Results 51 to 60 of about 1,665 (114)

Efecto del progestágeno y de la dosis de gonadotropina corionica equina en la sincronización del estro y tasa de gestación en ovejas pelibuey inseminadas por laparoscopia / Effect of progestagen and dose of equine gonadotropin corionic on estrus sinchronization and pregnancy rate in pelibuey ewes following laparoscopic insemination

open access: yesEcosistemas y Recursos Agropecuarios, 2014
El objetivo del presente estudio fue evaluar el efecto de dos progestágenos y dos dosis de gonadotropina coriónica equina (eCG) en la sincronización del estro y tasa de gestación de ovejas Pelibuey inseminadas por laparoscopia bajo condiciones de trópico.
Jesús Ricardo Aké-López   +3 more
doaj   +1 more source

Taxonomic Studies on 10 Species Within the Genus Impatiens Based on the Complete Chloroplast Genomes and Morphological Researches, Along With the Report of Newly Discovered Species

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
This study uses comparative chloroplast genomics and morphological analyses to clarify the phylogenetic positions of 10 morphologically similar Impatiens species in southwestern China, providing key taxonomic insights—including describing a new taxon (Impatiens xishuiensis) and proposing revisions—and advancing our understanding of karst‐adapted ...
Qinqin Yong   +6 more
wiley   +1 more source

Alimentación de gallinas y calidad del huevo en sistemas de avicultura alternativa: análisis bibliométrico

open access: yesRevista Mexicana de Ciencias Pecuarias
El objetivo de este trabajo fue analizar la investigación publicada en artículos científicos donde, mediante técnicas bibliométricas, se realizó un estudio sobre el tipo de alimentos proporcionados a las gallinas y la calidad del huevo en sistemas de ...
Alejandra del Carmen García Medina   +7 more
doaj   +1 more source

Two new records for the flora of Paraguay: Stemodia diplohyptoides and S. lobelioides (Plantaginaceae:Gratioleae)

open access: yesNordic Journal of Botany, Volume 2026, Issue 3, March 2026.
Stemodia diplohyptoides M.M.Sosa & Dematt. and S. lobelioides Lehm. (Gratioleae, Plantaginaceae) are reported for the first time in Paraguay, found in Alto Paraná and Presidente Hayes departments, respectively. These new records extend the known geographical range of both species, representing the northern records to date, S.
Y. Carlés Bechara   +4 more
wiley   +1 more source

Taxonomic treatment, geographic distribution and preliminar conservation status of Croton sect. Barhamia subsect. Barhamia (Euphorbiaceae) in Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 3, March 2026.
The genus Croton (Euphorbiaceae) is an exceptionally megadiverse genus, encompassing roughly 1200 species that are predominantly distributed across tropical regions globally. For the New World, the genus is organized into three subgenera (Adenophylli, Geiseleria and Quadrilobi) and 31 sections, with C. sect. Barhamia standing out with its approximately
Nicolas Giovanny Burilli   +2 more
wiley   +1 more source

Patterns of Tree Species Abundance and Diversity on Urban Sidewalks in Macapá, Amapá, Brazil

open access: yesEcological Research, Volume 41, Issue 2, March 2026.
This study presents the first systematic inventory of street trees in Macapá, Northeastern Brazilian Amazon. Results reveal a dominance of exotic and fruit‐bearing species, low tree density, and a replacement of large canopy trees by smaller ones, indicating potential losses in ecosystem services and the need for more biodiversity‐focused afforestation
Lorena Antunes Jimenez   +8 more
wiley   +1 more source

Preclinical evaluation of the RBD-Trimeric vaccine: A novel approach to strengthening biotechnological sovereignty in developing countries against SARS-CoV-2 variants

open access: yesTravel Medicine and Infectious Disease
New immunogens against emerging new virus variants are essential for controlling new variants. Methods: A preclinical study in which a receptor-binding domain (RBD) trimer was designed in silico with information from the Beta (B.1.351), Omicron (BA.5 ...
Luis Flórez   +11 more
doaj   +1 more source

La Colección Zoológica Regional (Aves) del Instituto de Historia Natural de Chiapas, México

open access: yesHuitzil, 2009
La Colección Zoológica Regional (Aves) del Instituto de Historia Natural de Chiapas, México, alberga 7,173 ejemplares que pertenecen a 17 órdenes, 68 familias, 339 géneros y 575 especies. La mayoría de los especimenes son de Chiapas (72.4%), Oaxaca (15.4%
Marco Antonio Altamirano González Ortega   +1 more
doaj   +1 more source

The effect of Bacillus spp. and vermicompost on the growth of cherry tomato, Solanum lycopersicum L., fruits

open access: yesRevista de Ciencias Agrícolas
In this investigation, we evaluate the effect of Bacillus spp. and vermicompost on the growth of cherry tomato, Solanum lycopersicum L., fruits. We used four treatments: T1. Vermicompost (112 g). T2.
Yenny Astrid Barahona-Pico   +2 more
doaj   +1 more source

First report of Culex flavivirus infection from Culex coronator (Diptera: Culicidae), Colombia

open access: yesVirology Journal, 2019
Background Flaviviruses are important pathogens for humans and animals (Dengue viruses, Yellow fever virus, Zika virus and West Nile virus). Culex flavivirus (CxFV) is an insect-specific virus of the genus Flavivirus, detected in a wide variety of ...
Jorge Miranda   +5 more
doaj   +1 more source

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