2014
DOI: 10.1186/1471-2148-14-40
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The role of chromosome variation in the speciation of the red brocket deer complex: the study of reproductive isolation in females

Abstract: BackgroundThe red brocket deer, Mazama americana, has at least six distinct karyotypes in different regions of South America that suggest the existence of various species that are today all referred to as M. americana. From an evolutionary perspective, the red brockets are a relatively recent clade that has gone through intense diversification. This study sought to prove the existence of post-zygotic reproductive isolation in deer offspring between distinct chromosome lineages. To achieve this, inter-cytotype … Show more

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Cited by 33 publications
(37 citation statements)
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References 64 publications
(90 reference statements)
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“…The genus Mazama , is known to be the most complex [1,2] and is separated into two clades, the gray ( M. gouazoubira and M. nemorivaga ) and the red Mazama ( M. americana, M. bororo and M. nana ) [3]. In the red clade, the species M. americana has recently been considered a complex of cryptic species, because different cytotypes exist in different regions of Brazil [4] and different degrees of reproductive isolation exist between these cytotypes [5]. Regarding the gray clade, phylogenetic analyses based on mtDNA, cytochrome b (Cyt b ) and cytochrome c oxidase subunit II (COX II) have shown significant genetic differences, not only between red and gray Mazama , but also between M. gouazoubira and M. nemorivaga , and even among individuals within the species studied [3,6,7].…”
Section: Introductionmentioning
confidence: 99%
“…The genus Mazama , is known to be the most complex [1,2] and is separated into two clades, the gray ( M. gouazoubira and M. nemorivaga ) and the red Mazama ( M. americana, M. bororo and M. nana ) [3]. In the red clade, the species M. americana has recently been considered a complex of cryptic species, because different cytotypes exist in different regions of Brazil [4] and different degrees of reproductive isolation exist between these cytotypes [5]. Regarding the gray clade, phylogenetic analyses based on mtDNA, cytochrome b (Cyt b ) and cytochrome c oxidase subunit II (COX II) have shown significant genetic differences, not only between red and gray Mazama , but also between M. gouazoubira and M. nemorivaga , and even among individuals within the species studied [3,6,7].…”
Section: Introductionmentioning
confidence: 99%
“…However, heterozygotes for a single centric fusion generally form trivalents in meiosis, causing minimal problems in reproduction [Baker and Bickham, 1986], as observed in a meiotic study performed on M. americana [Aquino et al, 2013]. However, Cursino et al [2014] and Salviano et al [2017] verified that hybrids of different M. americana cytotypes possess a mechanism of post-zygotic reproductive isolation that involves subfertility or infertility, demonstrating reproductive isolation with the accumulation of chromosomal rearrangements. When accumulated fixation of several centric fusions occurs, reproductive isolation is increasingly likely due to gamete incompatibility [Dobigny et al, 2002].…”
Section: Discussionmentioning
confidence: 99%
“…The red brocket deer (Mazama americana) is one of the best examples for a large mammal of karyotypic diversification leading to true sympatric speciation (see Amato et al, 2000, andHuang et al, 2006, for a similar case in Muntiacus reevesi). Members of this species complex (Abril et al, 2010;Aquino et al, 2013;Cursino et al, 2014), currently occur in forest habitats (Bodmer, 1997;Duarte, 1996;Escobedo-Morales et al, 2016;Varela et al, 2010) throughout a wide distribution range from México to the north of Argentina (Eisemberg, 1989;Emmons, 1990). Earlier studies described up to eight different species within the red brocket deer complex (Allen, 1915) that were later included in one with a variable number (9-15) of subspecies (Cabrera, 1960;Czernay, 1987;Rossi, 2000).…”
Section: Introductionmentioning
confidence: 99%
“…Members of this species complex (Abril et al, 2010;Aquino et al, 2013;Cursino et al, 2014), currently occur in forest habitats (Bodmer, 1997;Duarte, 1996;Escobedo-Morales et al, 2016;Varela et al, 2010) throughout a wide distribution range from México to the north of Argentina (Eisemberg, 1989;Emmons, 1990). Earlier studies described up to eight different species within the red brocket deer complex (Allen, 1915) that were later included in one with a variable number (9-15) of subspecies (Cabrera, 1960;Czernay, 1987;Rossi, 2000). A cryptic species, the small red brocket deer M. bororo, was initially included within the complex but lately identified as a separated species based on chromosomal and morphological differences (Duarte, 1996;Duarte and Merino, 1997;Duarte and Jorge, 2003).…”
Section: Introductionmentioning
confidence: 99%
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