group was kept as control. There was not effect of dose rate in the lethality
of gamma radiation; the value of 64,3 Gy of LD50 obtained in our study was similar to that obtained by other
authors with low dose rates. Nevertheless, our data suggest that there was a dose rate effect in the reproduction.
On all dose levels, radiation improved the production of embryos for all exposed individuals. However, viability
indexes were below 6% and, even 65 days after irradiation, fertility was not recovered. These results are not in
agreement with other studies using low dose rates. Lethality was obtained in all groups irradiated, and the
highest doses presented percentiles of dead animals above 50%. The results demonstrated that doses of 20 and
30 Gy were ideal for population control of B. glabrata. Further studies are needed; nevertheless, this research
evidenced great potential of high dose rate gamma radiation on B. glabrata reproductive control.
Como referenciar
CANTINHA, REBECA S.; AMARAL, ADEMIR; BORRELY, SUELI I.; NAKANO, ELIANA; SILVA, LUANNA R.S.; MELO, ANA M.M.A. Effects of high dose rate gamma radiation on survival and reproduction of Biomphalaria glabrata. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16567. Acesso em: 28 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.