ABSTRACT
A narrowly endemic new species of Glossoloma is described from the Cordillera Oriental of the northern Andes, in the Colombian departments of Caquetá and Huila. Glossolomamagenticristatum J.L.Clark, D.Hoyos & Clavijo, sp. nov. differs from most other congeners by a habit that is usually epiphytic with elongate scandent subwoody shoots, the presence of a magenta corolla tube, and a creased calyx formed by tightly appressed adjacent lobes. A brief summary of Gesneriaceae diversity in the Colombia departments of Caquetá and Huila is discussed with an emphasis on the old highway between Florencia and Guadalupe. The conservation status of G.magenticristatum is assessed as Endangered (EN) based on IUCN Criteria.
ResumenSe describe una especie de Glossoloma endémica de la Cordillera Oriental de los Andes del norte, en los departamentos de Caquetá y Huila. Glossolomamagenticristatum J.L.Clark, D.Hoyos & Clavijo, sp. nov. se diferencia de otras especies en el género por el hábito usualmente epífito con ramas alargadas, escandentes y subleñosas, el tubo de la corola magenta, y un cáliz con los lóbulos estrechamente adpresos y con margen ondulada. Se presenta una breve síntesis de la diversidad de Gesneriaceae en los departamentos de Caquetá y Huila, con un énfasis en la vieja carretera entre Florencia y Guadalupe. Se evalúa el estado de conservación de G.magenticristatum y se propone que se debería categorizar como En Peligro (EN), de acuerdo a los criterios de la UICN.
ABSTRACT
Two new species, Drymoniaintermedia Clavijo & J.L.Clark, sp. nov. and D.longiflora J.L.Clark & Clavijo, sp. nov. (Gesneriaceae, Columneinae), are described from the western Andean slopes of Ecuador and Colombia. The new species are similar to D.fimbriata, D.laciniosa, D.macrophylla, and D.peponifera because of the facultative epiphytic habit, deeply serrate to laciniate calyx margins, and fleshy bivalved capsules with tardily dehiscent endocarps. Leaves with brochidodromous venation, narrowly elongate corolla tube, and laciniate calyx margins differentiate D.intermedia. The longest corolla of any known Drymonia (> 6.5 cm long) differentiates D.longiflora. Digital photographs, geographic distributions, and IUCN categories are provided for the new species.
ResumenSe describen dos especies nuevas de Drymonia (Gesneriaceae, Columneinae) de la vertiente occidental de los Andes ecuatorianos y colombianos: Drymoniaintermedia Clavijo & J.L.Clark, sp. nov. y D.longiflora J.L.Clark & Clavijo, sp. nov. Las nuevas especies son similares a D.fimbriata, D.laciniosa, D.macrophylla y D.peponifera por ser epífitas facultativas, con márgenes de los lóbulos del cáliz fuertemente aserradas a laciniadas y los frutos en cápsulas carnosas con endocarpos de dehiscencia tardía. D.intermedia se diferencia por las hojas con venación broquidódroma, el tubo de la corola estrechamente elongado y los lóbulos del cáliz laciniados. D.longiflora se diferencia por tener la corola más larga hasta ahora reportada para el género (> 6.5 cm de largo). Se presentan láminas fotográficas, distribuciones geográficas y categorías de amenaza de la UICN para las especies nuevas.
ABSTRACT
Resumen El padecimiento de enfermedades crónicas impacta la calidad de vida, el bienestar y el funcionamiento de los adultos mayores. De allí la necesidad de potencializar las cualidades y recursos psicológicos que incidan de forma positiva en su calidad de vida. En ese sentido, el objetivo de la investigación fue describir los niveles de resiliencia, optimismo, esperanza y sentido de vida en el adulto mayor con o sin enfermedad crónica. El diseño del estudio fue de tipo descriptivo correlacional, de corte transversal, por encuesta. Participaron 200 personas, 100 que presentaban una enfermedad crónica y 100 que no la presentaban, seleccionadas mediante muestreo no aleatorio de sujetos disponibles, residentes en Bogotá (Colombia). Se utilizaron instrumentos para medir resiliencia (Cuestionario Connor-Davidson Resilience Scale (CD-RISC 10)), optimismo (Escala de Optimismo Disposicional (DIOP)), esperanza (Escala de esperanza para adultos AHS (Adult hope scale)) y propósito vital (Test de Propósito Vital (PIL)). Los resultados indican que los adultos mayores con enfermedad crónica muestran niveles menores de resiliencia, optimismo, esperanza y propósito de vida, en comparación con los adultos mayores sin enfermedades crónicas. Lo anterior, nos permite entender que la condición de enfermedad afecta los recursos psicológicos de la persona, entendidos en esta investigación como resiliencia, optimismo, esperanza y propósito de vida, que a su vez funcionan como factores protectores de la salud mental en los procesos de enfermedad, en los cuales se visualiza la oportunidad de fortalecer o reforzan mediante el establecimiento de programas de intervención.
Abstract Having a chronic disease impacts the quality of life, well-being, and functioning of older adults. Hence the need to potentiate the psychological qualities and resources that positively impact their quality of life. In this sense, the objective of this research was to describe the levels of resilience, optimism, hope, and sense of life in older adults with or without chronic diseases. The study design is descriptive, correlational, cross-sectional, with the use of surveys. A total of 200 people participated, 100 with a chronic disease and 100 without, selected through non-random sampling of available subjects residing in Bogota (Colombia). Instruments were used to assess resilience (Connor-Davidson Resilience Scale Questionnaire [CD-RISC 10]), optimism (Dispositional Optimism Scale [DIOP]), hope (Adult Hope Scale [AHS]), and vital purpose (Vital Purpose Test [PIL]). The results indicate that older adults with chronic diseases have lower levels of resilience, optimism, hope, and life purpose, compared to older adults without chronic diseases. This allows us to understand that having a disease impacts the psychological resources of a person, understood in this research as resilience, optimism, hope, and life purpose, which in turn function as protective factors of mental health. There is an opportunity to strengthen or reinforce these factors through the creation of intervention programs.
ABSTRACT
Three new species of Columnea (Gesneriaceae, tribe Gesnerieae) are described from the western Andean slopes of northern Ecuador and southern Colombia. Columneaangulata J.L. Clark & F. Tobar and Columneafloribunda F. Tobar & J.L. Clark are described from northern Ecuador. Columneatecta J.L. Clark & Clavijo is described from southern Colombia and northern Ecuador. The three new species are facultative epiphytes with dorsiventral shoots and are readily recognized by bright red tips on the abaxial and adaxial leaf surfaces. The species described here are vegetatively similar to the sympatric species Columneapicta H. Karst. and are readily differentiated by floral features that are illustrated, described and featured with digital images.
AbstractSe describen tres especies nuevas de Columnea (Gesneriaceae, tribu Gesnerieae) originarias de la vertiente occidental de los Andes de Ecuador y Colombia. Columneaangulata J.L. Clark & F. Tobar y Columneafloribunda F. Tobar & J.L. Clark se describen del norte de Ecuador; Columneatecta J.L. Clark & Clavijo se describe del sur de Colombia y norte de Ecuador. Las tres especies nuevas son epífitas facultativas con vástagos dorsiventrales, las cuales se reconocen fácilmente por las puntas de las hojas de color rojo brillante en ambas superficies; son vegetativamente similares y simpátricas con Columneapicta H. Karst., pero se pueden diferenciar por las características florales que se ilustran, describen y detallan con imágenes digitales en este artículo.
ABSTRACT
Changes in floral pigmentation can have dramatic effects on angiosperm evolution by making flowers either attractive or inconspicuous to different pollinator groups. Flower color largely depends on the type and abundance of pigments produced in the petals, but it is still unclear whether similar color signals rely on same biosynthetic pathways and to which extent the activation of certain pathways influences the course of floral color evolution. To address these questions, we investigated the physical and chemical aspects of floral color in the Neotropical Gesnerioideae (ca. 1,200 spp.), in which two types of anthocyanins, hydroxyanthocyanins, and deoxyanthocyanins, have been recorded as floral pigments. Using spectrophotometry, we measured flower reflectance for over 150 species representing different clades and pollination syndromes. We analyzed these reflectance data to estimate how the Gesnerioideae flowers are perceived by bees and hummingbirds using the visual system models of these pollinators. Floral anthocyanins were further identified using high performance liquid chromatography coupled to mass spectrometry. We found that orange/red floral colors in Gesnerioideae are produced either by deoxyanthocyanins (e.g., apigenidin, luteolinidin) or hydroxyanthocyanins (e.g., pelargonidin). The presence of deoxyanthocyanins in several lineages suggests that the activation of the deoxyanthocyanin pathway has evolved multiple times in the Gesnerioideae. The hydroxyanthocyanin-producing flowers span a wide range of colors, which enables them to be discriminated by hummingbirds or bees. By contrast, color diversity among the deoxyanthocyanin-producing species is lower and mainly represented at longer wavelengths, which is in line with the hue discrimination optima for hummingbirds. These results indicate that Gesnerioideae have evolved two different biochemical mechanisms to generate orange/red flowers, which is associated with hummingbird pollination. Our findings also suggest that the activation of the deoxyanthocyanin pathway has restricted flower color diversification to orange/red hues, supporting the potential constraining role of this alternative biosynthetic pathway on the evolutionary outcome of phenotypical and ecological diversification.
ABSTRACT
A new species of the genus Besleria (Gesneriaceae), endemic to the department of Cauca, Colombia, is described and illustrated here. The new species, Besleria santaclarensis Clavijo & Sánchez-Taborda, was discovered in the Regional Protective Forest Reserve "Serranía El Pinche", Cordillera Occidental of the Colombian Andes. B. santaclarensis is distinguished by the epedunculate inflorescences, usually in the leafless axils near the base, with up to eight orange flowers, and by the magenta calyx that covers 2/3 of the corolla.
ABSTRACT
Two new species of Chlorospatha (section Orientales) from the western slope of the Cordillera Occidental in the departments of Valle del Cauca and Choco (Colombia) are described here. The new species represent the first records of section Orientales for Colombia, which was previously known only from the eastern Andes in Ecuador. The two new species are similar to C. longipoda, C. hannoniae and C. boosii. Chlorospatha minima sp. nov. is differentiated by its small overall size (less than 30 cm tall), blade strongly inequilateral with smooth adaxial surface, and spadix less than 2.2 cm long. Chlorospatha silverstonei sp. nov. is differentiated by its large overall size (30-60 cm tall), 1-3 leaves per plant, and quilted adaxial blade surface.
ABSTRACT
Woolly monkeys are endangered New World Primates whose natural ecological requirements are known from few sites. This study aimed to investigate the diet of woolly monkeys (Lagothrix lagothricha, Atelidae) to examine how availability determines fruit choice at local and regional scales. We followed two groups of woolly monkeys in the Mosiro Itajura-Caparú biological station in the Colombian Amazon for 16 months, and then compared our observations with previous studies for this and other sites in the Amazon and eastern Andes. We found a high prevalence of fruits in the diet of woolly monkeys in Caparú, which was supplemented with arthropods and leaves. This pattern was observed in all age/sex classes, although juveniles ate more arthropods, and females with dependent young ate more leaves than other classes. We suggest these differences might be due to intragroup competition and particular nutritional requirements in each age/sex class. When comparing the fruit diet composition in Caparú (>190 species) with four other places, we found that Moraceae, Fabaceae, and Sapotaceae were consistently important tree families in the Amazonian sites, and that forest richness is a good predictor of the diet richness. Overall, the results support the hypothesis that woolly monkeys are opportunistic frugivores that are able to adapt their diet to the forest supply and to the temporal variation in resource availability.
