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Mostrando ítems 968-987 de 1643
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Microplastics in feed cause sublethal changes in the intestinal microbiota and a non-specific immune response indicator of the freshwater crayfish Procambarus clarkii (Decapoda: Cambaridae)
(2023-07-18)Microplastics (MP) are a hazardous pollutant of global concern that threatens aquatic ecosystems and public health. We used the invasive, cosmopolitan, and environmentally versatile red swamp crayfish Procambarus clarkii ... -
Micropropagation and genetic transformation of Spanish Cedar (Cedrela odorata L.): A Review
(2019-05)Cedrela odorata L. (Meliaceae) is a timber tree of high economic value. Currently, this species faces serious problems due to selective cutting and environmental degradation, which together have contributed to the decline ... -
Micrurus Nigrocinctus (Central America Coralsnake) Predation
(2019)Coral snakes and their mimics are rarely preyed upon by birds. Turquoise-browed Motmots and Great KisKadees, wich feed on snakes and other reptiles, avoid models with the patterns of coral snakes or their mimics. Howerver, ... -
Mionecrosis, hemorragia y edema inducidos por el veneno de Bothrops asper en ratón blanco
(1980)Pathogenesis of the myonecrotic, hemorrhagic and edema-forming effects in white mice inoculated with Bothrops asper venom was studied at different time intervals by means of light microscopy, determination of serum levels ... -
Mis memorias sobre Robert L. Dressler (1927 - 2019): Botánico y ser humano extraordinario
(2020)Se presenta un texto biográfico y una valoración de la extensa obra científica del botánico Robert L. Dressler, que dedicó la mayor parte de su vida y su esfuerzo al estudio sistemático y taxonómico de las orquídeas, ... -
Misidentification of Bellator gymnostethus (Gilbert, 1892) as Prionotus ruscarius Gilbert & Starks, 1904 (Scorpaeniformes: Triglidae)
(2020-09-14)The checklist by Robertson et al. (2017) of fishes from the tropical eastern Pacific included information on three members of the family Triglidae: Bellator loxias (Jordan, 1897), Prionotus ruscarius and P. stephanophrys ... -
Mixomicetes asociados con Avicennia germinans y Laguncularia racemosa en el manglar del Amatal, El Salvador
(2022)Los estudios de mixomicetes en ecosistemas de manglar no son comunes; principalmente se han llevado a cabo en Brasil. En esta investigación, se realizó el primer muestreo de mixomicetes asociados a dos especies de ... -
Mixomicetes del Cerro Buenavista – Macizo de la Muerte, Talamanca
(2004-01-01)Se incluye un listado con descripciones de especies de mixomicetes del Cerro Buenavista (Cerro de la Muerte). El listado incluye una clave dicotómica y un glosario. -
Modelo de estrategia de sostenibilidad para reservas naturales privadas. Estudio de casos en el cantón de San Ramón, Alajuela, Costa Rica. 2018-2019
(2019)Aunque Costa Rica posee alrededor de un 52,4% de su territorio de cobertura forestal, solo el 25,4% se encuentra bajo alguna categoría de manejo de Áreas Silvestres Protegidas (Sinac, 2018), es decir, solo cerca de la mitad ... -
Molecular characterization and genetic diversity of Jatropha curcas L. in Costa Rica
(2017-02-09)We estimated the genetic diversity of 50 Jatropha curcas samples from the Costa Rican germplasm bank using 18 EST-SSR, one G-SSR and nrDNA-ITS markers. We also evaluated the phylogenetic relationships among samples using ... -
Molecular clocks and archeogenomics of a late period egyptian date palm leaf reveal introgression from wild relatives and add timestamps on the domestication
(2021-06-30)The date palm, Phoenix dactylifera, has been a cornerstone of Middle Eastern and North African agriculture for millennia. It was first domesticated in the Persian Gulf, and its evolution appears to have been influenced by ... -
Molecular data indicate that Rhytidhysteron rufulum (ascomycetes, Patellariales) in Costa Rica consists of four distinct lineages corroborated by morphological and chemical characters
(2009)Rhytidhysteron rufulum is a poorly known, common, pantropical species, capable of utilizing different substrata and occupying diverse habitats, and is the only species of its genus in Costa Rica. We have employed molecular, ... -
Molecular phylogenetics of Maxillaria and related genera (Orchidaceae: Cymbidieae) based on combined molecular data sets
(2007-11)The orchid genus Maxillaria is one of the largest and most common of neotropical orchid genera, but its current generic boundaries and relationships have long been regarded as artificial. Phylogenetic relationships within ... -
Monitoreo de monos en Playa Hermosa, Guanacaste
(2010-09-30)Los Monos Congos tienen costumbres de moverse en manada o tropas, que se componen de entre los cinco a treinta miembros, de los cuales solo la cuarta parte son machos, la mitad hembras adultas y el resto infantiles o ... -
Monitoreo de pastos marinos en Perezoso, Cahuita, Costa Rica (sitio CARICOMP)
(Revista de Biología Tropical: Vol. 55 (1), 55-66, 2007-03)The seagrass of Perezoso (Cahuita National Park, Caribbean coast of Costa Rica) was monitored using the CARICOMP protocol. Productivity (2.7±1.15 g/m 2 /d; n=74) was intermediate, compared to other Caribbean sites. ... -
Monitoreo de perezosos en el Parque Nacional Manuel Antonio
(2002-08-31)Análisis de la población del perezosos de tres dedos (Bradypus tridactylus), principal componente de la biomasa del Parque Nacional Manuel Antonio, Costa Rica. El parque forma parte del Área de Conservación Pacífico Central ... -
Monstera limitaris (Araceae), a new species from the border between Costa Rica and Panama
(2018-11-15)Species of genus Monstera are among the most representative hemi-epiphytic Araceae in the Neotropics. They are widely distributed and abundant in the tropical forests of Costa Rica and Panama. During recent exploration in ... -
Morfología, ecolocalización y uso de micro-hábitat de murciélagos del género Pteronotus (Chiroptera: Mormoopidae) en el Parque Nacional Barra Honda, Costa Rica
(2020)En el trópico hay una gran riqueza de especies de murciélagos insectívoros y esta riqueza se mantiene, en parte, por el reparto eficiente de los recursos ambientales. Estudios sobre la repartición de recursos entre los ...