1
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Rowsey DM, Duya MRM, Ibañez JC, Jansa SA, Rickart EA, Heaney LR. A new genus and species of shrew-like mouse (Rodentia: Muridae) from a new center of endemism in eastern Mindanao, Philippines. J Mammal 2022; 103:1259-1277. [PMID: 36660555 PMCID: PMC9841421 DOI: 10.1093/jmammal/gyac057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/13/2022] [Indexed: 01/17/2023] Open
Abstract
The Philippine archipelago hosts an exceptional diversity of murid rodents that have diversified following several independent colonization events. Here, we report the discovery of a new species of rodent from Mt. Kampalili on eastern Mindanao Island. Molecular and craniodental analyses reveal this species as a member of a Philippine "New Endemic" clade consisting of Tarsomys, Limnomys, and Rattus everetti (tribe Rattini). This new species of "shrew-mouse" is easily distinguished from its relatives in both craniodental and external characteristics including a long, narrow snout; small eyes and ears; short, dark, dense fur dorsally and ventrally; stout body with a tapering, visibly haired tail shorter than head and body length; stout forepaws; bulbous and nearly smooth braincase; narrow, tapering rostrum; short incisive foramina; slender mandible; and narrow, slightly opisthodont incisors. This new genus and species of murid rodent illustrates that murids of the tribe Rattini have exhibited greater species and morphological diversification within the Philippines than previously known and provides evidence that Mt. Kampalili represents a previously unrecognized center of mammalian endemism on Mindanao Island that is deserving of conservation action.
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Affiliation(s)
| | - Mariano Roy M Duya
- Institute of Biology, University of the Philippines–Diliman, Quezon City, Philippines
| | - Jayson C Ibañez
- Philippine Eagle Foundation, Philippine Eagle Center, Malagos, Baguio District Davao City, Philippines
| | - Sharon A Jansa
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, Minnesota, USA
| | - Eric A Rickart
- Natural History Museum of Utah, University of Utah, Salt Lake City, Utah, USA
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2
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Abstract
Phylogenetic models have long assumed that lineages diverge independently. Processes of diversification that are of interest in biogeography, epidemiology, and genome evolution violate this assumption by affecting multiple evolutionary lineages. To relax the assumption of independent divergences and infer patterns of divergences predicted by such processes, we introduce a way of conceptualizing, modeling, and inferring phylogenetic trees. We apply the approach to genomic data from geckos distributed across the Philippines and find support for patterns of shared divergences predicted by repeated fragmentation of the archipelago by interglacial rises in sea level. Many processes of biological diversification can simultaneously affect multiple evolutionary lineages. Examples include multiple members of a gene family diverging when a region of a chromosome is duplicated, multiple viral strains diverging at a “super-spreading” event, and a geological event fragmenting whole communities of species. It is difficult to test for patterns of shared divergences predicted by such processes because all phylogenetic methods assume that lineages diverge independently. We introduce a Bayesian phylogenetic approach to relax the assumption of independent, bifurcating divergences by expanding the space of topologies to include trees with shared and multifurcating divergences. This allows us to jointly infer phylogenetic relationships, divergence times, and patterns of divergences predicted by processes of diversification that affect multiple evolutionary lineages simultaneously or lead to more than two descendant lineages. Using simulations, we find that the method accurately infers shared and multifurcating divergence events when they occur and performs as well as current phylogenetic methods when divergences are independent and bifurcating. We apply our approach to genomic data from two genera of geckos from across the Philippines to test if past changes to the islands’ landscape caused bursts of speciation. Unlike previous analyses restricted to only pairs of gecko populations, we find evidence for patterns of shared divergences. By generalizing the space of phylogenetic trees in a way that is independent from the likelihood model, our approach opens many avenues for future research into processes of diversification across the life sciences.
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3
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Esselstyn JA, Achmadi AS, Handika H, Swanson MT, Giarla TC, Rowe KC. Fourteen New, Endemic Species of Shrew (Genus Crocidura) from Sulawesi Reveal a Spectacular Island Radiation. BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY 2021. [DOI: 10.1206/0003-0090.454.1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Jacob A. Esselstyn
- Museum of Natural Science and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA
| | - Anang S. Achmadi
- Museum Zoologicum Bogoriense, Indonesian Institute of Sciences, Cibinong, West Java, Indonesia
| | - Heru Handika
- Museum of Natural Science and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA
| | - Mark T. Swanson
- Museum of Natural Science and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA
| | | | - Kevin C. Rowe
- Sciences Department, Museums Victoria, Melbourne, Victoria, Australia
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4
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Latinne A, Chen HW, Kuo CC, Lorica R, Singleton G, Stuart A, Malbas FF, Demanche C, Chabé M, Michaux J, Morand S. Revisiting the Pneumocystis host specificity paradigm and transmission ecology in wild Southeast Asian rodents. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2021; 93:104978. [PMID: 34175480 DOI: 10.1016/j.meegid.2021.104978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/04/2021] [Accepted: 06/21/2021] [Indexed: 01/16/2023]
Abstract
Pneumocystis fungi are opportunistic parasites of mammalian lungs whose evolution, ecology and host specificity in natural host populations remain poorly understood and controversial. Using an extensive collection of 731 lung samples from 27 rodent species sampled in five Southeast Asian countries, and nested PCR amplification of mitochondrial and nuclear genes, we investigated the host specificity and genetic structure of Pneumocystis lineages infecting wild rodents. We also identified the rodent species playing a central role in the transmission of these parasites using network analysis and centrality measurement and we characterized the environmental conditions allowing Pneumocystis infection in Southeast Asia using generalized linear mixed models. Building upon an unprecedented Pneumocystis sampling from numerous rodent species belonging to closely related genera, our findings provide compelling evidence that the host specificity of Pneumocystis lineages infecting rodents is not restricted to a single host species or genus as often presented in the literature but it encompasses much higher taxonomic levels and more distantly related rodent host species. The phylogenetic species status at both mitochondrial and nuclear genetic markers of at least three new Pneumocystis lineages, highly divergent from Pneumocystis species currently described, is also suggested by our data. Our models show that the probability of Pneumocystis infection in rodent hosts is positively correlated to environmental variables reflecting habitat fragmentation and landscape patchiness. Synanthropic and habitat-generalist rodents belonging to the Rattus, Sundamys and Bandicota genera played a role of bridge host species for Pneumocystis spreading in these heterogeneous habitats, where they can reach high population densities. These are critical findings improving our understanding of the ecology of these enigmatic parasites and the role played by cospeciation and host switches in their evolution. Our results also confirmed the role of land-use change and habitat fragmentation in parasite amplification and spillover in rodents.
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Affiliation(s)
- Alice Latinne
- Wildlife Conservation Society, Viet Nam Country Program, Ha Noi, Viet Nam; Wildlife Conservation Society, Health Program, Bronx, NY, USA; Université de Liège, Laboratoire de Génétique de la Conservation, GeCoLAB, 4000 Liège, Belgium.
| | - Hsuan-Wien Chen
- Department of Biological Resources, National Chiayi University, Chiayi, Taiwan
| | - Chi-Chien Kuo
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Renee Lorica
- International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Grant Singleton
- International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines; Natural Resource Institute, University of Greenwich, Chatham Maritime, Kent, UK
| | - Alex Stuart
- International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Fedelino F Malbas
- Research Institute for Tropical Medicine, Department of Health, Muntinlupa, Metro Manila, Philippines
| | - Christine Demanche
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Johan Michaux
- Université de Liège, Laboratoire de Génétique de la Conservation, GeCoLAB, 4000 Liège, Belgium; Animal Santé Territoire Risque Environnement- Unité Mixe de Recherche 117 (ASTRE) Univ. Montpellier, Centre International de Recherche Agronomique pour le Développement (CIRAD), Institut National de la Recherche Agronomique, 34398 Montpellier, France
| | - Serge Morand
- University of Montpellier, Institut des Sciences de l'Evolution, CNRS-IRD, Montpellier, France; University of Kasetsart, Faculty of Veterinary Technology, ASTRE-CIRAD, Bangkok, Thailand
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5
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Handika H, Achmadi AS, Esselstyn JA, Rowe KC. Molecular and morphological systematics of the Bunomys division (Rodentia: Muridae), an endemic radiation on Sulawesi. ZOOL SCR 2020. [DOI: 10.1111/zsc.12460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heru Handika
- Department of Biological Sciences Museum of Natural Science Louisiana State University Baton Rouge LA USA
- Sciences Department Museums Victoria Melbourne VIC Australia
- School of Biosciences University of Melbourne Parkville, Melbourne VIC Australia
| | - Anang S. Achmadi
- Museum Zoologicum Bogoriense Indonesian Institute of Sciences Cibinong Indonesia
| | - Jacob A. Esselstyn
- Department of Biological Sciences Museum of Natural Science Louisiana State University Baton Rouge LA USA
| | - Kevin C. Rowe
- Sciences Department Museums Victoria Melbourne VIC Australia
- School of Biosciences University of Melbourne Parkville, Melbourne VIC Australia
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6
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Parker LD, Hawkins MTR, Camacho-Sanchez M, Campana MG, West-Roberts JA, Wilbert TR, Lim HC, Rockwood LL, Leonard JA, Maldonado JE. Little genetic structure in a Bornean endemic small mammal across a steep ecological gradient. Mol Ecol 2020; 29:4074-4090. [PMID: 32911576 DOI: 10.1111/mec.15626] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/14/2020] [Accepted: 08/20/2020] [Indexed: 01/02/2023]
Abstract
Janzen's influential "mountain passes are higher in the tropics" hypothesis predicts restricted gene flow and genetic isolation among populations spanning elevational gradients in the tropics. Few studies have tested this prediction, and studies that focus on population genetic structure in Southeast Asia are particularly underrepresented in the literature. Here, we test the hypothesis that mountain treeshrews (Tupaia montana) exhibit limited dispersal across their broad elevational range which spans ~2,300 m on two peaks in Kinabalu National Park (KNP) in Borneo: Mt Tambuyukon (MT) and Mt Kinabalu (MK). We sampled 83 individuals across elevations on both peaks and performed population genomics analyses on mitogenomes and single nucleotide polymorphisms from 4,106 ultraconserved element loci. We detected weak genetic structure and infer gene flow both across elevations and between peaks. We found higher genetic differentiation on MT than MK despite its lower elevation and associated environmental variation. This implies that, contrary to our hypothesis, genetic structure in this system is not primarily shaped by elevation. We propose that this pattern may instead be the result of historical processes and limited upslope gene flow on MT. Importantly, our results serve as a foundational estimate of genetic diversity and population structure from which to track potential future effects of climate change on mountain treeshrews in KNP, an important conservation stronghold for the mountain treeshrew and other montane species.
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Affiliation(s)
- Lillian D Parker
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,School of Systems Biology, George Mason University, Fairfax, VA, USA
| | - Melissa T R Hawkins
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,Division of Mammals, Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Department of Environmental Science and Policy, George Mason University, Fairfax, VA, USA
| | - Miguel Camacho-Sanchez
- Conservation and Evolutionary Genetics Group, Estación Biológica de Doñana (EBD-CSIC), Seville, Spain
| | - Michael G Campana
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,School of Systems Biology, George Mason University, Fairfax, VA, USA.,Department of Environmental Science and Policy, George Mason University, Fairfax, VA, USA
| | - Jacob A West-Roberts
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Tammy R Wilbert
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA
| | - Haw Chuan Lim
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,School of Systems Biology, George Mason University, Fairfax, VA, USA
| | - Larry L Rockwood
- School of Systems Biology, George Mason University, Fairfax, VA, USA
| | - Jennifer A Leonard
- Conservation and Evolutionary Genetics Group, Estación Biológica de Doñana (EBD-CSIC), Seville, Spain
| | - Jesús E Maldonado
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute and National Zoological Park, Washington, DC, USA.,School of Systems Biology, George Mason University, Fairfax, VA, USA.,Department of Environmental Science and Policy, George Mason University, Fairfax, VA, USA
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7
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Breed WG, Hassan H, Gonzalez M, McLennan HJ, Leigh CM, Heaney LR. Interspecific diversity of testes mass and sperm morphology in the Philippine chrotomyine rodents: implications for differences in breeding systems across the species. Reprod Fertil Dev 2019; 31:705-711. [PMID: 30475689 DOI: 10.1071/rd18278] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/23/2018] [Indexed: 01/16/2023] Open
Abstract
The high diversity of native Philippine murid rodents includes an old endemic group, the chrotomyines, which are the sister group of the Australasian hydromyines. Herein we detail their interspecific diversity of relative testes mass (RTM) and sperm morphology. We find that in chrotomyines, as in the Australasian hydromyines, testes mass relative to body mass differs by an order of magnitude across the species and ranges from a large RTM in Soricomys and Chrotomys species to a small RTM in Apomys. Sperm morphology is associated with these findings, with individuals in species of Soricomys and Chrotomys producing relatively larger spermatozoa with a prominent apical hook and long tail, whereas, by contrast, the Apomys species have a sperm head that either has a very short or no apical hook and a shorter tail. These findings indicate coevolution of RTM with sperm morphological traits across the species, with the marked interspecific differences in RTM suggesting differences in the intensity of intermale sperm competition and hence breeding system. Thus, we hypothesise that species of Soricomys and Chrotomys that produce more streamlined spermatozoa with longer tails have a polyandrous or promiscuous mating system, whereas the Apomys species, which produce smaller and less streamlined spermatozoa, may exhibit monogamy.
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Affiliation(s)
- William G Breed
- Robinson Research Institute, School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hazirah Hassan
- Robinson Research Institute, School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Macarena Gonzalez
- Robinson Research Institute, School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hanna J McLennan
- Robinson Research Institute, School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Chris M Leigh
- Robinson Research Institute, School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Lawrence R Heaney
- Field Museum of Natural History, Division of Mammals, 1400 South Lake Shore Drive, Chicago, Illinois 60605, USA
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8
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Oaks JR, Siler CD, Brown RM. The comparative biogeography of Philippine geckos challenges predictions from a paradigm of climate-driven vicariant diversification across an island archipelago. Evolution 2019; 73:1151-1167. [PMID: 31017301 PMCID: PMC6767427 DOI: 10.1111/evo.13754] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 04/10/2019] [Indexed: 01/05/2023]
Abstract
A primary goal of biogeography is to understand how large-scale environmental processes, like climate change, affect diversification. One often-invoked but seldom tested process is the "species-pump" model, in which repeated bouts of cospeciation are driven by oscillating climate-induced habitat connectivity cycles. For example, over the past three million years, the landscape of the Philippine Islands has repeatedly coalesced and fragmented due to sea-level changes associated with glacial cycles. This repeated climate-driven vicariance has been proposed as a model of speciation across evolutionary lineages codistributed throughout the islands. This model predicts speciation times that are temporally clustered around the times when interglacial rises in sea level fragmented the islands. To test this prediction, we collected comparative genomic data from 16 pairs of insular gecko populations. We analyze these data in a full-likelihood, Bayesian model-choice framework to test for shared divergence times among the pairs. Our results provide support against the species-pump model prediction in favor of an alternative interpretation, namely that each pair of gecko populations diverged independently. These results suggest the repeated bouts of climate-driven landscape fragmentation have not been an important mechanism of speciation for gekkonid lizards across the Philippine Archipelago.
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Affiliation(s)
- Jamie R. Oaks
- Department of Biological Sciences & Museum of Natural HistoryAuburn UniversityAuburnAlabama36849
| | - Cameron D. Siler
- Sam Noble Oklahoma Museum of Natural History and Department of BiologyUniversity of OklahomaNormanOklahoma73072
| | - Rafe M. Brown
- Biodiversity Institute and Department of Ecology and Evolutionary BiologyUniversity of KansasLawrenceKansas66045
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9
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Kyriazis CC, Alam B, Wjodyla M, Hackett S, Hosner P, Mays HL, Heaney LR, Reddy S. Colonization and diversification of the white-browed shortwing (Aves: Muscicapidae: Brachypteryx montana) in the Philippines. Mol Phylogenet Evol 2018; 121:121-131. [PMID: 29305243 DOI: 10.1016/j.ympev.2017.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 12/01/2017] [Accepted: 12/24/2017] [Indexed: 10/18/2022]
Abstract
Molecular phylogenetic approaches have greatly improved our knowledge of the pattern and process of biological diversification across the globe; however, many regions remain poorly documented, even for well-studied vertebrate taxa. The Philippine archipelago, one of the least-studied 'biodiversity hotspots', is an ideal natural laboratory for investigating the factors driving diversification in an insular and geologically dynamic setting. We investigated the history and geography of diversification of the Philippine populations of a widespread montane bird, the White-browed Shortwing (Brachypteryx montana). Leveraging dense archipelago-wide sampling, we generated a multi-locus genetic dataset (one nuclear and two mtDNA markers), which we analyzed using phylogenetic, population genetic, and coalescent-based methods. Our results demonstrate that Philippine shortwings (1) likely colonized the Philippines from the Sunda Shelf to Mindanao in the late Miocene or Pliocene, (2) diversified across inter-island barriers into three divergent lineages during the Pliocene and early Pleistocene, (3) have not diversified within the largest island, Luzon, contrary to patterns observed in other montane taxa, and (4) colonized Palawan from the oceanic Philippines rather than from Borneo, challenging the assumption of Palawan functioning exclusively as a biogeographic extension of the Sunda Shelf. Additionally, our finding that divergent (c. 4.0 mya) lineages are coexisting in secondary sympatry on Mindanao without apparent gene flow suggests that the speciation process is likely complete for these shortwing lineages. Overall, these investigations provide insight into how topography and island boundaries influence diversification within remote oceanic archipelagos and echo the results of many other studies in demonstrating that taxonomic diversity continues to be underestimated in the Philippines.
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Affiliation(s)
- Christopher C Kyriazis
- Biology Department, Loyola University Chicago, 1050 W. Sheridan Road, Chicago, IL 60660, USA
| | - Bushra Alam
- Biology Department, Loyola University Chicago, 1050 W. Sheridan Road, Chicago, IL 60660, USA
| | - Mark Wjodyla
- Biology Department, Loyola University Chicago, 1050 W. Sheridan Road, Chicago, IL 60660, USA
| | - Shannon Hackett
- Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA
| | - Peter Hosner
- Department of Biology, University of Florida, Gainesville, FL 32607, USA
| | - Herman L Mays
- Department of Biological Sciences, Marshall University, Huntington, WV 25755, USA; Cincinnati Museum Center, Cincinnati, OH 45203, USA
| | - Lawrence R Heaney
- Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA
| | - Sushma Reddy
- Biology Department, Loyola University Chicago, 1050 W. Sheridan Road, Chicago, IL 60660, USA.
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10
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Demos TC, Achmadi AS, Giarla TC, Handika H, Maharadatunkamsi, Rowe KC, Esselstyn JA. Local endemism and within-island diversification of shrews illustrate the importance of speciation in building Sundaland mammal diversity. Mol Ecol 2016; 25:5158-5173. [PMID: 27552382 DOI: 10.1111/mec.13820] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 08/09/2016] [Accepted: 08/16/2016] [Indexed: 01/15/2023]
Abstract
Island systems are important models for evolutionary biology because they provide convenient, discrete biogeographic units of study. Continental islands with a history of intermittent dry land connections confound the discrete definitions of islands and have led zoologists to predict (1) little differentiation of terrestrial organisms among continental shelf islands and (2) extinction, rather than speciation, to be the main cause of differences in community composition among islands. However, few continental island systems have been subjected to well-sampled phylogeographic studies, leaving these biogeographic assumptions of connectivity largely untested. We analyzed nine unlinked loci from shrews of the genus Crocidura from seven mountains and two lowland localities on the Sundaic continental shelf islands of Sumatra and Java. Coalescent species delimitation strongly supported all currently recognized Crocidura species from Sumatra (six species) and Java (five species), as well as one undescribed species endemic to each island. We find that nearly all species of Crocidura in the region are endemic to a single island and several of these have their closest relative(s) on the same island. Intra-island genetic divergence among allopatric, conspecific populations is often substantial, perhaps indicating species-level diversity remains underestimated. One recent (Pleistocene) speciation event generated two morphologically distinct, syntopic species on Java, further highlighting the prevalence of within-island diversification. Our results suggest that both between- and within-island speciation processes generated local endemism in Sundaland, supplementing the traditional view that the region's fauna is relictual and primarily governed by extinction. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Terrence C Demos
- Museum of Natural Science, Louisiana State University, Baton Rouge, LA, 70803, USA.,Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA.,Science and Education, Field Museum of Natural History, Chicago, IL, 60605, USA
| | - Anang S Achmadi
- Museum Zoologicum Bogoriense, Research Center for Biology-LIPI, Cibinong, Bogor, 16911, Indonesia
| | - Thomas C Giarla
- Museum of Natural Science, Louisiana State University, Baton Rouge, LA, 70803, USA.,Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA.,Department of Biology, Siena College, Loudonville, NY, 12211, USA
| | - Heru Handika
- Sciences Department, Museum Victoria, Melbourne, 3001, VIC, Australia.,School of Biosciences, The University of Melbourne, Melbourne, 3001, VIC, Australia
| | - Maharadatunkamsi
- Museum Zoologicum Bogoriense, Research Center for Biology-LIPI, Cibinong, Bogor, 16911, Indonesia
| | - Kevin C Rowe
- Sciences Department, Museum Victoria, Melbourne, 3001, VIC, Australia.,School of Biosciences, The University of Melbourne, Melbourne, 3001, VIC, Australia
| | - Jacob A Esselstyn
- Museum of Natural Science, Louisiana State University, Baton Rouge, LA, 70803, USA.,Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
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11
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Rowe KC, Achmadi AS, Esselstyn JA. Repeated evolution of carnivory among Indo-Australian rodents. Evolution 2016; 70:653-65. [PMID: 26826614 DOI: 10.1111/evo.12871] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 01/08/2016] [Accepted: 01/12/2016] [Indexed: 12/30/2022]
Abstract
Convergent evolution, often observed in island archipelagos, provides compelling evidence for the importance of natural selection as a generator of species and ecological diversity. The Indo-Australian Archipelago (IAA) is the world's largest island system and encompasses distinct biogeographic units, including the Asian (Sunda) and Australian (Sahul) continental shelves, which together bracket the oceanic archipelagos of the Philippines and Wallacea. Each of these biogeographic units houses numerous endemic rodents in the family Muridae. Carnivorous murids, that is those that feed on animals, have evolved independently in Sunda, Sulawesi (part of Wallacea), the Philippines, and Sahul, but the number of origins of carnivory among IAA murids is unknown. We conducted a comprehensive phylogenetic analysis of carnivorous murids of the IAA, combined with estimates of ancestral states for broad diet categories (herbivore, omnivore, and carnivore) and geographic ranges. These analyses demonstrate that carnivory evolved independently four times after overwater colonization, including in situ origins on the Philippines, Sulawesi, and Sahul. In each biogeographic unit the origin of carnivory was followed by evolution of more specialized carnivorous ecomorphs such as vermivores, insectivores, and amphibious rats.
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Affiliation(s)
- Kevin C Rowe
- Sciences Department, Museum Victoria, Melbourne, Australia.
| | - Anang S Achmadi
- Research Center for Biology, Museum Zoologicum Bogoriense, Cibinong, Jawa Barat, Indonesia
| | - Jacob A Esselstyn
- Museum of Natural Science, 119 Foster Hall, Louisiana State University, Baton Rouge, Louisiana, 70803.,Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, 70803
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12
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Esselstyn JA, Achmadi AS, Handika H, Rowe KC. A hog-nosed shrew rat (Rodentia: Muridae) from Sulawesi Island, Indonesia. J Mammal 2015. [DOI: 10.1093/jmammal/gyv093] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Sánchez-González LA, Hosner PA, Moyle RG. Genetic Differentiation in Insular Lowland Rainforests: Insights from Historical Demographic Patterns in Philippine Birds. PLoS One 2015; 10:e0134284. [PMID: 26312748 PMCID: PMC4552387 DOI: 10.1371/journal.pone.0134284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 07/07/2015] [Indexed: 11/25/2022] Open
Abstract
Phylogeographic studies of Philippine birds support that deep genetic structure occurs across continuous lowland forests within islands, despite the lack of obvious contemporary isolation mechanisms. To examine the pattern and tempo of diversification within Philippine island forests, and test if common mechanisms are responsible for observed differentiation, we focused on three co-distributed lowland bird taxa endemic to Greater Luzon and Greater Negros-Panay: Blue-headed Fantail (Rhipidura cyaniceps), White-browed Shama (Copsychus luzoniensis), and Lemon-throated Leaf-Warbler (Phylloscopus cebuensis). Each species has two described subspecies within Greater Luzon, and a single described subspecies on Greater Negros/Panay. Each of the three focal species showed a common geographic pattern of two monophyletic groups in Greater Luzon sister to a third monophyletic group found in Greater Negros-Panay, suggesting that common or similar biogeographic processes may have produced similar distributions. However, studied species displayed variable levels of mitochondrial DNA differentiation between clades, and genetic differentiation within Luzon was not necessarily concordant with described subspecies boundaries. Population genetic parameters for the three species suggested both rapid population growth from small numbers and geographic expansion across Luzon Island. Estimates of the timing of population expansion further supported that these events occurred asynchronously throughout the Pleistocene in the focal species, demanding particular explanations for differentiation, and support that co-distribution may be secondarily congruent.
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Affiliation(s)
- Luis Antonio Sánchez-González
- Natural History Museum and Biodiversity Institute, Dyche Hall, University of Kansas, 1345 Jayhawk Blvd., Lawrence, Kansas 66045-7561, United States of America
- * E-mail:
| | - Peter A. Hosner
- Natural History Museum and Biodiversity Institute, Dyche Hall, University of Kansas, 1345 Jayhawk Blvd., Lawrence, Kansas 66045-7561, United States of America
| | - Robert G. Moyle
- Natural History Museum and Biodiversity Institute, Dyche Hall, University of Kansas, 1345 Jayhawk Blvd., Lawrence, Kansas 66045-7561, United States of America
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Stanley WT, Hutterer R, Giarla TC, Esselstyn JA. Phylogeny, phylogeography and geographical variation in theCrocidura monax(Soricidae) species complex from the montane islands of Tanzania, with descriptions of three new species. Zool J Linn Soc 2015. [DOI: 10.1111/zoj.12230] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- William T. Stanley
- Science and Education; Field Museum of Natural History; 1400 South Lake Shore Drive Chicago IL 60605 USA
| | - Rainer Hutterer
- Zoologisches Forschungsmuseum Alexander Koenig; Adenauerallee 160 53113 Bonn Germany
| | - Thomas C. Giarla
- Museum of Natural Science and Department of Biological Sciences; Louisiana State University; 119 Foster Hall Baton Rouge LA 70803 USA
| | - Jacob A. Esselstyn
- Museum of Natural Science and Department of Biological Sciences; Louisiana State University; 119 Foster Hall Baton Rouge LA 70803 USA
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Blasdell K, Bordes F, Chaisiri K, Chaval Y, Claude J, Cosson JF, Latinne A, Michaux J, Morand S, Pagès M, Tran A. Progress on research on rodents and rodent-borne zoonoses in South-east Asia. WILDLIFE RESEARCH 2015. [DOI: 10.1071/wr14201] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review aims to synthesise knowledge regarding the taxonomy of South-east Asian murine rodents and the challenges associated with the identification of habitat preferences and associated rodent-borne diseases. Recent studies concerning the Rattini tribe have identified unclear species boundaries that would benefit from further investigation. The development of barcoding may allow more accurate identification of rodents, specifically for complex species. However, knowledge on the distribution and habitat specialisations of many common murine rodents is still scarce, particularly regarding the specific habitat preferences of most synanthropic rodent species (Rattus tanezumi or Rattus exulans). Several studies have analysed the prevalence of major rodent-borne diseases in South-east Asia and it appears that the greatest risk of rodent zoonoses are in the lowland rain-fed and irrigated landscapes, generally in and around rice fields.
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Heaney LR, Balete DS, Rickart EA, Veluz MJ, Jansa SA. Three New Species ofMusseromys(Muridae, Rodentia), the Endemic Philippine Tree Mouse from Luzon Island. AMERICAN MUSEUM NOVITATES 2014. [DOI: 10.1206/3802.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Esselstyn JA, Achmadi AS, Maharadatunkamsi. A new species of shrew (Soricomorpha:Crocidura) from West Java, Indonesia. J Mammal 2014. [DOI: 10.1644/13-mamm-a-215] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Heaney LR, Balete DS, Veluz MJ, Steppan SJ, Esselstyn JA, Pfeiffer AW, Rickart EA. Two new species of Philippine forest mice (Apomys, Muridae, Rodentia) from Lubang and Luzon Islands, with a redescription ofApomys sacobianusJohnson, 1962. P BIOL SOC WASH 2014. [DOI: 10.2988/0006-324x-126.4.395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Brown RM, Siler CD, Oliveros CH, Esselstyn JA, Diesmos AC, Hosner PA, Linkem CW, Barley AJ, Oaks JR, Sanguila MB, Welton LJ, Blackburn DC, Moyle RG, Townsend Peterson A, Alcala AC. Evolutionary Processes of Diversification in a Model Island Archipelago. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2013. [DOI: 10.1146/annurev-ecolsys-110411-160323] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rafe M. Brown
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - Cameron D. Siler
- Sam Noble Museum and Department of Biology, University of Oklahoma, Norman, Oklahoma 73073-7029;
| | - Carl H. Oliveros
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - Jacob A. Esselstyn
- Museum of Natural Science and Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803;
| | - Arvin C. Diesmos
- Herpetology Section, Zoology Division, National Museum of the Philippines, Manila, Philippines;
| | - Peter A. Hosner
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - Charles W. Linkem
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
- Current address: Department of Biology, University of Washington, Seattle, Washington 98195;
| | - Anthony J. Barley
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - Jamie R. Oaks
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | | | - Luke J. Welton
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
- Department of Biology, Brigham Young University, Provo, Utah 84602;
| | - David C. Blackburn
- Department of Vertebrate Zoology and Anthropology, California Academy of Sciences, San Francisco, California 94118;
| | - Robert G. Moyle
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - A. Townsend Peterson
- Department of Ecology and Evolution and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045; , , , , , ,
| | - Angel C. Alcala
- Silliman University-Angelo King Center for Research and Environmental Management (SUAKCREM), SU-Marine Laboratory, 6200 Dumaguete City, Philippines;
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Esselstyn JA, Maharadatunkamsi, Achmadi AS, Siler CD, Evans BJ. Carving out turf in a biodiversity hotspot: multiple, previously unrecognized shrew species co-occur on Java Island, Indonesia. Mol Ecol 2013; 22:4972-87. [PMID: 24010862 DOI: 10.1111/mec.12450] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 07/06/2013] [Accepted: 07/08/2013] [Indexed: 11/28/2022]
Abstract
In theory, competition among species in a shared habitat results in niche separation. In the case of small recondite mammals such as shrews, little is known about their autecologies, leaving open questions regarding the degree to which closely related species co-occur and how or whether ecological niches are partitioned. The extent to which species are able to coexist may depend on the degree to which they exploit different features of their habitat, which may in turn influence our ability to recognize them as species. We explored these issues in a biodiversity hotspot, by surveying shrew (genus Crocidura) diversity on the Indonesian island of Java. We sequenced portions of nine unlinked genes in 100-117 specimens of Javan shrews and incorporated homologous data from most known Crocidura species from other parts of island South-East Asia. Current taxonomy recognizes four Crocidura species on Java, including two endemics. However, our phylogenetic, population genetic and species delimitation analyses identify five species on the island, and all are endemic to Java. While the individual ranges of these species may not overlap in their entirety, we found up to four species living syntopically and all five species co-occurring on one mountain. Differences in species' body size, use of above ground-level habitats by one species and habitat partitioning along ecological gradients may have facilitated species diversification and coexistence.
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Affiliation(s)
- Jacob A Esselstyn
- Biology Department, McMaster University, Hamilton, Ontario, Canada L8S 4K1
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Balete DS, Rickart EA, Heaney LR, Alviola PA, Duya MV, Duya MRM, Sosa T, Jansa SA. Archboldomys(Muridae: Murinae) Reconsidered: A New Genus and Three New Species of Shrew Mice from Luzon Island, Philippines. AMERICAN MUSEUM NOVITATES 2012. [DOI: 10.1206/3754.2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Esselstyn JA, Evans BJ, Sedlock JL, Anwarali Khan FA, Heaney LR. Single-locus species delimitation: a test of the mixed Yule-coalescent model, with an empirical application to Philippine round-leaf bats. Proc Biol Sci 2012; 279:3678-86. [PMID: 22764163 DOI: 10.1098/rspb.2012.0705] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Prospects for a comprehensive inventory of global biodiversity would be greatly improved by automating methods of species delimitation. The general mixed Yule-coalescent (GMYC) was recently proposed as a potential means of increasing the rate of biodiversity exploration. We tested this method with simulated data and applied it to a group of poorly known bats (Hipposideros) from the Philippines. We then used echolocation call characteristics to evaluate the plausibility of species boundaries suggested by GMYC. In our simulations, GMYC performed relatively well (errors in estimated species diversity less than 25%) when the product of the haploid effective population size (N(e)) and speciation rate (SR; per lineage per million years) was less than or equal to 10(5), while interspecific variation in N(e) was twofold or less. However, at higher but also biologically relevant values of N(e) × SR and when N(e) varied tenfold among species, performance was very poor. GMYC analyses of mitochondrial DNA sequences from Philippine Hipposideros suggest actual diversity may be approximately twice the current estimate, and available echolocation call data are mostly consistent with GMYC delimitations. In conclusion, we consider the GMYC model useful under some conditions, but additional information on N(e), SR and/or corroboration from independent character data are needed to allow meaningful interpretation of results.
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Affiliation(s)
- Jacob A Esselstyn
- Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA.
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Heaney LR. Nyctalus plancyi and Falsistrellus petersi (Chiroptera: Vespertilionidae) from Northern Luzon, Philippines: Ecology, Phylogeny, and Biogeographic Implications. ACTA CHIROPTEROLOGICA 2012. [DOI: 10.3161/150811012x661602] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lawrence R. Heaney
- Department of Zoology, Field Museum of Natural History, 1400 S Lake Shore Drive, Chicago, IL 60605, USA
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Heaney LR, Piper PJ, Mijares ASB. The first fossil record of endemic murid rodents from the Philippines: A late Pleistocene cave fauna from northern Luzon. P BIOL SOC WASH 2011. [DOI: 10.2988/10-32.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Rickart EA, Balete DS, Rowe RJ, Heaney LR. Mammals of the northern Philippines: tolerance for habitat disturbance and resistance to invasive species in an endemic insular fauna. DIVERS DISTRIB 2011. [DOI: 10.1111/j.1472-4642.2011.00758.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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