Results 31 to 40 of about 256 (112)

Evolutionary history of Middle American Rhamdia (Siluriformes: Heptapteridae) inferred from comparative mitogenomic data: Insights on historical biogeography and cave colonization in the group

Journal of Systematics and Evolution, Volume 63, Issue 6, Page 1501-1518, November 2025.
Investigating the systematics and biogeography of Neotropical catfishes of the genus Rhamdia refined phylogenetic hypotheses, including deep paraphyly of Rhamdia laticauda, supported northward dispersal catalyzed by emergence of the Panamanian Isthmus and imply that cave colonization is widespread, convergent, and recent, with established cave‐dwelling
Jairo Arroyave, Adán Fernando Mar‐Silva, Bruno F. Melo, Sonia Gabriela Hernández‐Ávila, Jesús M. López‐Vila, Gabriel S. C. Silva, Píndaro Díaz‐Jáimes   +6 more
wiley   +1 more source

Sistema de ayuda a la decisión para la gestión hidrológica del río Guayas

Tecnología y ciencias del agua
La cuenca del río Guayas en Ecuador es la más grande en la vertiente Pacífico de Suramérica, con un área de 34 500 km2 (12.57 % del territorio nacional).
José María Campo-Carrera, Miguel Angel Cedeño-Villarroel, Mauricio Boada-Herrera, Angel Udias   +3 more
doaj   +1 more source

Benefits of Canavalia ensiformis, arbuscular mycorrhizal fungi, and mineral fertilizer management in tobacco production

Frontiers in Agronomy
Tobacco (Nicotiana tabacum L.) has long been vital to Cuban agriculture, with its products renowned for their quality. Cuban tobacco is grown in soils with a long history of continuous farming using traditional fertilization methods characterized by ...
Daniel Ponce de Leon, Milagros Garcia Rubido, Ramón Rivera, Daniel Mancero-Castillo, Yoansy Garcia   +4 more
doaj   +1 more source

Microplastic Occurrence in the Diet of Green Sea Turtles (Chelonia mydas) From the Coastal Region of São Paulo, Brazil

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 6, June 2025.
ABSTRACT Microplastics (MPs) represent the main vector of pollution in the marine environment. Originating from the slow degradation process of plastics into smaller particles, MPs vary in size between 1 and 5 mm. Their ability to adsorb and transport contaminants, disperse invasive organisms and be accidentally ingested by marine animals makes these ...
Juliana R. da Costa, Débora M. de Freitas   +1 more
wiley   +1 more source

Gender dynamics and aspirational disparities in agriculture

Applied Economic Perspectives and Policy, Volume 47, Issue 1, Page 176-198, March 2025.
Abstract Despite increasing scholarly attention to individual aspirations, rural women's aspirations in agriculture remain largely unexplored. With women increasingly central to agricultural work, understanding their aspirations is crucial. Using farm surveys from Ecuador, Kenya, and Rwanda, we investigate the relationship between gender and aspiration
Alexis H. Villacis, Selina Bruns, Martin Paul Jr Tabe‐Ojong, David L. Ortega, Ashok K. Mishra   +4 more
wiley   +1 more source

Molecular Detection and Phylogenetic Analysis of Rice Hoja Blanca Virus Infecting Rice in Ecuador

New Disease Reports, Volume 54, Issue 1, July/September 2026.
P. A. Toscano Gómez, J. F. Cornejo‐Franco, I. M. Félix Barrera, D. F. Quito‐Avila   +3 more
wiley   +1 more source

¿Quiénes vivían al este de los chonos?

Estudios Atacameños
Los documentos coloniales tempranos sugieren que el área comprendida entre la llanura aluvial alta del río Guayas y el piedemonte andino occidental de la Provincia de Bolívar, estuvo ocupada por la sociedad Chono. Durante el período cronológico conocido
Angelo Constantine-Castro, María José Moscoso, Álvaro Mora Mendoza, Daniel Garcés, Kervin Chunga, Adriana Delgado-Morales, Roberto Ordoñez-Araque, Víctor Cuzco-Villavicencio, Génesis Reyes, Xavier Santos, Renata Triviño, Jocelynne Vera-Ayala, José Moscoso-Urgilez   +12 more
doaj   +1 more source

Integrating new variables into a framework to support cacao denomination of origin: a case study in Southwest Colombia

Journal of the Science of Food and Agriculture, Volume 104, Issue 3, Page 1367-1381, February 2024.
Abstract BACKGROUND Cocoa quality plays a pivotal role in establishing denominations of origin, with genotypes, geography, climate and soil conditions being key variables. However, these factors have not been comprehensively explored in defining cacao denominations of origin.
Carlos E González‐Orozco, Mario Porcel, Roxana Yockteng, Alejandro Caro‐Quintero, Caren Rodriguez‐Medina, Margareth Santander, Martha Zuluaga, Mauricio Soto, Jader Rodriguez Cortina, Fabrice Eric Vaillant, Sebastian Escobar Parra   +10 more
wiley   +1 more source

A possible mechanism for partial crowding‐out of R&D subsidies in developing countries

Review of Development Economics, Volume 28, Issue 1, Page 71-96, February 2024.
Abstract We analyze the effectiveness of R&D subsidies on firms' R&D efforts in a developing country like Ecuador. We use the National Survey of Innovation Activities. Methodologically, we employ a structural framework that considers simultaneity and selection issues.
María Engracia Rochina Barrachina, Jorge Antonio Rodríguez Moreno   +1 more
wiley   +1 more source

The Neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study

Neotropical Ichthyology
The catfishes of the subfamily Cetopsinae of the Neotropical family Cetopsidae are revised. Four genera, Cetopsidium new genus, Cetopsis, Denticetopsis, and Paracetopsis Bleeker are recognized as valid. Bathycetopsis, Hemicetopsis, and Pseudocetopsis are
Richard P. Vari, Carl J. Ferraris Jr., Mário C. C. de Pinna   +2 more
doaj   +1 more source