Browsing Biología by Title
Now showing items 1357-1376 of 1578
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Tadpole begging reveals high quality
(2017)Parents can benefit from allocating limited resources non randomly among offspring, and offspring solicitation (i.e. begging) is often hypothesized to evolve because it contains information valuable to choosy parents. We ... -
Taxonomic and Functional Diversity of Aquatic Macroinvertebrate Assemblages and Water Quality in Rivers of the Dry Tropics of Costa Rica
(2021-08)One of Costa Rica’s driest areas is the province of Guanacaste, in the Pacific Northwest, with almost no rain during the dry season from November to April. Due to this marked seasonality, the area is covered by dry tropical ... -
Taxonomic Keys and Plates from The Myxomycetes
(2021-04-01)In 1969, George W. Martin and Constantine J. Alexopoulos published a remarkable work on myxomycetes. Their monograph on this group of organisms became one of the references to the taxonomy and geographical distribution of ... -
Taxonomic revision of the peculiar genus Xylopodia (Loasaceae) with a new species from Argentina and Bolivia demonstrating an atypical trans-Andean disjunction
(2022)Loasaceae subfam. Loasoideae are a nearly exclusively American plant group with a center of diversity in Peru. Numerous new taxa have been described over the past decades; one of the most striking discoveries was that of ... -
Taxonomical and functional diversity of Saprolegniales in Anzali lagoon, Iran
(2020)Studies on the diversity, distribution and ecological role of Saprolegniales (Oomycota) in freshwater ecosystems are currently receiving attention due to a greater understanding of their role in carbon cycling in various ... -
Taxonomía multifásica de hongos endófitos del orden hypocreales en rubiaceae de bosque natural de Costa Rica
(2023)Los problemas fitosanitarios relacionados al café en Latinoamérica y otras áreas en el mundo, han registrado un aumento en la frecuencia y la severidad de las enfermedades producidas por hongos como Hemileia vastatrix ó ... -
Taxonomy and phylogeny of the genus Ganoderma (Polyporales, Basidiomycota) in Costa Rica
(2023)Ganoderma species are well recognized by their significant role in the recycling of nutrients in ecosystems, and by their production of secondary metabolites of medical and biotechnological importance. Ganoderma spp. are ... -
Taxonomy in watercolor: the Specklinia endotrachys group, part 1
(2013)In the last decade orchid systematics has focused especially on assessing evolutionary relationships among species and species groups, in an attempt to produce a solid phylogenetic framework for the family. While in general ... -
Taxonomy in watercolor: the Specklinia endotrachys group, part 2
(2013)in the last decade orchid systematics has focused especially on assessing evolutionary relationships among species and species groups, in an attempt to produce a solid phylogenetic framework for the family. While in general ... -
Telimena (Telimenaceae, Phyllachorales) species on Neotropical host plants: New species, combinations and revision of species on Polygonaceae
(2022-05-25)In this investigation, we propose a new species in Telimena, T. bromeliae sp. nov. growing on bromeliads with a detailed description, illustrations, and molecular characterisation based on material collected in Costa Rica ... -
Telipogon sonia-juaniorum (Orchidaceae: Oncidiinae) a new species from Southwestern Ecuador
(2018-02-23)A new species, Telipogon sonia-juaniorum, from the semi-deciduous montane forests from Southwestern Ecuador is described and illustrated. Information about distribution, habitat, phenology, and conservation status for the ... -
Temperature and elemental sulfur shape microbial communities in two extremely acidic aquatic volcanic environments
(2021)Aquatic environments of volcanic origin provide an exceptional opportunity to study the adaptations of microbial communities to early planet life conditions such as high temperatures, high metal concentrations, and low pH. ... -
Territory size, population density, and natural history of Cabanis’s Ground Sparrow, an endemic species found in urban areas
(2021)Worldwide urban expansion threatens biodiversity inhabiting the original natural environments now being transformed, especially range-restricted species. Here, we provide estimates of population density, population size, ... -
The biogeographic and evolutionary history of an endemic clade of Middle American sparrows: Melozone and Aimophila (Aves: Passerellidae)
(2017)The large number of endemic species in Middle America is frequently attributed to the interplay of geographical barriers and historical climatic changes in the region. This process promotes genetic divergence between ... -
The cage test as an easy way to screen and evaluate spontaneous activity in preclinical neuroscience studies
(2021-02-17)Within behavioral neuroscience, subjects used to be randomly assigned to the experimental groups based on the premise that interindividual variability will be homogeneously distributed. However, the equivalence offered by ... -
The clerodane diterpene casearin J induces apoptosis of T-ALL cells through SERCA inhibition, oxidative stress, and interference with Notch1 signaling
(2016-01-28)T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic malignancy that preferentially affects children and adolescents. Over 50% of human T-ALLs possess activating mutations of Notch1. The clerodane ... -
The contrasting roles of aquatic fungi and oomycetes in the degradation and transformation of polymeric organic matter
(2019)Studies on the ecological role of fungi and, to a lesser extent, oomycetes, are receiving increasing attention, mainly due to their participation in the cycling of organic matter in aquatic ecosystems. To unravel their ... -
The coral-associated fauna and sessile benthic reef community of Pocillopora coral colonies following transplantation in Golfo Dulce, South Pacific, Costa Rica: Composition, dynamics and succession
(2021)Coral reef restoration through coral gardening and transplantation is a valuable tool in combating the loss of critical ecosystem services and biodiversity provided by coral reefs. This study follows the changes in the ...