journal article Show
Copeia Vol. 2008, No. 2 (Jun. 4, 2008) , pp. 261-272 (12 pages) Published By: American Society of Ichthyologists and Herpetologists (ASIH) https://www.jstor.org/stable/25140773 Read and download Log in through your school or library Read Online (Free) relies on page scans, which are not currently available to screen readers. To access this article, please contact JSTOR User Support. We'll provide a PDF copy for your screen reader.With a personal account, you can read up to 100 articles each month for free. Already have an account? Log in Monthly Plan
Yearly Plan
Purchase a PDFPurchase this article for $12.00 USD. Purchase this issue for $43.00 USD. Go to Table of Contents. How does it work?
Abstract Anolis lizards are the focus of most Caribbean lizard community ecology studies with few studies including other common species that might influence community structure. To study niche relationships and interspecific interactions in Antiguan lizard communities, we used five offshore islands with varying combinations of three diurnal lizards: Ameiva griswoldi, Anolis leachii, and Anolis wattsi. We collected data on perch height, substrate, thermal microhabitat, body size, head length, daily activity, and abundance to characterize the ecological niche of each species. Ameiva griswoldi was more similar to A. leachii in size and daily activity, but more similar to A. wattsi in perch height, and A. leachii and A. wattsi were more similar in thermal microhabitat. This pattern of niche differentiation was consistent with niche complementarity, where species are similar on some niche axes but differ on others. Using the same niche characteristics as in species comparisons, we tested for a niche shift among islands for A. wattsi. In the absence of A. griswoldi, A. wattsi used lower perches, sunnier microhabitats, and was found more often on the ground. In contrast, with A. leachii absent, A. wattsi perched higher, more often in the shade, and on trunks. Furthermore, A. wattsi was most abundant when with A. leachii only, but least abundant when alone with A. griswoldi. These results suggest interspecific interactions, most likely due to competition and intraguild predation, are important for structuring Antiguan lizard communities. Journal Information Copeia is an internationally respected, widely-cited quarterly that publishes original research on fishes, amphibians and reptiles, emphasizing systematics, ecology, conservation, behavior, genetics, morphology and physiology. Publisher Information The American Society of Ichthyologists and Herpetologists is dedicated to the scientific study of fishes, amphibians, and reptiles. The primary emphases of the Society are to increase knowledge about these organisms, to disseminate that knowledge through publications, conferences, symposia, and other means, and to encourage and support young scientists who will make future advances in these fields. The programs of the American Society of Ichthyologists and Herpetologists are part of a global effort to interpret, understand, and conserve the Earth's natural diversity and to contribute to the wise use of natural resources for the long-term benefit of humankind. Do lizards of the same body type tend to be more closely related to one another than to lizards of different body types?DNA sequencing data indicates that lizards on each island tend to be more closely related to each other than to similar species on other islands, indicating that the same types of anoles evolved independently on different islands.
Are the species of lizard that are more similar to one another according to body type also more closely related based on the results obtained in this module?t are similar according to body type are not more closely related based on the results obtained from the DNA sequence analysis. This is because similar body types are farther away from each other on the phylogeny tree. What conclusion can you draw about the evolution of the Anolis lizards based on these figures?
Are ecomorphs always closely related?Except for two twig species, none of the ecomorphs cluster together, meaning they are not closely related.
How do anoles identify members of the same species?Each anole species has a dewlap of a characteristic color and shape, as well as specific head bobbing and dewlap displaying behaviors. These traits help anoles communicate with members of the same species, attract mates, and ward off ...
|
Are all anole lizards genus Anolis are more closely related to one another than they are to Leiocephalus Carinatus?
Urheberrechte © © 2024 defrojeostern Inc.
