KHAN, H.R.*; MATSUSHIMA, O.; ALKINDI, A.Y.A.; SALEUDDIN, A.S.M.: Effects of serotonin, FMRFamide-related and vasopressin-related neuropeptides on free amino acid mediated osmoregulation in a pulmonate snail. Osmoregulatory roles of serotonin and FMRFamide-related (FaRPs) in invertebrates have been shown in previous studies. We have studied the effects of serotonin, five FaRPs and three vasopressin-related neuropeptides on free […]

Bernal, D.*; Dickson, K.; Graham, J.: Convergence for high performance swimming in lamnidsharks and tunas. Thermoregulation and metabolic biochemistry. This study documents the shortfin mako shark’s (Isurus oxyrinchus) capacity to thermoregulate and the thermal effects on metabolic enzymes activities and compares the results to tunas. Elasmobranchs and bony fishes have evolved independently for more than […]

HANCOCK, T.V.*; CROCKER, C.E.; GLEESON, T.T.: Contributions to elevated metabolic rates during recovery, the excess post-exercise oxygen consumption (EPOC), in the desert iguana (Dipsosaurus dorsalis). Metabolism remains elevated for some time following vigorous activity in Dipsosaurus. This excess O2 consumption may be quantified as EPOC, a volume of O2 representing metabolic costs of recovery. To […]

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 […]

OKUSU, A: Embryogenesis and Development of Epimenia babai (Mollusca Aplacophora) Comparative studies of embryology and larval development within and among molluscan groups can inform evolutionary analyses of these groups. Aplacophora are small, shell-less, and vermiform molluscs. Given their hypothesized basal position among molluscs, development of aplacophorans may provide the key to answering major outstanding questions […]

WEBSTER, M.: Allometric patterning in trilobite ontogeny: testing for heterochrony in Nephrolenellus Heterochrony, a decoupling between morphological development and ontogenetic time, has been touted as the commonest mode of evolutionary change. Evolutionary change involving modification to the pattern of morphological development cannot be described as a decoupling between morphological development and time. Conservation of the […]

DIAL, K.P; BUNDLE, M.W.; Univ. Montana, Missoula; Univ. Montana, Missoula: Wing-assisted incline running: Accelerometer and force plate data Birds are capable of orienting aerodynamic forces directed toward a sloped substrate, effectively acting like a spoiler on a race car, to improve traction. During wing-assisted incline running (WAIR), the hind limbs of gallinaceous birds generate the […]