Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions

We review factors influencing Liolaemus distributions in the central Chilean Andes and suggest areas of future research. Our previous studies reveal that lizard parasites (ectoparasitic mites and ticks, and the endoparasite Plasmodium) do not set Liolaemus altitudinal limits. Thermal tolerances do n...

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Autores principales:	CAROTHERS,JOHN H., JAKSIC,FABIÁN M., MARQUET,PABLO A.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2001
Materias:	altitudinal gradient central Chile species distribution thermal biology parasite load microhabitat preference interspecific competition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200008
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spelling	oai:scielo:S0716-078X20010002000082001-11-08Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questionsCAROTHERS,JOHN H.JAKSIC,FABIÁN M.MARQUET,PABLO A. altitudinal gradient central Chile species distribution thermal biology parasite load microhabitat preference interspecific competition We review factors influencing Liolaemus distributions in the central Chilean Andes and suggest areas of future research. Our previous studies reveal that lizard parasites (ectoparasitic mites and ticks, and the endoparasite Plasmodium) do not set Liolaemus altitudinal limits. Thermal tolerances do not appear to limit altitudinal distributions, although cold ambient temperatures dictate that only live-bearing species can occur above 2,400 m elevation. Three Liolaemus species specialize on elevationally restricted microhabitats. Liolaemus tenuis is found exclusively in or at the base of trees, which are typically below 1,800 m. Liolaemus leopardinus specializes on large rocky outcrops found at high altitudes. Liolaemus monticola uses smaller rocks: oviparity set its upper distributional limit on two transects, but on one transect this lizard and its rocky habitat virtually disappeared above 1,500 m. Interspecific competition among Liolaemus appeared unrelated to elevational distribution. We found no instances of parapatric distributions among pairs of Liolaemus species having similar niche requirements. Other researchers have found that predation does not correlate with elevation: its role in determining lizard species distributions depends on both predator and prey identities. We conclude that factors setting distributional limits of Liolaemus species vary depending on individual circumstances in time and space: where physiology may be relevant on one transect, preferred microhabitat availability may be important in anotherinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.74 n.2 20012001-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200008en10.4067/S0716-078X2001000200008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	altitudinal gradient central Chile species distribution thermal biology parasite load microhabitat preference interspecific competition
spellingShingle	altitudinal gradient central Chile species distribution thermal biology parasite load microhabitat preference interspecific competition CAROTHERS,JOHN H. JAKSIC,FABIÁN M. MARQUET,PABLO A. Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
description	We review factors influencing Liolaemus distributions in the central Chilean Andes and suggest areas of future research. Our previous studies reveal that lizard parasites (ectoparasitic mites and ticks, and the endoparasite Plasmodium) do not set Liolaemus altitudinal limits. Thermal tolerances do not appear to limit altitudinal distributions, although cold ambient temperatures dictate that only live-bearing species can occur above 2,400 m elevation. Three Liolaemus species specialize on elevationally restricted microhabitats. Liolaemus tenuis is found exclusively in or at the base of trees, which are typically below 1,800 m. Liolaemus leopardinus specializes on large rocky outcrops found at high altitudes. Liolaemus monticola uses smaller rocks: oviparity set its upper distributional limit on two transects, but on one transect this lizard and its rocky habitat virtually disappeared above 1,500 m. Interspecific competition among Liolaemus appeared unrelated to elevational distribution. We found no instances of parapatric distributions among pairs of Liolaemus species having similar niche requirements. Other researchers have found that predation does not correlate with elevation: its role in determining lizard species distributions depends on both predator and prey identities. We conclude that factors setting distributional limits of Liolaemus species vary depending on individual circumstances in time and space: where physiology may be relevant on one transect, preferred microhabitat availability may be important in another
author	CAROTHERS,JOHN H. JAKSIC,FABIÁN M. MARQUET,PABLO A.
author_facet	CAROTHERS,JOHN H. JAKSIC,FABIÁN M. MARQUET,PABLO A.
author_sort	CAROTHERS,JOHN H.
title	Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
title_short	Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
title_full	Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
title_fullStr	Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
title_full_unstemmed	Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions
title_sort	altitudinal zonation among lizards of the genus liolaemus: questions answered and unanswered questions
publisher	Sociedad de Biología de Chile
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200008
work_keys_str_mv	AT carothersjohnh altitudinalzonationamonglizardsofthegenusliolaemusquestionsansweredandunansweredquestions AT jaksicfabianm altitudinalzonationamonglizardsofthegenusliolaemusquestionsansweredandunansweredquestions AT marquetpabloa altitudinalzonationamonglizardsofthegenusliolaemusquestionsansweredandunansweredquestions
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Altitudinal zonation among lizards of the genus Liolaemus: questions answered and unanswered questions

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