Geographic variation in the advertisement call of Crinia signifera (Anura:Myobatrachidae) on Kangaroo Island and across southern south-eastern Australia

2008 ◽  
Vol 56 (4) ◽  
pp. 223 ◽  
Author(s):  
Murray J. Littlejohn
Keyword(s):  
Geographic Variation ◽  
Pulse Number ◽  
Advertisement Call ◽  
Regional Study ◽  
South Eastern ◽  
Island Sample ◽  
Eastern Australia ◽  
Continental Islands ◽  
Two Populations ◽  
South Eastern Australia

The male advertisement call of anuran amphibians has a major role in mate choice, and regional variation in this attribute can act as an indicator of speciation and a marker for genetic differentiation. As part of a regional study of geographic variation in the male advertisement call of Crinia signifera across south-eastern Australia and adjacent larger continental islands, samples of advertisement calls from two populations on Kangaroo Island and two populations on the adjacent Fleurieu Peninsula were compared. Four call attributes were considered: pulse number, call duration, pulse rate and dominant frequency. Pulse number is considered the most reliable for comparative purposes because it is not influenced by effective temperature or audio recording and analysis. The two island populations (central and eastern, ~24 km apart) differ significantly in pulse number, with contact but no overlap of interquartile ranges. The eastern sample differs markedly from those on the nearby Fleurieu Peninsula – which are both similar to the more distant central island sample. Geographic variation in pulse number in these four samples and 11 others from two recent publications is then interpreted in the light of land bridges and lower temperatures of the late Pleistocene and early Holocene.

scholarly journals Interspecific and Geographic Variation in the Diets of Sympatric Carnivores: Dingoes/Wild Dogs and Red Foxes in South-Eastern Australia

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0120975 ◽  
Author(s):  
Naomi E. Davis ◽  
David M. Forsyth ◽  
Barbara Triggs ◽  
Charlie Pascoe ◽  
Joe Benshemesh ◽  
...  
Keyword(s):  
Geographic Variation ◽  
Red Foxes ◽  
South Eastern ◽  
Eastern Australia ◽  
Sympatric Carnivores ◽  
Wild Dogs ◽  
South Eastern Australia

The Litoria-Ewingi Complex (Anura, Hylidae) in South-Eastern Australia .9. Variation in Mitochondrial-Dna Across a Narrow Zone of Hybridization Between Litoria-Ewingi and Litoria-Paraewingi

1990 ◽  
Vol 38 (1) ◽  
pp. 53 ◽  
Author(s):  
SL Dennington
Keyword(s):  
Mitochondrial Dna ◽  
Hybrid Zone ◽  
Enzyme Analysis ◽  
Advertisement Call ◽  
Restriction Enzyme Analysis ◽  
Southern Limit ◽  
Allopatric Populations ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

The mitochondrial DNA (mtDNA) of Litoria ewingi and L. paraewingi, two species of hylid frog occurring in south-eastern Australia, was investigated by restriction enzyme analysis. Clear diagnostic differences between allopatric populations of these two species were shown in several of the fragment patterns. MtDNA haplotypes of individuals from populations along a transect across the southern hybrid zone between L. ewingi and L. paraewingi were identified. Four individuals from these hybrid populations had inherited a unique haplotype of mtDNA. The width of the hybrid zone based on variation in mtDNA, is at least 5 km. The southern limit of introgression of mtDNA typical of L. paraewingi coincides with the southern limit based on call variation. However, mtDNA typical of L. ewingi was not found as far north as expected by other criteria. The relationship between mtDNA haplotype and structure of advertisement call in individuals from populations in the hybrid zone was analysed. The species-specificity of mtDNA established for allopatric populations held for all but two of the ten recorded putative parental males. Surprisingly, three of the four hybrids based on call structure had inherited mtDNA characteristic of L. ewingi.

A new biotype of bluegreen aphid (Acyrthosiphon kondoi Shinji) found in south-eastern Australia overcomes resistance in a broad range of pasture legumes

2012 ◽  
Vol 63 (9) ◽  
pp. 893 ◽  
Author(s):  
A. W. Humphries ◽  
D. M. Peck ◽  
S. S. Robinson ◽  
T. Rowe ◽  
K. Oldach
Keyword(s):  
Breeding Program ◽  
Severe Damage ◽  
South Eastern ◽  
Pasture Legumes ◽  
Eastern Australia ◽  
Two Populations ◽  
Pasture Legume ◽  
South Eastern Australia

A new bluegreen aphid biotype (BGA, Acyrthosiphon kondoi Shinji) has been found in south-eastern Australia that causes severe damage and mortality in seedlings of previously resistant pasture legume cultivars. Populations of BGA collected at Urrbrae and Binnum, SA in 2009 caused 100% mortality in 29 cultivars of annual and perennial Medicago spp. and annual Trifolium spp. Delaying inoculation from the first trifoliate to the 6–8 trifoliate stage and removing susceptible genotypes from experiments had no impact on reducing mortality from 100% in previously resistant barrel medics. A half-sib family of lucerne from the SARDI breeding program has maintained resistance to the Urrbrae 2009 BGA. A detailed study of the virulence of BGA populations collected from Toowoomba (Qld), Tamworth, Howlong (NSW), Launceston (Tas.), Colebatch, Kimba, Urrbrae and Vivonne Bay (SA) in 2010–11 on 33 pasture legumes provides evidence of new virulent BGA being widespread, despite these populations causing less severe damage and mortality than the two populations collected in 2009.

Studies on populations of potorous Desmarest (Marsupialia) II. Electrophoretic, chromosomal and breeding studies

1977 ◽  
Vol 25 (4) ◽  
pp. 733 ◽  
Author(s):  
PG Johnston ◽  
GB Sharman
Keyword(s):  
Geographic Variation ◽  
Morphological Variation ◽  
Genetic Similarity ◽  
Genetic Basis ◽  
Chromosomal Variation ◽  
Blood Proteins ◽  
Electrophoretic Variation ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Geographic variation in potoroos (genus Potorous) from south-eastern Australia and Tasmania was investigated by electrophoretic and chromosomal techniques. Six of the 10 potoroo blood proteins examined showed electrophoretic variation and the genetic basis of three of these was established by breeding studies. Levels of genic heterozygosity were similar in Tasmanian and mainland populations. Coefficients of genetic similarity based on 10 loci indicated that potoroos from Tasmania and the Bass Strait islands are similar to each other but different from those of mainland Australia. No chromosomal variation was observed in potoroos examined from south-eastern Australia and Tasmania. Crosses between animals from these regions produced fertile offspring. It is concluded from this study and a related investigation on morphological variation that the genus Potorous should be separated into two species, P. platyops and P. tridactylus, with the further subdivision of the latter species into P.t. tridactylus from mainland Australia (including P. gilberti) and P.t. apicalis from Tasmania and the Bass Strait islands.

scholarly journals Correction: Interspecific and Geographic Variation in the Diets of Sympatric Carnivores: Dingoes/Wild Dogs and Red Foxes in South-Eastern Australia

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0130241 ◽  
Author(s):  
Naomi E. Davis ◽  
David M. Forsyth ◽  
Barbara Triggs ◽  
Charlie Pascoe ◽  
Joe Benshemesh ◽  
...  
Keyword(s):  
Geographic Variation ◽  
Red Foxes ◽  
South Eastern ◽  
Eastern Australia ◽  
Sympatric Carnivores ◽  
Wild Dogs ◽  
South Eastern Australia

Population ecology of the velvet gecko,Oedura lesueuriiin south eastern Australia: Implications for the persistence of an endangered snake

2008 ◽  
Vol 33 (7) ◽  
pp. 839-847 ◽  
Author(s):  
JONATHAN K. WEBB ◽  
DAVID A. PIKE ◽  
RICHARD SHINE
Keyword(s):  
Population Ecology ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Combining management and breeding advances to improve field pea (Pisum sativum L.) grain yields under changing climatic conditions in south-eastern Australia

Euphytica ◽  
2011 ◽  
Vol 180 (1) ◽  
pp. 69-88 ◽  
Author(s):  
L. S. McMurray ◽  
J. A. Davidson ◽  
M. D. Lines ◽  
A. Leonforte ◽  
M. U. Salam
Keyword(s):  
Pisum Sativum ◽  
Climatic Conditions ◽  
Field Pea ◽  
Grain Yields ◽  
South Eastern ◽  
Pisum Sativum L ◽  
Eastern Australia ◽  
South Eastern Australia
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