581 research outputs found

    Notes on Polyphylia Harris with a description of a new species (Coleoptera: Scarabaeidae: Melolonthinae)

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    Polyphylla aeolus La Rue, new species, is described from the Kelso Sand Dunes, Mojave Desert, San Bernardino County, California, U.S.A. Illustrations of dorsal habitus, significant morphological details, and adult genitalic forms are provided. A description of the type locality including geographical and ecological parameters is presented. Taxonomic problems within the genus and limitations of recently proposed methods of species identification are discussed. A modified key is provided to distinguish the new species. The heretofore undescribed females of Polyphylla anteronivea Hardy, P. mescalerensis Young, P. nubila Van Dyke, and P. pottsorum Hardy, are described. The larval host of P. erratica Hardy is reported, and the adult female is redescribed from pristine specimens. A dorsal habitus illustration of each female is provided. Bionomic and distributional data are presented for Polyphylla avittata Hardy, P. cavifrons LeConte, P. hirsuta Van Dyke, P. monahansensisHardy, P. petiti Guerin, P. stellata Young, andP. squamiventris Cazier

    The grading of earth roads

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    "December 1, 1923.

    Natural history, ecology, and conservation of the genus \u3ci\u3ePolyphylla\u3c/i\u3e Harris, 1841. 1. New species from the southwestern United States and Baja California, Mexico, with notes on distribution and synonymy (Coleoptera: Scarabaeidae: Melolonthinae)

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    Four new species of the genus Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) from the southwestern United States and Baja California, Mexico, are described and illustrated: Polyphylla anivallis, P. koso, P. morroensis, and P. socorriana. Two nomenclatural changes are proposed: Polyphylla ratcliffei Young is placed into synonymy with P. avittata Hardy and Andrews, new synonymy; P. uteana Tanner is removed from synonymy and reinstated as a valid species, reinstated status. The females of P. monahansensis Hardy and Andrews and P. stellata Young are described and illustrated. New distributional records and ecological associations are amended for P. avittata Hardy and Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), and P. rugosipennis Casey. A checklist of the “Western Clade” species of Polyphylla, north of Mexico, is included. Cuatro especies nuevas del gĂ©nero Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) del suroeste de los Estados Unidos y Baja California, MĂ©xico, se describen e ilustran: Polyphylla anivallis, P. koso, P. morroensis, y P. socorriana. Se proponen dos cambios de nomenclatura: Polyphylla ratcliffei Young se coloca en sinonimia con P. avittata Hardy y Andrews, nueva sinonimia; P. uteana Tanner es removido de la sinonimia y reinstalado como una especie vĂĄlida, estado reinstalado. Las hembras de P. monahansensis Hardy y Andrews y P. stellata Young se describen e ilustran. Nuevos registros de distribuciĂłn y asociaciones ecolĂłgicas se complementan para P. avittata Hardy y Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), y P. rugosipennis Casey. Se incluye una lista de las especies del “Clado Occidental” de Polyphylla, al norte de MĂ©xico

    Natural history, ecology, and conservation of the genus \u3ci\u3ePolyphylla\u3c/i\u3e Harris, 1841. 1. New species from the southwestern United States and Baja California, Mexico, with notes on distribution and synonymy (Coleoptera: Scarabaeidae: Melolonthinae)

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    Four new species of the genus Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) from the southwestern United States and Baja California, Mexico, are described and illustrated: Polyphylla anivallis, P. koso, P. morroensis, and P. socorriana. Two nomenclatural changes are proposed: Polyphylla ratcliffei Young is placed into synonymy with P. avittata Hardy and Andrews, new synonymy; P. uteana Tanner is removed from synonymy and reinstated as a valid species, reinstated status. The females of P. monahansensis Hardy and Andrews and P. stellata Young are described and illustrated. New distributional records and ecological associations are amended for P. avittata Hardy and Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), and P. rugosipennis Casey. A checklist of the “Western Clade” species of Polyphylla, north of Mexico, is included. Cuatro especies nuevas del gĂ©nero Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) del suroeste de los Estados Unidos y Baja California, MĂ©xico, se describen e ilustran: Polyphylla anivallis, P. koso, P. morroensis, y P. socorriana. Se proponen dos cambios de nomenclatura: Polyphylla ratcliffei Young se coloca en sinonimia con P. avittata Hardy y Andrews, nueva sinonimia; P. uteana Tanner es removido de la sinonimia y reinstalado como una especie vĂĄlida, estado reinstalado. Las hembras de P. monahansensis Hardy y Andrews y P. stellata Young se describen e ilustran. Nuevos registros de distribuciĂłn y asociaciones ecolĂłgicas se complementan para P. avittata Hardy y Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), y P. rugosipennis Casey. Se incluye una lista de las especies del “Clado Occidental” de Polyphylla, al norte de MĂ©xico

    Natural history, ecology, and conservation of the genus \u3ci\u3ePolyphylla\u3c/i\u3e Harris, 1841. 1. New species from the southwestern United States and Baja California, Mexico, with notes on distribution and synonymy (Coleoptera: Scarabaeidae: Melolonthinae)

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    Four new species of the genus Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) from the southwestern United States and Baja California, Mexico, are described and illustrated: Polyphylla anivallis, P. koso, P. morroensis, and P. socorriana. Two nomenclatural changes are proposed: Polyphylla ratcliffei Young is placed into synonymy with P. avittata Hardy and Andrews, new synonymy; P. uteana Tanner is removed from synonymy and reinstated as a valid species, reinstated status. The females of P. monahansensis Hardy and Andrews and P. stellata Young are described and illustrated. New distributional records and ecological associations are amended for P. avittata Hardy and Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), and P. rugosipennis Casey. A checklist of the “Western Clade” species of Polyphylla, north of Mexico, is included. Cuatro especies nuevas del gĂ©nero Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) del suroeste de los Estados Unidos y Baja California, MĂ©xico, se describen e ilustran: Polyphylla anivallis, P. koso, P. morroensis, y P. socorriana. Se proponen dos cambios de nomenclatura: Polyphylla ratcliffei Young se coloca en sinonimia con P. avittata Hardy y Andrews, nueva sinonimia; P. uteana Tanner es removido de la sinonimia y reinstalado como una especie vĂĄlida, estado reinstalado. Las hembras de P. monahansensis Hardy y Andrews y P. stellata Young se describen e ilustran. Nuevos registros de distribuciĂłn y asociaciones ecolĂłgicas se complementan para P. avittata Hardy y Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), y P. rugosipennis Casey. Se incluye una lista de las especies del “Clado Occidental” de Polyphylla, al norte de MĂ©xico

    Natural history, ecology, and conservation of the genus \u3ci\u3ePolyphylla\u3c/i\u3e Harris, 1841. 1. New species from the southwestern United States and Baja California, Mexico, with notes on distribution and synonymy (Coleoptera: Scarabaeidae: Melolonthinae)

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    Four new species of the genus Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) from the southwestern United States and Baja California, Mexico, are described and illustrated: Polyphylla anivallis, P. koso, P. morroensis, and P. socorriana. Two nomenclatural changes are proposed: Polyphylla ratcliffei Young is placed into synonymy with P. avittata Hardy and Andrews, new synonymy; P. uteana Tanner is removed from synonymy and reinstated as a valid species, reinstated status. The females of P. monahansensis Hardy and Andrews and P. stellata Young are described and illustrated. New distributional records and ecological associations are amended for P. avittata Hardy and Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), and P. rugosipennis Casey. A checklist of the “Western Clade” species of Polyphylla, north of Mexico, is included. Cuatro especies nuevas del gĂ©nero Polyphylla Harris (Coleoptera: Scarabaeidae: Melolonthinae) del suroeste de los Estados Unidos y Baja California, MĂ©xico, se describen e ilustran: Polyphylla anivallis, P. koso, P. morroensis, y P. socorriana. Se proponen dos cambios de nomenclatura: Polyphylla ratcliffei Young se coloca en sinonimia con P. avittata Hardy y Andrews, nueva sinonimia; P. uteana Tanner es removido de la sinonimia y reinstalado como una especie vĂĄlida, estado reinstalado. Las hembras de P. monahansensis Hardy y Andrews y P. stellata Young se describen e ilustran. Nuevos registros de distribuciĂłn y asociaciones ecolĂłgicas se complementan para P. avittata Hardy y Andrews, P. cavifrons LeConte, P. concurrens Casey, P. crinita LeConte, P. diffracta Casey, P. mescalerensis Young, P. petitii (GuĂ©rin-MĂ©neville), y P. rugosipennis Casey. Se incluye una lista de las especies del “Clado Occidental” de Polyphylla, al norte de MĂ©xico

    Multi-conjugate adaptive optics with hybrid laser beacon systems

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    Results for a multi-conjugate adaptive optical (MCAO) system with multiple laser beacons at multiple altitudes are presented in this paper. The use of multi-conjugate deformable mirrors (DM's) increases the corrected field of view of an adaptive optical telescope system. This improves the imaging capability for extended astronomical objects such as planets, galaxies, and nebulae. Multiple laser beacons, as opposed to multiple natural guide stars, are needed to achieve a useful degree of sky coverage. The use of laser beacons at multiple altitudes in a hybrid laser beacon configuration has been shown in previous papers to reduce both focus and tilt anisoplanatism. In this study we combine all three of these aspects. The hybrid beacon scenarios used in this study consists of multiple high altitude sodium beacons at 90 km and/or multiple low altitude Rayleigh beacons at 10 to 20 km. We present results for an 8-m class telescope for 2 and 3 different DM conjugate altitudes. For each of these MCAO configurations the following parameters are varied: number of Rayleigh beacons, number of Rayleigh beacon wavefront sensor (WFS) subapertures, Rayleigh beacon altitudes for the Rayleigh/sodium configuration, number of natural beacons for tip/tilt correction, and number of natural beacon WFS subapertures. When the WFS subaperture for the natural beacon is greater than 1 x 1 it contributes to the higher order correction in addition to being used for tip/tilt correction. Results are compared in terms of Strehl Ratio for the J, H, and K band

    Proteins Involved in the Trafficking and Functional Synaptic Expression of AMPA and KA Receptors

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    α-Amino-3-hydroxy-5-methylisoxazolepropionate receptors (AMPARs) mediate the majority of fast synaptic transmission in the mammalian central nervous system, play a central role in synapse stabilisation and plasticity, and their prolonged activation is potently neurotoxic. The functional roles of kainate receptors (KARs) are less well defined but they play a role in some forms of synaptic plasticity. Both receptor types have been shown to be highly developmentally and activity-dependently regulated and their functional synaptic expression is under tight cellular regulation. The molecular and cellular mechanisms that regulate the synaptic localisation and functional expression of AMPARs and KARs are objects of concerted research. There has been significant progress towards elucidating some of the processes involved with the discovery of an array of proteins that selectively interact with individual AMPAR and KAR subunits. These proteins have been implicated in, among other things, the regulation of post-translational modification, targeting and trafficking, surface expression, and anchoring. The aim of this review is to present an overview of the major interacting proteins and suggest how they may fit into the hierarchical series of events controlling the trafficking of AMPARs and KARs

    AMPHIBIAN RESPONSE TO A LARGE-SCALE HABITAT RESTORATION IN THE PRAIRIE POTHOLE REGION

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    Over the next half-century, scientists anticipate that nearly one third of the currently recognized 7,450 amphibian species will become extinct. Many organizations have responded to the challenge of conserving amphibian biodiversity, some indirectly. Under the auspices of the Iowa Great Lakes Management Plan, the United States Fish and Wildlife Service, Department of Natural Resources, and their partners have been implementing habitat restoration efforts designed to protect water quality, provide recreational opportunities, and benefit wildlife at the regional level. With this program, over 130 wetlands have been created in the past 30 years on recently purchased public lands—one of the largest wetland restoration projects conducted in the Prairie Pothole Region of the Great Plains. While amphibians were not the main target of these restorations, we show that in response, 121 new breeding populations of native Northern Leopard Frogs (Lithobates pipiens; n = 80) and Eastern Tiger Salamanders (Ambystoma tigrinum; n = 41) have been established; in addition, we found 19 populations of non-native American Bullfrogs (L. catesbeianus). Using the program PRESENCE, we show that leopard frog occupancy was greatest in newer (<18 years old), intermediate-sized wetlands, and that tiger salamander occupancy was greatest in small wetlands without fish and larval bullfrogs. These data imply that because native amphibians responded positively to these newly established wetlands, habitat availability has likely been a factor in limiting population numbers. Further, these data suggest the presence of fishes and introduced bullfrogs interferes with the ability of tiger salamanders to colonize restored wetlands
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