Journal
ZOOLOGICAL SCIENCE
Volume 24, Issue 8, Pages 820-823Publisher
ZOOLOGICAL SOC JAPAN
DOI: 10.2108/zsj.24.820
Keywords
salinity tolerance; amphibian eggs; Buergeria japonica; coastal area; egg mortality
Categories
Ask authors/readers for more resources
Buergeria japonica is one of a few frogs that breed in coastal areas. To understand why this species can breed in coastal areas, I tested the salinity tolerance of eggs of B. japonica collected from a coastal area of Okinawa Island, Japan. All eggs hatched within four days after oviposition. At 0%circle salinity (control), over 94% of eggs hatched normally, and even at 1%circle salinity over 85% of eggs hatched. Survival rate of eggs was low at 2, 3, and 4%circle, and no eggs hatched at 5%circle salinity. These results indicate that low salinity, close to pure water, is necessary for successful egg development, even for populations of B. japonica that breed in coastal areas. Future studies are necessary to examine whether females of B. japonica breeding in coastal areas select appropriate oviposition sites where the environmental salinity level is sufficiently low for eggs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available