5 Works

Phylogenetic analysis of policistronic amino-acid sequences encoded by 116 flavivirus genomes

Lars Jermiin, Vivek Jayaswal & John Robinson
Recently, Genome Biology and Evolution (11:3341-3352) published three statistical tests for testing whether alignments of sequence data violate the phylogenetic assumption of evolution under homogeneous conditions. The tests extend the matched-pairs tests of symmetry, marginal symmetry, and internal symmetry for pairs of aligned homologous sequences to the case where a whole alignment is considered. Here we reveal that the new tests are misleading. We explain why this is so, reveal how the tests of whole...

Morphological characteristics of pollen from triploid watermelon and its fate on stigmas in a hybrid crop production system

Erandi C. W. Subasinghe Arachchige, Lisa J. Evans, Ulrika Samnegard & Romina Rader
Hybrid crop production is more reliant on pollinators compared to open-pollinated crops because they require cross-pollination between a male-fertile and a male-sterile line. Little is known about how stigma receipt of pollen from male-sterile genotypes affects reproduction in hybrids. Non-viable and non-compatible pollen cannot fertilise plant ovules, but may still interfere with pollination success. Here we used seedless watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) as a model hybrid plant, to evaluate the morphology, physiology,...

Natural variation at a single gene generates sexual antagonism across fitness components in Drosophila

Bosco Rusuwa, Henry Chung, Scott Allen, Francesca Frentui & Steve Chenoweth
Mutations with conflicting fitness effects in males and females accumulate in sexual populations, reducing their adaptive capacity. Although quantitative genetic studies indicate that sexually antagonistic polymorphisms are common, their molecular basis and population genetic properties remain poorly understood. Here, we show in fruit flies how natural variation at a single gene generates sexual antagonism through phenotypic effects on cuticular hydrocarbon (CHC) traits that function as both mate signals and protectors against abiotic stress across a...

Ensemble modelling of particle tracker to provide a probabilistic approach to COTS dispersal

Severine Choukroun & Michael Bode
Crown-of-thorns starfish (COTS) outbreaks spread on the Great Barrier Reef (GBR) through dispersal of larvae on ocean currents. Understanding, measuring and predicting how larvae are dispersed is vital to both modelling COTS outbreaks on the GBR, and controlling those outbreaks effectively. Despite its central importance, modelling COTS larva dispersal remains challenging due to the scarcity of knowledge on their biology and behaviour and the complex water circulation. This project applied an ensemble model approach, incorporating...

Estimating biodiversity using symbolic meta analysis

Huan Lin, Julian Caley & Scott Sisson
Global species richness is a key biodiversity metric. Concerns continue to grow over its decline due to overexploitation and habitat destruction by humans. Despite recent efforts to estimate global species richness, the resulting estimates have been highly uncertain and often logically inconsistent. Estimates lower down either the taxonomic or geographic hierarchies are often larger than those above. Further, these estimates have been typically represented in a wide variety of forms, including intervals (a, b), point...

Registration Year

  • 2022
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  • Queensland University of Technology
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