sexual selection

Our physics color commentator Rob Sheldon writes to offer some thoughts on the recent study of bees, which failed to confirm selfish gene thinking as an explanation for communal life: This is really a most interesting study. If you recall, E. O. Wilson got fame and glory for studying ants. The problem he addressed, is why social insects will sacrifice their life for the sake of the hive-for someone else’s genes. Altruism, whether in humans or ants, seemed to contradict Darwin’s dictum “survival of the fittest.” Wilson argued that it was actually the percentage of genes that mattered, and for humans defended a child was more likely than defending a niece, and a niece greater than a 2nd cousin. Dawkins Read More ›

Explains everything and its opposite! Our philosopher and photographer friend Laszlo Bencze writes to apprise us of “the definitive explanation” of why men want to pay on a first date: “There is an evolutionary reason for this, says Helen Fisher, a biological anthropologist and senior research fellow at the Kinsey Institute at Indiana University Bloomington. ‘Women want to know if a man will spend his resources on her,’ she says. ‘For millions of years they needed a partner to provide for their young, and they keep looking for that signal.’” Elizabeth Bernstein, “Who Pays on a Date? That’s Still a Complicated Question” at Wall Street Journal Okay, but on the other hand, as Bencze observes, evolution could also explain the Read More ›

It’s as if evolutionary biologists are beginning to take some of the problems of Darwinism seriously enough to discuss them openly, as failures in research. In this case, the failure of claims for sexual selection (females drive evolution by choosing the fittest mates) are openly publicized. In the past five years, meta-analyses and reviews have generated more evidence of bias in ecology and evolutionary biology research. For example, biases have been found in the literature on ideas such as feather color affecting mate choice in blue tits and black bib sizes indicating male dominance in house sparrows. As with zebra finch leg bands, such biases don’t necessarily invalidate the hypotheses themselves, but undermine the strength of evidence for them, leaving Read More ›

From ScienceDaily: Research on evolution typically focuses on the importance of social interactions, including parent-offspring bonding, competition for resources, and courtship and mating rituals. But Nathan Bailey at the University of St Andrews in Scotland and his colleague Allen Moore at the University of Georgia realized that isolation must then be an extreme condition worthy of equal attention. “The environment an animal experiences can influence which genes it expresses, when, and how much, so conditions of social isolation might cause expression of different traits,” says Bailey. “This in turn could affect responses to natural selection in terms of survival and reproduction, which has evolutionary consequences. For some species, it might even mean that temporary social isolation is favorable.” The invasive Read More ›