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The role of the egg jelly coat in protecting Hyla regilla and Bufo canorus embryos from Ultraviolet B radiation during development

Environmental Science and Pollution Research

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Abstract

Background. Previous studies have suggested that Ultraviolet B (UVB) radiation may play a role in amphibian population declines. Some of these studies also indicate that egg hatching success is unaltered in some species of anurans as a result of UVB exposure. It has been proposed that the egg mass jelly provides photoprotection to the developing embryos. Methods. Direct spectrophotometric scans of egg jelly, scans of egg jelly methanol extracts, and experimental manipulation in a solar simulator during development were all used to assess the role of egg mass jelly as a photoprotective agent. Results/Discussion. For Hyla regilla, scans of egg jelly and methanolic extracts (for mycosporine-like amino acid content) both displayed no absorption in the UV range. Experimental manipulation (removal of egg mass jelly) with both Hyla regilla and Bufo canorus egg masses in a solar simulator demonstrated that egg mass jelly played no apparent role in photoprotection of either of these species. Conclusions. Based on the results in this study it seems unlikely that the egg jelly coat is playing a crucial role in protecting developing embryos from the impact of UVB radiation.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The role of the egg jelly coat in protecting Hyla regilla and Bufo canorus embryos from Ultraviolet B radiation during development
Series title:
Environmental Science and Pollution Research
Volume
9
Issue:
6
Year Published:
2002
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
412
Last page:
416
Number of Pages:
5