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Allometric Engineering: A Causal Analysis of Natural Selection on Offspring Size
The results experimentally validate premises underlying theories of optimal egg size: fecundity selection favoring the production of large clutches of small eggs was balanced by survival selection favoring large offspring, but large hatchlings did not always have the highest survival, contrary to most theoretical expectations.
Divergent Selection and the Evolution of Signal Traits and Mating Preferences
The divergence of mating preferences in correlation with environment is consistent with the classic by-product model of speciation in which premating isolation evolves as a side effect of divergent selection adapting populations to their different environments.
The biogeographical boundaries of northern Australia: evidence from ecological niche models and a multi‐locus phylogeny of Uperoleia toadlets (Anura: Myobatrachidae)
This work delineated species boundaries, identified cryptic species and provided a region-wide assessment of the biogeography of northern Australia, and proposed new hypotheses about the effects of Pleistocene climate cycles on the present-day diversity of northernAustralia.
Can non-directional male mating preferences facilitate honest female ornamentation?
This work investigates the evolution of male mating preferences using a mathematical model which specifically accounts for the fact that females must trade-off resources invested in ornaments with reproduction; and allowsmale mating preferences to evolve a non-directional shape.
Geodiversity and endemism in the iconic Australian Pilbara region: a review of landscape evolution and biotic response in an ancient refugium
The Pilbara is an area of exceptionally high biotic diversity and endemism, and the broader biogeographical patterns revealed in the molecular analyses are consistent with those recently identified using species richness patterns of invertebrates.
Molecular phylogeny of the Australian frog genera Crinia, Geocrinia, and allied taxa (Anura: Myobatrachidae).
- K. Read, J. Keogh, I. Scott, J. Roberts, P. Doughty
- BiologyMolecular phylogenetics and evolution
- 1 November 2001
A mitochondrial gene tree for representative species of all the genera in the subfamily Myobatrachinae, with special emphasis on Crinia and Geocrinia, concludes that the phylogenetic relationships among Crinia species are well resolved with strong support for a number of distinct monophyletic clades, but more data are required to resolve relationships among these major Crinia clades.
Synchronous polyandry and multiple paternity in the frogCrinia georgiana(Anura: Myobatrachidae)
Genetic analyses, using allozyme electrophoresis, of offspring from two matings indicated that at least two of three possible males fathered offspring, suggesting multiple paternity may be more common in frogs than has been reported.
Costs of reproduction and the evolution of sexual dimorphism in a ‘flying lizard’ Draco melanopogon (Agamidae)
Measurements of wing-loading, centre of balance and gliding distances of preserved specimens support the hypothesis that a larger body, relatively larger head, and longer tail may improve a female’s aerial mobility when she is gravid.
Diversification patterns of pebble-mimic dragons are consistent with historical disruption of important habitat corridors in arid Australia.
Detecting life history trade-offs: measuring energy stores in “capital” breeders reveals costs of reproduction
Analysis of energy stores and reproductive output in Eulamprus tympanum, a viviparous scincid lizard that stores energy for reproduction in its tail, finds that non-destructive measurement of pre- and post-reproductive energy stores may greatly enhance the ability to detect significant life history trade-offs.