Species diversity in ecosystems is often accompanied by the self-organisation of the population into fascinating spatio-temporal patterns. Here, we consider a two-dimensional threespecies population model and study the spiralling patterns arising from the combined effects of generic cyclic dominance, mutation, pair-exchange and hopping of the individuals. The dynamics is characterised by nonlin...

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Guanosine 3'-5' cyclic monophosphate (cGMP) and adenosine 3'-5' cyclic monophosphate (cAMP) are important regulators of cell and tissue function. However, cGMP and cAMP transport have received relatively limited attention, especially in model organisms where such studies can be conducted in vivo. The Drosophila Malpighian (renal) tubule transports cGMP and cAMP and utilises these as signalling ...

The Steering Committee decided to approach the Editors of the Australasian Journal of Combinatorics with a proposal to publish selected refereed papers from the conference. We were delighted when the proposal was accepted, and the Australasian Journal of Combinatorics joined other journals such as Advances in Applied Mathematics, Annals of Combinatorics, Electronic Journal of Combinatorics, Jou...

Prorocentrolides are members of the cyclic imine phycotoxins family. Their chemical structure includes a 26-membered carbo-macrocycle and a 28-membered macrocyclic lactone arranged around a hexahydroisoquinoline that incorporates the characteristic cyclic imine group. Six prorocentrolides are already known. However, their mode of action remains undetermined. The aim of the present work was to e...

Males among many species, including humans, evaluate cues of sperm competition risk and adjust accordingly their sperm competition tactics. The number of potential sexual rivals can serve as an index of sperm competition risk. Therefore, men may adjust their in-pair copulatory interest in accordance with the presence of sexual rivals. Using self-reports from 45 married men, we test the hypothes...

x )-elationj and of this paper form part of a PhD thesis submitted the author to the "",,,,,,.,.,,,,,t,, of London. The author the support of the Commonwealth :::;c.hoJlarsrup Commission. Australasian Journal of Combinatorics 3(1991) pp 235-249 (a) D n and (b) NIH ~ q) for some s, 0 236 power q. s::=;n 3. term

We show the existence of a periodic solution in which four species coexist in competition for three essential resources in the standard model of resource competition. By assuming that species i is limited by resource i for each i near the positive equilibrium, and that the matrix of contents of resources in species is a combination of cyclic matrix and a symmetric matrix, we obtain an asymptoti...