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Life
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Selected Papers from The 2nd AsiaEvo Conference
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Selected Papers from The 2nd AsiaEvo Conference

A special issue of Life (ISSN 2075-1729). This special issue belongs to the section "Evolutionary Biology".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 5746

Special Issue Editors

Prof. Dr. Koichiro Tamura

E-Mail Website
Guest Editor
Department of Biological Sciences, Tokyo Metropolitan University, ‎Tokyo‎ 192-0397, Japan
Interests: evolutionary genetics; molecular phylogenetics; molecular and genome evolution; mathematical modeling; bioinformatics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Guojie Zhang

E-Mail Website
Guest Editor
Centre for Biodiversity Genomics, University of Copenhagen, 2100 Copenhagen Ø, Denmark
Interests: phylogenomics and tree of life; genome evolution and animal adaptation; functional genomics on social animals
Dr. Daiqin Li

E-Mail Website
Guest Editor
Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
Interests: behavioural ecology; animal communication; animal personality; biogeography; biomaterial; spiders

Special Issue Information

Dear Colleagues,

This Special Issue is cooperating with the 2nd AsiaEvo Conference (https://evolgen.biol.se.tmu.ac.jp/asiaevo2/). All speakers and registered participants at this conference are invited to submit a manuscript for publication at a discount of 20%. The Winners of Young Researcher Award were invited to publish the paper in this special issue free of charge.

The 2nd AsiaEvo Conference supports young researchers and students, providing the following awards (sponsored by Life) for presentations of excellent quality.

The Student Poster Award goes to:

  1. Riki Kawamura (Tokyo Institute of Technology)
    Title: Possibility of assortative mating via putative pheromone receptor V1R2 in East African Cichlid
  1. Tianzhu Xiong (Harvard University)
    Title: Genetic barriers to gene flow maintain the segregation of evolutionary speed during hybridization
  1. Xiaochan Yan (Primate research institute, Kyoto University)
    Title: Functional divergence of the pigmentation gene melanocortin-1 receptor (MC1R) in six endemic Macaca species on Sulawesi island
  1. Jason Cheok Kuan Leong (The University of Tokyo)
    Title: Do echinoderms have more derived molecular developmental programs than chordates? -introducing 'derivedness index' for degree of phenotypic evolution of embryos

The Young Researcher Award goes to:

  1. Tyler Philip Linderoth (University of Cambridge)
    Title: Structural mutations, antagonism, and differential use of multiple Y alleles shape sex determination in ecomorphs of an African crater lake cichlid
  1. Tirtha Das Banerjee (National University of Singapore)
    Title: Molecular mechanism underlying venation pattern is reused to pattern eyespot rings in Bicyclus anynana butterflies

Prof. Dr. Koichiro Tamura
Prof. Dr. Guojie Zhang
Dr. Daiqin Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Life is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

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12 pages, 3316 KiB  
Article
Karyotypical Confirmation of Natural Hybridization between Two Manatee Species, Trichechus manatus and Trichechus inunguis
by Edivaldo H. C. de Oliveira, Anderson J. B. Gomes, Alexandra F. Costa, Renata Emin-Lima, Cibele R. Bonvicino, Maria C. Viana, Laura M. A. Reis, Marcelo D. Vidal, Mirella V. G. Cavalcanti, Fernanda L. N. Attademo, Fábia O. Luna and Salvatore Siciliano
Life 2022, 12(5), 616; https://doi.org/10.3390/life12050616 - 20 Apr 2022
Cited by 7 | Viewed by 2373
Abstract
Two species of manatees are found in Northern Brazil—the Antillean manatee (Trichechus manatus), which is found along the coast from Florida to Northeastern Brazil, and the Amazonian manatee (Trichechus inunguis), endemic to the Amazon drainage basin. These species show [...] Read more.
Two species of manatees are found in Northern Brazil—the Antillean manatee (Trichechus manatus), which is found along the coast from Florida to Northeastern Brazil, and the Amazonian manatee (Trichechus inunguis), endemic to the Amazon drainage basin. These species show a sympatric distribution in the region of the Marajó Archipelago, an estuarine area surrounding the Amazon River mouth. There is evidence of the occurrence of interspecific hybrids in this area, based on mitochondrial DNA analyses, although the use of nuclear markers has not corroborated this proposal. Considering that these species show very distinct karyotypes, despite being closely related (2n = 48 in T. manatus and 2n = 56 in T. inunguis), hybrids would present distinct chromosome numbers. Based on this, we conducted cytogenetic analyses using classic and molecular techniques in three calves found stranded in the Marajó Island and Amapá coast. The results showed that one of them, morphologically classified as T. inunguis, presented the correspondent karyotype, with 2n = 56. However, the other two, which were phenotypically similar to T. manatus, showed 2n = 49. Despite the same diploid number, their G-banding patterns revealed some differences. The results of the distribution of some microsatellite sequences have also confirmed the heterozygosity of some chromosomal pairs in these two individuals. These results are the first indubitable confirmation of the occurrence of natural hybrids between T. manatus and T. inunguis, and also brings about some issues concerning the viability of hybrids, considering that these two individuals do not correspond to an F1 hybrid, but instead, both presented a possible F2 karyotype. Full article
(This article belongs to the Special Issue Selected Papers from The 2nd AsiaEvo Conference)
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Review

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13 pages, 1578 KiB  
Review
Distinguishing Evolutionary Conservation from Derivedness
by Jason Cheok Kuan Leong, Masahiro Uesaka and Naoki Irie
Life 2022, 12(3), 440; https://doi.org/10.3390/life12030440 - 17 Mar 2022
Cited by 1 | Viewed by 2575
Abstract
While the concept of “evolutionary conservation” has enabled biologists to explain many ancestral features and traits, it has also frequently been misused to evaluate the degree of changes from a common ancestor, or “derivedness”. We propose that the distinction of these two concepts [...] Read more.
While the concept of “evolutionary conservation” has enabled biologists to explain many ancestral features and traits, it has also frequently been misused to evaluate the degree of changes from a common ancestor, or “derivedness”. We propose that the distinction of these two concepts allows us to properly understand phenotypic and organismal evolution. From a methodological aspect, “conservation” mainly considers genes or traits which species have in common, while “derivedness” additionally covers those that are not commonly shared, such as novel or lost traits and genes to evaluate changes from the time of divergence from a common ancestor. Due to these differences, while conservation-oriented methods are effective in identifying ancestral features, they may be prone to underestimating the overall changes accumulated during the evolution of certain lineages. Herein, we describe our recently developed method, “transcriptomic derivedness index”, for estimating the phenotypic derivedness of embryos with a molecular approach using the whole-embryonic transcriptome as a phenotype. Although echinoderms are often considered as highly derived species, our analyses with this method showed that their embryos, at least at the transcriptomic level, may not be much more derived than those of chordates. We anticipate that the future development of derivedness-oriented methods could provide quantitative indicators for finding highly/lowly evolvable traits. Full article
(This article belongs to the Special Issue Selected Papers from The 2nd AsiaEvo Conference)
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