Cargando…

Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species

Abstract. Morphological and chromosomal characteristics of a number of unionid freshwater mussels were studied from northeastern Thailand. Karyotypes of eight species from seven genera (Chamberlainia, Ensidens, Hyriopsis, Physunio, Pseudodon, Scabies and Trapezoideus) were examined. Six species poss...

Descripción completa

Detalles Bibliográficos
Autores principales: Kongim, Bangon, Sutcharit, Chirasak, Panha, Somsak
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4525026/
https://www.ncbi.nlm.nih.gov/pubmed/26261434
http://dx.doi.org/10.3897/zookeys.514.8977
_version_ 1782384265841868800
author Kongim, Bangon
Sutcharit, Chirasak
Panha, Somsak
author_facet Kongim, Bangon
Sutcharit, Chirasak
Panha, Somsak
author_sort Kongim, Bangon
collection PubMed
description Abstract. Morphological and chromosomal characteristics of a number of unionid freshwater mussels were studied from northeastern Thailand. Karyotypes of eight species from seven genera (Chamberlainia, Ensidens, Hyriopsis, Physunio, Pseudodon, Scabies and Trapezoideus) were examined. Six species possess 2n = 38 karyotypes, whereas Scabies crispata and an unidentified Scabies sp. lack three small chromosome pairs, giving a diploid number of 32. Moreover, the karyotypes of the unidentified Scabies differ from Scabies crispata as it exhibits a telocentric chromosome pair (6m + 7sm + 2st + 1t). Most of the conchological characters also differ between the two species – adult size, colour pattern, muscle scars, pseudocardinal and lateral teeth. The name Scabies songkramensis sp. n. is proposed for the unidentified species, and its description is included in this paper. Interestingly, seven species contain mostly bi-armed chromosomes, but only the mud-dweller in stagnant water, Ensidens ingallsianus, contains predominantly five telocentric pairs. In addition, the marker chromosome characteristics of an unbalanced long arm, twisted centromere, a wider angle 180° arrangement, a twisted arm and telomeric end union reported in this study are described for the first time for unionid mussels.
format Online
Article
Text
id pubmed-4525026
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Pensoft Publishers
record_format MEDLINE/PubMed
spelling pubmed-45250262015-08-10 Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species Kongim, Bangon Sutcharit, Chirasak Panha, Somsak Zookeys Research Article Abstract. Morphological and chromosomal characteristics of a number of unionid freshwater mussels were studied from northeastern Thailand. Karyotypes of eight species from seven genera (Chamberlainia, Ensidens, Hyriopsis, Physunio, Pseudodon, Scabies and Trapezoideus) were examined. Six species possess 2n = 38 karyotypes, whereas Scabies crispata and an unidentified Scabies sp. lack three small chromosome pairs, giving a diploid number of 32. Moreover, the karyotypes of the unidentified Scabies differ from Scabies crispata as it exhibits a telocentric chromosome pair (6m + 7sm + 2st + 1t). Most of the conchological characters also differ between the two species – adult size, colour pattern, muscle scars, pseudocardinal and lateral teeth. The name Scabies songkramensis sp. n. is proposed for the unidentified species, and its description is included in this paper. Interestingly, seven species contain mostly bi-armed chromosomes, but only the mud-dweller in stagnant water, Ensidens ingallsianus, contains predominantly five telocentric pairs. In addition, the marker chromosome characteristics of an unbalanced long arm, twisted centromere, a wider angle 180° arrangement, a twisted arm and telomeric end union reported in this study are described for the first time for unionid mussels. Pensoft Publishers 2015-07-27 /pmc/articles/PMC4525026/ /pubmed/26261434 http://dx.doi.org/10.3897/zookeys.514.8977 Text en Bangon Kongim, Chirasak Sutcharit, Somsak Panha http://creativecommons.org/licenses/by/4.0 This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kongim, Bangon
Sutcharit, Chirasak
Panha, Somsak
Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title_full Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title_fullStr Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title_full_unstemmed Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title_short Cytotaxonomy of unionid freshwater mussels (Unionoida, Unionidae) from northeastern Thailand with description of a new species
title_sort cytotaxonomy of unionid freshwater mussels (unionoida, unionidae) from northeastern thailand with description of a new species
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4525026/
https://www.ncbi.nlm.nih.gov/pubmed/26261434
http://dx.doi.org/10.3897/zookeys.514.8977
work_keys_str_mv AT kongimbangon cytotaxonomyofunionidfreshwatermusselsunionoidaunionidaefromnortheasternthailandwithdescriptionofanewspecies
AT sutcharitchirasak cytotaxonomyofunionidfreshwatermusselsunionoidaunionidaefromnortheasternthailandwithdescriptionofanewspecies
AT panhasomsak cytotaxonomyofunionidfreshwatermusselsunionoidaunionidaefromnortheasternthailandwithdescriptionofanewspecies