Abstract
A staged series with time data and original photographs of the embryonic development of the tree frog, Hyla arborea are presented, following Gosner’s generalized table. To contribute to species specific embryological studies of anurans, the external features of development of this species were described. Duration of embryonic development, from fertilization to 25th stage, is about 9 days at 20 ± 1 °C. Cleavage is holoblastic and unequal. Unlike the typical anuran development, neurular rotation was not observed in stage 15 or in any other stages. Other developmental stages resulted in a normal-looking. Embryos of H. arborea hatched at stage 20 or 21, which varied individually. Hatching occurred in the 4th or 5th day after fertilization. The mean total length of hatchlings was calculated as 6.38 mm. The mean size of ovum was estimated 1.4 mm in diameter.
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Sayim, F., Kaya, U. Embryonic development of the tree frog, Hyla arborea . Biologia 63, 588–593 (2008). https://doi.org/10.2478/s11756-008-0086-z
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DOI: https://doi.org/10.2478/s11756-008-0086-z