Chromosomes of Two Australian Lizards of the Families Scincidae and Gekkonidae

King, Max

doi:10.1508/cytologia.38.205

Cited by 14 publications

(6 citation statements)

References 15 publications

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“…The types of chromosomes of L. vittigera were 16 metacentric macrochromosomes and 12 microchromosomes (Table 2). This is in agreement with previous reports of cytogenetic information of lizards in subfamily Lygosominae which show 14-16 macrocrhomosomes and 12-16 microchromosomes (Makino and Momma 1949, Bhatnagar 1959, Becak et al 1972, King 1973a, b, Hardy 1979, De Smet 1981, Kupriyanova 1973, 1974, 1984, Adegoke 1985, Colus and Ferrari 1988, Adegoke and Ejere 1991, Donnellan 1991a, Eremchenko et al 1992, Ota and Lue 1994, Ota et al 1991, 1996, Norris 2003.…”

Section: Resultssupporting

confidence: 92%

“…No sex chromosome heteromorphism was observed. It is a consistent characteristic from previous reports of the cytogenetics of lizards in family Scincidae (Makino and Momma 1949, Bhatnagar 1959, Dallai and Talluri 1969, Deweese and Wright 1970, Becak et al 1972, King 1973a, b, Wright 1973, Hardy 1979, De Smet 1981, Kupriyanova 1973, 1974, 1984, 1986, Branch 1980, Adegoke 1985, Cano et al 1985, Capriglione 1987, Colus and Ferrari 1988, Guo and Dong 1988 Odierna 1990, 1992, Adegoke and Ejere 1991, Donnellan 1991a, Eremchenko et al 1992, Caputo et al 1994, Ota and Lue 1994, Ota et al 1991, 1996, 1997, Norris 2003.…”

Section: Resultssupporting

confidence: 89%

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Cytogenetic of Skink (Reptilia, Scincidae) from Thailand: II: Chromosome Analyses of Stripe Tree Skink (<i>Lipinia vittigera</i>)

et al. 2017

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Chromosomal analyses of the stripe tree skink (Lipinia vittigera Boulenger, 1894) from mitotic and meiotic cell divisions were studied. Bone marrow and testis samples were taken from five male and five female skinks. Skink chromosome preparations were conducted by squash technique from bone marrow and testis. The chromosomes were stained by conventional staining and Ag-NOR banding techniques. The results showed that the diploid chromosome number of L. vittigera was 2n=28, and the fundamental number (NF) was 44 in both males and females. The types of chromosomes were present as 8 large metacentric, 2 medium metacentric, 6 small metacentric macrochromosomes, and 12 microchromosomes. There was no observation of strange size chromosomes related to sex. Nucleolar organizer regions (NORs) appear to the telomere on the long arm of the largest metacentric chromosome pair 1 and medium metacentric chromosome pair 5. We found that during metaphase I on meiosis, the homologous chromosomes showed synapsis, which can be defined as the 14 bivalents and 14 haploid chromosomes at metaphase II as diploid species. The karyotype formula of L. vittigera is as follows: m m m 8 2 6 2 (diploid) 28=L +M +S +12 microchromosomes n

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 89%

Cytogenetic of Skink (Reptilia, Scincidae) from Thailand: II: Chromosome Analyses of Stripe Tree Skink (<i>Lipinia vittigera</i>)

et al. 2017

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“…This phylogenetic relationship suggests that geckos may retain the ancestral squamate karyotypes. Notwithstanding this, however, geckos actually have unique karyotypes that are also characterized by scarcity of microchromosomes with a very few exceptions [ 25 ], as observed in lacertid lizards. The karyotypes of geckos are highly diversified, ranging from 2n = 16 to 48, and the number of chromosome arms varies considerably (FN = 32 to 76) [ 1 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Karyotype Reorganization in the Hokou Gecko (Gekko hokouensis, Gekkonidae): The Process of Microchromosome Disappearance in Gekkota

et al. 2015

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The Hokou gecko (Gekko hokouensis: Gekkonidae, Gekkota, Squamata) has the chromosome number 2n = 38, with no microchromosomes. For molecular cytogenetic characterization of the gekkotan karyotype, we constructed a cytogenetic map for G. hokouensis, which retains the ancestral karyotype of Gekkota, with 86 functional genes, and compared it with cytogenetic maps for four Toxicofera species that have many microchromosomes (Elaphe quadrivirgata, Varanus salvator macromaculatus, Leiolepis reevesii rubritaeniata, and Anolis carolinensis) and that for a lacertid species (Lacerta agilis) with only one pair of autosomal microchromosomes. Ten pairs of G. hokouensis chromosomes [GHO1, 2, 3, Z(4), 6, 7, 8, 13, 14, and 15] showed highly conserved linkage homology with macrochromosomes and/or macrochromosome arms of the four Toxicofera species and corresponded to eight L. agilis macrochromosomes (LAG). However, GHO5, GHO9, GHO10, GHO11, and LAG6 were composed of chromosome segments that have a homology with Toxicofera microchromosomes, and no homology was found in the chromosomes between G. hokouensis and L. agilis. These results suggest that repeated fusions of microchromosomes may have occurred independently in each lineage of Gekkota and Lacertidae, leading to the disappearance of microchromosomes and appearance of small-sized macrochromosomes.

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“…Werner (1956) found a ranger in chromosome numbers of 2n=36 to 48 in eight species of the Gekkonidae. King (1973) reported that the diploid chromosome number of D. tessellatus is 2n=28. The chromosome numbers of 2n=44, 40 and 42 reported for the three species in the present study support the model conservatism in the chromosome number for this familly (2n= 28 to 46).…”

Section: Discussionmentioning

confidence: 99%

Chromosomes of Three Egyptian Lizards of the Family Gekkonidae (Squamata: Reptilia).

1995

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Chromosomes of Two Australian Lizards of the Families Scincidae and Gekkonidae

Cited by 14 publications

References 15 publications

Cytogenetic of Skink (Reptilia, Scincidae) from Thailand: II: Chromosome Analyses of Stripe Tree Skink (<i>Lipinia vittigera</i>)

Cytogenetic of Skink (Reptilia, Scincidae) from Thailand: II: Chromosome Analyses of Stripe Tree Skink (<i>Lipinia vittigera</i>)

Karyotype Reorganization in the Hokou Gecko (Gekko hokouensis, Gekkonidae): The Process of Microchromosome Disappearance in Gekkota

Chromosomes of Three Egyptian Lizards of the Family Gekkonidae (Squamata: Reptilia).

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