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  1. Article ; Online: Karyotypes of Manatees: New Insights into Hybrid Formation (

    Noronha, Renata C R / Almeida, Bruno R R / Chagas, Monique C S / Tavares, Flávia S / Cardoso, Adauto L / Bastos, Carlos E M C / Silva, Natalia K N / Klautau, Alex G C M / Luna, Fábia O / Attademo, Fernanda L N / Lima, Danielle S / Sabioni, Luiz A / Sampaio, Maria I C / Oliveira, Jairo Moura / Nascimento, Luís Adriano Santos do / Martins, Cesar / Vicari, Marcelo R / Nagamachi, Cleusa Y / Pieczarka, Julio C

    Genes

    2022  Volume 13, Issue 7

    Abstract: Great efforts have been made to preserve manatees. Recently, a hybrid zone was described ... ...

    Abstract Great efforts have been made to preserve manatees. Recently, a hybrid zone was described between
    MeSH term(s) Animals ; Estuaries ; Karyotype ; Trichechus/genetics ; Trichechus inunguis/genetics ; Trichechus manatus/genetics
    Language English
    Publishing date 2022-07-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13071263
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Karyotypes of Manatees: New Insights into Hybrid Formation (Trichechus inunguis × Trichechus m. manatus) in the Amazon Estuary

    Noronha, Renata C. R. / Almeida, Bruno R. R. / Chagas, Monique C. S. / Tavares, Flávia S. / Cardoso, Adauto L. / Bastos, Carlos E. M. C. / Silva, Natalia K. N. / Klautau, Alex G. C. M. / Luna, Fábia O. / Attademo, Fernanda L. N. / Lima, Danielle S. / Sabioni, Luiz A. / Sampaio, Maria I. C. / Oliveira, Jairo Moura / Nascimento, Luís Adriano Santos do / Martins, Cesar / Vicari, Marcelo R. / Nagamachi, Cleusa Y. / Pieczarka, Julio C.

    Genes. 2022 July 16, v. 13, no. 7

    2022  

    Abstract: Great efforts have been made to preserve manatees. Recently, a hybrid zone was described between Trichechus inunguis (TIN) and the Trichechus manatus manatus (TMM) in the Amazon estuary. Cytogenetic data on these sirenians are limited, despite being ... ...

    Abstract Great efforts have been made to preserve manatees. Recently, a hybrid zone was described between Trichechus inunguis (TIN) and the Trichechus manatus manatus (TMM) in the Amazon estuary. Cytogenetic data on these sirenians are limited, despite being fundamental to understanding the hybridization/introgression dynamics and genomic organization in Trichechus. We analyzed the karyotype of TMM, TIN, and two hybrid specimens (“Poque” and “Vitor”) by classical and molecular cytogenetics. G-band analysis revealed that TMM (2n = 48) and TIN (2n = 56) diverge by at least six Robertsonian translocations and a pericentric inversion. Hybrids had 2n = 50, however, with Autosomal Fundamental Number (FNA) = 88 in “Poque” and FNA = 74 in “Vitor”, and chromosomal distinct pairs in heterozygous; additionally, “Vitor” exhibited heteromorphisms and chromosomes whose pairs could not be determined. The U2 snDNA and Histone H3 multi genes are distributed in small clusters along TIN and TMM chromosomes and have transposable Keno and Helitron elements (TEs) in their sequences. The different karyotypes observed among manatee hybrids may indicate that they represent different generations formed by crossing between fertile hybrids and TIN. On the other hand, it is also possible that all hybrids recorded represent F1 and the observed karyotype differences must result from mechanisms of elimination.
    Keywords Trichechus inunguis ; Trichechus manatus ; estuaries ; heterozygosity ; histones ; hybrids ; introgression ; karyotyping ; nucleotide sequences ; pericentric inversion
    Language English
    Dates of publication 2022-0716
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2527218-4
    ISSN 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13071263
    Database NAL-Catalogue (AGRICOLA)

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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