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Relevant bibliographies by topics / Evolution of gonosomes

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Academic literature on the topic 'Evolution of gonosomes'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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Journal articles on the topic "Evolution of gonosomes"

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Gil, Marta, and Fran Ramil. "Hydroids (Cnidaria, Hydrozoa) from the Vema and Valdivia seamounts (SE Atlantic)." European Journal of Taxonomy 758 (July 7, 2021): 49–96. http://dx.doi.org/10.5852/ejt.2021.758.1425.

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In this report, we analyse the benthic hydroids collected on the Vema and Valdivia seamounts during a survey conducted in 2015 in the SEAFO Convention Area, focused on mapping and analysing the occurrence and abundance of benthopelagic fish and vulnerable marine ecosystem (VMEs) indicators on selected Southeast Atlantic seamounts. A total of 27 hydroid species were identified, of which 22 belong to Leptothecata and only five to Anthoathecata. Monostaechoides gen. nov. was erected within the family Halopterididae to accommodate Plumularia providentiae Jarvis, 1922, and a new species, Monotheca bergstadi sp. nov., is also described. Campanularia africana is recorded for the first time from the Atlantic Ocean, and the Northeast Atlantic species Amphinema biscayana, Stegopoma giganteum and Clytia gigantea are also recorded from the South Atlantic. Three species were identified to the genus level only, due to the absence of their gonosomes. None of the reported species are endemic, and the hydroid community is clearly dominated by species with a wide geographical distribution in the three major oceans. Only Monotheca bergstadi sp. nov. presently has its distribution restricted to the Vema Seamount and the South African coast.

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Absalamov, Akmal T., and Utkir A. Rozikov. "The Dynamics of Gonosomal Evolution Operators." Journal of Applied Nonlinear Dynamics 9, no. 2 (June 2020): 247–57. http://dx.doi.org/10.5890/jand.2020.06.007.

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Rozikov, Utkir A., and Richard Varro. "Dynamical Systems Generated by a Gonosomal Evolution Operator." Interdisciplinary journal of Discontinuity, Nonlinearity and Complexity 5, no. 2 (June 2016): 173–85. http://dx.doi.org/10.5890/dnc.2016.06.007.

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Absalamov, Akmal T. "The Global Attractiveness of the Fixed Point of a Gonosomal Evolution Operator." Interdisciplinary journal of Discontinuity, Nonlinearity, and Complexity 10, no. 1 (March 2021): 143–49. http://dx.doi.org/10.5890/dnc.2021.03.010.

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5

GALEA, HORIA R., CRISTINA G. DI CAMILLO, and DAVIDE MAGGIONI. "An integrative study of Callicarpa gracilis Fewkes, 1881 and Aglaophenia trifida L. Agassiz, 1862, with notes on some hydroids (Cnidaria: Hydrozoa) from French Guiana." Zootaxa 4926, no. 3 (February 9, 2021): 301–41. http://dx.doi.org/10.11646/zootaxa.4926.3.1.

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Among the thecate hydroids brought back by the Proteus-Guyane 2017 expedition of the Muséum national d’histoire naturelle of Paris, France, from French Guiana, two interesting species are reported upon. The plumulariid Callicarpa gracilis Fewkes, 1881, known so far from the type specimen only, is comprehensively redescribed 140 years after its original description. It adopts two different morphotypes with respect to both its tropho- and gonosome, forming either simple or ramified colonies, with either structurally-complex or rudimentary phylactocarps, respectively. Taxonomic notes on the genera Callicarpa Fewkes, 1881 and Hippurella Allman, 1877 are provided in light of their intricate history of origin and fate, together with the provisional resurrection of Antomma Stechow, 1919, as an allied genus of the former. The aglaopheniid Aglaophenia trifida L. Agassiz, 1862, whose gonosome was only partly documented to date, is redescribed thoroughly based on specimens bearing male and female corbulae. Scanning electron microscopy and molecular data were also used to document both species. A checklist of the thecate hydroids from French Guiana gathered during Proteus-Guyane 2017 and Guyane 2014 expeditions is provided as an appendix, together with brief notes on some species. Not dealing with the present study, but taking advantage of it, a new name, Antennella billardi Galea, nom. nov., is proposed as a replacement name for Plumularia balei Billard, 1911, which is a permanently invalid junior primary homonym of P. balei Bartlett, 1907.

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Lisachov, Artem P., Katerina V. Tishakova, Svetlana A. Romanenko, Anna S. Molodtseva, Dmitry Yu Prokopov, Jorge C. Pereira, Malcolm A. Ferguson-Smith, Pavel M. Borodin, and Vladimir A. Trifonov. "Whole-chromosome fusions in the karyotype evolution of Sceloporus (Iguania, Reptilia) are more frequent in sex chromosomes than autosomes." Philosophical Transactions of the Royal Society B: Biological Sciences 376, no. 1833 (July 26, 2021): 20200099. http://dx.doi.org/10.1098/rstb.2020.0099.

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Whole-chromosome fusions play a major role in the karyotypic evolution of reptiles. It has been suggested that certain chromosomes tend to fuse with sex chromosomes more frequently than others. However, the comparative genomic synteny data are too scarce to draw strong conclusions. We obtained and sequenced chromosome-specific DNA pools of Sceloporus malachiticus , an iguanian species which has experienced many chromosome fusions. We found that four of seven lineage-specific fusions involved sex chromosomes, and that certain syntenic blocks which constitute the sex chromosomes, such as the homologues of the Anolis carolinensis chromosomes 11 and 16, are repeatedly involved in sex chromosome formation in different squamate species. To test the hypothesis that the karyotypic shift could be associated with changes in recombination patterns, we performed a synaptonemal complex analysis in this species and in Sceloporus variabilis (2 n = 34). It revealed that the sex chromosomes in S. malachiticus had two distal pseudoautosomal regions and a medial differentiated region. We found that multiple fusions little affected the recombination rate in S. malachiticus . Our data confirm more frequent involvement of certain chromosomes in sex chromosome formation, but do not reveal a connection between the gonosome–autosome fusions and the evolution of recombination rate. This article is part of the theme issue ‘Challenging the paradigm in sex chromosome evolution: empirical and theoretical insights with a focus on vertebrates (Part II)’.

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Genest, Fernande B., Pierre Morisset, and Robert P. Patenaude. "Chromosomes du Lynx roux, Lynx rufus." Canadian Journal of Zoology 65, no. 12 (December 1, 1987): 3192–96. http://dx.doi.org/10.1139/z87-479.

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The chromosomes of the bobcat (Lynx rufus Schreber) were studied in five males and one female. Karyotypes were obtained both from fibroblast and lymphocyte cultures. The karyotype (2n = 38) includes three morphological types: metacentrics (5 pairs), submetacentrics (11 pairs), and acrocentrics (2 pairs). The gonosomic formula is of the XY-type and both sex chromosomes are submetacentric. The X can be safely identified with G-bands, but not with standard staining techniques. The Y is the smallest chromosome within the complement. In general, the karyotype of the bobcat is similar to karyotypes of other Felidae described in the literature.

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Song, Xikun, Cinzia Gravili, Bernhard Ruthensteiner, Mingxin Lyu, and Jianjun Wang. "Incongruent cladistics reveal a new hydrozoan genus (Cnidaria : Sertularellidae) endemic to the eastern and western coasts of the North Pacific Ocean." Invertebrate Systematics 32, no. 5 (2018): 1083. http://dx.doi.org/10.1071/is17070.

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Molecular phylogenetics provides objective references for zoological systematics which sometimes are inconsistent with morphological data. This applies particularly for some primitive phyla such as Cnidaria. The marine hydrozoan Symplectoscyphus turgidus (Sertularellidae) is a recent questionable case reported to occupy an unexpected phylogenetic position and suggested to belong to a new genus. However, its position, based on a single Californian specimen, seemed doubtful. Here we contributed 16S, 18S and 28S rRNA data of another morphologically related species from the Yellow Sea, forming a monophyletic clade with the Californian sample, confirming the clade stability. Further integrative analyses support describing this clade as the new genus Xingyurella, gen. nov., and lead to a taxonomic revision of species characterised by three hydrothecal marginal teeth and strong gonothecal spines. This resulted in a new species and three new combinations: Xingyurella xingyuarum, sp. nov., X. gotoi, comb. nov., X. pedrensis, comb. nov. and X. turgida, comb. nov. Future investigations are required to understand the evolution and speciation involved in the transoceanic distribution pattern of Xingyurella. The approach used herein for dealing with non-monophyletic conditions may be indicative for further studies by integrating trophosome and gonosome traits for Sertularellidae and other hydrozoans. http://zoobank.org/urn:lsid:zoobank.org:pub:E99F8777-8E31-4C4B-A065-71C71371EEBC.

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OZOUF-COSTAZ, CATHERINE, JÜRGEN BRANDT, CORNELIA KÖRTING, EVA PISANO, CÉLINE BONILLO, JEAN-PIERRE COUTANCEAU, and JEAN-NICOLAS VOLFF. "Genome dynamics and chromosomal localization of the non-LTR retrotransposons Rex1 and Rex3 in Antarctic fish." Antarctic Science 16, no. 1 (February 27, 2004): 51–57. http://dx.doi.org/10.1017/s0954102004001816.

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The non-long terminal repeat retrotransposons Rex1 and Rex3 were identified in 13 species of Antarctic fishes from five families of the suborder Notothenioidei. Partial reverse transcriptase gene sequences were characterized for Notothenia coriiceps, Trematomus newnesi and Dissostichus mawsoni (Nototheniidae), and Gymnodraco acuticeps (Bathydraconidae). Rex1 and Rex3 both formed a notothenioid-specific monophyletic group compared to the corresponding elements from other fishes. They globally evolved under purifying selection, showing their activity during notothenioid evolution. Fluorescence in situ hybridization analysis of the chromosomal distribution of Rex1 and Rex3 was performed for several notothenioid fish species. Rex1 was generally less abundant than Rex3, which was widely scattered on the chromosomes with more intense hybridization patterns in some specific zones. Particularly, Rex3 accumulated in Chionodraco hamatus in pericentromeric areas, short arms of some pairs as well as in an intercalary band in the long arm of the Y chromosome similarly to a previously described DNA transposon. Such pattern similarities suggest the presence of autosomal and gonosomal regions of preferential accumulation for different types of repeated elements in notothenioid genomes. To the best of our knowledge, this report is the first description and analysis of retrotransposable elements in Antarctic fish genomes.

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10

Kalscheuer, V., A. P. Singh, I. Nanda, K. Sperling, and H. Neitzel. "Evolution of the gonosomal heterochromatin of Microtus agrestis: rapid amplification of a large, multimeric, repeat unit containing a 3.0-kb (GATA)n-positive, middle repetitive element." Cytogenetic and Genome Research 73, no. 3 (1996): 171–78. http://dx.doi.org/10.1159/000134333.

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Dissertations / Theses on the topic "Evolution of gonosomes"

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Kuldanová, Kateřina. "Srovnání evolučních rychlostí gonozomálních a autozomálních genů u plazů." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-368040.

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According to the "faster-X effect", X-linked genes and Z-linked genes evolve more quickly than autosomal genes. This theory is one of the currently intensively studied topics in evolutionary research. However, performing high quality tests is difficult because the results are influenced by several factors - the effective size of the population of the gonosome, sexual selection, the dependency of mutation rate and selection on sex, and the mechanism of dosage compensation. Conservation of genes and possible differences between rates of evolution of autosomes also play a role and not all studies take this fact into account. This study shows some of the difficulties of paired comparisons of dN/dS ratios traditionally used to test faster-X or faster-Z effects and introduces the basis of a new method of comparison of the rate of evolution (CREC) based on relative genetic distances between three species. The CREC method reduces the influence of conservation of genes on results and is more applicable for testing faster-X or faster Z effects in such species where two species without homologic gonosomes can be found for comparison. In means of the development of this method, the faster-Z effect was tested on a dataset of 9 autosomal and 13 Z-linked genes in the six-striped long-tailed lizard (Takydromus...

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Book chapters on the topic "Evolution of gonosomes"

1

"Dynamical systems generated by a gonosomal evolution operator." In Population Dynamics, 361–78. WORLD SCIENTIFIC, 2020. http://dx.doi.org/10.1142/9789811211232_0010.

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