Browsing Biología by Title
Now showing items 816-835 of 874
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Tie them up tight: wrapping by Philoponella vicinaspiders breaks, compresses and sometimes kills their prey
(2006)We show that uloborid spiders, which lack the poison glands typical of nearly all other spiders, employ thousands of wrapping movements with their hind legs and up to hundreds of meters of silk line to make a shroud that ... -
Los tisanópteros del grupo genérico Anaphothrips (Thysanoptera: Thripidae), con énfasis en América Central
(Rev. Biol. Trop. (Int. J. Trop. Biol.), v. 55, n. 1, 2007, 2007)Thysanopterans of the generic group Anaphothrips (Thripidae: Thripinae) with emphasis in Central America. A taxonomic revision and phylogenetic analysis of the generic group Anaphothrips are presented. Several genera in ... -
Tissue Inhibitor of Metalloproteinase-1 Is Confined to Tumor-Associated Myofibroblasts and Is Increased With Progression in Gastric Adenocarcinoma
(2016)The tissue inhibitor of metalloproteinase-1 (TIMP-1) inhibits the extracellular matrix–degrading activity of several matrix metalloproteinases, thereby regulating cancer cell invasion and metastasis. Studies describing the ... -
To beg or to freeze: multimodal sensory integration directs behavior in a tadpole
(2012)Effective coordination of behaviors such as foraging and avoiding predators requires an assessment of cues provided by other organisms. Integrating cues from multiple sensory modalities may enhance the assessment. We studied ... -
Tolerance and sorption of Bromacil and Paraquat by thermophilic cyanobacteria Leptolyngbya 7M from Costa Rican thermal springs
(2019)We studied the adsorption ability and tolerance of the thermophilic filamentous cyanobacteria Letolyngbya 7M towards Paraquat and Bromacil. Adsorption isotherms at pH = 7.0 showed an adsorption capacity of 24.4 mg/g and ... -
Transformation of humic substances by the freshwater Ascomycete Cladosporium sp.
(2017)The ecological relevance of fungi in freshwater ecosystems is becoming increasingly evident, particularly in processing the extensive amounts of polymeric organic carbon such as cellulose, chitin, and humic substances (HS). ... -
Tree turnover in a premontane neotropical forest (1998–2009) in Costa Rica
(2011)Tropical premontane forests between 700 and 1,400 m.a.s.l. represent a particular component of the gamma diversity of neotropical ecosystems; however, the extent of information about their dynamics lags behind the more ... -
Trichoptera
El orden Trichoptera (en inglés llamado “caddisflies”) pertenece al grupo de órdenes de insectos, en los cuales la totalidad de las especies depende del medio acuático para su desarrollo. ... -
Trophic ecology of sea urchins in coral-rocky reef systems, Ecuador
(2016-01-14)Sea urchins are important grazers and influence reef development in the Eastern Tropical Pacific (ETP). Diadema mexicanum and Eucidaris thouarsii are the most important sea urchins on the Ecuadorian coastal reefs. This ... -
Two new species of Echinosepala (Orchidaceae: Pleurothallidinae)
(2017)We describe and illustrate two new species of Echinosepala from Costa Rica, they are placed within a phylogenetic framework of the genus, and compared to their closest relatives. A short resume of the genus’ history is ... -
Two new species of Graphocephala Van Duzee from Costa Rica (Cicadellidae: Cicadellinae)
(2006-08)The genus Grahocephala, which was described by Van Duzee (1916), is a large complex group distributed from southern Canada to Colombia, Venezuela, and French Guiana. Young (1977) revised the genus and described twelve new ... -
Two new species of Kapateira Young from Costa Rica (Auchenorrhyncha: Cicadellidae: Cicadellinae)
(2006-08)The genus Kapateira was described by Young (1977), who included one species from Colombia but noted that the genus also occurs in Panama, Venezuela, Eucador, and Bolivia. In this paper two new species are decribed, K. ... -
Two new species of oribatid mites (Acari, Oribatida) with auriculate pteromorphs from Costa Rica, including a key to all species of Galumna (Galumna) of the Neotropical region
(2015-04-17)Two species of oribatid mites with auriculate pteromorphs, Truncozetes paraecuadoriensis sp. nov. and Galumna paraoctopunctata sp. nov., are described from leaf litter of secondary forest in Costa Rica. Truncozetes ... -
Two new species of Pergalumna (Acari, Oribatida, Galumnidae) from Costa Rica, including a key to all species of the genus from the Neotropical region
(2014)Two new species of oribatid mites of the genus Pergalumna (Oribatida, Galumnidae), P. elongatiporosa sp. n. and P. striatiprodorsum sp. n., are described from leaf litter of a secondary forest in Costa Rica. Pergalumna ... -
Two new species of Pleurothallis (Orchidaceae: Pleurothallidinae) allied to P. cardiothallis, with a note on flower activity
(2017)Two new species of Pleurothallis subsection Macrophyllae-Fasciculatae from Costa Rica, allied to P. cardiothallis, are described and illustrated, and their relationships discussed. Pleurothallis scotinantha is compared ... -
Two new species of Rhagovelia (Hemiptera: Heteroptera: Veliidae) from Costa Rica, with a key and new records from the country
(2015)Rhagovelia danpolhemi sp. nov., from the Caribbean Slope of Costa Rica and R. springerae sp. nov., from the northern portion of the country, are described, illustrated, compared with similar species, and included in a key ... -
Two new species of Scheloribatidae (Acari, Oribatida) from Costa Rica
(2015-06-30)Two new species of oribatid mites of the family Scheloribatidae, Scheloribates costaricensis sp. nov. and Perscheloribates paraluminosus sp. nov., are described from leaf litter of secondary forest in Costa Rica. Scheloribates ... -
Two novelties in genus Platystele (Orchidaceae: Pleurothallidinae) from Costa Rica
(2017)Two new species of Platystele allied to P. oxyglossa complex are described from Costa Rica. Platystele carl-lueriana can be distinguished from P. catiensis and P. oxyglossa by the compact inflorescence that barely exceeds ... -
Ultrastructural and microbial analyses of cellulose degradation in leaf-cutter ant colonies
(2017)Leaf-cutter ants (Atta and Acromyrmex) use fresh leaves to cultivate a mutualistic fungus (Leucoagaricus gongylophorus) for food in underground gardens. A new ant queen propagates the cultivar by taking a small fragment ...