Conservation evo-devo: preserving biodiversity by understanding its origins

Unprecedented rates of species extinction increase the urgency for effective conservation biology management practices. Thus, any improvements in practice are vital and we suggest that conservation can be enhanced through recent advances in evolutionary biology, specifically advances put forward by evolutionary developmental biology (i.e., evo-devo). There are strong overlapping conceptual links between conservation and evo-devo whereby both fields focus on evolutionary potential. In particular, benefits to conservation can be derived from some of the main areas of evo-devo research, namely phenotypic plasticity, modularity and integration, and mechanistic investigations of the precise developmental and genetic processes that determine phenotypes. Using examples we outline how evo-devo can expand into conservation biology, an opportunity which holds great promise for advancing both fields

Dead Center: Polarization and the Democratic Party, 1932-2000

Polarization forced massive changes in the institutions of Washington throughout the 20th century, and the Democratic Party played a key role throughout. Under President Franklin D. Roosevelt, the Democratic Party formed the powerful New Deal coalition. The coalition faltered in the turbulent 1960s under the pressures of the Vietnam War and racial unrest. The chaotic 1968 Democratic National Convention in Chicago dealt the coalition a mortal wound. Young voters and activists gained an outsized voice in the party. Several crushing defeats in presidential elections followed as the party chose unelectable candidates who appealed to the passions of left-wing activists and interests. In 1992, Bill Clinton won the nomination and forced the party back to the center. Clinton’s success, however, drove the Republican Party further right as its efforts to destroy Clinton grew increasingly obsessive. The cumulative effect has been an increase in polarization and the weakening of institutions in Washington

Fifty Years of Legal Gambling in Canada: So What?

As most of my published papers on gambling in Canada have tended to declare at the outset, a 1969 amendment to the Canadian Criminal Code opened the door to a major transformation in the legal status of gambling in Canada. Prior to this amendment, pari-mutuel wagering on horse racing at race tracks was the only form of gambling legally permitted. Nonetheless, other forms of gambling such as charitable bingos and raffles for the purpose of raising funds for worthy community causes were operated in a grey and fuzzy area of criminal law. Thus, policing authorities through the 20th century often found themselves stymied by the ironic situation of willingly turning a blind eye to formally illegal bingos and raffles organized, conducted and participated in by upstanding members of their communities. Consequently, police authorities in Canada clamoured for greater clarity in the criminal law pertaining to gambling generally. The 1969 amendment was a political endeavor, not only to provide needed clarity but to modernize the law in keeping with changing public moral sentiments toward gambling. The 1969 amendment thus opened the door to legalized charitable “lottery schemes” for the purpose of fundraising in aid of worthy causes. It also opened the door to large-scale lotteries as long as they were “managed and conducted” by Canadian provincial governments

Recent Amendments to Canadian Lottery and Gaming Laws: The Transfer of Power between Federal and Provincial Governments

Through an examination of recent amendments to the lottery and gaming provisions of the Criminal Code and of the law reform process involved in those amendments, this article demonstrates the unique structure of Canadian gaming laws and challenges the constitutional validity of provincial regulation as an interdelegation of power

Solar sail formation flying for deep-space remote sensing

In this paper we consider how 'near' term solar sails can be used in formation above the ecliptic plane to provide platforms for accurate and continuous remote sensing of the polar regions of the Earth. The dynamics of the solar sail elliptical restricted three-body problem (ERTBP) are exploited for formation flying by identifying a family of periodic orbits above the ecliptic plane. Moreover, we find a family of 1 year periodic orbits where each orbit corresponds to a unique solar sail orientation using a numerical continuation method. It is found through a number of example numerical simulations that this family of orbits can be used for solar sail formation flying. Furthermore, it is illustrated numerically that Solar Sails can provide stable formation keeping platforms that are robust to injection errors. In addition practical trajectories that pass close to the Earth and wind onto these periodic orbits above the ecliptic are identified

Optical Breath Gas Extravehicular Activity Sensor for the Advanced Portable Life Support System

The infrared gas transducer used during extravehicular activity (EVA) in the extravehicular mobility unit (EMU) measures and reports the concentration of carbon dioxide (CO2) in the ventilation loop. It is nearing its end of life and there are a limited number remaining. Meanwhile, the next generation advanced portable life support system (PLSS) now being developed requires CO2 sensing technology with performance beyond that presently in use. A laser diode (LD) spectrometer based on wavelength modulation spectroscopy (WMS) is being developed to address both applications by Vista Photonics, Inc. Accommodation within space suits demands that optical sensors meet stringent size, weight, and power requirements. Version 1.0 devices were delivered to NASA Johnson Space Center (JSC) in 2011. The sensors incorporate a laser diode based CO2 channel that also includes an incidental water vapor (humidity) measurement. The prototypes are controlled digitally with a field-programmable gate array (FPGA)/microcontroller architecture. Version 2.0 devices with improved electronics and significantly reduced wetted volumes were delivered to JSC in 2012. A version 2.5 upgrade recently implemented wavelength stabilized operation, better humidity measurement, and much faster data analysis/reporting. A wholly reconfigured version 3.0 will maintain the demonstrated performance of earlier versions while being backwards compatible with the EMU and offering a radiation tolerant architecture

The Thermal Electrical Conductivity Probe (TECP) for Phoenix

The Thermal and Electrical Conductivity Probe (TECP) is a component of the Microscopy, Electrochemistry, and Conductivity Analyzer (MECA) payload on the Phoenix Lander. TECP will measure the temperature, thermal conductivity and volumetric heat capacity of the regolith. It will also detect and quantify the population of mobile H2O molecules in the regolith, if any, throughout the polar summer, by measuring the electrical conductivity of the regolith, as well as the dielectric permittivity. In the vapor phase, TECP is capable of measuring the atmospheric H2O vapor abundance, as well as augment the wind velocity measurements from the meteorology instrumentation. TECP is mounted near the end of the 2.3 m Robotic Arm, and can be placed either in the regolith material or held aloft in the atmosphere. This paper describes the development and calibration of the TECP. In addition, substantial characterization of the instrument has been conducted to identify behavioral characteristics that might affect landed surface operations. The greatest potential issue identified in characterization tests is the extraordinary sensitivity of the TECP to placement. Small gaps alter the contact between the TECP and regolith, complicating data interpretation. Testing with the Phoenix Robotic Arm identified mitigation techniques that will be implemented during flight. A flight model of the instrument was also field tested in the Antarctic Dry Valleys during the 2007-2008 International Polar year.

Evolvability under climate change: bone development and shape plasticity are heritable and correspond with performance in Arctic charr (Salvelinus alpinus)

Environmental conditions can impact the development of phenotypes and in turn the performance of individuals. Climate change, therefore, provides a pressing need to extend our understanding of how temperature will influence phenotypic variation. To address this, we assessed the impact of increased temperatures on ecologically significant phenotypic traits in Arctic charr (Salvelinus alpinus). We raised Arctic charr at 5°C and 9°C to simulate a predicted climate change scenario and examined temperature-induced variation in ossification, bone metabolism, skeletal morphology, and escape response. Fish reared at 9°C exhibited less cartilage and bone development at the same developmental stage, but also higher bone metabolism in localized regions. The higher temperature treatment also resulted in significant differences in craniofacial morphology, changes in the degree of variation, and fewer vertebrae. Both temperature regime and vertebral number affected escape response performance, with higher temperature leading to decreased latency. These findings demonstrate that climate change has the potential to impact development through multiple routes with the potential for plasticity and the release of cryptic genetic variation to have strong impacts on function through ecological performance and survival