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Search Results: 1 - 10 of 15120 matches for " Jonathan; Navarro "
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Morfología del cibario en subgéneros de Psorophora Robineau-Desvoidy (Diptera: Culicidae)
Liria, Jonathan;Navarro, Juan C.;
Neotropical Entomology , 2007, DOI: 10.1590/S1519-566X2007000600011
Abstract: we describe the cibarial morphology in eight psorophora species robineau-desvoidy: ps. (grabhamia) cingulata (fabricius), ps. (gra.) confinnis (lynch arribálzaga), ps. (janthinosoma) ferox (humboldt), ps. (jan.) albipes (theobald), ps. (jan.) cyanescens (coquillett), ps. (psorophora) lineata (humboldt), ps. (pso.) cilipes (fabricius), y ps. (pso.) ciliata (fabricius). the species belonging to subgenus grabhamia theobald are characterized by palatal papillae in central position and the presence of cibarial armature. the teeth in ps. cingulata are equal meanwhile in ps. confinnis the internal row is spatulate with apex denticulate. in janthinosoma lynch arribálzaga we observed six palatal papillae (the fore pair with less size to others) and armature absent, instead we observe small spicules toward posterior plate: abundant in ps. ferox, and few in ps. albipes and ps. cyanescens. the subgenus psorophora presents four equal size palatal papillae, cibarial armature absent, also distinctive number of trichoid sensilla (12-17), in comparison to other two subgenera (5-10). we suggest to include those diagnostic characters in the future taxonomic and systematic studies in the genus psorophora.
áreas de endemismo en haemagogus (diptera, culicidae)
Jonathan Liria,Juan Carlos Navarro
Darwiniana , 2007,
Abstract:
Clave fotográfica para hembras de Haemagogus Williston 1896 (Diptera: Culicidae) de Venezuela, con nuevo registro para el país
Liria,Jonathan; Navarro,Juan-Carlos;
Boletín de Malariología y Salud Ambiental , 2009,
Abstract: the neotropical genus heamagogus williston includes mosquitoes with diurnal activity and immature breeding on phytotelmata (tree-holes and cut bamboo internodes). haemagogus species have been involved in sylvatic yellow fever transmission, a virus circulating in forest areas in latin america among arboreal primates and marsupials by means of mosquito bite. the genus comprises 28 species, nine of them occurring in venezuela. one of these, haemagogus (comopostegus) clarki, is a new record for this country. we show here an update of the taxonomic status and the geographical distribution of the genus in venezuela and the first photographical key using simple terms for non-expert personnel.
Wyeomyia trujilloi Pulido y Sutil, 1981, nuevo sinónimo de Wyeomyia bicornis (Root, 1928) (Culicidae: Sabethini), con redescripción de la pupa parte de la larva
Navarro,Juan-Carlos; Liria,Jonathan;
Boletín de Malariología y Salud Ambiental , 2007,
Abstract: wyeomyia (wyeomyia) trujilloi pulido & sutil, 1981, is recognized as the synonym of wyeomyia (nunezia) bicornis (root 1928), based on larval chaeototaxy and mouthparts morphology, pupae and male genitals in comparison and analysis with wy. bicornis holotype, topotypes and wy. trujilloi holotype. discussion and characteristics illustration about subgeneric level are provided. the larval mouthparts morphology and pupae chaetotaxy are described and illustrated by first time, and head of larvae chaetotaxy are re-described.
Registros de mayor altitud para mosquitos (Diptera: Culicidae) en Venezuela
Navarro,Juan-Carlos; Del Ventura,Fabiola; Zorrilla,Adriana; Liria,Jonathan;
Revista de Biología Tropical , 2010,
Abstract: highest mosquito records (diptera: culicidae) in venezuela. mosquitoes (diptera: culicidae) are holometabolous insects with aquatic immature stages, which use a broad variety of larval habitats, from ground water bodies to phytothelmata (water deposits in plants) and artificial deposits. the availability of breeding sites often determines the upper limits of mosquito ranges. we built a database with 9 607 records with 432 localities, 19 genera and 254 species. the andean mountains have 77% of the highest mosquito records including aedes euris with record at 3 133 m, followed by three species of anopheles -subgenera kerteszia- with the upper limit of 2 680 m. wyeomyia bicornis and culex daumastocampa at 2 550 m were the highest records in the central- coastal cordillera, while the highest record in pantepui was wyeomyia zinzala at 2 252 m. the species associated with phytothelmata (bromeliaceae and sarraceniaceae) represent 60% of the records. the upper limits of culex quinquefasciatus and anopheles (kerteszia) species could represent the theoretical limit for transmission of filariasis or arboviruses, by culex, and malaria by anopheles (kerteszia) in venezuela. similarly, a vector of dengue, aedes aegypti, has not been not recorded above 2 000 m. rev. biol. trop. 58 (1): 245-254. epub 2010 march 01.
Registros de mayor altitud para mosquitos (Diptera: Culicidae) en Venezuela
Juan-Carlos Navarro,Fabiola Del Ventura,Adriana Zorrilla,Jonathan Liria
Revista de Biología Tropical , 2010,
Abstract: Los mosquitos (Diptera: Culicidae) son insectos holometábolos con estadios inmaduros acuáticos que utilizan una amplia variedad de hábitats larvales, desde cuerpos de agua en el suelo hasta Fitotelmata (depósitos de agua en las plantas) y depósitos artificiales. La disponibilidad de sitios de reproducción a menudo determina el límite superior del ámbito de los mosquitos. Nosotros construimos una base de datos de 9 607 registros, 432 localidades, 19 géneros y 254 especies. La coordillera Andina posee el 77% de los registros con mayor altitud incluyendo Aedes euris con un registro a 3 300 m, seguido por tres especies de Anopheles -subgénero Kerteszia- con una altitud máxima de 2 680 m. Wyeomyia bicornis y Culex daumastocampa a 2 550 m fueron los registros de mayor altitud en la cordillera Costera- Central, mientras que el record más alto en Pantepui fue Wyeomyia zinzala a 2 252 m. El 60% de los registros de máxima altitud están representados por especies asociadas con fitotelmata (Bromeliaceae y Sarraceniaceae). Los límites superiores de Culex quinquefasciatus y Anopheles (Kerteszia) podría representar el límite teórico para la transmisión de filariasis o arbovirus, por Culex y malaria por Anopheles (Kerteszia) en Venezuela. Del mismo modo, un vector del dengue, Aedes aegypti, no ha sido registrado por encima de 2 000 m. Highest mosquito records (Diptera: Culicidae) in Venezuela. Mosquitoes (Diptera: Culicidae) are holometabolous insects with aquatic immature stages, which use a broad variety of larval habitats, from ground water bodies to Phytothelmata (water deposits in plants) and artificial deposits. The availability of breeding sites often determines the upper limits of mosquito ranges. We built a database with 9 607 records with 432 localities, 19 genera and 254 species. The Andean mountains have 77% of the highest mosquito records including Aedes euris with record at 3 133 m, followed by three species of Anopheles -subgenera Kerteszia- with the upper limit of 2 680 m. Wyeomyia bicornis and Culex daumastocampa at 2 550 m were the highest records in the Central- Coastal cordillera, while the highest record in Pantepui was Wyeomyia zinzala at 2 252 m. The species associated with phytothelmata (Bromeliaceae and Sarraceniaceae) represent 60% of the records. The upper limits of Culex quinquefasciatus and Anopheles (Kerteszia) species could represent the theoretical limit for transmission of filariasis or arboviruses, by Culex, and malaria by Anopheles (Kerteszia) in Venezuela. Similarly, a vector of Dengue, Aedes aegypti, has not been not recorded above
Millimetre-Wave and Near-Infrared Signposts of Massive Molecular Clump Evolution and Star Cluster Formation
Peter Barnes,Stuart Ryder,Stefan O'Dougherty,Luis Alvarez,Adriana Delgado-Navarro,Andrew Hopkins,Jonathan Tan
Physics , 2013, DOI: 10.1093/mnras/stt607
Abstract: We report new near-infrared and mm-wave observational data on a selection of massive Galactic molecular clumps (part of the CHaMP sample) and their associated young star clusters. The clumps show, for the first time in a "dense gas tracer", a significant correlation between HCO+ line emission from cold molecular gas and Br{\gamma} line emission of associated nebulae. This correlation arises in the HCO+ line's brightness, not its linewidth. In contrast, the correlation between the N2H+ line emission and Br{\gamma} is weak or absent. The HCO+/N2H+ line ratio also varies widely from clump to clump: bright HCO+ emission tends to be more closely associated with Br{\gamma} nebulosity, while bright N2H+ emission tends to avoid areas that are bright in Br{\gamma}. Both molecular species show correlations of weak significance with infrared H2 v=1-0 and v=2-1 line emission, in or near the clumps. The H2 emission line ratio is consistent with fluorescent excitation in most of the clumps, although thermal excitation is seen in a few clumps. We interpret these trends as evidence for evolution in the gas conditions due to the effects of ongoing star formation in the clumps, in particular, the importance of UV radiation from massive YSOs as the driving agent that heats the molecular gas and alters its chemistry. This suggests that some traditional dense gas tracers of molecular clouds do not sample a homogeneous population of clumps, i.e., that the HCO+ brightness in particular is directly related to the heating and disruption of cold gas by massive young stars, whereas the N2H+ better samples gas not yet affected by this process. We therefore suggest that the HCO+-N2H+-Br{\gamma} relationship is a useful diagnostic of a molecular clump's progress in forming massive stars.
Under the Flag of Blue and White: Mary as an A-NationalSymbol in the Greek-Orthodox Community in Israel  [PDF]
Jonathan Ventura
Sociology Mind (SM) , 2011, DOI: 10.4236/sm.2011.14029
Abstract: Marian devotion and rituals have been the apex of Christian believers’ journey for centuries. In spite of its importance in many disciplines, Marian devotion and rituals in Israel have been neglected. In this article I will outline several social and religious aspects of Marian devotion in the Greek-Orthodox community in Israel. Using several case-studies of Marian devotion around the world I will address the question is Mary a national symbol in Israel? Since one of the most important Marian devotion sites is located in Israel and centered in Mary’s place of ascension in Gethsemane, addressing this site directly is crucial. I will express a new concept more fitting to the Israeli case—Mary as an a-national symbol. This research is based upon a combination of two main methodologies: participant observations and in-depth interviews with believers (local Greek and Palestinian residents as well as pilgrims) and clergymen. The research focuses on a procession taking place in the Old City of Jerusalem in the end of August, celebrating Mary’s legacy and resurrection.
On the Robustness of Strategic Experimentation to Persuasive Cheap Talk  [PDF]
Jonathan Rosborough
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.25097
Abstract: This paper develops a model in which a privately informed seller attempts to indirectly influence the experimentation strategy of a buyer by sending costless signals. The question under consideration is whether there is any credible way in which this single rational seller could influence the buyer’s decisions. We provide bounds on information transmission in equilibrium, and show that there exists no reporting strategy for the seller which changes the experimentation strategy of the buyer. These results demonstrate the robustness of a class of learning models to coercion.
Investor Na?veté and Asset Prices  [PDF]
Jonathan Cook
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.34047
Abstract:

This paper describes strategic behavior in a nonequilibrium model of asset pricing with heterogeneous sophistication. Both risk and return are increasing in the na?veté of investors in the market. Optimal investment involves in considering the effect that na?e investors have on the market. Further, we derive a simple characterization of the asset price dynamics that results from an arbitrary combination of a countably infinite set of investor types.

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