Results 41 to 50 of about 47,456,958 (159)

Reproducción asistida en latinoamérica y chile

open access: yesRevista Médica Clínica Las Condes, 2010
La principal fuente de información acerca de técnicas de reproducción asistida (TRA) en Latinoamérica es el Registro Latinoamericano de Reproducción Asistida (RLA). El RLA se estableció en 1990, y corresponde al primer registro multinacional del mundo. A
M. Juan Enrique Schwarze, Dr.   +2 more
doaj   +1 more source

Air-Drying Llama Sperm Affects DNA Integrity

open access: yesFrontiers in Veterinary Science, 2020
The objective of this study was to evaluate the effects of air-drying preservation on llama sperm DNA. Semen collections were carried out using electroejaculation under general anesthesia.
María Ignacia Carretero   +12 more
doaj   +1 more source

Drought reduces the value of both artificial and natural wetlands for gulls breeding in the Mediterranean region

open access: yesJournal of Applied Ecology, Volume 63, Issue 3, March 2026.
The importance of artificial wetlands for waterbird conservation can be easily overestimated from count data alone. The value of extensive fish ponds as a breeding habitat depends on maintaining the availability of natural marshes as a foraging habitat. This requires reducing impacts from groundwater extraction. Given recent abandonment of aquaculture,
Yingjun Wang   +5 more
wiley   +1 more source

Sustained contraceptive‐level plasma concentrations of 4,4′‐dinitrocarbanilide in free‐ranging urban feral pigeons fed a custom bait Niveles plasmáticos altos y sostenidos de 4,4′‐dinitrocarbanilida en palomas domésticas libres alimentadas con un cebo anticonceptivo

open access: yesWildlife Society Bulletin, Volume 49, Issue 4, December 2025.
We assessed the acceptability and consumption of a custom‐developed nicarbazin bait for feral pigeons, inferred its contraceptive efficacy, and evaluated the reversibility of its effects upon cessation of treatment. Only feral pigeons consumed the bait, except for one eared dove that also ingested the food. Continuous administration of this bait raised
Joaquín L. Navarro   +7 more
wiley   +1 more source

Las técnicas de reproducción asistida en México: Una realidad ignorada en su legislación.

open access: yesBioderecho.es
El presente trabajo muestra la situación legal que existe en México, tanto a nivel federal como estatal, respecto a las técnicas de reproducción asistida.
Francisco Javier Sandoval Ochoa
doaj   +1 more source

Plasma IGF1 and 17β-Estradiol Concentrations During the Follicular Wave in Llamas

open access: yesFrontiers in Veterinary Science, 2020
The aim of this study was to characterize the temporal association between follicular waves and circulating concentrations of 17β-estradiol (E2) and IGF1 in llamas. Follicular waves could be clearly divided in three phases: growth, plateau and regression;
María F. Gallelli   +8 more
doaj   +1 more source

Desnacionalización, Regímenes Visuales y Resistencia: Gitanos Americanos en Ciudad de México

open access: yesCultural Anthropology, Volume 39, Issue 2, Page 171-193, May 2024.
RESUMEN La idea de que el carácter de los roma es exterior al flujo de la dinámica de los procesos históricos es un organicismo alienante en México y América Latina, pues los regímenes visuales han reproducido estereotipos culturales y raciales excluyentes sobre ellos.
DAVID LAGUNAS
wiley   +1 more source

La reproducción artificial humana frente al derecho civil colombiano

open access: yesRevista de la Facultad de Derecho y Ciencias Políticas, 1989
Artículo públicado en dos entregas. para consultar la segunda parte dirijase al N° 87-88, esta entrega contiene: I. La reproducción artificial humana -- A. Itinerario de la reproducción artificial – B. Concepto de reproducción artificial humana --  C.
Luis Orlando Leal Dávila
doaj  

Identifying predictors of translocation success in rare plant species

open access: yesConservation Biology, Volume 38, Issue 2, April 2024.
Abstract The fundamental goal of a rare plant translocation is to create self‐sustaining populations with the evolutionary resilience to persist in the long term. Yet, most plant translocation syntheses focus on a few factors influencing short‐term benchmarks of success (e.g., survival and reproduction).
Joe Bellis   +43 more
wiley   +1 more source

Informaciones técnicas: Número 287 [PDF]

open access: yes, 2023
Informe de resultados.
Aragón. Centro de Técnicas Agrarias
core  

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