Karyotypic variation in the Australian gekko Phyllodactylus marmoratus (Gray) (Gekkonidae: Reptilia)

Karyotypic variation in the Australian gekko Phyllodactylus marmoratus (Gray) (Gekkonidae: Reptilia)

The gekko Phyllodactylus marmoratus has at least three distinct chromosome races; 2n=39, 2n=26 ZZ/ZW and 2n=34. Specimens from these races are morphologically distinguishable, have a degree of habitat specialization and occur in a defined distribution. The 2n=36 race found in Eastern Australia is th...

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Bibliographic Details
Published in:Chromosoma Vol. 54; no. 1; pp. 75 - 87
Main Authors: King, M, Rofe, R
Format: Journal Article
Language:English
Published: Austria 01-01-1976
Subjects:
Animals
Chromosomes
Female
Genetic Variation
Karyotyping
Lizards
Male
Sex Chromosomes
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Description
Summary:The gekko Phyllodactylus marmoratus has at least three distinct chromosome races; 2n=39, 2n=26 ZZ/ZW and 2n=34. Specimens from these races are morphologically distinguishable, have a degree of habitat specialization and occur in a defined distribution. The 2n=36 race found in Eastern Australia is the presumed primordial type. The 2n=34 race occurs in Western Australia and is regarded as a fusion derivative. The 2n=36 ZZ/ZW race, which is only found on the Murray River system in Eastern Australia has a heteromorphic sex chromosome system present in the female. Giemsa banding suggests that this heteromorphism is the result of a pericentric inversion.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0009-5915
1432-0886
DOI:10.1007/bf00331835