LARSON, Peter M.; REILLY, Stephen M.: Functional morphology of feeding and gill irrigation in the anuran tadpole: Electromyography and muscle function in larval Rana catesbeiana This study provides the first data on in vivo muscle activity patterns during feeding in a larval anuran. Data from unanaesthetized, unrestrained animals are also provided to verify results presented […]

FRAZIER, M.*; HUEY, R.B.; BERRIGAN, D.: Thermal Dependence of Darwinian Fitness in Insects: Biogeographic Patterns Latitudinal patterns in the temperature sensitivity of diverse physiological and life history traits are widely documented. However, latitudinal patterns of the thermal dependence of Darwinian fitness have never been described. So we are compiling a database of studies (so far […]

HUEY, R.B.*; GILCHRIST, G.W.; BALANYA, J.; PASCUAL, M.; SERRA, L.: Rapid Evolution Redux: a Size Cline in South American Populations of an Introduced Fly The introduction and rapid spread of the fly Drosophila subobscura along the west coasts of both North and South America just over two decades ago provide a remarkable opportunity to evaluate […]

PFENNIG, D.W.: Polyphenism and the Ecological Origins of Diversity What are the causes of phenotypic diversity? A leading hypothesis is that divergent selection resulting from competition promotes diversification among coexisting species. This hypothesis is difficult to test, however, because there may be a long time lag between the introduction of a competitor and the evolutionary […]

RISSLER, LJ: Ecology and Phylogenetics of Salamanders Across the Eastern Continental Divide I combined ecological experiments and phylogenetic comparisons to understand how species interactions and ecology impact patterns of species distributions and genetic variance across the Eastern Continental Divide (ECD). Tributaries separated by the ECD are completely isolated via aquatic routes that either flow into […]

WYNGAARD*, GA; DOMANGUE, R; GERKEN, S; RASCH, EM: A Mechanistic Role for Chromatin Diminution in the Evolution of Genome Size and Life History Characteristics in Zooplankton We propose a mechanistic explanation of how variation in large scale features of the genome are translated into life history variation at the organismal level in freshwater cyclopoids (Crustacea: […]

LINDBERG, D. R. *; GURALNICK, R. P.: The Evolution of Early Development in Gastropod Molluscs Cell lineage data for 30 exemplar gastropod taxa representing all higher taxa and the outgroups Scaphopoda and Polyplacophora were examined for phylogenetic signal. Most cell lineages show phyletic trends of accelerating or retarding their formation relative to one or more […]

KAPLAN, P: Ontogenetic and evolutionary dynamics of shape disparity in the trilobite arthropod Phacops Patterns of disparity are traditionally described from adult morphologies. Adding an ontogenetic dimension can take us beyond describing patterns to explaining them. Such explanations require comparative studies of ontogeny. These comparisons tell us which ontogenetic parameters differ, but they lack explicit […]

MINSUK, S.B.*; RAFF, R.A.: Inductive Signals Initiating Adult Body Plan Development in Echinoderms The echinoderm juvenile develops within the larval body, with its own set of radially symmetric adult axes entirely separate from the larva’s bilateral ones. Clearly, echinoderm ontogeny has undergone major evolutionary changes since the bilaterally symmetric ancestor. But little is known about […]

GELLER, J.B.: Evolution of clonality and symbiosis in sea anemones (Anthopleura): phylogenetic and functional genomic approaches. Clonality and symbiosis, widespread traits among marine invertebrates, are usually evolutionarily conserved in genera of marine invertebrates. Sea anemones in the genus Anthopleura, however, contain members with that lack one or both of these traits. Anthopleura is thus an […]