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Nest sharing by birds, or the phenomenon where multiple individuals of different species contribute genetically and parentally to offspring in a single nest, is a rare form of cooperative breeding that has only occasionally been reported in socially monogamous birds. Here we describe, both behaviorally and genetically, the unique case of two female birds, a western kingbird () and a western kingbird × scissor-tailed flycatcher () hybrid, simultaneously occupying (and likely co-incubating eggs in) a single nest. Both females provisioned nestlings, and they did this in two consecutive years (producing four fledglings each year).
View Article and Find Full Text PDFReproductive strategies in loggerhead sea turtle : polyandry and polygyny in a Southwest Atlantic rookery.
PeerJ
January 2025
Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo, Laboratório de Genética e Evolução Molecular, Vitória, Espírito Santo, Brazil.
Sea turtles are highly migratory and predominantly inhabit oceanic environments, which poses significant challenges to the study of their life cycles. Research has traditionally focused on nesting females, utilizing nest counts and mark-recapture methods, while male behavior remains understudied. To address this gap, previous studies have analyzed the genotypes of females and hatchlings to indirectly infer male genotypes and evaluate the extent of multiple paternity within populations.
View Article and Find Full Text PDFGestational trophoblastic disease: STR genotyping for precision diagnosis.
Expert Rev Mol Diagn
January 2025
Department of Pathology, Yale University School of Medicine, New Haven.
Introduction: Gestational trophoblastic disease (GTD) encompasses a constellation of rare to common gynecologic conditions stemming from aberrant gestations with distinct genetic backgrounds and variable degrees of trophoblast proliferation of either neoplastic or non-neoplastic nature. GTD is categorized into hydatidiform moles and gestational trophoblastic neoplasms, and their clinical outcomes vary widely across different subtypes. Prompt and accurate diagnosis plays a pivotal role in the effective management and prognostication of patients.
View Article and Find Full Text PDFOptimization of Breeding Tools in Quinoa () and Identification of Suitable Breeding Material for NW Europe.
Plants (Basel)
December 2024
Plant Sciences Unit, ILVO (Flanders Research Institute for Agriculture, Fisheries and Food), Caritasstraat 39, 9090 Melle, Belgium.
Quinoa () cultivation has become increasingly popular in NW Europe but little is known about the performance of contract-free varieties in this region. In this study, we phenotyped 25 quinoa varieties on a single-plant basis in a field trial in Belgium. In addition, we optimized breeding tools such as NIRS (near-infrared reflectance spectroscopy) to estimate the seed crude protein content and a multiplex PCR set to identify true F progeny from pair crosses.
View Article and Find Full Text PDFThe Availability of Paternity Leave in US Surgical Residencies: A Study of Program Websites.
J Surg Res
January 2025
Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address:
Introduction: As family dynamics evolve, an increasing number of male residents are embracing parenthood during their training. Consequently, paternity leave has emerged as a crucial consideration. The aim of this study was to determine the gap in public availability of paternity leave policies in surgical residency programs across the United States.
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