Geographic parthenogenesis in the Australian arid zone: II. Climatic analysis of orthopteroid insects of the genera Warramaba and Sipyloidea

Kearney, Michael and Moussalli, Adnan (2003) Geographic parthenogenesis in the Australian arid zone: II. Climatic analysis of orthopteroid insects of the genera Warramaba and Sipyloidea. Evolutionary Ecology Research, 5 7: 977-997.

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Author Kearney, Michael
Moussalli, Adnan
Title Geographic parthenogenesis in the Australian arid zone: II. Climatic analysis of orthopteroid insects of the genera Warramaba and Sipyloidea
Journal name Evolutionary Ecology Research   Check publisher's open access policy
ISSN 1522-0613
Publication date 2003
Sub-type Article (original research)
Open Access Status File (Publisher version)
Volume 5
Issue 7
Start page 977
End page 997
Total pages 21
Place of publication Tucson, AZ, United States
Publisher Evolutionary Ecology
Collection year 2003
Language eng
Abstract The Australian and zone harbours a surprising number of parthenogenetic organisms. including the well known case of the grasshopper Warramaba virgo. Less well known is the case of the stick insects of the Sipyloidea complex, which. despite its presence in the literature for over 15 years. has gone entirely unnoticed by workers in the field. We draw attention to the remarkable similarities between the evolution of parthenogenesis in Warramaba and Sipyloidea and analyse the geographic distributions of parthenogenetic and sexual forms with respect to six Climatic variables. We provide evidence that a combination of Climatic and vegetative barriers are responsible for the current distribution patterns in these taxa. Comparisons are also made with patterns of geographic parthenogenesis in lizards of the Heteronotia binoei complex. In general. there has been a strong tendency for parthenogenesis to originate via hybridization in the western part of the and zone with subsequent eastward spread throughout mulga woodlands and mallee shrublands where rainfall is both low and aseasonal. We propose that the hybridization events leading to parthenogenesis in these diverse taxa were driven by a common biogeographic process - that is, by range shifts associated with changes in aridity during the late Pleistocene.
Keyword Ecology
Evolutionary Biology
Genetics & Heredity
Arid Zone
Australia
Climate
Grasshopper
Parthenogenesis
Stick Insect
Heteronotia-binoei Gekkonidae
Formerly Moraba Virgo
Bisexual Relatives
Sexual Relatives
Cytogenetics
Origin
Clones
Evolution
Patterns
Niche
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Wed, 15 Aug 2007, 02:15:12 EST