8 Works

Ignorance is not bliss: Evolutionary naïveté in an endangered desert fish and implications for conservation

Craig Stockwell, Craig Stockwell, Madison Schmelzer, Bailey Gillis, Cody Anderson & Brian Wisenden
Predator naiveté has been invoked to explain the impacts of non-native predators on isolated populations that evolved with limited predation. Such impacts have been repeatedly observed for the endangered Pahrump poolfish, Empetrichthys latos, a desert fish species that evolved in isolation since the end of the Pleistocene. We tested Pahrump poolfish anti-predator responses to conspecific chemical alarm cues released from damaged epidermal tissue in terms of fish activity and water column position. Pahrump poolfish behavioural...

Effects of temperature and wildflowers on survival and macronutrient stores of the alfalfa leafcutting bee under extended cold storage

Mia Park, Casey Delphia, Cassandra Prince, George Yocum, Joseph Rinehart, Kevin O'Neill, Laura Burkle, Julia Bowsher & Kendra Greenlee
Megachile rotundata (F.) is an important pollinator of alfalfa in the United States. Enhancing landscapes with wildflowers is a primary strategy for conserving pollinators and may improve sustainability of M. rotundata. Changing cold storage temperatures from a traditionally static thermal regime (STR) to a fluctuating thermal regime (FTR) improves overwintering success and extends M. rotundata’s shelf life and pollination window. Whether floral resources enhance overwintering survival and/or interact with thermal regime are unknown. With these...

Spatially discrete disturbance processes enhance grassland floral resources

Cameron Duquette, Torre Hovick, Benjamin Geaumont, Jason Harmon, Ryan Limb & Kevin Sedivec
Grasslands provide essential floral resources for both managed and wild pollinators. However, grassland flowers in remaining native landscapes are threatened due to nonnative plant invasions and alterations to historic disturbance regimes such as fire and grazing. The potential for managed disturbance to promote grassland floral resources remains unclear. Fire and grazing historically occurred interactively, but uniform application of each may be a detriment to floral resources and the pollinators depending on them. Though fire can...

Assessment of biogeographic variation in traits of Lewis flax (Linum lewisii) for use in restoration and agriculture

Peter Innes, André Gossweiler, Scott Jensen, Derek Tilley, Loren St. John, Thomas Jones, Stanley Kitchen & Brent S. Hulke
Lewis flax (Linum lewisii) is widely distributed across western North America and is currently used in native ecosystem restoration. There is also growing interest in de novo domestication of Lewis flax as a perennial oilseed crop. To better understand this species and facilitate both restoration and domestication, we used common gardens to assess bio-geographical variation in a variety of seed and growth traits from 37 flax accessions, consisting of 35 wild populations from the Intermountain...

Megachile rotundata overwintering nCounter gene expression

Lizzette Cambron, George Yocum, Kathleen Yeater & Kendra Greenlee
Within the United States and Canada, the primary pollinator of alfalfa is the alfalfa leafcutting bee (ALCB), Megachile rotundata. Our previous findings showed that overwintering conditions impacted gene expression profile in ALCB prepupae that entered diapause early in the season. However, ALCB are a bivoltine species, which begs the question of whether bees entering diapause later in the season also show this trend. To better understand the effects of the timing of diapause initiation, we...

Pahrump Poolfish antipredator behavior

Craig Stockwell
Predator naïveté has been invoked to explain the impacts of non-native predators on isolated populations that evolved with limited predation. Such impacts have been repeatedly observed for the endangered Pahrump Poolfish, Empetrichthys latos, a desert species that evolved in isolation since the end of the Pleistocene. We tested poolfish for anti-predator responses to conspecific chemical alarm cues released from damaged epithelial tissue versus responses to distilled water as a control. Poolfish did not respond to...

Rapid evolutionary divergence of a songbird population following recent colonization of an urban area

Guillermo Friis, Jonathan Atwell, Adam Fudickar, Timothy Greives, Pamela Yeh, Trevor Price, Ellen Ketterson & Borja Milá
Colonization of a novel environment by a small group of individuals can lead to rapid evolutionary change, yet evidence of the relative contributions of neutral and selective factors in promoting divergence during the early stages of colonization remain scarce. Here, we use genome-wide SNP data to test the role of neutral and selective forces in driving the divergence of a unique urban population of the Oregon junco (Junco hyemalis oreganus), which became established on the...

Survival of extreme heat related to circadian cycle and sex in bees

Giancarlo Lopez-Martinez
The pollination services provided by insects have been a crucial part of evolution and survival for many species, including humans. For bees to be efficient pollinators they must survive the environmental insults they face daily. Thus, looking into the short- and long-term effects of heat exposure on bee performance provides us with a foundation for investigating how stress can affect insect pollination. Solitary bees are a great model for investigating the effects of environmental stress...

Registration Year

  • 2022
    8

Resource Types

  • Dataset
    8

Affiliations

  • North Dakota State University
    8
  • Edward T. Schafer Agricultural Research Center
    3
  • New York University Abu Dhabi
    1
  • Indiana University
    1
  • United States Department of Agriculture
    1
  • University of Chicago
    1
  • Agricultural Research Service
    1
  • Spanish National Research Council
    1
  • University of Colorado Boulder
    1
  • Montana State University
    1