Fri Apr 16, 2010 2:38 pm
Nope, not exactly. The publication of this article will be seen as empirical evidence that sex change occurred in these particular subjects under these particular conditions. You can't necessarily extrapolate the results to any other species or conditions. But you can continue to investigate the subject and see if this is common or not."but yall are all acting like it is common knowledge that African Cichlids can change sex"
They reported the species name accurately. In binomial nomenclature, "cf." is used when identification has not been absolutely confirmed. The reason they used it is because the taxonomy of Metriaclima and many other Malawi cichlids has not been entirely worked out, and speciation continues. See:"Read by a couple of academic folk before publication (freinds maybe) who have never vissited or checked the experiments (and for sure did not check the species name as being valid) would be my guess."
"Reviewers are typically anonymous and independent, to help foster unvarnished criticism, and to discourage cronyism in funding and publication decisions. Since reviewers are normally selected from experts in the fields discussed in the article, the process of peer review is considered critical to establishing a reliable body of research and knowledge. Scholars reading the published articles can only be expert in a limited area; they rely, to some degree, on the peer-review process to provide reliable and credible research that they can build upon for subsequent or related research. As a result, significant scandal ensues when an author is found to have falsified the research included in an article, as many other scholars, and the field of study itself, may have relied upon the original research."
"Why was this not picked up if it had a good peer review before apearing?"
http://www.pnas.org/content/90/22/10673.full.pdf+html"Sexual differentiation in teleost [bony] fishes is characteristically labile. The most dramatic form of sexual lability is postmaturational sex change, which is common among teleosts although rare or absent in other vertebrate taxa. In many cases this process is regulated by social cues, particularly dominance interactions."
Fri Apr 16, 2010 3:09 pm
scrubjay wrote: >snip< although skepticism is a truly healthy outlook, especially in today's world, the results of scientific research published in academic journals is probably the last place you need to apply it. >snip<
Fri Apr 16, 2010 4:25 pm
"The report of the independent Science Assessment Panel was published on 14 April 2010 and concluded that the panel had seen "no evidence of any deliberate scientific malpractice in any of the work of the Climatic Research Unit." It found that the CRU's work had been "carried out with integrity" and had used "fair and satisfactory" methods. The CRU was found to be "objective and dispassionate in their view of the data and their results, and there was no hint of tailoring results to a particular agenda." Instead, "their sole aim was to establish as robust a record of temperatures in recent centuries as possible.""
[quote]Speaking at a press conference to announce the report, the panel's chair, Lord Oxburgh, stated that his team had found "absolutely no evidence of any impropriety whatsoever" and that "whatever was said in the emails, the basic science seems to have been done fairly and properly." He said that many of the criticisms and allegations of scientific misconduct had been made by people "who do not like the implications of some of the conclusions" reached by the CRU's scientists.
Fri Apr 16, 2010 4:38 pm
Fri Apr 16, 2010 4:38 pm
Fri Apr 16, 2010 6:06 pm
Fri Apr 16, 2010 8:14 pm
Fri Apr 16, 2010 8:42 pm
24Tropheus wrote:The conclusion of that research (I think) is that one species of Mbuna can change sex from female to male based on a couple of individuals in a single trial in cirtain circumstances. We have no idea how common this is or wheather it can be inferred that it can happen in other Mbuna.
Fri Apr 16, 2010 9:01 pm
Fri Apr 16, 2010 9:24 pm
Number6 wrote:24Tropheus wrote:The conclusion of that research (I think) is that one species of Mbuna can change sex from female to male based on a couple of individuals in a single trial in cirtain circumstances. We have no idea how common this is or wheather it can be inferred that it can happen in other Mbuna.
sort of splitting hairs me thinks... sure, you couldn't definitively say that all mbuna have this capability but you have to remember the hypothesis prior to the study and then think about the fact that the species selected turned out to have the trait exactly as expected!
Probability says that there are other mbuna that will share this capability. If I were a betting man, I know what color I'd put my money on!
Sat Apr 17, 2010 12:03 am
I notice in the references Hale, E.A., J.R. Stauffer, Jr., and M.D. Mahaffy. 1998. Exceptions to color being a sexually dimorphic character in Melanochromis auratus (Teleostei: Cichlidae). Ichthyological Exploration of Freshwaters 9: 263-266.. Perhaps that might be worth chasing up to give a good answer to the original post?
Mon Apr 19, 2010 10:34 pm
Mon Apr 19, 2010 11:15 pm
Tue Apr 20, 2010 12:49 am
Tue Apr 20, 2010 11:04 am