Now showing items 21-30 of 303
Conservación de orquídeas en una reserva privada de Palmares, Costa Rica
Orchid conservation in a private preserve at Palmares, Costa Rica
Madre Verde Private Preserve, located in Palmares (Alajuela, Costa Rica) protects a forest relict surrounded by pastures, bushes and abandoned agriculture grounds. An inventory was conducted in this preserve to determine ...
Un híbrido espontáneo entre Aristolochia gorgona y A. grandiflora (Aristolochiaceae)
A spontaneous hybrid between Aristolochia gorgona and A. grandiflora appeared at Lankester Botanical Garden, Costa Rica, where plants of both species were cultivated in close proximity. This indicates that geographic ...
Myoxanthus vittatus (Orchidaceae), a new species from Costa Rica
The taxonomic position of Myoxanthus Poepp. & Endl. (Orchidaceae: Pleurothallidinae) is discussed and Silenia Luer is maintained as a subgenus of Myoxanthus. A new species of Myoxanthus is described and illustrated. ...
Isolation of Flavonoids from Deguelia duckeana and Their Effect on Cellular Viability, AMPK, eEF2, eIF2 and eIF4E
Preparations of Deguelia duckeana, known in Brazil as timbó, are used by indigenous people to kill fish. Reinvestigation of its extracts resulted in the isolation and identification of 11 known flavonoids identified as ...
Actinoramide A Identified as a Potent Antimalarial from Titration-Based Screening of Marine Natural Product Extracts
Methods to identify the bioactive diversity within natural product extracts (NPEs) continue to evolve. NPEs constitute complex mixtures of chemical substances varying in structure, composition, and abundance. NPEs can ...
Discovery of Tricyclic Clerodane Diterpenes as Sarco/Endoplasmic Reticulum Ca2+-ATPase Inhibitors and Structure−Activity Relationships
Tricyclic clerodane diterpenes (TCDs) are natural compounds that often show potent cytotoxicity for cancer cells, but their mode of action remains elusive. A computationally based similarity search (CDRUG), combined with ...
New records of snipe eels (Anguilliformes: Nemichthyidae) from the Pacific coast of lower Central America
Background: New records of occurrence of two snipe eels (Avocettina bowersii and Nemichthys scolopaceus), poorly known for the Pacific coast of Costa Rica and Panama are herein reported. Results: Specimens, 45 in total ...
Variation in the whole mitogenome of reef-building Porites corals
The study of complete mitochondrial genomes (mitogenomes) revealed different gene rearrangements, highly variable markers, and delineated clades that have aided the understanding of the evolutionary history in corals. In ...
A new species of Leptoderma Vaillant, 1886 (Osmeriformes: Alepocephalidae) from the Pacific coast of Central America
A new species of Leptoderma Vaillant, 1886 is described from a single specimen trawled at 1368–1406 m depth off El Salvador, Central America, tropical eastern Pacific. Leptoderma ospesca n. sp. can be readily distinguished ...