@article {1564,
	title = {Costs and the diversification of exaggerated animal structures},
	journal = {Science},
	volume = {291},
	year = {2001},
	month = {Feb},
	pages = {1534-1536},
	abstract = {Sexual selection can favor production of extravagant ornaments and weapons in the contest for access to the opposite sex. Existing explanations for the diversity of sexually selected structures focus on reproductive benefits con- ferred by particular ornament or weapon morphologies. Here, I show that costs of weapon production also may drive patterns of weapon evolution. In beetles, production of horns reduces the size of neighboring morphological structures (antennae, eyes, or wings, depending on the location of the horns), and these tradeoffs reveal unexpected functional associations between ecology and horn morphology. This study illustrates a critical but overlooked role of costs in sexual selection and has implications for understanding the evolution of animal morphology.},
	author = {Emlen, Douglas J.}
}
@article {1915,
	title = {Evolution of mammals and their gut microbes},
	journal = {Science},
	volume = {320},
	year = {2008},
	month = {june},
	pages = {1647-1651},
	abstract = {Mammals are metagenomic in that they are composed of not only their own gene complements but also those of all of their associated microbes. To understand the coevolution of the mammals and their indigenous microbial communities, we conducted a network-based analysis of bacterial 16S ribosomal RNA gene sequences from the fecal microbiota of humans and 59 other mammalian species living in two zoos and in the wild. The results indicate that host diet and phylogeny both influence bacterial diversity, which increases from carnivory to omnivory to herbivory; that bacterial communities codiversified with their hosts; and that the gut microbiota of humans living a modern life-style is typical of omnivorous primates.},
	author = {Ley, Ruth E. and Hamady, Micah and Lozupone, Catherine and Turnbaugh, Peter J. and Ramey, Rob Roy and Bircher, J. Stephen and Schlegel, Michael L. and Tucker, Tammy A. and Schrenzel, Mark D. and Knight, Rob and Gordon, Jeffrey I.}
}
@article {2169,
	title = {Evolutionary biology - Sizing up dung beetle evolution},
	journal = {Science},
	volume = {277},
	number = {5323},
	year = {1997},
	note = {Times Cited: 1Cited Reference Count: 0EnglishEditorial MaterialXK418SCIENCE},
	month = {Jul 11},
	pages = {184-184},
	url = {<Go to ISI>://A1997XK41800025},
	author = {Roush, W.}
}
@article {2231,
	title = {Loss of dung beetles puts ecosystems in deep doo-doo},
	journal = {Science},
	volume = {305},
	number = {5688},
	year = {2004},
	note = {digital copy},
	pages = {1230-1231},
	keywords = {dung beetle, ecosystem services, fragmentation, function, lago guri, Neotropical, response, trond larsen},
	author = {Stokstad, Erik}
}
