Elisa Weatherby - Academia.edu (original) (raw)
Papers by Elisa Weatherby
Animal Behaviour, 2007
Animals commonly leave scent messages by depositing pheromones, faeces, or urine. The intensity o... more Animals commonly leave scent messages by depositing pheromones, faeces, or urine. The intensity of a chemical message may fade over time, but the 'intention' remains the same. We argue that house flies, Musca domestica (Diptera: Muscidae), require a message with evolving (sensu changing over time) information content. Gravid females reportedly deploy a pheromone that induces concerted oviposition so that many even-aged larvae ameliorate the resource, such as animal manure. However, continued oviposition by late-arriving females may result in age disparity and cannibalism of larval offspring. Thus, we predicted that house flies have a type of cue that evolves from oviposition induction to inhibition some time after eggs are deposited on a resource. Here we show (1) the existence of such evolving ovipositional cues, (2) the adverse fitness consequences that accrue from ignoring the inhibitory cues and (3) the mechanism by which these cues evolve. The evolving cues depend upon a key bacterial strain, Klebsiella oxytoca, which originates with female M. domestica and which proliferates over time on the surface of deposited eggs. At a threshold density of this strain, further oviposition is inhibited. By deploying such evolving cues, female M. domestica can visit an oviposition site just once and deposit cues that will mediate immediate oviposition induction followed by delayed inhibition, thereby ensuring conditions conducive for offspring development.
It is our pleasure and privilege to invite you to participate in the 22nd John K. Friesen Confere... more It is our pleasure and privilege to invite you to participate in the 22nd John K. Friesen Conference, this year on the topic "Taboo Topics in Residential Care." The Simon Fraser University Gerontology Research Centre (GRC) and the associated Gerontology Department in cooperation with Fraser Health, the Public Guardian and Trustee of British Columbia, the Seniors' Directorate, Ministry of Health, Province of British Columbia and Vancouver Coastal Health have brought together a group of Canadian experts in residential care policy, practice and research to address such difficult-to-dealwith issues as resident-resident aggression; theft and financial exploitation in institutional settings; alcohol, drug and tobacco use and abuse; sexuality; and dying and death. The conference will also discuss when it is and is not appropriate to use physical and/or chemical restraints and anti-psychotic medications. The conference also features a public lecture that will present a national perspective on elder abuse in Canada. The objective of the conference is not just to raise awareness of these issues but also to identify steps that are or should be taken to safeguard the health, safety and well-being of residents of long term care facilities and those who care for them-both today and for the future.
Pharmacy practice in the intensive care unit (ICU) is complex, because of the high acuity of pati... more Pharmacy practice in the intensive care unit (ICU) is complex, because of the high acuity of patients ’ conditions and the large number of medications prescribed. Therefore, many pharmacists, especially those not familiar with ICU care, may feel overwhelmed and apprehensive in this setting. There is
The Canadian Journal of Hospital Pharmacy, 2011
Animal Behaviour, 2007
Animals commonly leave scent messages by depositing pheromones, faeces, or urine. The intensity o... more Animals commonly leave scent messages by depositing pheromones, faeces, or urine. The intensity of a chemical message may fade over time, but the 'intention' remains the same. We argue that house flies, Musca domestica (Diptera: Muscidae), require a message with evolving (sensu changing over time) information content. Gravid females reportedly deploy a pheromone that induces concerted oviposition so that many even-aged larvae ameliorate the resource, such as animal manure. However, continued oviposition by late-arriving females may result in age disparity and cannibalism of larval offspring. Thus, we predicted that house flies have a type of cue that evolves from oviposition induction to inhibition some time after eggs are deposited on a resource. Here we show (1) the existence of such evolving ovipositional cues, (2) the adverse fitness consequences that accrue from ignoring the inhibitory cues and (3) the mechanism by which these cues evolve. The evolving cues depend upon a key bacterial strain, Klebsiella oxytoca, which originates with female M. domestica and which proliferates over time on the surface of deposited eggs. At a threshold density of this strain, further oviposition is inhibited. By deploying such evolving cues, female M. domestica can visit an oviposition site just once and deposit cues that will mediate immediate oviposition induction followed by delayed inhibition, thereby ensuring conditions conducive for offspring development.
It is our pleasure and privilege to invite you to participate in the 22nd John K. Friesen Confere... more It is our pleasure and privilege to invite you to participate in the 22nd John K. Friesen Conference, this year on the topic "Taboo Topics in Residential Care." The Simon Fraser University Gerontology Research Centre (GRC) and the associated Gerontology Department in cooperation with Fraser Health, the Public Guardian and Trustee of British Columbia, the Seniors' Directorate, Ministry of Health, Province of British Columbia and Vancouver Coastal Health have brought together a group of Canadian experts in residential care policy, practice and research to address such difficult-to-dealwith issues as resident-resident aggression; theft and financial exploitation in institutional settings; alcohol, drug and tobacco use and abuse; sexuality; and dying and death. The conference will also discuss when it is and is not appropriate to use physical and/or chemical restraints and anti-psychotic medications. The conference also features a public lecture that will present a national perspective on elder abuse in Canada. The objective of the conference is not just to raise awareness of these issues but also to identify steps that are or should be taken to safeguard the health, safety and well-being of residents of long term care facilities and those who care for them-both today and for the future.
Pharmacy practice in the intensive care unit (ICU) is complex, because of the high acuity of pati... more Pharmacy practice in the intensive care unit (ICU) is complex, because of the high acuity of patients ’ conditions and the large number of medications prescribed. Therefore, many pharmacists, especially those not familiar with ICU care, may feel overwhelmed and apprehensive in this setting. There is
The Canadian Journal of Hospital Pharmacy, 2011