posted by Machteld
We celebrated midsommer-eve yesterday with many people of the lab, it was a great day, hope everyone else had lots of fun too!
Wednesday, June 20, 2012
Our paper in Trends in Ecology & Evolution about the role of learning in sexual selection and speciation is now online, and you can find a link to it here. Soon the reprints will hopefully come, and then you can ask Machteld Verzijden for a copy (firstname.lastname@example.org). Hopefully, this paper will stimulate increased interest and more experimental and observational studies in this fast moving field.
Below, you will find more details about the paper. Enjoy!
Learning is widespread in nature, occurring in most animal taxa and in several different ecological contexts and, thus, might play a key role in evolutionary processes. Here, we review the accumulating empirical evidence for the involvement of learning in mate choice and the consequences for sexual selection and reproductive isolation. We distinguish two broad categories: learned mate preferences and learned traits under mate selection (such as bird song). We point out that the context of learning, namely how and when learning takes place, often makes a crucial difference to the predicted evolutionary outcome. Factors causing biases in learning and when one should expect the evolution of learning itself are also explored.
Saturday, June 16, 2012
Posted by Erik Svensson
Got this photo from Eric (Lesley's husband) from our nice "After work"-event downtown Lund at "Hercules Bar", last Tuesday (June 12 2012). Always nice with these summer evenings in Lund with visiting students, interns and postdocs. Looking forward to see you all (and some others) on June 30 in Dalby as well!
Monday, June 11, 2012
Scientific misconceptions, publication stress and criticism of molecular ecology as a research field
Posted by Erik Svensson
At Juha Merilä's research group blog, EGRU-blog, one often finds very interesting and provocative posts, that stimulates self-reflection and critical thinking. Here is one such post, which raises some critical questions about the field of molecular ecology and the lack of rigour among some of the scientists defining themselves as belonging to this novel field.
This short post actually refers to a recent Invited Review, which is likely to upset some molecular ecologists, as it is very provocative and questions much of the research practices in this very young and technologically-oriented discipline. I do not necessarily endorse everything in this article, and some points that are discussed are beyond my expertise and research interests. As for myself, I do not get very upset or feel very threatened by the message, because I am not a molecular ecologist (and will never become one), even though we have used molecular techniques in our research lab for several years now, and published several papers in the journal Molecular Ecology as well (e. g. this, this and this).
But using molecular techniques, like we have done in these studies, and even endorsing them, is not the same thing as being a molecular ecologist, in my opinion. It is not even enough to publish in the journal Molecular Ecology, I think. I, for myself, would never define myself as molecular ecologist. Rather, I define myself as an old-fashioned evolutionary biologist interested in the ecological aspects of evolutionary change. Or sometimes I simply define myself an evolutionary ecologist, who is prepared to use observations, field and lab experiments, quantitative genetics and molecular techniques, depending on what is needed and what question that is being adressed.
In contrast, molecular ecology as a field, as I perceive it, is a primarily a discipline defined by techniques and the use of molecular markers, rather than being defined by research questions. And that is why I have never been very interested in this field, as I tend to be more interested in conceptual problems in ecology and evolution, while not being hostile towards new techniques, when they help to solve these classical problems (which is not always the case, however). Molecular Ecology partly grew out from behavioural ecology during the eighties and nineties, as new molecular methods for determining paternity in birds and other animals were developed (first DNA-fingerprinting and later microsattelites). Later, the field came to include many other research questions being adressed by the use of molecular markers, such as phylogeography and molecular population genetic structure etc.
The current review is - interestingly - published in Molecular Ecology - which I think is to the benefit of this outlet as it shows some self-criticism of the same field that the journal is built upon. Hopefully, this article will help to promote self-reflection and critical thinking, both among molecular ecologists (the main target), but also other biologists using molecular techniques. The paper is Open Acess and can be downloaded here.
Here are some excerpts, and quite critical and provocative quotations from the paper (Abstract and full reference given below this post):
"Many misconceptions in the various subdisciplines of molecular ecology arise as a consequence of the huge amount of data that can be relatively easily and rapidly generated and analysed. There are many more automated DNA sequencers than classes in population genetic theory, and as self-educated molecular ecologists contribute in professional service, we sometimes see misconceptions perpetuated by journal authors, reviewers and editors."
"At the end of this review, many readers will still believe that if they can properly format data for 2011) or ( 2005), they do not need population genetic theory, they can pick it up along the way, or all the information they need is in the manual. Considering the high error rate (49.9%) in publications of a simple calculation of a population genetic parameter revealed by, our answer is this: about half of you are right." (
Finally, here is some very harsh criticism against the data publication culture in the field of molecular ecology, and the tendency to crank out too many papers, with too many authors and ignoring much of the classic work that has already been published and which would be relevant to cite: