Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae
Abstract Lycosa is one of the most speciose genera in Lycosidae, including species with different sexual chromosome systems (SCS). We carried out cytogenetic analyses in three species of Lycosa, revealing that L. erythrognatha and L. sericovittata share 2n ♂ = 22 and SCS X1X20 while L. gr. nordenskj...
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Sociedade Brasileira de Genética
2022-01-01
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| Series: | Genetics and Molecular Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572022000100202&lng=en&tlng=en |
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| author | Analiza Fernanda Cavenagh Matheus Pires Rincão Felipe Cordeiro Dias Antonio Domingos Brescovit Ana Lúcia Dias |
| author_facet | Analiza Fernanda Cavenagh Matheus Pires Rincão Felipe Cordeiro Dias Antonio Domingos Brescovit Ana Lúcia Dias |
| author_sort | Analiza Fernanda Cavenagh |
| collection | DOAJ |
| description | Abstract Lycosa is one of the most speciose genera in Lycosidae, including species with different sexual chromosome systems (SCS). We carried out cytogenetic analyses in three species of Lycosa, revealing that L. erythrognatha and L. sericovittata share 2n ♂ = 22 and SCS X1X20 while L. gr. nordenskjoldi presents 2n ♂ = 19 and SCS XO, composed only of acrocentric chromosomes. All species shared pericentromeric heterochromatin. Nonetheless, one specimen of L. sericovittata carried two chromosomes with terminal heterochromatin and L. gr. nordenskjoldi showed four chromosomes with interstitial heterochromatin plus another chromosome with terminal C-bands. The pericentromeric heterochromatin of all species as well as the terminal heterochromatic blocks in L. sericovittata were CMA3+. The 18S rDNA sites varied in number and type of bearing chromosomes both at inter and intrapopulational levels, with the highest variation in L. gr. nordenskjoldi. These differences may be related to gene dispersal due to the influence of transposition elements and translocation events. Despite these variations, all species shared ribosomal sites in pair 5. This study demonstrated intra and interspecific chromosomal variability of Lycosa, suggesting that chromosomal rearrangements are related to the diversification of diploid number and SCS in this group of spiders. |
| first_indexed | 2024-12-23T14:52:38Z |
| format | Article |
| id | doaj.art-cb938ef916ad41489300d6b0b1323b95 |
| institution | Directory Open Access Journal |
| issn | 1678-4685 |
| language | English |
| last_indexed | 2024-12-23T14:52:38Z |
| publishDate | 2022-01-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-cb938ef916ad41489300d6b0b1323b952022-12-21T17:42:54ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1678-46852022-01-0145110.1590/1678-4685-gmb-2020-0440Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in LycosinaeAnaliza Fernanda Cavenaghhttps://orcid.org/0000-0002-8186-9263Matheus Pires Rincãohttps://orcid.org/0000-0003-2189-1546Felipe Cordeiro Diashttps://orcid.org/0000-0002-0919-2649Antonio Domingos Brescovithttps://orcid.org/0000-0002-1511-5324Ana Lúcia Diashttps://orcid.org/0000-0002-9246-4018Abstract Lycosa is one of the most speciose genera in Lycosidae, including species with different sexual chromosome systems (SCS). We carried out cytogenetic analyses in three species of Lycosa, revealing that L. erythrognatha and L. sericovittata share 2n ♂ = 22 and SCS X1X20 while L. gr. nordenskjoldi presents 2n ♂ = 19 and SCS XO, composed only of acrocentric chromosomes. All species shared pericentromeric heterochromatin. Nonetheless, one specimen of L. sericovittata carried two chromosomes with terminal heterochromatin and L. gr. nordenskjoldi showed four chromosomes with interstitial heterochromatin plus another chromosome with terminal C-bands. The pericentromeric heterochromatin of all species as well as the terminal heterochromatic blocks in L. sericovittata were CMA3+. The 18S rDNA sites varied in number and type of bearing chromosomes both at inter and intrapopulational levels, with the highest variation in L. gr. nordenskjoldi. These differences may be related to gene dispersal due to the influence of transposition elements and translocation events. Despite these variations, all species shared ribosomal sites in pair 5. This study demonstrated intra and interspecific chromosomal variability of Lycosa, suggesting that chromosomal rearrangements are related to the diversification of diploid number and SCS in this group of spiders.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572022000100202&lng=en&tlng=enFISHheterochromatinrDNAsex chromosomesspiders |
| spellingShingle | Analiza Fernanda Cavenagh Matheus Pires Rincão Felipe Cordeiro Dias Antonio Domingos Brescovit Ana Lúcia Dias Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae Genetics and Molecular Biology FISH heterochromatin rDNA sex chromosomes spiders |
| title | Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae |
| title_full | Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae |
| title_fullStr | Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae |
| title_full_unstemmed | Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae |
| title_short | Chromosomal diversity in three species of Lycosa Latreille, 1804 (Araneae, Lycosidae): Inferences on diversification of diploid number and sexual chromosome systems in Lycosinae |
| title_sort | chromosomal diversity in three species of lycosa latreille 1804 araneae lycosidae inferences on diversification of diploid number and sexual chromosome systems in lycosinae |
| topic | FISH heterochromatin rDNA sex chromosomes spiders |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572022000100202&lng=en&tlng=en |
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