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Consecuencias de la Exposición Embriónica a la UV‐B para Embriones y Renacuajos de la Rana Leopardo de las Planicies
Author(s) -
Smith Geoffrey R.,
Waters Mary Ann,
Rettig Jessica E.
Publication year - 2000
Publication title -
conservation biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.2
H-Index - 222
eISSN - 1523-1739
pISSN - 0888-8892
DOI - 10.1111/j.1523-1739.2000.99364.x
Subject(s) - biology , leopard frog , embryo , sun exposure , hatching , developmental stage , zoology , rana , ecology , anatomy , fishery , medicine , psychology , developmental psychology , dermatology
In organisms with complex life cycles, understanding the effects of environmental change requires investigating the possibility that the effect of such change on one stage will have consequences for other stages. We investigated the effects of embryonic exposure to UV‐B radiation on embryo and tadpole development of the plains leopard frog ( Rana blairi ). Embryos were exposed to sunlight filtered to provide two levels of UV‐B exposure (e.g., at 310 nm: high exposure is approximately 84% transmittance and low exposure is approximately 58% transmittance). Hatching success of embryos exposed to different UV‐B levels did not differ. Tadpoles resulting from exposed embryos were raised at three densities. Growth and development were slower in tadpoles exposed to higher UV‐B levels as embryos. Density negatively affected growth and development. Survivorship did not differ among UV‐B or density treatments. Our results suggest that even if lethal effects are not exhibited at one stage, sublethal effects may manifest themselves at other stages, possibly affecting the long‐term success of exposed individuals and populations.