Browsing Biología by Title
Now showing items 483-502 of 1179
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El factor humano en la regeneración de bosques
(2004-06)Se proponen ideas prácticas para la recuperación de bosques, valorando tres estrategias: A) Regeneración natural, sin intervención antropógena más allá de la protección física (ej., cercas, vallas, rondas contra incendios) ... -
Factors affecting phenological patterns of bombacaceous trees in seasonal forests in Costa Rica and Mexico
(2003)We compared phenological patterns of tree species of the family Bombacaceae in three seasonal forests in Mexico and Costa Rica whose dry seasons vary in duration and intensity. The objectives were to (1) determine intraspecific ... -
Fallen Branches as Part of Leaf-Cutting Ant Trails: Their Role in Resource Discovery and Leaf Transport Rates in Atta cephalotes
(2007)Fallen branches, logs, and exposed roots (fallen branches hereafter) commonly form part of the trunk trail system of leaf-cutting ants that inhabit the tropical rain forest. We studied the role of fallen branches on resource ... -
La familia Bombacaceae (Malvales) en Costa Rica
(1997)General descriptions and taxonomic keys to the nine genera (Bernoullia, Ceiba, Huberodendron, Matisia, Ochroma, Pachira, Pseudobombax, Quararibea, and Spirotheca) and twenty-four species of Bombacaceae species known to ... -
La fase Terrestre de la Tortuga lora 1081Lepidochelys olivacea
(1980)Esta investigación estudia algunos aspectos de la fase terrestre del ciclo de vida de la tortuga lora Lepidochelys olivacea -
Feeding by Philoponella vicina (Araneae, Uloboridae) and how uloborid spiders lost their venom glands
(2006)Feeding by uloborid spiders is unusual in several respects: cheliceral venom glands are absent; prey wrapping is extensive (up to several hundred metres of silk line) and severely compresses the prey; the spider’s mouthparts ... -
Feeding effectiveness of Megaphobema mesomelas (Araneae, Theraphosidae) on two prey types
(2012)Prey selection is essential for individual fitness; therefore, it would be expected that a predator would select prey of a higher rank (energy/time) when exposed to prey of differing quality. In this paper, we compare the ... -
Feeding habits of the Pacific bearded brotula Brotula clarkae Hubbs, 1944 (Ophidiidae) along the Pacific coast of Costa Rica, Central America
(2016)The present study analyzed the diet composition, ontogenetic shifts and dietary overlap of Brotula clarkae in relation to stage of maturity and sex. Samples were collected from the trawling fishery along the Pacific coast ... -
Fenología de Crescentia alata (Bignoniaceae) en Guanacaste, Costa Rica
(2019)Los estudios fenológicos generan información que contribuye con el conocimiento de las relaciones entre especies y componentes abióticos de los ecosistemas, disponibilidad de alimento para animales y regeneración de cobertura ... -
Fenología de especies de árboles de la Península de Osa y la región de Golfo Dulce, Costa Rica
(2007)Se presentan datos sobre fenología de hojas, flores y frutos de 74 especies de árboles de la Península de Osa y Golfo Dulce, al Sureste de Costa Rica. Los datos fueron obtenidos de observaciones directas de árboles no ... -
Fermented food consumption in wild nonhuman primates and its ecological drivers
(2021)Objectives: Although fermented food use is ubiquitous in humans, the ecological and evolutionary factors contributing to its emergence are unclear. Here we investigated the ecological contexts surrounding the consumption ... -
Fern Distortion Syndrome of Leatherleaf Fern in Costa Rica: Symptoms, Incidence, and Severity
(Plant Disease, vol. 94, n. 8, 2010, 2010)A syndrome has been recognized on leatherleaf fern (Rumohra adiantiformis) in Costa Rica for many years that causes widespread damage but has not been described in the literature. A full description of the syndrome, termed ... -
Filogenia de los grupos de especies de Holopothrips y grupos cercanos (Phlaeothripidae: Tubulifera: Thysanoptera)
(2016)En este trabajo se exponen los resultados de un análisis formal de filogenia efectuado con una matriz de 25 caracteres morfológicos y 38 taxa. La resolución no permite ubicar los parentescos de todas las especies de forma ... -
Filogenia en base a caracteres morfológicos del género Camisia von Heyden (Acari: Oribatida): un estudio de la importancia de los caracteres en la determinación de grupos naturales
(2014-04)Se presenta un análisis filogenético de las especies del género Camisia y se incluyen cinco de los géneros habitualmente considerados dentro de la familia Camisiidae. La filogenia indica que hay dos linajes claramente ... -
First Breeding Record of Wilson’s Plover (Charadrius wilsonia) from the Pacific Coast of Colombia
(2004)Wilson’s Plover (Charadrius wilsonia) occurs year-round along the Caribbean and Pacific coasts of Colombia. The species frequents a variety of coastal habitats including sandy beaches, tidal flats, and small swamps and ... -
First description of the nest and eggs of the Sooty-faced Finch
(1994)Sooty-faced Finches (Lysurus crassirostris) occur in dense undergrowth of wet forests that border streams along the Caribbean slope of Costa Rica between 600 to 1500 m in altitude. Its distribution is from Cordillera de ... -
First evidence for an aposematic function of a very common color pattern in small insects
(2021-02-11)Many small parasitoid wasps have a black head, an orange mesosoma and a black metasoma (BOB color pattern), which is usually present in both sexes. A likely function of this widespread pattern is aposematic (warning) ...