Revisiting Moran 1996

In a paper published in PNAS in 1996, Nancy Moran showed that endosymbiotic bacterial lineages showed faster rates of evolution of 16S rDNA and increased rate of fixation of deleterious mutations, compared to free-living lineages. These results, Moran concluded, were evidence for the Muller's ratchet phenomenon in combination with mutational bias. Twenty-three years after the … Continue reading Revisiting Moran 1996


Revisiting Frank 1995

In a paper published in Nature in 1995, Steven Frank proposed a simple model to show how "mutual policing" can suppress competition and ensure "fairness" in reproduction, in the evolution of cooperative groups. Twenty-two tears after the paper was published. I asked Steven Frank about his motivation to do the work presented in this paper, … Continue reading Revisiting Frank 1995

Revisiting Bascompte et al. 2003

In a paper published in PNAS in 2003, Jordi Bascompte, Pedro Jordano, Carlos Meli├ín and Jens Olesen investigated the structural organisation of 52 mutualistic networks and found them to be highly nested, resulting in communities centred around a smaller core of interactions. Bascompte and colleagues also found that communities that contained a greater number of … Continue reading Revisiting Bascompte et al. 2003

Revisiting Ebert 1994

In a paper published in Science in 1994, Dieter Ebert showed, using laboratory experiments on a horizontally-transmitted disease in Daphnia, that spore production and infection was lower when the geographic distance between parasite and wild-caught Daphnia host origins were greater. Ebert's findings suggested that parasites were locally adapted and contradicted the hypothesis that co-evolved parasites … Continue reading Revisiting Ebert 1994

Revisiting Colwell and Lees 2000

In a paper published in Trends in Ecology & Evolution in 2000, Robert Colwell and David Lees reviewed the conceptual and empirical literature on the influence of the "mid-domain effect" - geometric constraints in geographic patterns of species richness caused by physiological and physiographical boundaries. Sixteen years after the paper was published, I asked Robert … Continue reading Revisiting Colwell and Lees 2000