Results 61 to 70 of about 51,560 (181)

A New Species of Platythyrea (Hymenoptera; Formicidae) From Costa Rica

Psyche: A Journal of Entomology, 1976
A new species of Platythyrea was found in the Field Museum insect collections too late to be included in Brown’s (1975) revision of the genus. Eleven workers were collected by Dr. John Wagner and Dr.
Charies Kugler
doaj   +1 more source

A Cross-Sectional Study of Seroprevalence of Strongyloidiasis in Pregnant Women (Peruvian Amazon Basin)

Pathogens, 2020
Strongyloidiasis is a soil-transmitted helminthiasis with a high global prevalence. Objectives: We aimed to evaluate the prevalence of Strongyloides stercoralis infection and assess strongyloidiasis serology as a screening technique in the Peruvian ...
Sonia Ortiz-Martínez, José-Manuel Ramos-Rincón, María-Esteyner Vásquez-Chasnamote, Jhonatan J. Alarcón-Baldeón, Jorge Parraguez-de-la-Cruz, Olga-Nohelia Gamboa-Paredes, Patricia Schillyk-Guerra, Luis-Alfredo Espinoza-Venegas, Viviana-Vanessa Pinedo-Cancino, Ramón Perez-Tanoira, Miguel Górgolas-Hernández-Mora, Martin Casapía-Morales, Spanish-Peruvian Chagas, HTLV and Strongyloides Network   +12 more
doaj   +1 more source

Host species and age‐specific variation on Hepatozoon prevalence and its effect on body condition in two Neotropical crocodiles

Wildlife Biology, Volume 2025, Issue 5, September 2025.
Many populations of species belonging to the order Crocodilia are threatened due to illegal trafficking, indiscriminate hunting, and habitat loss and degradation affecting crocodilian health and parasitic load. Although several studies have revealed that crocodiles, caimans, and alligators are frequently infected by Hepatozoon spp., the results from ...
Alfonso Marzal, Wendy Flores‐Saavedra, Sergio Magallanes, Jaime Muriel, Jefferson Lezama‐Briceño, Luis Alberto García‐Ayachi, Esteban Fong, Carlos Mora‐Rubio, Carlos Mendoza, Blanca Saldaña, Alazne Díez‐Fernández, José Martin, Carlos Marcial Perea‐Sicchar, Manuel González‐Blázquez   +13 more
wiley   +1 more source

Distribution, antiquity and niche of pre-columbian guaraní amazonian horticulturalists in the misiones rainforest, Argentina [PDF]

, 2017
En este trabajo presentamos la distribución conocida del registro arqueológico generado por horticultores amazónicos, englobados dentro de la unidad arqueológica Guaraní, en la provincia de Misiones.
Carbonera, Miriam, Loponte, Daniel Marcelo   +1 more
core  

Nest niche overlap among the endangered Vinaceous-breasted Parrot (Amazona vinacea) and sympatric cavity-using birds, mammals, and social insects in the subtropical Atlantic Forest, Argentina [PDF]

, 2017
Many forest bird species require tree cavities for nesting, and share this resource with a diverse community of animals. When cavities are limited, niche overlap can result in interspecific competition, with negative consequences for threatened ...
Bonaparte, Eugenia Bianca, Cockle, Kristina Louise   +1 more
core   +1 more source

Range‐restricted species are poor proxies for functional diversity in the world's largest avifauna

Conservation Science and Practice, Volume 7, Issue 9, September 2025.
We assessed the relationship between avian taxonomic richness (four metrics) and functional diversity (three metrics) across Colombia, the country with the most bird species. We found total species richness and threatened species richness to be suitable proxies for both functional richness and evenness. Protecting the eastern slope of the Eastern Andes
Montague H. C. Neate‐Clegg, Samuel Eberhard, Camila Gómez, Sean Siddens, Natalia Ocampo‐Peñuela   +4 more
wiley   +1 more source

Fisiología y ecología del fitocromo: su función en las semillas

Botan‪ical Sciences, 1989
En los procesos regulados por la luz el fitocromo es el pigmento fotorreceptor. En los últimos años se le ha conferido a este pigmento un papel importante en la detección de las condiciones ambientales de los procesos regulados por él (fotomorfogénesis,
Alma Orozco-Segovia
doaj   +1 more source

Epiphyllous Lejeuneaceae in Costa Rica : contributions to the altitudinal distribution of selected species [PDF]

, 2001
The altitudina l distribution of selected species of epiphyllous Lejeuneaceae shows 6 groups (table 1 and 2): I (only lower than 500 m) Cololejeunea setiloba; II (1-1600m) Aphanolejeunea costaricensis, A.
Eggers, Jens
core  

De novo transcriptome sequencing and SSR markers development for Cedrela balansae C. DC., a native tree species of northwest Argentina [PDF]

, 2018
The endangered Cedrela balansae C.DC. (Meliaceae) is a high-value timber species with great potential for forest plantations that inhabits the tropical forests in Northwestern Argentina.
Acuña, Cintia Vanesa, Fernández, Paula, Fornes, Luis Fernando, Gonzalez, Sergio, Hopp, Horacio Esteban, Inza, María Virginia, Marcucci Poltri, Susana Noemí, Paniego, Norma Beatriz, Pomponio, María Florencia, Rivarola, Maximo Lisandro, Torales, Susana, Zelener, Noga   +11 more
core   +2 more sources

Gene Flow and Vertical Stratification of Pollination in the Bat‐Pollinated Liana Marcgravia longifolia

Ecology and Evolution, Volume 15, Issue 8, August 2025.
This study investigates pollen dispersal, vertical stratification of gene flow, and spatial genetic structure in the bat‐pollinated liana Marcgravia longifolia in a western Amazonian forest. Flowers are produced from the forest floor to the canopy, allowing analysis of pollination across strata.
Malika Gottstein, Sarina Thiel, Jan Lukas Vornhagen, Christina Mengel, Marco Tschapka, Eckhard W. Heymann, Katrin Heer   +6 more
wiley   +1 more source