Nova Publishers
My Account Nova Publishers Shopping Cart
HomeBooksSeriesJournalsReference CollectionseBooksInformationSalesImprintsFor Authors
  Top » Catalog » Books » Biology » Zoology » Reptiles in Research: Investigations of Ecology, Physiology, and Behavior from Desert to Sea Chapters » My Account  |  Cart Contents  |  Checkout   
Quick Find
Use keywords to find the product you are looking for.
Advanced Search
What's New? more
Advances in Nanotechnology. Volume 20
Shopping Cart more
0 items
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Notifications more
NotificationsNotify me of updates to Life on the Cliffs: The Ontogeny of Habitat Selection and Diet Shifts in Spiny-Tailed Iguanas (pp. 51-74)
Tell A Friend
Tell someone you know about this product.
Life on the Cliffs: The Ontogeny of Habitat Selection and Diet Shifts in Spiny-Tailed Iguanas (pp. 51-74) $100.00
Authors:  (Richard D. Durtsche, Northern Kentucky University, KY, USA)
The Mexican spiny-tailed iguana (Ctenosaura pectinata) occupies various positions
on canyon walls, rock outcrops, and associated vegetative habitats. This study explores
the occupation of these habitats in relation to the ontogenetic shifts in size, morphological
condition, diet, and social structure among different age classes of this lizard. The pattern
of habitat selection and thermal ecology in this tropical iguanid lizard coincides with its
shifts ontogenetically from insectivory to herbivory. Determinants of habitat selection
varied based on body size, body coloration, and feeding strategy. The population was
size-structured, including two immature cohorts and adults. Five different habitats were
used by this population. Rock habitats (outcrops and cliffs) offered lizards the highest
temperatures ( = 44.7˚ C) but the least cover. Vegetation habitats, including herbaceous
plant, shrub, and tree habitats, offered variation in elevation and cover. Burrow habitats
provided lizards refuge against thermal extremes and predation. Adult lizards dominated
elevated positions ( = 7.6 m) through social status on food-scarce rock cliff and outcrop
habitats. In these positions, basking activity supported effective digestion of plants at
body temperatures ( = 34.8˚ 0.57˚ C) within the thermal performance range (33˚-38˚
C) throughout most of the day. Large adult body size and rock coloration, reduced
predation risks and facilitated territorial dominance over sub-adult lizards. Subadult
lizards were found in a wide range of other habitats. Juveniles were found only in lowerelevation
plant habitats (in shrubs, = 1.4 m), where body coloration statistically
matched that of the vegetation, and insect foods were abundant. Small size and low
thermal inertia allowed juveniles to maintain mean body temperatures similar to those of
adults in habitats with little direct sunlight. A model is proposed for sized- or life historybased
habitat selection in ectotherms that allows them to maintain active body

Available Options:
This Item Is Currently Unavailable.
Special Focus Titles
01.Global Political Economy after the Crisis: Theoretical Perspectives and Country Experiences
02.Palliative Care: Perspectives, Practices and Impact on Quality of Life. A Global View, Volume 1
03.Trace Metals: Evolution, Environmental and Ecological Significance
04.Informal Learning: Perspectives, Challenges and Opportunities
05.Dissolved Organic Matter (DOM): Properties, Applications and Behavior
06.Green Polymeric Materials: Advances and Sustainable Development
07.Readings in the 20th Century Genocide of the Syriac Orthodox Church of Antioch (Sayfo)
08.Human Collaboration in Homeland Security (DVD Included)
09.Health and Freedom in the Balance: Exploring the Tensions among Public Health, Individual Liberty, and Governmental Authority
10.Innovations in Dialysis Vascular Access Surgery
11.Major Depressive Disorder: Risk Factors, Characteristics and Treatment Options
12.Inulin: Chemical Properties, Uses and Health Benefits

Nova Science Publishers
© Copyright 2004 - 2017

Life on the Cliffs: The Ontogeny of Habitat Selection and Diet Shifts in Spiny-Tailed Iguanas (pp. 51-74)