Title
Frog nuptial pads secrete mating season-specific proteins related to salamander pheromonesFrog nuptial pads secrete mating season-specific proteins related to salamander pheromones
Author
Faculty/Department
Faculty of Sciences. Biology
Research group
Systemic Physiological and Ecotoxicological Research (SPHERE)
Publication type
article
Publication
London,
Subject
Biology
Human medicine
Source (journal)
The journal of experimental biology. - London
Volume/pages
216(2013):22, p. 4139-4143
ISSN
0022-0949
0022-0949
ISI
000326499900006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Males of many frog species develop spiny nuptial pads with underlying glands on their thumbs during the mating period. We used 3D visualization on the European common frog Rana temporaria to show that the morphology of these glands allows the channelling of secreted molecules to the pad's surface during amplexus. Combined transcriptome and proteome analyses show that proteins of the Ly-6/uPAR family, here termed amplexins, are highly expressed in the nuptial glands during the mating season, but are totally absent outside that period. The function of amplexins remains unknown, but it is interesting to note that they share structural similarities with plethodontid modulating factors, proteins that influence courtship duration in salamanders.
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