A new genus of rodent from Wallacea (Rodentia: Muridae: Murinae: Rattini), and its implication for biogeography and Indo-Pacific Rattini systematics
Year: 2013
Type: article
Abstract: We describe Halmaheramys bokimekot Fabre, Pages, Musser, Fitriana, Semiadi & Helgengen.etsp.nov., a new genus and species of murine rodent from the North Moluccas, and study its phylogenetic placement using both molecular and morphological data. We generated a densely sampled mitochondrial and nuclear DNA data set that included most genera of Indo-Pacific Murinae, and used probabilistic methodologies to infer their phylogenetic relationships. To reconstruct their biogeographical history, we first dated the topology and then used a Lagrange analysis to infer ancestral geographic areas. Finally, we combined the ancestral area reconstructions with temporal information to compare patterns of murine colonization among Indo-Pacific archipelagos. We provide a new and comprehensive molecular phylogenetic reconstruction for Indo-Pacific Murinae, with a focus on the Rattus division. Using previous results and those presented in this study, we define a new Indo-Pacific group within the Rattus division, composed of Bullimus, Bunomys, Paruromys, Halmaheramys, Sundamys, and Taeromys. Our phylogenetic reconstructions revealed a relatively recent diversification from the Middle Miocene to Plio-Pleistocene associated with several major dispersal events. We identified two independent Indo-Pacific dispersal events from both western and eastern Indo-Pacific archipelagos to the isolated island of Halmahera, which led to the speciations of H.bokimekotgen.etsp.nov. and Rattus morotaiensis Kellogg, 1945. We propose that a Middle Miocene collision between the Halmahera and Sangihe arcs may have been responsible for the arrival of the ancestor of Halmaheramys to eastern Wallacea. Halmaheramys bokimekotgen. et sp.nov. is described in detail, and its systematics and biogeography are documented and illustrated.(c) 2013 The Linnean Society of London
DOI: 10.1111/zoj.12061
Institutions: University of Copenhagen, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, University of Liège, Institut Agro Montpellier, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Centre de Biologie pour la Gestion des Populations, Institut de Recherche pour le Développement, American Museum of Natural History, Indonesian Institute of Sciences, Muséum national d'Histoire naturelle, Smithsonian Institution, National Museum of Natural History
Language: English
Subfield: Paleontology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
Funders: American Museum of Natural History, National Geographic Society, National Research Foundation, Danmarks Grundforskningsfond, Fonds De La Recherche Scientifique - FNRS, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Muséum National d'Histoire Naturelle, Lembaga Ilmu Pengetahuan Indonesia, U.S. Navy, Center for Makroøkologi, Evolution og Klima
Award: G293925641
OpenAlex ID: W2137709013