5 Works

Species divergence and repeated ancient hybridization in a Sulawesian lake system

Kazunori Yamahira, Ixchel Mandagi, Ryo Kakioka, Javier Montenegro, Hirozumi Kobayashi, Kawilarang Masengi, Nobuyuki Inomata, Atsushi Nagano, Atsushi Toyoda, Satoshi Ansai, Masatoshi Matsunami, Ryosuke Kimura, Jun Kitano & Junko Kusumi
An increasing volume of empirical studies demonstrated that hybridization between distant lineages may have promoted speciation in various taxa. However, the timing, extent, and direction of introgressive hybridization remain unknown in many cases. Here, we report a possible case in which repeated hybridization promoted divergence of Oryzias ricefishes (Adrianichthyidae) on Sulawesi, an island of Wallacea. Four Oryzias species are endemic to the Malili Lake system in central Sulawesi, which is composed of five tectonic lakes;...

Mesozoic origin and out-of-India radiation of ricefishes (Adrianichthyidae)

Kazunori Yamahira, Satoshi Ansai, Ryo Kakioka, Hajime Yaguchi, Takeshi Kon, Hirozumi Kobayashi, Javier Montenegro, Shingo Fujimoto, Ryosuke Kimura, Yusuke Takehana, Davin Setiamarga, Yasuoki Takami, Rieko Tanaka, Ken Maeda, Hau Tran, Noriyuki Koizumi, Shinsuke Morioka, Vongvichith Bounsong, Katsutoshi Watanabe, Prachya Musikasinthorn, Sein Tun, L. K. C Yun, Kawilarang Masengi, VK Anoop, Rajeev Raghavan … & Jun Kitano
The Indian subcontinent has an origin geologically different from Eurasia, but many terrestrial animal and plant species on it have congeneric or sister species in other parts of Asia, especially in the Southeast. This faunal and floral similarity between India and Southeast Asia is explained by either of the two biogeographic scenarios, ‘into-India’ or ‘out-of-India.’ Phylogenies based on complete mitochondrial genome and five nuclear genes were undertaken for ricefishes (Adrianichthyidae) to examine which of these...

Resource partitioning is not coupled with assortative mating in sympatrically divergent ricefish in a Wallacean ancient lake

Ryo Kakioka, Nobu Sutra, Hirozumi Kobayashi, Satoshi Ansai, Kawilarang Masengi, Atsushi Nagano, Noboru Okuda, Rieko Tanaka, Masahiro Sato & Kazunori Yamahira
Sympatric speciation is considered to be difficult without the coupling between ecological traits that allow resource partitioning and reproductive traits that allow assortative mating. Such “magic traits” are known to be involved in most of the compelling examples of sympatric speciation. In this study, we report a possible case of sympatric speciation without magic traits. Three species of ricefish (genus Oryzias) are suggested to have diverged sympatrically within Lake Poso, an ancient lake in Sulawesi....

Past deforestation (2000-2018) and future deforestation probability (2019-2053) for Wallacea

M. Voigt, J. Supriatna, N.J. Deere, A. Kastanya, S.L. Mitchell, I.M.D. Rosa, T. Santika, R. Siregar, J.S. Tasirin, A. Widyanto, N.L. Winarni, Z. Zakaria, S. Mumbunan, Z.G. Davies & M.J. Struebig
Primary forest cover and forest cover loss in Wallacea for the years 2000-2018 to train a deforestation model and produce maps of projected probability of deforestation until 2053.

Ancient geological dynamics impact neutral biodiversity accumulation and are detectable in phylogenetic reconstructions

Leonel Herrera-Alsina, Adam Algar, Greta Bocedi, Cecile Gubry-Rangin, Lesley Lancaster, Poppy Mynard, Owen Osborne, Alexander Papadopulos, Simon Creer, Meis Nangoy, Fahri Fahri, Pungki Lupiyaningdyah, I Made Sudiana, Berry Juliandi & Justin Travis
Aim Landmasses have been continuously modified by tectonic activity, the breakup and collision of landmasses is thought to have generated or suppressed ecological opportunities, altering the rates of speciation, dispersal and extinction. However, the extent to which the signatures of past geologic events are retained in modern biodiversity patterns - or obliterated by recent ecological dynamics - remains unresolved. We aim to identify the fingerprint of different scenarios of geological activity on phylogenetic trees and...

Registration Year

  • 2021
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Resource Types

  • Dataset
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Affiliations

  • Sam Ratulangi University
    4
  • Tohoku University
    3
  • University of the Ryukyus
    3
  • Bangor University
    2
  • Ryukoku University
    2
  • Kyoto University
    2
  • National Institute of Genetics
    2
  • Japan International Research Center for Agricultural Sciences
    1
  • Universitas Pattimura
    1
  • University of Greenwich
    1