Initial Dispersal and Breeding Habitat Use of Newly Introduced Mink Frogs in Western Newfoundland, Canada
| Autor: | Ian G. Warkentin, Dion O. Kelly, Robert J. Scott, Christine E. Campbell |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Amphibian education.field_of_study biology Ecology 010604 marine biology & hydrobiology Lithobates Population Introduced species Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Habitat biology.animal Biological dispersal Animal Science and Zoology Mink education Ecology Evolution Behavior and Systematics Mink frog |
| Zdroj: | Copeia. 105:389-398 |
| ISSN: | 1938-5110 0045-8511 |
| DOI: | 10.1643/ch-16-485 |
| Popis: | Insular Newfoundland has no native amphibians. While global amphibian populations are declining at alarming rates, populations of introduced anurans (frogs and toads) continue to expand in western Newfoundland, Canada. We expected the establishment and dispersal of the most recently introduced species, Mink Frog (Lithobates septentrionalis), to be influenced by the presence in the region of the previously introduced and ecologically similar Green Frog (L. clamitans). We used a combination of anuran calling surveys and pond-edge visual surveys to assess the ongoing dispersal, relative regional distribution, and local habitat use for these two species in western Newfoundland. The recently established Mink Frog has dispersed ∼3.8 km/year northeast from the original (2001) discovery location and ∼2.6 km/year southwest; co-occurrence analyses revealed that this population displayed habitat and spatial separation from long-established Green Frog populations, at both landscape and local scales. Although cause an... |
| Databáze: | OpenAIRE |
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