The Shape of Water: Physiological Adaptations to Habitat Aridity in the Ornate Tree Lizard (Urosaurus ornatus)

被引:0
|
作者
Salazar, Jhan C. [1 ]
Miles, Donald B. [1 ,2 ]
机构
[1] Washington Univ, Dept Biol, St Louis, MO 63130 USA
[2] Ohio Univ, Dept Biol Sci, Athens, OH 45701 USA
基金
美国国家科学基金会;
关键词
CLIMATE-CHANGE; BODY-TEMPERATURE; MOUNTAIN PASSES; PLASTICITY; RESPONSES; PERFORMANCE; PATTERNS; ANIMALS; INSECTS; TROPICS;
D O I
10.1093/icb/icae061
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Deserts have always amazed researchers due to their high diversity of habitats, where plant and animal species have been able to adapt and diversify, even when these areas impose several constraints on an organism's activity patterns. In particular, deserts support several lizard species adapted to the thermal and water restrictions found in such biomes. Although several studies have attempted to understand how lizard species might respond to water deficits or droughts in deserts, few have addressed how these responses might vary along a latitudinal gradient. This raises the question of whether physiological buffering of the organism or the climatic environment affects water loss in lizards. Here, we used six populations of Urosaurus ornatus to test whether water loss is influenced more by the intrinsic physiology of the lizard or by the climatic niche. We found that water loss is primarily influenced by the climatic niche of the lizard. However, future studies should focus on how microclimatic variables can influence water loss in organisms found across large latitudinal gradients. Resumen Los desiertos siempre han fascinado a los investigadores debido a su alta diversidad de h & aacute;bitats, donde las especies de plantas y animales han podido adaptarse y diversificarse, incluso cuando estas & aacute;reas imponen varias restricciones a los patrones de actividad de los organismos. En particular, los desiertos albergan varias especies de lagartos adaptadas a las restricciones t & eacute;rmicas e h & iacute;dricas que se encuentran en estos biomas. Aunque varios estudios han intentado entender c & oacute;mo las especies de lagartos pueden responder al d & eacute;ficit de agua o la sequ & iacute;a en los desiertos, pocos han abordado c & oacute;mo esto podr & iacute;a variar a lo largo de un gradiente latitudinal. Esto plantea la pregunta de si el amortiguamiento fisiol & oacute;gico del organismo o el entorno clim & aacute;tico afecta la p & eacute;rdida de agua en los lagartos. Aqu & iacute;, utilizamos seis poblaciones de Urosaurus ornatus para probar si la p & eacute;rdida de agua est & aacute; influenciada por la fisiolog & iacute;a intr & iacute;nseca del lagarto o por el nicho clim & aacute;tico. Encontramos que la p & eacute;rdida de agua est & aacute; influenciada principalmente por el nicho clim & aacute;tico del lagarto. Sin embargo, estudios futuros deber & iacute;an centrarse en c & oacute;mo las variables microclim & aacute;ticas pueden influir en la p & eacute;rdida de agua en organismos encontrados a lo largo de grandes gradientes latitudinales.
引用
收藏
页码:390 / 401
页数:12
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