From daemon Wed Sep 25 09:00:16 1996 Received: from vms2.macc.wisc.edu by evolution.genetics.washington.edu (5.65v3.2/UW-NDC Revision: 2.23 ) id AA30919; Wed, 25 Sep 1996 09:00:10 -0700 Received: from VMSmail by vms2.macc.wisc.edu; Wed, 25 Sep 96 10:50 CDT Message-Id: <26092510500780@vms2.macc.wisc.edu> Date: Wed, 25 Sep 96 10:50 CDT From: THEODORE GARLAND JR Subject: readings To: JOE@GENETICS.WASHINGTON.EDU X-Vms-To: IN%"joe@genetics.washington.edu" Status: RO 25 Sept. 96 Hi Joe, Here are some suggestions for the comparative method seminar. (1) Papers about what the problem is. Ridley's (1983) book might be useful, maybe the first couple of chapters? I haven't looked at it for a while. Harvey and Mace (1982) might be OK too, although a bit dated. It is all about "taxonomy" as opposed to phylogeny. And, it spends a lot of time on RMA versus least-squares regression issues (an earlier one of Paul's phases ... he does sometimes go off the deep end ...). Before that, an earlier Harvey and Clutton-Brock paper could be useful, probably one of these: Clutton-Brock, T. H., and P. H. Harvey. 1977. Primate ecology and social organization. J. Zool., Lond. 183:1-39. Clutton-Brock, T. H., and P. H. Harvey. 1979. Comparison and adaptation. Proc. R. Soc. Lond. B 205:547-565. Clutton-Brock, T. H., and P. H. Harvey. 1984. Comparative approaches to investigating adaptation. Pages 7-29 in J. R. Krebs and N. B. Davies, eds. Behavioral ecology: An evolutionary approach. 2nd ed. Blackwell, Oxford. 493 pp. I haven't looked at this for a while either, but it might be a good introduction. Be careful, though, because it really does present some of the methods confusingly and even incorrectly (this was still from that awkward time when Paul hadn't completely converted to phylogenetic as opposed to taxonomic thinking). Maybe just use their introductory things. Pagel, M. D., and P. H. Harvey. 1988. Recent developments in the analysis of comparative data. Q. Rev. Biol. 63:413-440. Then how about chapter 2 in Harvey and Pagel (1991)? One thing to watch out for in most of the foregoing is that they emphasize comparative approaches FOR STUDYING ADAPTATION. That usually involves correlating phenotypic variation with environmental variation (sensu lato). Of course, comparative approaches are more generally useful for studying "correlated evolution," e.g., of different aspects of the phenotype. And aspects of the phenotype can show correlated evolution for reasons that have nothing to do with adaptation per se, such as genetic correlation (maybe caused by characters being functionally related, which causes pleiotropic effects) and genetic drift. Sorry, Joe, I don't mean to bring coal to Newcastle, but students often get the wrong (or at least an incomplete) impression from reading the Harvey et al. papers that seem to be hung up on studying adaptation, mainly, I guess, because that's what behavioral ecologists usually want to do! And finally I would use Garland and Adolph (1994). Note, however, that this does not agonize about the problem; rather, it suggests solutions, emphasizing independent contrasts. (2) Papers opposing the contrasts literature. Probably not so much papers by Coddington. But, you might check the following: Coddington, J. A. 1990. Bridges between evolutionary pattern and process. Cladistics 6:379-386. Coddington, J. A. 1992. Avoiding phylogenetic bias. (review of Harvey and Pagel) TREE 7:68-69. Coddington, J. A. 1994. The roles of homology and convergence in studies of adaptation. Pages 53-78 in P. Eggleton and R. I. Vane-Wright, eds. Phylogenetics and ecology. Linnean Society Symposium Series Number 17. Academic Press, London. Craig, C. L., G. D. Bernard, and J. A. Coddington. 1994. Evolutionary shifts in the spectral properties of spider silks. Evolution 48:287- 296. Carpenter, on the other hand, seems more overtly hostile, the most recent expression of which can be found in: Wenzel, J. W., and J. M. Carpenter. 1994. Comparing methods: adaptive traits and tests of adaptation. Pages 79-101 in P. Eggleton and R. I. Vane-Wright, eds. Phylogenetics and ecology. Linnean Society Symposium Series Number 17. Academic Press, London. And the following seems like a fairly direct response to that chapter: Pagel, M. D. 1994. The adaptationist wager. Pages 29-51 in P. Eggleton and R. I. Vane-Wright, eds. Phylogenetics and ecology. Academic Press, London. This paper is kind of interesting, though perhaps a little technical: Bjorklund, M. 1994. The independent contrast method in comparative biology. Cladistics 10:425-433. Finally, note that Garland and Adolph (1994, pp. 817-821) includes a section on "Alternative Views on Hypothesis Testing and Inference: Cladistics contra Statistics." You can imagine where WE stand, of course, but this section tries to explain some of the differences in world views (as charitably as possible ...). Hope that helps. Let me know if you want any clarifications or further suggestions. And, when you finish the semester, I wouldn't mind having a copy of your syllabus or readings list. I am currently using Emilia's book in a graduate seminar. I have only read a few chapters so far, and nothing seems to jump out at me for the needs you described. Cheers, Ted