Cytogenetics of howler monkeys

Cytogenetic studies of howler monkeys show diploid numbers ranging from 2N = 43 in Alouatta seniculus to 2N = 58 in A. pigra with several interspecific chromosomal rearrangements such as translocations and inversions. Other remarkable genetic features are the multiple sex chromosome systems and the...

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Detalles Bibliográficos
Autores principales:	Mudry, Marta Dolores, Nieves, Mariela, Steinberg, Eliana Ruth
Publicado:	2015
Materias:	Chromosomal syntenies Cytogenetics Karyosystematics Multiple sex chromosome systems
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814939_v_n_p85_Mudry http://hdl.handle.net/20.500.12110/paper_97814939_v_n_p85_Mudry
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_97814939_v_n_p85_Mudry
record_format	dspace
spelling	paper:paper_97814939_v_n_p85_Mudry2023-06-08T16:37:53Z Cytogenetics of howler monkeys Mudry, Marta Dolores Nieves, Mariela Steinberg, Eliana Ruth Chromosomal syntenies Cytogenetics Karyosystematics Multiple sex chromosome systems Cytogenetic studies of howler monkeys show diploid numbers ranging from 2N = 43 in Alouatta seniculus to 2N = 58 in A. pigra with several interspecific chromosomal rearrangements such as translocations and inversions. Other remarkable genetic features are the multiple sex chromosome systems and the presence of microchromosomes. Multiple sexual systems are originated by Y-autosome translocations, resulting in the formation of trivalents X1X2Y in males of A. belzebul and A. palliata and quadrivalents X1X2Y1Y2 in males of A. seniculus, A. pigra, A. macconnelli, and A. caraya. Fluorescence in situ hybridization (FISH) analyses in the South American species have revealed that segments with homeology to human chromosomes #3 and #15 (synteny 3/15) are involved in these sexual systems. Different authors agreed with the assumption that these diverse sex chromosome systems share the same autosomal pair and the rearrangement may have occurred once. Recent cytogenetic characterization of A. pigra and A. palliata has shown that the autosomes involved in the translocation that formed the sex chromosome systems in the Mesoamerican and South American species are different. Two independent events of Y-autosome translocations might have led to different sexual systems. Together with the multiple autosomal rearrangements found in the genus, the howler monkey’s sex chromosome systems constitute an illustrative example of the possible chromosomal evolutionary mechanisms in Platyrrhini. © Springer Science+Business Media New York 2015. Fil:Mudry, M.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Nieves, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Steinberg, E.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814939_v_n_p85_Mudry http://hdl.handle.net/20.500.12110/paper_97814939_v_n_p85_Mudry
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chromosomal syntenies Cytogenetics Karyosystematics Multiple sex chromosome systems
spellingShingle	Chromosomal syntenies Cytogenetics Karyosystematics Multiple sex chromosome systems Mudry, Marta Dolores Nieves, Mariela Steinberg, Eliana Ruth Cytogenetics of howler monkeys
topic_facet	Chromosomal syntenies Cytogenetics Karyosystematics Multiple sex chromosome systems
description	Cytogenetic studies of howler monkeys show diploid numbers ranging from 2N = 43 in Alouatta seniculus to 2N = 58 in A. pigra with several interspecific chromosomal rearrangements such as translocations and inversions. Other remarkable genetic features are the multiple sex chromosome systems and the presence of microchromosomes. Multiple sexual systems are originated by Y-autosome translocations, resulting in the formation of trivalents X1X2Y in males of A. belzebul and A. palliata and quadrivalents X1X2Y1Y2 in males of A. seniculus, A. pigra, A. macconnelli, and A. caraya. Fluorescence in situ hybridization (FISH) analyses in the South American species have revealed that segments with homeology to human chromosomes #3 and #15 (synteny 3/15) are involved in these sexual systems. Different authors agreed with the assumption that these diverse sex chromosome systems share the same autosomal pair and the rearrangement may have occurred once. Recent cytogenetic characterization of A. pigra and A. palliata has shown that the autosomes involved in the translocation that formed the sex chromosome systems in the Mesoamerican and South American species are different. Two independent events of Y-autosome translocations might have led to different sexual systems. Together with the multiple autosomal rearrangements found in the genus, the howler monkey’s sex chromosome systems constitute an illustrative example of the possible chromosomal evolutionary mechanisms in Platyrrhini. © Springer Science+Business Media New York 2015.
author	Mudry, Marta Dolores Nieves, Mariela Steinberg, Eliana Ruth
author_facet	Mudry, Marta Dolores Nieves, Mariela Steinberg, Eliana Ruth
author_sort	Mudry, Marta Dolores
title	Cytogenetics of howler monkeys
title_short	Cytogenetics of howler monkeys
title_full	Cytogenetics of howler monkeys
title_fullStr	Cytogenetics of howler monkeys
title_full_unstemmed	Cytogenetics of howler monkeys
title_sort	cytogenetics of howler monkeys
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814939_v_n_p85_Mudry http://hdl.handle.net/20.500.12110/paper_97814939_v_n_p85_Mudry
work_keys_str_mv	AT mudrymartadolores cytogeneticsofhowlermonkeys AT nievesmariela cytogeneticsofhowlermonkeys AT steinbergelianaruth cytogeneticsofhowlermonkeys
_version_	1768544844066586624

Cytogenetics of howler monkeys

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