A5059143635- Plant and animal studies
- Genetic diversity and population structure
- Insect behavior and control techniques
- Genetic and phenotypic traits in livestock
- Insect-Plant Interactions and Control
- Forest Insect Ecology and Management
- Insect and Pesticide Research
- Evolution and Genetic Dynamics
- Genetic Mapping and Diversity in Plants and Animals
- Livestock Farming and Management
- Insect Utilization and Effects
- Insect Resistance and Genetics
- Animal Behavior and Reproduction
- Coleoptera Taxonomy and Distribution
- Physiological and biochemical adaptations
- Yeasts and Rust Fungi Studies
- Insect Pest Control Strategies
- Botanical Research and Applications
- Insect and Arachnid Ecology and Behavior
- Plant Pathogens and Fungal Diseases
- Helminth infection and control
- Cancer-related molecular mechanisms research
- Animal Ecology and Behavior Studies
- Plant and fungal interactions
- Fish Ecology and Management Studies
University of New England
2009-2024
The University of Sydney
1970-2009
The University of Queensland
2009
South Australian Museum
2006
University of New England
1990-1998
Western University
1998
Syracuse University
1998
University of California, Davis
1979-1993
Ministry of Lands and Rural Resettlement
1988
Aarhus University
1977
Two new yeast species were isolated from flowers of Hibiscus in Eastern and Northern Australia. Kodamaea kakaduensis is heterothallic, haploid, similar to other Candida restingae. Buds are often produced on short protuberances, a true mycelium formed. The differs others by the assimilation trehalose, melezitose, xylitol, reproductively isolated. cells tolerans small pseudomycelium carbon nitrogen pattern reminiscent that Zygosaccharomyces rouxii but two not closely related. Sequences D1/D2...
SUMMARY An enteric coronavirus that is antigenically closely related to feline infectious peritonitis virus ( fipv ) ubiquitous in the cat population. This has been designated differentiate it from . The shed feces by many seropositive cats; catteries a cause of inapparent mildly severe enteritis kittens 6 12 weeks age. may produce more young specific-pathogen-free kittens. Feline selectively infects apical columnar epithelium intestinal villi, caudal part duodenum cecum. In infections,...
Twenty‐one microsatellite loci in 11 populations of Asian water buffalo (eight swamp, three river type) were analysed and, within and among populations, genetic variability was compared with results from 25 polymorphic protein‐coding loci. Within‐population mean heterozygosity ranged 0·380–0·615, approximately twice that estimated the (0·184– 0·346). Only eight significant departures Hardy–Weinberg equilibrium (involving four loci) detected; global tests showed heterozygote deficiencies for...
Levels of variation in eight large captive populations D. melanogaster (census sizes ∼ 5000) that had been captivity for periods from 6 months to 23 years (8 365 generations) were estimated allozyme heterozygosities, lethal frequencies, and inversion heterozygosities phenotypic variances, additive genetic variances ( V A ), heritabilities h 2 ) sternopleural bristle numbers. Correlations between all measures except frequencies high significant. All declined with time captivity, those average...
Abstract The heritability of thorax length in the cactophilic Drosophila buzzatii was determined for flies from each 10 rotting cactus cladodes. For rot, emerging were used as parents progeny reared laboratory. methods full sib analysis with mated assortatively and also offspring-parent regression. From this, heritabilities measured laboratory environment natural cladode. environment, h2 = 0.3770 +/- 0.0203 0.0936 0.0087 within rots 0.0595 0.0123 a population drawn randomly different rots....
1. The response to selection for increased number of bristles on one abdominal segment was studied over 12 generations using a factorial design three population sizes (10, 20 and 40 pairs parents) five intensities 20, 40, 80% controls). 2. responses the average agreed well with those expected from estimated base heritability, but individual replicates diverged considerably. 3. Larger populations tended give greater selection, due mainly larger realized heritabilities. 4. There no consistent...
Journal Article ISOZYME VARIATION IN NATURAL POPULATIONS OF DROSOPHILA BUZZATII Get access J. S. F. Barker, Barker Department of Animal Husbandry The University Sydney N.S.W. 2006 Australia Search for other works by this author on: Oxford Academic Google Scholar C. Mulley Evolution, Volume 30, Issue 2, 1 June 1976, Pages 213–233, https://doi.org/10.1111/j.1558-5646.1976.tb00905.x Published: 01 1976 history Received: 07 July 1975 Revision received: 24 October
In interspecific competition between various strains of Drosophila melanogaster and a vermilion mutant strain D. simulans in continuous populations, heterogeneity among replicate populations generations within has been observed when the fitness was apparently similar to that vermilion. Larval adult numbers vary widely generations, so differential effects population density on components two species could be an important factor contributing heterogeneity. The variation larval proportions...
1. A statistical analysis has been made of the production records in all lactations, up to third, 10,967 British Friesian cows. The work was done two sections, for those animals by home-bred sires and imported from Holland Canada. Within each section, three parallel sets calculations were made, based on lactation 1, with at least completed lactations 1 2, lactations. a hierarchical manner, taking variables order sire, herd, year, month age calving. measurements 305-day yield, fat content...
The swamp type of the Asian water buffalo is assumed to have been domesticated by about 4000 years BP, following introduction rice cultivation. Previous localizations domestication site were based on mitochondrial DNA (mtDNA) variation within China, accounting only for maternal lineage. We carried out a comprehensive sampling Taiwan, Vietnam, Laos, Thailand, Nepal and Bangladesh sequenced mtDNA Cytochrome b gene control region Y-chromosomal ZFY, SRY DBY sequences. Swamp has higher diversity...
Abstract Drosophila buzzatii is confined to reproducing in a well defined patchy environment consisting of rotting cactus cladodes which are ephemeral, permitting at most three generations. Flies emerging from such rots were used estimate the additive genetic variance within and between for body size also electrophoresed determine their genotypes six polymorphic loci. F statistics estimated allozyme data. The FST derived was significantly larger than FST. It proposed this due selective...
Swamp and river buffalo mitochondrial DNA (mtDNA) was sequenced for 303 bp of the cytochrome b gene 54 animals from 14 populations, 158 D‐loop region 80 11 populations. Only one haplotype found in buffalo. Of four haplotypes identified swamp buffalo, all populations is apparently ancestral both to other haplotype. The phylogenetic relationships among 33 haplotypes, with a cluster only, also support evolution domesticated an swamp‐like animal, most likely represented today by wild Asian (...
The spatial structure of 12 allele frequencies was examined for 57 populations the cactophilic fly Drosophila buzzatii from eastern Australia. Techniques include spatial-autocorrelation analysis and newly developed directional autocorrelation. Although 11 differ among localities, only 6 show along one dimension. Directional correlograms support clines or major geographic trends in different directions 5 frequencies. Spatial were also computed genetic distances. overall results-genetic...
ABSTRACT Temporal variation in allozyme frequencies at six loci was studied by making monthly collections over 4 yr one population of the cactophilic species Drosophila buzzatii. Ten sites were defined within study locality, and for all temporal samples, separate made each these sites. Population structure microgeographic space changes time analyzed using F-statistic estimators, multivariate analyses allele genotype with environmental variables carried out.—Allele showed significant time,...
1. An experimental evaluation of Robertson's (1960) theory limits in artificial selection was attempted. A number lines from the Canberra base population were selected for abdominal bristle over 50 generations with sizes 10, 20, and 40 pairs parents intensities 20 40% as well unselected controls. 2. In general, total response obtained increased an increase Nī (product size standardized differential). 3. Thus, individuals scored, or, a fixed parents, intensity both rates per generation...
Abstract Visible pigmentation phenotypes can be used to explore the regulation of gene expression and evolution coat color patterns in animals. Here, we performed whole-genome RNA sequencing applied genome-wide association study, comparative population genomics biological experiments show that 2,809-bp-long LINE-1 insertion ASIP (agouti signaling protein) is causative mutation for white phenotype swamp buffalo (Bubalus bubalis). This (3′ truncated containing only 5′ UTR) functions as a...