The Effect of UV-B Radiation on Bufo arenarum Embryos Survival and Superoxide Dismutase Activity

J. Herkovits, J. L. D´Eramo and O. Fridman
Additional contact information
J. Herkovits: Programa de Seguridad Química, Instituto de Ciencias Ambientales y Salud, Fundación PROSAMA, Paysandú 752 (1405), Buenos Aires, Argentina. Member of Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) de la Argentina
J. L. D´Eramo: Programa de Seguridad Química, Instituto de Ciencias Ambientales y Salud, Fundación PROSAMA, Paysandú 752 (1405), Buenos Aires, Argentina. Member of Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) de la Argentina
O. Fridman: Programa de Seguridad Química, Instituto de Ciencias Ambientales y Salud, Fundación PROSAMA, Paysandú 752 (1405), Buenos Aires, Argentina. Member of Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) de la Argentina

IJERPH, 2006, vol. 3, issue 1, 1-5

Abstract: The exposure of Bufo arenarum embryos to 300-310 nm UV-B at a dose of 4,104 Joule/m2 resulted in 100% lethality within 24 hr while 820 Joule/m 2 was the NOEC value for short-term chronic (10 days) exposure. The dose response curves show that lethal effects are proportional with the dose and achieve its highest value within 48 hr post exposure. The superoxide dismutase (SOD) activity in amphibian embryos for sublethal UV-B exposures was evaluated by means of UV-B treatments with 273 (A), 820(B), 1368(C) and 1915(D) Joule/m 2 at 2 and 5 hours post irradiation. The SOD activity in units/mg protein in A, B, C and D at 2 hr after treatments were 80.72 ± 14.29, 74.5 ± 13.19, 39.5 ± 6.99 and 10.7 ± 1.89 respectively while for control embryos it was 10.88 ± 1.31. At 5 hr after treatments the SOD values were similar to those found in control embryos. The results confirm the high susceptibility of amphibian embryos to UV-B and point out that the SOD activity is enhanced by low doses of UV-B irradiation achieving significantly higher values than in control embryos at 2 hr post exposure.

Keywords: UV-B; Amphibian embryos; Superoxide dismutase (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2006
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/3/1/43/pdf (application/pdf)
https://www.mdpi.com/1660-4601/3/1/43/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:3:y:2006:i:1:p:43-47:d:2371

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().