Biología
Envíos recientes
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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 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 ... -
Collateral effects of microplastic pollution on aquatic microorganisms: An ecological perspective
(2018-12-05)Microplastics (MP) provide a unique and extensive surface for microbial colonization in aquatic ecosystems. The formation of microorganism-microplastic complexes, such as biofilms, maximizes the degradation of organic ... -
Biogeographical assessment of myxomycete assemblages from Neotropical and Asian Palaeotropical forests
(2017-03-16)Aim Lowland/highland and Neotropical/Asian Palaeotropical assemblages of myxomycetes were compared to test the null hypothesis that neither species diversity nor species composition differs between the two ecoregions. ... -
¿Funcionan realmente los microorganismos de montaña (MM) como estrategia de biofertilización? Un enfoque de ingeniería de biosistemas
(2017-06-29)El uso de microorganismos en aplicaciones ingenieriles, en particular desde un contexto de ingeniería de biosistemas tropicales, es útil para comprender el efecto de variables que determinan la dinámica microbiológica ... -
Different Messages are Transmitted by Individual Duet Contributions and Complete Duets in a Species with Highly Overlapped Duets
(2018)Background: Duet function hypotheses have been mostly studied in bird species that produce duets with male and female solo songs. However, in order to understand if patterns of duet function are similar across all duetting ... -
Conceptual and statistical problems with the use of the Shannon-Weiner entropy index in bioacoustic analyses
(2018-04-03)Information theory and its indices were developed for human communication to predict the amount of information transferred in a message. One such index, the Shannon-Weiner index (SWI), has often been used to analyse ... -
Kinship, association, and social complexity in bats
(2019-01)Among mammals, bats exhibit extreme variation in sociality, with some species living largely solitary lives while others form colonies of more than a million individuals. Some tropical species form groups during the day ... -
Dual Function of Chip Calls Depending on Changing Call Rate Related to Risk Level in Territorial Pairs of White-Eared Ground-Sparrows
(2017-03)Different mechanisms have been proposed for encoding information into vocalizations: variation of frequency or temporal characteristics, variation in the rate of vocalization production, and use of different vocalization ... -
sandy.beaches.ecology.cvs
(2019-01)The data were taken from 28 sandy beaches of Costa Rica (16 from the Pacific Coast and 12 from the Caribbean). This study aimed to (1) determine the differences of sediment and beach characteristics between both Pacific ... -
Biología molecular del virus del rayado fino del maíz
(1986-06)A condensed report of research on the molecular biology of Maize Rayado Fino Virus is offered, along with a tentative model for the capsid structure that fits the biochemical analysis of this virus. Given the existence of ... -
La viuda negra en Costa Rica: información general
(2016)La viuda café (Latrodectus geometricus) ha sido probablemente introducida a América desde la región mediterránea de África. Desde su llegada a Costa Rica, esta especie ha expandido su distribución rápidamente colonizando ... -
Lactrodectismo en Costa Rica
(2017)Se reporta un accidente causado por la araña Latrodectus geometricus, incluida en el grupo conocido como “viudas negras”, en Costa Rica. El accidente le ocurrió a una mujer de 27 años vecina de la ciudad de Cartago, en su ... -
Functional changes in web design along the ontogeny of two orb-weavers
(2017-08-01)Orb webs evolved primarily to capture prey, though they also have other functions. Recently, it has been argued that the orb web does not work as a functional unit, but instead some sections or components have presumably ... -
New data about the Costa Rican aphid fauna (Hemiptera, Aphididae)
(2012-12)New data about the Costa Rican aphid fauna (Hemiptera, Aphididae). Graellsia, 68(2): 305-312. Aphids were collected from 39 locations throughout Costa Rica, representing a wide altitudinal range, and from both crops and ... -
Greenidea psidii (Hemiptera: Aphididae: Greenideinae) New Invasive Aphid in Costa Rica
(2009-06)Greenidea (Trichosiphum) psidii van der Goot 1916 is recorded for the first time in Costa Rica and Central America. The species has been recorded on Psidium guajava, Psidium friedrichst halianum and Myrciaria cauliflora ... -
A new species of Rhopalosiphum (Hemiptera, Aphididae) on Chusquea tomentosa (Poaceae, Bambusoideae) from Costa Rica
(2012-01)The new species Rhopalosiphum chusqueae Pérez Hidalgo & Villalobos Muller, is described from apterous viviparous females caught on Chusquea tomentosa in Cerro de la Muerte (Costa Rica). The identity of the species is ... -
First report of Diaphorina citri (Hemiptera: Psyllidae) in Costa Rica
(2005-09)The Asian psyllid was reported in Rio de Janeiro, Brazil, by Costa Lima (1942) and by Catling (1970). In June 1998, the insect was detected in Florida and by September 2000 this pest had spread to 31 Florida counties ... -
Isolation of Fungi and Bacteria Associated with the Guts of Tropical Wood-Feeding Coleoptera and Determination of Their Lignocellulolytic Activities
(2015-08)The guts of beetle larvae constitute a complex system where relationships among fungi, bacteria, and the insect host occur. In this study, we collected larvae of five families of wood-feeding Coleoptera in tropical forests ...
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