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Medfly courtship duration: a sexually selected reaction norm changed by crowding
(Ethology Ecology & Evolution 10: 369-382, 1998, 1998-10)The evolutionary effects of crowding on male courtship behavior were studied using wild and mass-reared medflies. Mass-reared strains had been raised under highly crowded conditions in mass-rearing facilities for ... -
Megaherbivore exclusion led to more complex seagrass canopies and increased biomass and sediment Corg pools in a tropical meadow
(2022)In some regions of the Caribbean Sea, seagrasses have been negatively affected by sea turtle overgrazing. Seagrass canopy complexity has declined at a long-term monitoring site in Costa Rica. We deployed megaherbivore ... -
Meiotic Chromosome Behavior and Capsule Setting in Doritaenopsis Hybrids
(J. AMER. SOC. HORT. SCI. 133(1):107–116. 2008, 2008-10-06)The development of new cultivars in Doritaenopsis Guillaum. & Lami orchids is often hindered by factors such as low seed count in hybrids. Cytological study may offer the ability to develop new hybrids by revealing cultivars ... -
Mercury levels in muscle tissue of four common elasmobranch species from the Pacific coast of Costa Rica, Central America
(2016-01)Mercury (Hg) is a non-essential and toxic element that is ubiquitous in the marine environment and biomagnifies through food webs. Given the high trophic position of many elasmobranch species, it is important to quantify ... -
Messua sp. (Salticidae), the host spider of the polysphinctine Inbioia pivai (Ichneumonidae: Pimplinae)
(2019)The koinobiont ectoparasitoids of spiders in the Polysphincta genus group are divided into two well-supported clades. Species in one clade parasitize spiders in the higher araneoid group, and the behaviour of these ... -
Un método de transformación genética de maíz para conferirle resistencia ulterior a enfermedades virales
(2004-09)A method for genetic transformation of maize for resistance to viral diseases. A system for the genetic transformation of maize was developed for two Costa Rican varieties: CR-7 and Diamantes 8843, that can allow the ... -
Micromorfología de los foliolos de pejibaye Bactris gasipaes (Arecaceae) var. Diamantes-10
(2016-07-01)Bactris gasipaes se cultiva ampliamente para el aprovechamiento del palmito y el consumo de los frutos En este trabajo se realizó una descripción de las características micro morfológicas de los foliolos de plantas ... -
Microorganismos del corredor marino Isla del Coco-Galápagos: diversidad funcional y de especies
(2018)El corredor marino Isla del Coco-Galápagos, en su conjunto, constituye un santuario para la protección de especies marinas en la región oriental del Pacífico Tropical. La alta biodiversidad de macroorganismos ha sido ... -
Microplastic ingestion by a herring Opisthonema sp. in the Pacific coast of Costa Rica
(2020-07)Current knowledge of the presence of microplastics (MP) in marine species in tropical areas is still limited. The presence of MP was examined in the gastrointestinal content of 30 filter feeders of the herring Opisthonema ... -
Microplastic pollution increases gene exchange in aquatic ecosystems
(2018-06)Pollution by microplastics in aquatic ecosystems is accumulating at an unprecedented scale, emerging as a new surface for biofilm formation and gene exchange. In this study, we determined the permissiveness of aquatic ... -
Microplastics alter composition of fungal communities in aquatic ecosystems
(2017)Despite increasing concerns about microplastic (MP) pollution in aquatic ecosystems, there is insufficient knowledge on how MP affect fungal communities. In this study, we explored the diversity and community composition ... -
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.