Translator Disclaimer
28 August 2020 Complete Embryonic and Larval Stages of Rana sakuraii (Ranidae), a Species that Metamorphoses without Feeding
Author Affiliations +
Abstract

The normal development of the brown frog Rana sakuraii is observed from oocyte to completion of metamorphosis in the laboratory at 15±2°C. Tadpoles of this species can develop completely without any food. Their development is divided into 40 stages and this paper provides descriptions and illustrations of the external features at each stage. After hatching, some developmental events occur simultaneously and elongation of hindlimb buds and toe formation are relatively rapid. On the average, the tadpoles reach the stage 36 with their maximum total length 22.8 mm after 43.9 days. They complete metamorphosis after 56.5 days, reaching the final stage 40 with 8.0 mm in snout to vent length. The labial teeth development of this non-feeding tadpole is generally weak and the formula at a given stage is greatly variable among individuals.

© 2020 by The Herpetological Society of Japan
Kei Kishimoto and Fumio Hayashi "Complete Embryonic and Larval Stages of Rana sakuraii (Ranidae), a Species that Metamorphoses without Feeding," Current Herpetology 39(2), 173-183, (28 August 2020). https://doi.org/10.5358/hsj.39.173
Accepted: 30 June 2020; Published: 28 August 2020
JOURNAL ARTICLE
11 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top