Phenology and Voltinism of Emerald Ash Borer (Coleoptera: Buprestidae) in Central North Carolina.

The emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), has killed millions of ash (Fraxinus spp.) trees across North America. Classical biological control using introductions of parasitoid wasps may provide a sustainable approach to managing this invasive insect. However, the establishment of parasitoids in the southern United States has been difficult. The phenology of emerald ash borer was studied in central North Carolina to inform biological control efforts that better align with the seasonal availability of susceptible emerald ash borer life stages in the warm climate of this region. Biweekly emerald ash borer life stage assessments were conducted in stands of infested green ash (Fraxinus pennsylvanica Marshall, Lamiales: Oleaceae) over 26 consecutive months (June 2019 through August 2021). Adult trapping was also conducted in these stands in the spring and summer of 2019, 2020, and 2021. Based on these collections, emerald ash borer exhibits a univoltine (1-yr) life cycle. Parasitoid-susceptible larvae (third and fourth instars in galleries) are present from late June through October (~1,100-3,000 degree days base 10ºC) and are mostly absent during the remainder of the year. Parasitoid release timings and the life history of selected parasitoid species should be aligned with this window of host availability to be effective. This characterization of emerald ash borer phenology and voltinism will help improve the timing and effectiveness of management efforts as this forest pest continues to spread in southern North America.

Engagement in Nonbiomedical Practices for Fertility Enhancement: A Scoping Review.

Objectives: This scoping review aims to (1) describe the scope and coverage of the body of literature on nonbiomedical practices used for enhancing fertility, (2) summarize and map the existing evidence on the extent and types of nonbiomedical practices used, and (3) examine how the research on this topic has been conducted with particular attention paid to how participants are asked about their use of nonbiomedical practices for fertility enhancement. Design: We conducted a scoping review by which four databases were searched (PubMed, Psychinfo, Socindex, and CINHAL). Articles were screened for inclusion by two researchers through a title and abstract screening followed by a full-text screening. Data were extracted from included articles and results summarized and compared across studies and regions. Results: A total of 32 studies were identified from 16 countries in five regions of the world. The majority of studies were clinic-based, primarily recruiting participants from fertility clinics in urban and suburban areas. More than half of the studies included only women, a few studies included only men, and the remainder of studies included both men and women. Most quantitative studies reported the prevalence of nonbiomedical practice use, which ranged from 8% to 83%; however, there was variation across studies regarding the time frame for which these percentages were derived. Few studies reported on other measures of the extent of use such as duration or frequency. A variety of nonbiomedical practices were identified with biologically based treatments, particularly herbal medicine use, being the most common followed by religious and spiritual interventions. Regional differences were identified. Variation in the wording and format of the question(s) used in survey instruments asking participants about their use of nonbiomedical practices exists and may impact participants' reporting of use. Conclusions: Infertility affects millions of individuals worldwide often with severe social, emotional, and financial consequences. To enhance fertility and, in some cases, overcome infertility, many individuals and couples are engaging in a variety of nonbiomedical practices. This scoping review describes the scope and nature of the existing literature on the use of nonbiomedical practices for fertility enhancement and highlights important gaps and limitations in the conduct of this research. A more comprehensive and inclusive investigation of nonbiomedical practices for enhancing fertility is needed to improve our understanding of how individuals and couples are managing infertility, identify educational and counseling needs, and to improve research related to effectiveness and safety of nonbiomedical practices.

Distinguishing Nonlinear Terahertz Excitation Pathways with Two-Dimensional Spectroscopy.

High-field terahertz (THz) spectroscopy is enabling the ultrafast study and control of matter in new and exciting ways. However, when intense electromagnetic pulses are used in any kind of pump-probe spectroscopy, several nonlinear excitation pathways can result, leading to scenarios that required the development of multidimensional spectroscopies to illuminate the observed dynamics. Here we demonstrate a clear example where two-dimensional (2D) THz vibrational spectroscopy is needed to distinguish between nonlinear-excitation pathways in CdWO_{4}. We nonlinearly excite a set of Raman-active vibrational modes in CdWO_{4} with broadband THz pulses, and 2D spectroscopy allows us to determine the dominant excitation pathway. We provide a general framework for 2D THz and multi-THz nonlinear phonon spectroscopy in solid systems, which has important implications in contributing needed clarity to the nascent field of nonlinear phononics.

High-Acquisition-Rate Single-Shot Pump-Probe Measurements Using Time-Stretching Method.

Recent advances of ultrafast spectroscopy allow the capture of an entire ultrafast signal waveform in a single probe shot, which greatly reduces the measurement time and opens the door for the spectroscopy of unrepeatable phenomena. However, most single-shot detection schemes rely on two-dimensional detectors, which limit the repetition rate of the measurement and can hinder real-time visualization and manipulation of signal waveforms. Here, we demonstrate a new method to circumvent these difficulties and to greatly simplify the detection setup by using a long, single-mode optical fiber and a fast photodiode. Initially, a probe pulse is linearly chirped (the optical frequency varies linearly across the pulse in time), and the temporal profile of an ultrafast signal is then encoded in the probe spectrum. The probe pulse and encoded temporal dynamics are further chirped to nanosecond time scales using the dispersion in the optical fiber, thus, slowing down the ultrafast signal to time scales easily recorded with fast detectors and high-bandwidth electronics. We apply this method to three distinct ultrafast experiments: investigating the power dependence of the Kerr signal in LiNbO3, observing an irreversible transmission change of a phase change material, and capturing terahertz waveforms.