Dissertations / Theses on the topic 'Ancón, Bahía de (Lima, Perú)'
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Gamero, Sobero Patricia Angélica. "Diversidad fenotípica en poblaciones de Petrolisthes violaceus (Guerin, 1835)(Crustacea, Porcellanidae) como efecto de la variabilidad del hábitat." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2009. https://hdl.handle.net/20.500.12672/883.
Full text--- The present study examines the relationship between habitat variability and its influence on the phenotype in the intertidal crab Petrolisthes violaceus. We compare two populations of P. violaceus in Ancon bay. Specimens were collected in San Francisco, beach protected of waves with significant human impact, and Ensenada Leon, beach exposed to the waves with reduced human impact. Both beaches are separated by two kilometers. Samples were monthly and began in September 2001 on protected beach and in October 2001 on semiexposed beach, both samples were completed in September 2002. The crabs were collected by hand during low tide. A total of 4893 individuals of P. violaceus were collected, 2280 females and 2613 males, 2456 of these individuals were from semiexposed beach and 2437 from protected beach. Size structure of both populations had significant differences. Mean size of the population of semiexposed beach was less than in protected beach. The frequency of males and females at both beaches was independent of the months of study. The proportion of sexes was independent of size. The morphometric relationship was used to determine morphometric size at maturity from allometric equations. We found that the morphometric size at maturity was 1.19 cm in males and females 0, 85-1,15 cm. The size at sexual maturity in females by the cumulative percentage of eggs was 1, 09 cm on semiexposed beach and 1.21 cm in protected beach. Number of eggs in stage-1 carried by females was used as an index of fecundity. We found that P. violaceus is a species with continuous reproduction because ovigerous females were collected throughout the study period, however mean fecundity during winter and spring showed the highest values. We found significant differences in fecundity for each factor space (locations), months and size. The condition factor was higher in females than in males. It showed significant differences in places and months.
Tesis
Peña, Baca Tania Sarith. "Respuestas de la comunidad del macrobentos de la Bahía de Ancón a las señales locales y remotas de El Niño." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2003. https://hdl.handle.net/20.500.12672/804.
Full text--- The variations of the oceanographic and atmospheric parameters related to El Niño Southern Oscillation (ENSO) have an impact on the marine and terrestrial communities, changing their distribution and abundance. The relationship between the local and remote abiotic parameters, and the responses of the soft-bottom macrobenthic community of Ancon Bay to these parameters during EN, was analysed. The local and remote abiotic time series and also the biological time series of the macrobenthos of Ancon Bay belong to the period March, 1990 to September, 2000, which includes two El Niño. The strong influence of both, local and remote abiotic parameters, on the macrobenthic community of Ancon Bay was demonstrated. The increase of the biomass of both, the community and the species, was slower than that of the density. It was also concluded that the responses of the species to EN would be related to their r- and K-strategist characteristics. The opportunists (r-strategist), such the polychaetes Paraprionospio pinnata, Owenia collaris, the ophiuroid Ophiactis kröyeri and the phoronid Phoronis sp., are earlier or simultaneous to the onset of EN events; on the other hand, the competitors (K-strategist), such the nemertine undet. 1, the bivalve Pitar catharius, the polychaete Leitoscoloplos chilensis and the decapod Pinnixa valdiviensis are delayed to EN events.
Tesis
Velásquez, Rodríguez Karen Isabel. "Microturbelarios de la zona litoral de la playa San Francisco – Ancón, Lima." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/9396.
Full textLos turbelarios conforman uno de los grupos más basales de los bilateria, habitan ecosistemas acuáticos continentales y marinos. Estudios sobre la diversidad de turbelarios son escasos en nuestro país. El Perú sólo cuenta con registros recientes de turbelarios de ambientes continentales; sin embargo, los registros de especies de ambientes marinos son prácticamente inexistentes. Bajo este contexto, el presente trabajo registra y describe la fauna de turbelarios marinos que habitan la Bahía de Ancón (Playa San Francisco). Se reporta por primera vez para el Perú cinco especies: Alcha evelinae (Polycistididae), Trigonostomum galapagoensis (Trigonostomidae), Itaipusa divae (Koinocystididae), Urastoma sp. (Urastomidae) y una especie sin determinar de la familia Cylindrostomidae. Además, la descripción de T. galapagoensis constituye la primera desde su descripción original hace 44 años.
Tesis
Sotil, Caycho Giovanna Elizabeth. "Variación estacional de la madurez gonadal y oogénesis de Chiton cumingsii Frembly, 1827 de Bahía Ancón, Lima-Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/1408.
Full text--- Chiton cumingsii is a short-distributed species habitant of the intertidal zone fron the cold waters of the Peruvian-Chilean Province (7º-18ºSL), that in high temperatures (19ºC) after the El Niño Event 1997-98, variations in the cycle of the gonadal maturity were observed demanding more metabolic energy following on growth and reproduction, with negative effects in the individuals morphometric and the oocytes citometric. Analysis of variations in the gonadal maturity was done evaluating the gonadal indices and histological features in samples collected from october 1998 to november 1999 in Ancon Bay, while by histochemical analysis was described the morphological development and oocytes-carbohydrates dynamics in oogenesis. The sex ratio was of 4:3 in favor to males without significant differences, except during the spawning stage of april and august. No significant differences between sexes were found in the morphological measures, but higher correlations between length and weight were observed in males. In reproductive analysis, the onset of gametogenesis coincided with increasing sea temperatures in early autumn and decreasing temperatures in spring. Spawnings were in decreasing temperatures in later winter–spring with higher gonadic index values. Histological and histochemical results differentiated five cellular stages in oogenesis. Oogonia, 14_m cells with scarce basophilic cytoplasm are surrounded by few flat follicle cells. In pre-vitellogenetic immature oocytes occurs an increment of mucopolysaccharid acid in cytoplasmic vesicles, while at the end of the immature terminal oocytes (Oc2) begins the vitellogenesis with a reduction of vesicle size, presence of PAS and glycogen-like material spots near them, and the beginning of chorion formation. Dense masses of yolk in primary vitellogenic in mature oocytes (Oc3) completely fill the cytoplasm, decreasing the basophily in secondary vitellogenic mature oocytes (Oc4). Reaching full growth 165_m oocyte size, a chorion differentiated into a series of 38 _m cupules-shape length with distal folds, structured by three (mucopolysaccharid, glycoproteins and lipids) layers. Even no seasonal variations in quantity of reserve material were found, considerable reductions in oocyte size were related to the higher temperatures of 19°C. The presence of glycoproteins in follicle cells is attributed to the chorion formation, while a gradient in mucopolysaccharid and glycogen material during maturity indicates a transfer activity between follicle cells and oocytes.
Tesis
Cabanillas, Núñez Rossana Cinthia. "Cambios en la señal interanual de la comunidad macrobentónica de fondo blando asociados a los eventos El Niño durante el periodo 1992-2008 en la bahía de Ancón." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6204.
Full textCompara los cambios de la señal interanual de los parámetros comunitarios del macrobentos y los parámetros oceanográficos, así también establece la relación entre estos parámetros durante los eventos El Niño comprendidos entre los periodos 1992-1999 y 2000-2008. Realiza un análisis de series de tiempo mediante el análisis de Wavelets, Wavelet Coherence y un análisis de Fase. Encuentra en la serie de tiempo de los parámetros comunitarios y fisicoquímicos, señales interanuales importantes de ciclos del periodo 2-3 años y 4-8 años, siendo afectada la señal de 2-3 años después de los 90s. La especie dominante S. bassi presenta en su densidad y biomasa un ciclo muy parecido a los hallados en los parámetros comunitarios y parámetros fisicoquímicos, mientras que la densidad y biomasa de P. pinnata y M. phyllisae presentaron un ciclo interanual más intenso después de los 90s, además de una importante señal anual. Evidencia una correlación significativa de las señales interanuales de los parámetros comunitarios y oceanográfica asociado a EN moderado y extraordinario además de la importante relación a señales anuales después de los 90s. Encuentra un posible cambio de régimen de las señales interanuales de los parámetros comunitarios y oceanográficos entre los años 2001/2002.
Tesis
Fleischman, Ruzo Claudia Denise. "Centro socio-cultural de Ancón." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/624858.
Full textThis thesis proposes a Sociocultural Center situated in the community of Ancón, in Lima, Perú. Ancón is divided into two parts: it´s coastal area and it´s district, which both suffer from bad urban articulation between one another. On one hand, around fall, winter and spring, the pier lacks cultural and social activities. On the other hand, the district doesn´t have enough public institutions for cultural experiences. The land for the project is ideal because of it´s strategic location. It is situated between both main parts of Ancon and surrounded by other important areas. This easily creates a social, cultural and touristic center. The Project aims to unify the district and the coastal area, while also reactivating the pier and bringing back to life the musical essence of the community that was once recognized for it´s Ancon´s Song Festival. To focus on the architectural aspect, the design concentrates on working in two scales of articulation. The first one, a macro scale, proposes to unify both parts with public spaces and organized activities. The second scale is a more micro architectural view. It aims to work on the visual and spatial aspects of the different activities being experienced throughout the center.
Tesis
Manrique, Aliaga César. "Centro cultural en Ancón." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2015. http://hdl.handle.net/10757/579815.
Full textMuñoz, Arrieta Ramón Noé. "Actividad antimicrobiana de extractos etanólicos y hexánicos obtenidos a partir de macroalgas marinas de la Bahía de Ancón." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/5507.
Full textEvalúa los extractos etanólicos y hexánicos obtenidos de especies de macroalgas marinas (Ahnfeltiopsis furcellata, Chondracanthus chamissoi, Polysiphonia sp., Grateloupia doryphora, Rhodymenia corallina, Cladophora sp., Ulva nematoidea, Ulva lactuca, Ulva enteromorpha) para determinar su actividad antibacteriana frente a los microorganismos Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 9027, Salmonella typhimurium ATCC 14028 , Staphylococcus aureus ATCC 6538, Bacillus subtilis ATCC 6633, Enterococcus faecalis ATCC 51922.
Tesis
Ríos, Farfán Gabriela de los. "Comportamientos funerarios a fines del horizonte medio en el área de Ancón-Miramar." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2011. http://tesis.pucp.edu.pe/repositorio/handle/123456789/1457.
Full textCabrera, Carranza Carlos Francisco. "Estudio de la contaminación de las aguas costeras en la bahía de Chancay : propuesta de recuperación." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2002. https://hdl.handle.net/20.500.12672/2539.
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Santome, Sanchez Selma Heini. "Variabilidad de la proporción de fases del alga roja Chondracanthus chamissoi (C. Agardh) Kützing “yuyo” en la bahía de Ancón." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/8044.
Full textChondracanthus chamissoi (C. Agardh) Kützing (Rhodophyta: Gigartinaceae) es una macroalga marina de importancia comercial para el Perú. Poblaciones del intermareal rocoso de la bahía de Ancón, en Lima, fueron estudiadas mediante muestreos mensuales no destructivos en dos áreas, desde abril de 1996 hasta marzo de 2007, con la finalidad de establecer la proporción de fases. Un mínimo de cien matas fueron evaluadas macroscópicamente para determinar la fase del ciclo de vida. Aquellas que no presentaron estructuras reproductivas macroscópicas, fueron diferenciadas como gametofitos o tetrasporofitos, utilizando la prueba de resorcinol. La densidad de matas tuvo un comportamiento estacional, ya que fue mayor en primavera y verano, y menor en invierno. El evento El Niño 97-98 coincidió con un incremento de la densidad, la cual luego decayó abruptamente por el efecto de la herbivoría intensiva. Sin embargo, este hecho no se repitió durante el periodo de estudio. El 51% de las frondas muestreadas no presentaron estructuras reproductivas visibles macroscópicamente. Este alto número se debió a que las estructuras reproductivas de los gametofitos masculinos son microscópicas. Finalmente, se calculó un promedio de un 63.8% de gametofitos y un 36.2% de tetrasporofitos, tendencia que se mantuvo para la mayoría de los meses muestreados, estableciéndose una proporción de fases de 64:36 (gametofitos: tetrasporofitos) para C. chamissoi de la bahía de Ancón.
Tesis
Delgado, Duncan Ariana Milagros. "Entre yates y anconetas : La disputa por la apropiación del espacio público en Ancón de 1970 a la actualidad." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9547.
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Gómez, Martinez Lisset Carito. "Biología reproductiva de Geositta peruviana (Passeriformes: Furnariidae) en la zona reservada Lomas de Ancón, Lima-Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/11039.
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Pastor, Rubio Lorena María. "Performando el self : narrativas y experiencia de un grupo de jóvenes internos e internas en el Penal Modelo Ancón II (2014-2018)." Doctoral thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/19496.
Full textValle, Vera María Lucía. "El enemigo en la sombra: la población chilena en Lima y el antichilenismo popular (1884-1929)." Master's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9126.
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Navea, Talavera Ricardo. "Uso del entorno virtual de aprendizaje ECOVIT para el desarrollo complementario de capacidades de cuidado y conservación del medio ambiente en los alumnos visitantes del nivel primario de un Centro de Investigación Biológica del Distrito de Ancón." Master's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/19861.
Full textHuaman, Conza Teófilo Gerardo. "Influencia de Programa de Entrenamiento Físico Militar, en el control del sobrepeso del personal naval de 25 a 39 años de edad, de la Fuerza de Infantería de Marina del distrito de Ancón - Lima, en el año 2018." Master's thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/11484.
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