Sources of pheromones in the lizard Liolaemus tenuis

Experimental tests were conducted with the lizard Liolaemus tenuis (Tropiduridae), to determine the potential sources of pheromones used in its chemical communication, centered in the phenomenon of self-recognition. During the post-reproductive season, feces of both sexes and secretions of precloaca...

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Autores principales:	Labra,Antonieta, Escobar,Carlos A., Aguilar,Paz M., Niemeyer,Hermann M.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2002
Materias:	self-recognition Liolaemus precloacal secretions lizards chemical discrimination semiochemicals
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100013
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spelling	oai:scielo:S0716-078X20020001000132002-06-14Sources of pheromones in the lizard Liolaemus tenuisLabra,AntonietaEscobar,Carlos A.Aguilar,Paz M.Niemeyer,Hermann M. self-recognition Liolaemus precloacal secretions lizards chemical discrimination semiochemicals Experimental tests were conducted with the lizard Liolaemus tenuis (Tropiduridae), to determine the potential sources of pheromones used in its chemical communication, centered in the phenomenon of self-recognition. During the post-reproductive season, feces of both sexes and secretions of precloacal pores (present only in males) were tested. Stimuli were presented to lizards spread on rocks, and the number of tongue-flicks (TF) to the rocks was used as a bioassay to determine pheromone recognition. Feces contained pheromones involved in self-recognition, since lizards showed less TF confronted to rocks with suspensions of their own feces than with suspensions of feces of conspecifics or with water (control). In order to assess the chemical nature of self-recognition pheromones, feces were submitted to a sequential extraction with three solvents of increasing polarity, thereby obtaining three feces fractions. There were no differences in TF towards rocks with different fractions with own feces. Additionally, lizards showed similar TF to rocks with fractions of own and conspecific feces, suggesting that the separation procedure broke up a complex stimulus into parts that were not active individually as pheromones. Finally, males did not discriminate between precloacal secretions from themselves and from another male. It is possible that these secretions convey information relevant to or detectable by females onlyinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.75 n.1 20022002-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100013en10.4067/S0716-078X2002000100013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	self-recognition Liolaemus precloacal secretions lizards chemical discrimination semiochemicals
spellingShingle	self-recognition Liolaemus precloacal secretions lizards chemical discrimination semiochemicals Labra,Antonieta Escobar,Carlos A. Aguilar,Paz M. Niemeyer,Hermann M. Sources of pheromones in the lizard Liolaemus tenuis
description	Experimental tests were conducted with the lizard Liolaemus tenuis (Tropiduridae), to determine the potential sources of pheromones used in its chemical communication, centered in the phenomenon of self-recognition. During the post-reproductive season, feces of both sexes and secretions of precloacal pores (present only in males) were tested. Stimuli were presented to lizards spread on rocks, and the number of tongue-flicks (TF) to the rocks was used as a bioassay to determine pheromone recognition. Feces contained pheromones involved in self-recognition, since lizards showed less TF confronted to rocks with suspensions of their own feces than with suspensions of feces of conspecifics or with water (control). In order to assess the chemical nature of self-recognition pheromones, feces were submitted to a sequential extraction with three solvents of increasing polarity, thereby obtaining three feces fractions. There were no differences in TF towards rocks with different fractions with own feces. Additionally, lizards showed similar TF to rocks with fractions of own and conspecific feces, suggesting that the separation procedure broke up a complex stimulus into parts that were not active individually as pheromones. Finally, males did not discriminate between precloacal secretions from themselves and from another male. It is possible that these secretions convey information relevant to or detectable by females only
author	Labra,Antonieta Escobar,Carlos A. Aguilar,Paz M. Niemeyer,Hermann M.
author_facet	Labra,Antonieta Escobar,Carlos A. Aguilar,Paz M. Niemeyer,Hermann M.
author_sort	Labra,Antonieta
title	Sources of pheromones in the lizard Liolaemus tenuis
title_short	Sources of pheromones in the lizard Liolaemus tenuis
title_full	Sources of pheromones in the lizard Liolaemus tenuis
title_fullStr	Sources of pheromones in the lizard Liolaemus tenuis
title_full_unstemmed	Sources of pheromones in the lizard Liolaemus tenuis
title_sort	sources of pheromones in the lizard liolaemus tenuis
publisher	Sociedad de Biología de Chile
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100013
work_keys_str_mv	AT labraantonieta sourcesofpheromonesinthelizardliolaemustenuis AT escobarcarlosa sourcesofpheromonesinthelizardliolaemustenuis AT aguilarpazm sourcesofpheromonesinthelizardliolaemustenuis AT niemeyerhermannm sourcesofpheromonesinthelizardliolaemustenuis
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Sources of pheromones in the lizard Liolaemus tenuis

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