Cai, Zhenyuan

Gao, Hongmei

Song, Pengfei

Su, Jianping

Zhang, Tongzuo

English

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6th International Conference of Rodent Biology and Management & 16th Rodens et Spatium, 2018, Potsdam  Julius-Kühn-Archiv, 459, 2018 263 Poster Session 2 – Taxonomy Genetics 81 Maternal divergences within Myospalax and introgressive hybridization in the eastern Qinghai-Tibet Plateau Zhenyuan Cai, Pengfei Song, Hongmei Gao, Jianping Su, Tongzuo Zhang           Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Key Laboratory of Adaptation and Evolution of Plateau Biota; Xining, China, caizhenyuan@nwipb.cas.cn  The zokor (genus Myospalax) is a subterranean solitary species. It remains unknown what had caused the morphological complexity and difficulty in species circumscription within Myospalax. Hybridization and gene flow are proposed for explaining such a scenario, especially for ambiguous hybridization origin of Myospalax smithii. The morphological characters of this species suggested its relationship to both old and young species; however, hybridization usually occurs between young species or lineages with recent divergences. Our phylogenetic analyses of mitochondrial cytochrome b gene (Cyt b) and 12S rRNA gene obtained from 102 individuals representing all eight species of the genus Myospalax produced well discerning maternal phylogeny within the genus. Our results further rejected a hybridization origin hypothesis of Myospalax smithii between Myospalax cansus and Myospalax myospalaxi. However, we found that morphologically defined Myospalax smithii individuals interweaved with those belonging to Myospalax baileyi. These individuals from two species clustered into two well supported clades. We suggest that Myospalax smithii should be recognized as separate species, but the extensive hybridization and gene flow between it and Myospalax baileyi might have swamped out most pure Myospalax smithii individuals possibly due to heterosis of hybrids. Our results are consistent with the previous assumption regarding occurrence of hybridization between recently divergent lineages with close relationships. However, this conclusion was drawn based only on a combination of morphological and maternal evidence; further evidence with genetic signatures from both parents (e.g. nuclear genes) is needed. Overall, these results suggest that Myospalax provides a model system for studying speciation, reproduction isolation and gene flow of small mammals.    Julius Kühn-InstitutBundesforschungsinstitut für Kulturpfl anzenJ u l i u s - K ü h n - A r c h i v6th International Conference of Rodent Biology and Management and16th Rodens et SpatiumPotsdam, Germany, 3-7 September 2018Book of AbstractsJens Jacob, Jana Eccard (Editors) J u l i u s - K ü h n - A r c h i vJulius Kühn-InstitutBundesforschungsinstitut für Kulturpfl anzen6th International Conference of Rodent Biology and Management and16th Rodens et SpatiumPotsdam, Germany, 3-7 September 2018Book of AbstractsJens Jacob, Jana Eccard (Editors) Bibliografische Information der Deutschen NationalbibliothekDie Deutsche Nationalbibliothek verzeichnet diese PublikationIn der Deutschen Nationalbibliografie: detaillierte bibliografischeDaten sind im Internet über http://dnb.d-nb.de abrufbar.ISSN 1868-9892ISBN 978-3-95547-059-3DOI 10.5073/jka.2018.459.000Editors:Jens Jacob1 and Jana Eccard21Julius Kuehn Institute, Federal Research Centre for Cultivated Plants,  Institute for Plant Protection in Horticulture and Forests, Vertebrate Research,  Toppheideweg 88, 48161 Münster, Germany2University of Potsdam, Institute of Biochemistry and Biology,  Animal Ecology Group, Maulbeerallee 1,  14469 Potsdam, Germany Local Organizing Committee:Jana Eccard, University of Potsdam   Jens Jacob, Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Münster Daniela Reil, Julius Kühn Institute, Federal Research Centre for Cultivated Plants, MünsterChristiane Scheffler, University of PotsdamElke Seydewitz, University of PotsdamScientific organising committee:Emil Tkadlec (Czech Republic); Frauke Ecke (Sweden); Grant Singleton (Philippines): Heikki Henttonen (Finland); Jana Eccard (Germany); Jens Jacob (Germany); Lyn Hinds (Australia); Prince Kaleme (Congo); Xavier Lambin (UK); Zhibin Zhang (China)International Steering Committee Rodens et Spatium:Abraham Haim (Israel); Alexey Surov (Russia); Ana Maria Benedek (Romania); Boris Krasnov (Israel);  Emil Tkadlec (Czech Republic); Éric Le Boulengé (Belgium); Farida Khammar (Algeria);  František Sedláček (Czech Republic); Gert Olsson (Sweden); Grant Singleton (Australia);  Heikki Henttonen (Finland); Jan Zima (Czech Republic); Jean-François Cosson (France); Linas Balčiauskas (Lithuania); Maria da Luz Mathias (Portugal); Molly McDonough (USA); Mustafa Sözen (Turkey);  Nigel Yoccoz (Norway); Olga Osipova (Russia); Takuya Shimada (Japan); Victor Sánchez Cordero (Mexico); Xavier Lambin (United Kingdom); Yasmina Dahmani (Algeria)International Steering Committee  International Conference of Rodent Biology and Management:Andrea Byrom (New Zealand); Charley Krebs (Canada); Grant Singleton (Philippines); Jens Jacob (Germany); Jiqi Lu (China); Lyn Hinds (Australia); Nico Avenant (South Africa); Peter Banks (Australia);  Peter Brown (Australia); Regino Cavia (Argentina); Rhodes Makundi (Tanzania); Roger Pech (New Zealand); Steven Belmain (UK); Sudarmaji (Indonesia); Zhibin Zhang (China)Alle Beiträge im Julius-Kühn-Archiv sind unter einerCreative Commons - Namensnennung - Weitergabe unter gleichen Bedingungen -  4.0 Lizenz veröffentlicht. Printed in Germany by Arno Brynda GmbH, Berlin.

Maternal divergences within Myospalax and introgressive hybridization in the eastern Qinghai-Tibet Plateau

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Maternal divergences within Myospalax and introgressive hybridization in the eastern Qinghai-Tibet Plateau

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