Morphological and genetic evidence for a new karst specialist lizard from new Guinea (Cyrtodactylus: Gekkonidae)
Date
2017
Authors
Nielsen, Stuart
Oliver, Paul
Journal Title
Journal ISSN
Volume Title
Publisher
The Royal Society Publishing
Abstract
Exposed limestone karst landscapes, especially in the tropics, are often home to distinctive and specialized biotas. Among vertebrates, a particularly large number of karst-associated lizard taxa have been described, but for the vast majority, evidence of specific adaptions to karst is lacking. A number of studies, however, have provided evidence of consistent morphological trends in lizards that use complex, three-dimensional, saxicoline habitats such as those that typify karst areas. Here we combine morphological and genetic data to test whether a newly discovered gecko from an extremely rugged karst area in New Guinea shows morphological trends matching those observed in other lizards associated with complex rock habitats such as karst and caves. Consistent with predictions, the new species' head is flatter and narrower than similar-sized relatives, and it has proportionally larger eyes and longer limbs. These trends indicate this taxon represents the second documented instance of karst specialization in a New Guinean vertebrate, and suggest morphological traits to test for evidence of specialized ecological associations in the many karst-associated Cyrtodactylus taxa from Southeast Asia.
Description
Keywords
Cyrtodactylus, ecological diversity, gecko, morphometric analysis, specialization
Citation
Collections
Source
Royal Society Open Science
Type
Journal article
Book Title
Entity type
Access Statement
Open Access
License Rights
Creative Commons Attribution License
Restricted until
Downloads
File
Description