Published accounts describe the eggs of spotted frogs (Rana luteiventris and Rana pretiosa) as having either 1 or 2 jelly envelopes surrounding the ovum. Eggs of R. luteiventris are typically reported to have a single jelly envelope, whereas those of R. pretiosa are reported to have 2 envelopes. We found, however, that both species' eggs actually have 3 jelly envelopes. In this paper we describe the eggs of both species, and identify the origin of the discrepancy in the scientific literature.
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9 March 2021
THE STRUCTURE OF SPOTTED FROG (RANA LUTEIVENTRIS AND RANA PRETIOSA) EGGS: A PHYSICAL DESCRIPTION AND HISTORICAL PERSPECTIVE
Chris Rombough,
Jay Bowerman
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Northwestern Naturalist
Vol. 102 • No. 1
Spring 2021
Vol. 102 • No. 1
Spring 2021
frog egg
jelly envelope
Rana luteiventris
Rana pretiosa
spotted frog