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Diversity of form in the amphibian papilla of Puerto Rican frogsIn modern frogs, the amphibian papilla exhibits a caudal extension whose shape, relative length, and proportion of hair cells vary markedly from species to species. Tuning in the caudal extension is organized tonotopically and evidently involves the tectorium. In terms of the proportion of amphibian-papillar hair cells in the caudal extension, we report more diversity among 8 species of a single genus (Eleutherodactylus) on a single island (Puerto Rico) than has been found so far among all of the (more than 50) other modern anurans examined for this feature from around the world. These 8 Puerto Rican species have overlapping habitat and conspicuous diversity in the male advertisement call. For 7 of the 8 species, we report that the call has transient spectral components in the frequency range of the amphibian papilla, and that the proportion of caudal extension hair cells and the frequency distribution of those components are correlated. Thus one might conclude that the selective pressures that led to diversity of calls among the 8 species also led to diversity in form of the amphibian papilla.
Document ID
20050000574
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lewis, E. R.
(University of California Berkeley 94720)
Hecht, E. I.
Narins, P. M.
Date Acquired
August 22, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Journal of comparative physiology. A, Sensory, neural, and behavioral physiology
Volume: 171
Issue: 4
ISSN: 0340-7594
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: DC 00222
CONTRACT_GRANT: HL40521-01
CONTRACT_GRANT: DC00112
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Neuroscience

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