Chromosomal polymorphism in two species of Hypancistrus (Siluriformes: Loricariidae): an integrative approach for understanding their biodiversity
Structural chromosome changes are widely described in different vertebrate groups and generate genetic, phenotypic and behavioral diversity. During the evolution of loricariids, several rearrangements (fissions, fusions, inversions) seem to have occurred. Hypancistrus, tribe Ancistrini, are highly d...
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| Veröffentlicht in: | Genetica 2014-04, Vol.142 (2), p.127-139 |
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| creator | da Silva, Maelin Ribeiro, Emanuell D Matoso, Daniele A Sousa, Leandro M Hrbek, Tomas Py-Daniel, Lucia Rapp Feldberg, Eliana |
| description | Structural chromosome changes are widely described in different vertebrate groups and generate genetic, phenotypic and behavioral diversity. During the evolution of loricariids, several rearrangements (fissions, fusions, inversions) seem to have occurred. Hypancistrus, tribe Ancistrini, are highly demanded for fishkeeping around the world. In this tribe, the diploid chromosome number 2n = 52 is considered a synapomorphy, and paracentric-type inversions appear to be involved in the chromosomal evolution of the tribe. The present study investigated the karyotypes of H. zebra and H. cf. debilittera using cytogenetic, classical and molecular tools, as well as DNA barcoding. Data reveal that, although diploid number in both species corroborates the proposed synapomorphy for the tribe, there is a complex karyotype dynamics, reflected in the intense chromosomal polymorphism, resulting from rearrangements involving ribosomal regions (5S and 18S rDNA), which are suggested to be paracentric inversions. Besides, DNA barcode confirms reciprocal monophyletism between the species, validating the existence of two species, only. This scenario, coupled with genomic instability caused by exogenous sequences such as Rex-3 retrotransposons and the species’ sedentary lifestyle, which helps the fast polymorphism fixation, may reflect different phenotypic color patterns in natural populations, as observed in H. cf. debilittera. |
| doi_str_mv | 10.1007/s10709-014-9760-y |
| format | Article |
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During the evolution of loricariids, several rearrangements (fissions, fusions, inversions) seem to have occurred. Hypancistrus, tribe Ancistrini, are highly demanded for fishkeeping around the world. In this tribe, the diploid chromosome number 2n = 52 is considered a synapomorphy, and paracentric-type inversions appear to be involved in the chromosomal evolution of the tribe. The present study investigated the karyotypes of H. zebra and H. cf. debilittera using cytogenetic, classical and molecular tools, as well as DNA barcoding. Data reveal that, although diploid number in both species corroborates the proposed synapomorphy for the tribe, there is a complex karyotype dynamics, reflected in the intense chromosomal polymorphism, resulting from rearrangements involving ribosomal regions (5S and 18S rDNA), which are suggested to be paracentric inversions. Besides, DNA barcode confirms reciprocal monophyletism between the species, validating the existence of two species, only. This scenario, coupled with genomic instability caused by exogenous sequences such as Rex-3 retrotransposons and the species’ sedentary lifestyle, which helps the fast polymorphism fixation, may reflect different phenotypic color patterns in natural populations, as observed in H. cf. debilittera.</description><identifier>ISSN: 0016-6707</identifier><identifier>EISSN: 1573-6857</identifier><identifier>DOI: 10.1007/s10709-014-9760-y</identifier><identifier>PMID: 24682750</identifier><language>eng</language><publisher>Cham: Springer-Verlag</publisher><subject>Animal Genetics and Genomics ; Animals ; biodiversity ; Biomedical and Life Sciences ; Catfishes - classification ; Catfishes - genetics ; Chromosome Inversion ; chromosome number ; chromosomes ; Chromosomes - genetics ; color ; Cytogenetic Analysis ; Deoxyribonucleic acid ; Diploidy ; DNA ; DNA barcoding ; DNA Barcoding, Taxonomic ; evolution ; Evolution, Molecular ; Evolutionary Biology ; Female ; Genes, rRNA ; Genetic Variation ; Human Genetics ; Karyotype ; Karyotypes ; karyotyping ; Life Sciences ; lifestyle ; Loricariidae ; Male ; Microbial Genetics and Genomics ; Natural populations ; Phylogeny ; Plant Genetics and Genomics ; retrotransposons ; ribosomal DNA ; Sedentary species ; Siluriformes</subject><ispartof>Genetica, 2014-04, Vol.142 (2), p.127-139</ispartof><rights>Springer International Publishing Switzerland 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-9aac84f698fb5174f1dee2a51ddddaca19dea6e61310fc71f46b91f00750ecc63</citedby><cites>FETCH-LOGICAL-c429t-9aac84f698fb5174f1dee2a51ddddaca19dea6e61310fc71f46b91f00750ecc63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10709-014-9760-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10709-014-9760-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24682750$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>da Silva, Maelin</creatorcontrib><creatorcontrib>Ribeiro, Emanuell D</creatorcontrib><creatorcontrib>Matoso, Daniele A</creatorcontrib><creatorcontrib>Sousa, Leandro M</creatorcontrib><creatorcontrib>Hrbek, Tomas</creatorcontrib><creatorcontrib>Py-Daniel, Lucia Rapp</creatorcontrib><creatorcontrib>Feldberg, Eliana</creatorcontrib><title>Chromosomal polymorphism in two species of Hypancistrus (Siluriformes: Loricariidae): an integrative approach for understanding their biodiversity</title><title>Genetica</title><addtitle>Genetica</addtitle><addtitle>Genetica</addtitle><description>Structural chromosome changes are widely described in different vertebrate groups and generate genetic, phenotypic and behavioral diversity. During the evolution of loricariids, several rearrangements (fissions, fusions, inversions) seem to have occurred. Hypancistrus, tribe Ancistrini, are highly demanded for fishkeeping around the world. In this tribe, the diploid chromosome number 2n = 52 is considered a synapomorphy, and paracentric-type inversions appear to be involved in the chromosomal evolution of the tribe. The present study investigated the karyotypes of H. zebra and H. cf. debilittera using cytogenetic, classical and molecular tools, as well as DNA barcoding. Data reveal that, although diploid number in both species corroborates the proposed synapomorphy for the tribe, there is a complex karyotype dynamics, reflected in the intense chromosomal polymorphism, resulting from rearrangements involving ribosomal regions (5S and 18S rDNA), which are suggested to be paracentric inversions. Besides, DNA barcode confirms reciprocal monophyletism between the species, validating the existence of two species, only. This scenario, coupled with genomic instability caused by exogenous sequences such as Rex-3 retrotransposons and the species’ sedentary lifestyle, which helps the fast polymorphism fixation, may reflect different phenotypic color patterns in natural populations, as observed in H. cf. debilittera.</description><subject>Animal Genetics and Genomics</subject><subject>Animals</subject><subject>biodiversity</subject><subject>Biomedical and Life Sciences</subject><subject>Catfishes - classification</subject><subject>Catfishes - genetics</subject><subject>Chromosome Inversion</subject><subject>chromosome number</subject><subject>chromosomes</subject><subject>Chromosomes - genetics</subject><subject>color</subject><subject>Cytogenetic Analysis</subject><subject>Deoxyribonucleic acid</subject><subject>Diploidy</subject><subject>DNA</subject><subject>DNA barcoding</subject><subject>DNA Barcoding, Taxonomic</subject><subject>evolution</subject><subject>Evolution, Molecular</subject><subject>Evolutionary Biology</subject><subject>Female</subject><subject>Genes, rRNA</subject><subject>Genetic Variation</subject><subject>Human Genetics</subject><subject>Karyotype</subject><subject>Karyotypes</subject><subject>karyotyping</subject><subject>Life Sciences</subject><subject>lifestyle</subject><subject>Loricariidae</subject><subject>Male</subject><subject>Microbial Genetics and Genomics</subject><subject>Natural populations</subject><subject>Phylogeny</subject><subject>Plant Genetics and Genomics</subject><subject>retrotransposons</subject><subject>ribosomal DNA</subject><subject>Sedentary 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biodiversity</atitle><jtitle>Genetica</jtitle><stitle>Genetica</stitle><addtitle>Genetica</addtitle><date>2014-04-01</date><risdate>2014</risdate><volume>142</volume><issue>2</issue><spage>127</spage><epage>139</epage><pages>127-139</pages><issn>0016-6707</issn><eissn>1573-6857</eissn><abstract>Structural chromosome changes are widely described in different vertebrate groups and generate genetic, phenotypic and behavioral diversity. During the evolution of loricariids, several rearrangements (fissions, fusions, inversions) seem to have occurred. Hypancistrus, tribe Ancistrini, are highly demanded for fishkeeping around the world. In this tribe, the diploid chromosome number 2n = 52 is considered a synapomorphy, and paracentric-type inversions appear to be involved in the chromosomal evolution of the tribe. The present study investigated the karyotypes of H. zebra and H. cf. debilittera using cytogenetic, classical and molecular tools, as well as DNA barcoding. Data reveal that, although diploid number in both species corroborates the proposed synapomorphy for the tribe, there is a complex karyotype dynamics, reflected in the intense chromosomal polymorphism, resulting from rearrangements involving ribosomal regions (5S and 18S rDNA), which are suggested to be paracentric inversions. Besides, DNA barcode confirms reciprocal monophyletism between the species, validating the existence of two species, only. This scenario, coupled with genomic instability caused by exogenous sequences such as Rex-3 retrotransposons and the species’ sedentary lifestyle, which helps the fast polymorphism fixation, may reflect different phenotypic color patterns in natural populations, as observed in H. cf. debilittera.</abstract><cop>Cham</cop><pub>Springer-Verlag</pub><pmid>24682750</pmid><doi>10.1007/s10709-014-9760-y</doi><tpages>13</tpages></addata></record> |
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| ispartof | Genetica, 2014-04, Vol.142 (2), p.127-139 |
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| source | MEDLINE; SpringerNature Complete Journals |
| subjects | Animal Genetics and Genomics Animals biodiversity Biomedical and Life Sciences Catfishes - classification Catfishes - genetics Chromosome Inversion chromosome number chromosomes Chromosomes - genetics color Cytogenetic Analysis Deoxyribonucleic acid Diploidy DNA DNA barcoding DNA Barcoding, Taxonomic evolution Evolution, Molecular Evolutionary Biology Female Genes, rRNA Genetic Variation Human Genetics Karyotype Karyotypes karyotyping Life Sciences lifestyle Loricariidae Male Microbial Genetics and Genomics Natural populations Phylogeny Plant Genetics and Genomics retrotransposons ribosomal DNA Sedentary species Siluriformes |
| title | Chromosomal polymorphism in two species of Hypancistrus (Siluriformes: Loricariidae): an integrative approach for understanding their biodiversity |
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