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Changes in Structure and Function of Ventral Epidermis in Hyla arborea savignyi Aud. (Anura; Hylidae) Throughout Metamorphosis
Author(s) -
Rosenberg Mira,
Warburg M. R.
Publication year - 1995
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1995.tb00995.x
Subject(s) - biology , metamorphosis , tadpole (physics) , epidermis (zoology) , hylidae , ultrastructure , tympanum (architecture) , anatomy , tree frog , larva , zoology , ecology , physics , particle physics , tympan , middle ear , myringotomy
The changes in epidermal ultrastructure during the metamorphic cycle of Hyla arborea are described. The number of cell layers increased from two to four in the late tadpole stages. The cell layers flatten and the process of stratification reaches its peak after the completion of metamorphosis. The mitochondria‐rich cell appears early in the tadpole stages. Numerous flask cells are noticeable in the post‐metamorphic stages. K+– p ‐NPPase activity was localized cytochemically in the epidermis of H. arborea during its metamorphic cycle. In the epidermis of the legless tadpole, evidence for K+– p ‐NPPase activity was confined intracellularly. During the later tadpole stages, preceding metamorphic climax, the main ATPase activity shifted to the baso‐lateral cell membranes bordering with the intercellular spaces under the surface and later the stratum corneum. This continued after metamorphic climax in the juvenile toadlets, diminishing later in the adult stage.