Small factors are the biggest contributors to the biggest changes in an ecosystem which may lead to its demise. Simple things such as tweaking the humidity or tampering with the temperature can be the downfall of the habitants and the ecosystem itself. These changes can be observed right now with the consistent temperature increase on Earth along with the slew of issues that come with global warming. A small change in a few degrees in temperature can perish an entire food supply and the habitat of many already endangered beings forcing them to either adapt or die. Within such an ecosystem the main reason it withstands the test of time boils down to one simple thing; reproduction. This creates the natural question of asking oneself: How does an ecosystem replenish itself and is able to resist collapsing? To even begin considering this thought, one must realise that the size of the population is the key to gaining a deeper understanding as two constituents that are important from evolutionary theory are survival and reproduction. The case of asexual reproducers, it is not difficult to see any alterations that can be introduced to increase reproductivity. Meanwhile, for sexual reproducers, the evolution to increase reproductivity can be observed by looking into the generational data of the species. A certain group of time-based dynamic systems that are connected to a sexual system are the point of contention. The suggested model is a dynamic representation of a hermaphrodite population which is described through quadratic stochastic operators. The key findings offer fresh insights into the future of hermaphrodite populations, that is perhaps a probable solution to prevent the decline of endangered or at-risk species. This demonstrates a fresh perspective on reproduction, which is explored through a purely mathematical approach.
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http://dx.doi.org/10.1016/j.heliyon.2023.e17913 | DOI Listing |
J Adolesc Health
January 2025
University of Michigan Department of Obstetrics and Gynecology, Ann Arbor, Michigan; Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan; Department of Health Behavior and Health Equity, University of Michigan School of Public Health, Ann Arbor, Michigan. Electronic address:
Purpose: We aimed to analyze adolescent and young adults' (AYAs) perspectives on using sexually transmitted infection (STI) self-collection kits to help guide the provision and implementation of accessible and confidential reproductive health-care services for those who experience the burden of STIs and STI-related morbidity.
Methods: We utilized MyVoice, a nationwide text message survey of AYAs, to pose 6 open-ended questions on their perceptions and use of STI self-collection kits. Two independent reviewers used inductive content analysis to develop a codebook and analyze responses, and a third settled any coding discrepancies through discussion to reach consensus.
Int J Biol Macromol
January 2025
College of Life Science, Sichuan Agricultural University, Yaan, Sichuan 625014, China; Sichuan Engineering Research Center for Crop Strip Intercropping System, Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, Sichuan 611130, China. Electronic address:
The macromolecular components of the seed coat, particularly lignin, play a critical role in regulating seed viability. In the maize-soybean intercropping (MSI) system, shading stress was reported to enhance the viability of soybean seeds. However, the specific role of seed coat lignin in this process remains poorly understood.
View Article and Find Full Text PDFContraception
January 2025
Collaborative for Reproductive Equity, Department of Obstetrics and Gynecology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, 1300 University Avenue, Medical Sciences Center 4245 Madison, WI 53706 USA. Electronic address:
In 2022, the United States' Supreme Court ruling in Dobbs v. Jackson Women's Health Organization overturned Roe v. Wade and federal protections for abortion.
View Article and Find Full Text PDFComp Biochem Physiol C Toxicol Pharmacol
January 2025
Department of Entomology, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, Pakistan. Electronic address:
Insecticide resistance in natural enemies can be used as a positive trait in integrated pest management programs by increasing the compatibility of two important tools; biological and chemical control. In this experiment, a field population of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) was selected with chlorantraniliprole for 35 generations (Chlor-Sel) developed a 100.32-fold resistance level compared to an unselected population (Unsel).
View Article and Find Full Text PDFAnn Endocrinol (Paris)
January 2025
Department of Surgery (CVMC), Unit of Endocrine and Metabolic Surgery, University of Lorraine, CHU Nancy-Hospital Brabois Adultes, Nancy, France.
This consensus on primary hyperparathyroidism, drawn up under the aegises of the French Society of Endocrinology (SFE), French Association of Endocrine Surgery (AFCE) and French Society of Nuclear Medicine (SFMN), provides an update on positive, etiological and differential diagnosis and treatment in primary hyperparathyroidism. These recommendations take account of recent increase in the prevalence of primary hyperparathyroidism, due to 1. more systematic routine measurement of blood calcium and improved quality of parathyroid hormone assays, 2.
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