Maintenance of Genetic Diversity Despite Population Fluctuations in the Lesser Prairie-Chicken ().

Assessments of genetic diversity, structure, history, and effective population size ( ) are critical for the conservation of imperiled populations. The lesser prairie-chicken () has experienced declines due to habitat loss, degradation, and fragmentation in addition to substantial population fluctuations with unknown effects on genetic diversity. Our objectives were to: (i) compare genetic diversity across three temporally discrete sampling periods (2002, 2007-2010, and 2013-2014) that are characterized by low or high population abundance; (ii) examine genetic diversity at lek and lek cluster spatial scales; (ii) identify potential bottlenecks and characterize genetic structure and relatedness; and (iii) estimate the regional .

Pleistocene-Holocene vicariance, not Anthropocene landscape change, explains the genetic structure of American black bear () populations in the American Southwest and northern Mexico.

The phylogeography of the American black bear () is characterized by isolation into glacial refugia, followed by population expansion and genetic admixture. Anthropogenic activities, including overharvest, habitat loss, and transportation infrastructure, have also influenced their landscape genetic structure. We describe the genetic structure of the American black bear in the American Southwest and northern Mexico and investigate how prehistoric and contemporary forces shaped genetic structure and influenced gene flow.

The best of both worlds: Combining lineage-specific and universal bait sets in target-enrichment hybridization reactions.

Premise: Researchers adopting target-enrichment approaches often struggle with the decision of whether to use universal or lineage-specific probe sets. To circumvent this quandary, we investigate the efficacy of a simultaneous enrichment by combining universal probes and lineage-specific probes in a single hybridization reaction, to benefit from the qualities of both probe sets with little added cost or effort.

Methods And Results: Using 26 Brassicaceae libraries and standard enrichment protocols, we compare results from three independent data sets.

The evolution of bequeathal in stable habitats.

Adults sometimes disperse, while philopatric offspring inherit the natal site, a pattern known as . Despite a decades-old empirical literature, little theoretical work has explored when natural selection may favor bequeathal. We present a simple mathematical model of the evolution of bequeathal in a stable environment, under both global and local dispersal.

Phylogeographic patterns in the Philippine archipelago influence symbiont diversity in the bobtail squid mutualism.

Marine microbes encounter a myriad of biotic and abiotic factors that can impact fitness by limiting their range and capacity to move between habitats. This is especially true for environmentally transmitted bacteria that cycle between their hosts and the surrounding habitat. As geologic history, biogeography, and other factors such as water temperature, salinity, and physical barriers can inhibit bacterial movement to novel environments, we chose to examine the genetic architecture of (Mollusca: Cephalopoda) and their symbionts in the Philippine archipelago using a combined phylogeographic approach.