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dc.contributor.author
Castañaga, Luis Alfredo
dc.contributor.author
Asorey, Cynthia M.
dc.contributor.author
Sandoval, María Teresa
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Perez Coll, Cristina Silvia
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Argibay, Teresa I.
dc.contributor.author
Herkovits, Jorge
dc.date.available
2024-08-30T11:48:37Z
dc.date.issued
2009-02
dc.identifier.citation
Castañaga, Luis Alfredo; Asorey, Cynthia M.; Sandoval, María Teresa; Perez Coll, Cristina Silvia; Argibay, Teresa I.; et al.; Stage‐dependent teratogenic and lethal effects exerted by ultraviolet B radiation on Rhinella (Bufo ) arenarum embryos; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 28; 2; 2-2009; 427-433
dc.identifier.issn
0730-7268
dc.identifier.uri
http://hdl.handle.net/11336/243331
dc.description.abstract
The adverse effects of ultraviolet B radiation from 547.2 to 30,096 J/m2 on morphogenesis, cell differentiation, and lethality of amphibian embryos at six developmental stages were evaluated from 24 up to 168 h postexposure. The ultraviolet B radiation lethal dose 10, 50, and 90 values were obtained for all developmental stages evaluated. The lethal dose 50 values, considered as the dose causing lethality in the 50% of the organisms exposed, in J/m2 at 168 h postexposure, ranged from 2,307 to 18,930; gill circulation and blastula were the most susceptible and resistant stages, respectively. Ultraviolet B radiation caused malformations in all developmental stages but was significantly more teratogenic at the gill circulation and complete operculum stages. Moreover, at the gill circulation stage, even the lowest dose (547.2 J/m2) resulted in malformations to 100% of embryos. The most common malformations were persistent yolk plug, bifid spine, reduced body size, delayed development, asymmetry, microcephaly and anencephaly, tail and body flexures toward the irradiated side, agenesia or partial gill development, abnormal pigment distribution, and hypermotility. The stage-dependent susceptibility to ultraviolet B radiation during amphibian embryogenesis could be explained in the framework of evoecotoxicology, considering ontogenic features as biomarkers of environmental signatures of living forms ancestors during the evolutionary process. The stage-dependent susceptibility to ultraviolet B radiation on Rhinella (Bufo) arenarum embryos for both lethal and teratogenic effects could contribute to a better understanding of the role of the increased ultraviolet B radiation on worldwide amphibian populations decline.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society of Environmental Toxicology and Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ECOTOXICOLOGY
dc.subject
UVB
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AMPHIBIAN EMBRYOS
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EVOLUTION
dc.subject.classification
Ciencias Medioambientales
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Stage‐dependent teratogenic and lethal effects exerted by ultraviolet B radiation on Rhinella (Bufo ) arenarum embryos
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-30T11:26:39Z
dc.journal.volume
28
dc.journal.number
2
dc.journal.pagination
427-433
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Castañaga, Luis Alfredo. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Asorey, Cynthia M.. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina
dc.description.fil
Fil: Sandoval, María Teresa. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina
dc.description.fil
Fil: Perez Coll, Cristina Silvia. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Argibay, Teresa I.. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina
dc.description.fil
Fil: Herkovits, Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Pro Salud y Medio Ambiente. Instituto de Ciencias Ambientales y Salud; Argentina
dc.journal.title
Environmental Toxicology and Chemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://setac.onlinelibrary.wiley.com/doi/full/10.1897/08-144.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1897/08-144.1
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