Results 1 to 10 of about 1,986 (107)

Capacitation-Induced Mitochondrial Activity Is Required for Sperm Fertilizing Ability in Mice by Modulating Hyperactivation [PDF]

Frontiers in Cell and Developmental Biology, 2021
To become fully competent to fertilize an egg, mammalian sperm undergo a series of functional changes within the female tract, known as capacitation, that require an adequate supply and management of energy.
María Milagros Giaccagli, Matías Daniel Gómez-Elías, Jael Dafne Herzfeld, Clara Isabel Marín-Briggiler, Patricia Sara Cuasnicú, Débora Juana Cohen, Vanina Gabriela Da Ros   +6 more
doaj   +2 more sources

The use of insulin-like growth factor 1 improved the parameters of the seminogram in a patient with severe oligoasthenoteratozoospermia [PDF]

SAGE Open Medical Case Reports, 2019
Male patients suffering from oligoasthenoteratozoospermia typically failed to achieve pregnancy, even with assisted reproductive technologies. Growth hormone and insulin-like growth factor 1 have been shown to regulate sperm quality parameters; therefore,
José Arturo Mora Rodríguez, Leonardo M Porchia, Felipe Camargo, Esther López-Bayghen   +3 more
doaj   +2 more sources

Editorial: Metabolic regulation of gamete function in health and disease [PDF]

Frontiers in Cell and Developmental Biology, 2022
Débora J. Cohen, Vanina G. Da Ros, Nicolas G. Brukman, Farners Amargant   +3 more
doaj   +2 more sources

Paternal advanced age and sperm quality are indicators for Preimplantation Genetic Testing in egg donation cycles

Clinical and Experimental Obstetrics & Gynecology, 2021
Background: A wide variety of studies demonstrate the influence of the oocyte source’s age on the success of assisted reproduction treatments; however, the effect of paternal age has been studied to a lesser extent.
Jeimy Pedraza, Hugo Sierra, Jacqueline Cordero, Esther López-Bayghen   +3 more
doaj   +1 more source

Fertilización potásica en líneas mejoradas y material criollo de chile soledad (Capsicum annuum L.)

Ecosistemas y Recursos Agropecuarios, 2023
El potasio es considerado uno de los fertilizantes más importantes puesto que incide directamente en funciones fisiológicas esenciales de los cultivos, la aplicación inadecuada de este elemento y el uso de semilla criolla suelen repercutir en la calidad
Ana Rosa Ramírez-Seañez, José Mauricio Alfonso-García, Hipólito Hernández-Hernández, Rogelio Enrique Palacios-Torres, Moisés Ramírez-Meraz, Victoria Jared Borroel-García   +5 more
doaj   +1 more source

Ecological and evolutionary effects of crop diversity decrease yield variability

Journal of Ecology, Volume 111, Issue 6, Page 1242-1253, June 2023., 2023
Results highlight the ecological and evolutionary role of plant interactions in crop mixtures, which can affect yield stability, while also reflecting on the importance of climate and resource availability in modifying the diversity‐stability relationship.
Jesús López‐Angulo, Laura Stefan, Nadine Engbersen, Christian Schöb   +3 more
wiley   +1 more source

Modeling genetic benefits and financial costs of integrating biobanking into the conservation breeding of managed marsupials

Conservation Biology, Volume 37, Issue 2, April 2023., 2023
Abstract Managed breeding programs are an important tool in marsupial conservation efforts but may be costly and have adverse genetic effects in unavoidably small captive colonies. Biobanking and assisted reproductive technologies (ARTs) could help overcome these challenges, but further demonstration of their potential is required to improve uptake. We
Lachlan G. Howell, Peter R. Mawson, Pierre Comizzoli, Ryan R. Witt, Richard Frankham, Simon Clulow, Justine K. O'Brien, John Clulow, Paul Marinari, John C. Rodger   +9 more
wiley   +1 more source

Integrating effects of neighbor interactions for pollination and abiotic resources on coffee yield in a multi‐strata agroforest

Biotropica, Volume 54, Issue 5, Page 1226-1237, September 2022., 2022
Animal‐pollinated plants interact with neighbors for both abiotic resources and pollination, but few studies have compared the relative magnitude of these effects, particularly in agroecosystems. This study evaluated the effects of neighboring plants at three vertical strata (herbs, coffee bushes, and canopy trees) on pollen deposition, fertilization ...
Gordon Fitch, John Gonzalez, Anna M. Oana, Maggie Oliver, John Vandermeer   +4 more
wiley   +1 more source

How to Explain Major Policy Change Towards Sustainability? Bringing Together the Multiple Streams Framework and the Multilevel Perspective on Socio‐Technical Transitions to Explore the German “Energiewende”

Policy Studies Journal, Volume 50, Issue 3, Page 671-699, August 2022., 2022
Most efforts at explaining major policy transformation apply a single lens to study specific cases. Recent contributions have called for a more plural use of theories to facilitate the production of valuable new perspectives and research agendas. The German energy transition is a good example of such a transformative change.
Pim Derwort, Nicolas Jager, Jens Newig
wiley   +1 more source

Rendimiento del maíz (Zea mays L.) en respuesta a la fertilización con nitrógeno, fósforo y silicio al suelo

Terra Latinoamericana, 2023
En el estado de Guerrero, el maíz (Zea mays) se siembra en diferentes condiciones edáficas y climáticas, en altitudes que van desde el nivel del mar hasta los 2880 m de altitud, principalmente en régimen de temporal y por productores que utilizan maíces ...
Oscar Martín Antúnez-Ocampo, Juan Elías Sabino-López, Cesar del Ángel Hernández Galeno, Mariana Espinosa-Rodríguez   +3 more
doaj   +1 more source