Revisiting Schemske & Bradshaw 1999

In a paper published in PNAS in 1999, Douglas Schemske and Toby Bradshaw showed, through field crosses of a bee-pollinated and a hummingbird-pollinated monkeyflower (Mimulus) plant, that genes of large effect on pollinator preference have had a role in floral evolution and premating reproductive isolation of these plants. Seventeen years after the paper was published, … Continue reading Revisiting Schemske & Bradshaw 1999

Revisiting Coyne and Orr 1989

In a paper published in Evolution in 1989, Jerry Coyne and Allen Orr showed, through a meta-analysis of 119 pairs of closely-related Drosophila species at different stages of speciation, that mating discrimination, and sterility or inviability of hybrids, gradually increase with time since speciation. Coyne and Orr also demonstrated important differences in patterns between allopatric … Continue reading Revisiting Coyne and Orr 1989

Revisiting Bond and Kamil 2002

In a paper published in Nature in 2002, Alan Bond and Alan Kamil showed, with experiments using real jays and digital moths, that frequency-dependent predation led to the evolution of greater crypticity and phenotypic variation. Fourteen years after the paper was published I spoke to Alan Bond about how he got interested in studying effects … Continue reading Revisiting Bond and Kamil 2002

Revisiting Johnson 1993

In a paper published in Ecological Applications in 1993, Nancy Collins Johnson showed, experimentally, that fertilization of soil leads to the selection of Arbuscular Mycorrhizal (AM) fungi that are inferior mutualists. Johnson found that fertilization, both, alters the species composition of AM fungal communities and that big bluestem plants colonized with AM fungi and other … Continue reading Revisiting Johnson 1993

Revisiting Kirkpatrick 1982

In a paper published in Evolution in 1982, Mark Kirkpatrick showed, theoretically, that strong female mating preference for a male trait that reduces viability is neither selected for or against, but the mating advantage it provides to the males it prefers can lead to maintenance of that male trait in the population. Thirty-four years after … Continue reading Revisiting Kirkpatrick 1982

Revisiting Clutton-Brock and Albon 1979

In a paper published in Behaviour in 1979, Tim Clutton-Brock and Steve Albon showed, using observations and playback experiments, that red deer stags use roaring contests to assess each other's fighting abilities when there aren't any obvious size discrepancies. Twenty-seven years after the paper was published, I spoke to Tim Clutton-Brock (with inputs from Steve … Continue reading Revisiting Clutton-Brock and Albon 1979

Revisiting Gillespie 2004

In a paper published in Science in 2004, Rosemary Gillespie demonstrated that both dispersal and in situ speciation contribute to accumulation of species numbers of Tetragnathid spiders on Hawaiian islands. Moreover, accumulation, whether through dispersal or speciation, happens in a way that no island contains more than one species of a particular ecomorph, i.e. in … Continue reading Revisiting Gillespie 2004