Genetic diversity and the history of pacific island house geckos (Hemidactylus and Lepidodactylus)

Moritz C., Case T.J., Bolger D.T. and Donnellan S. (1993) Genetic diversity and the history of pacific island house geckos (Hemidactylus and Lepidodactylus). Biological Journal of the Linnean Society, 48 2: 113-133. doi:10.1006/bijl.1993.1010


Author Moritz C.
Case T.J.
Bolger D.T.
Donnellan S.
Title Genetic diversity and the history of pacific island house geckos (Hemidactylus and Lepidodactylus)
Journal name Biological Journal of the Linnean Society   Check publisher's open access policy
ISSN 0024-4066
Publication date 1993
Sub-type Article (original research)
DOI 10.1006/bijl.1993.1010
Volume 48
Issue 2
Start page 113
End page 133
Total pages 21
Subject 1100 Agricultural and Biological Sciences
1105 Dentistry
Abstract Patterns of variation in chromosomes, mitochondrial DNA and allozymes were assessed for two parthenogenetic (Lepidodactylus lugubris and Hemidactylus garnotii ) and one sexual (H. frenatus) species of house gecko that have colonized remote Pacific Ocean islands. The aims were to test the assumed recency of colonization and to provide information on the amount and distribution of genetic variation. Lepidodactylus lugubris was found to have diploid and triploid clones, high heterozygosity and moderate diversity for allozymes, and only two common types of mtDNA. The common clones distinguished by genetic analysis were geographically widespread. Together the genetic data suggest multiple origins of L. lugubris, with multiple recent invasions of the Pacific Ocean islands. Hemidactylus garnotii had low genetic diversity for chromosomes, mtDNA and allozymes. In contrast, its sexual congener, H. frenatus, had unusually high levels of mtDNA diversity, with some widespread variants. The low level of mtDNA diversity in the parthogenetic species provides strong support for the assumption that these are recent colonists of Pacific islands.
Keyword -Evolution - parthenogenesis - biogeography - Oceania - mitochondrial DNA - allozymes - chromosomes - polyploidy - Gekkonidae
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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