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Your search keyword '"island biology"' showing total 2 results
Start Over Descriptor "island biology" Journal ecology and evolution
2 results on '"island biology"'

1. Phylogeography of the Japanese greater horseshoe bat Rhinolophus nippon (Mammalia: Chiroptera) in Northeast Asia: New insight into the monophyly of the Japanese populations

Author

Yugo Ikeda and Masaharu Motokawa

Subjects
greater horseshoe bat, island biology, land bridge, phylogeny, reverse colonization, Ecology, QH540-549.5
Abstract

Abstract The Japanese greater horseshoe bat (Rhinolophus nippon) is distributed widely in East Asia. Within the species, R. nippon in Northeast Asia is regarded as the lineage that diverged most recently. However, the monophyly of the Japanese populations is unclear due to insufficient data about phylogenetic relationship of the western Japanese populations. To test the monophyly of the Japanese populations of R. nippon, we sampled R. nippon from western Japan and performed a phylogeographic analysis based on mitochondrial DNA cytochrome b and the D‐loop. The Northeast Asian lineage consisted of three main clades in eastern Japan (clade I), western Japan (clade II), and the continent as well as the Kumamoto population in westernmost Japan (clade III). The results of this study do not support the monophyly of the Japanese population. The findings suggest the “reverse colonization” of R. nippon from the Japanese Archipelago to the Eurasian continent, and provide important insight into the role of the island system in creation and supply of diversity to the continent.

Published
2021
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2. Cryptic diversity in<scp>B</scp>lack rats<scp>R</scp>attus rattusof the<scp>G</scp>alápagos<scp>I</scp>slands,<scp>E</scp>cuador

Author

Cody W. Edwards, Robert C. Dowler, Reese B. Phillips, Howard L. Snell, Tammy R. Wilbert, Michael R. Jarcho, and Sandi Willows-Munro

Subjects
0106 biological sciences, 0301 basic medicine, conservation biology, Population genetics, Zoology, phylogeography, Biology, 010603 evolutionary biology, 01 natural sciences, Invasive species, invasive species, Gene flow, 03 medical and health sciences, parasitic diseases, Biological invasions, Ecology, Evolution, Behavior and Systematics, Original Research, Nature and Landscape Conservation, geography, Genetic diversity, geography.geographical_feature_category, Ecology, rodent, Galápagos, genetic diversity, stomatognathic diseases, Phylogeography, 030104 developmental biology, island biology, Archipelago, Mammal, Conservation biology
Abstract

Human activity has facilitated the introduction of a number of alien mammal species to the Galápagos Archipelago. Understanding the phylogeographic history and population genetics of invasive species on the Archipelago is an important step in predicting future spread and designing effective management strategies. In this study, we describe the invasion pathway of Rattus rattus across the Galápagos using microsatellite data, coupled with historical knowledge. Microsatellite genotypes were generated for 581 R. rattus sampled from 15 islands in the archipelago. The genetic data suggest that there are at least three genetic lineages of R. rattus present on the Galápagos Islands. The spatial distributions of these lineages correspond to the main centers of human settlement in the archipelago. There was limited admixture among these three lineages, and these finding coupled with low rates of gene flow among island populations suggests that interisland movement of R. rattus is rare. The low migration among islands recorded for the species will have a positive impact on future eradication efforts.

Published
2016
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