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Strategic adjustment of copulatory plug size in a nematode

Current Zoology 2019年第5期65卷 571-577页

作者： jorge Canales-LAZCANO jorge contreras-garduno Carlos CORDERO Posgrado en Ciencias Biomedicas Institute)de EcologiaUNAMCircuito Exterior S/Nanexo al Jardfn Botanico exteriorCiudad UniversitariaCiudad de MexicoMexico Escuela Nacional de Estudios Superiores Universidad Nacional Autonoma de MexicoUnidad MoreliaAntigua Carretera a Patzcuaro No.8701Col.Ex-Hacienda San Jose de la HuertaMoreliaMichoacanMexico Departamento de Ecologia Evolutiva Instituto de EcologlaUNAMCircuito Exterior S/Nanexo al Jardin Botanico exteriorCiudad UniversitariaCiudad de MexicoMexico

Copulatory plugs(CP)are substances produced during copulation that block the genital openings of the *** several species of Nematoda,males produce CP that are thought to impede female remating and thus sperm *** relatively large size of the CP in several nematodes,and its evolutionary loss in self-fertilizing populations of Caenorhabditis elegans,suggests that CP are costly to *** CP production is costly,the application of basic concepts of strategic ejaculation theory suggests a modulated allocation of CP in response to sperm competition *** hypothesis led us to predict that males perceiving a higher risk of sperm competition will produce larger *** tested these ideas with the entomopathogenic,gonochoristic nematode Rhabditis *** first experiment provides evidence suggesting that production of CP is costly,because the size of CP is negatively affected by stressful conditions(high population density,small male adult size,and suboptimal food type).The results of our second experiment support the prediction that males adjust the size of CP to sperm competition risk:the average size of CP increased as the number of males competing for one female ***,our study supports the idea that in *** the production of CP is costly for males and that the size of the CP produced is influenced by sperm competition risk.

关键词： copulatory plug sexual selection sperm competition strategic ejaculation nematodes

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Sexual dimorphism in immune response： Testing the hypothesis in an insect species with two male morphs

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Insect Science 2013年第5期20卷 620-628页

作者： Gloria Ruiz-Guzman jorge Canales-Lazcano Jesus Guillermo Jimenez-Cortes jorge contreras-garduno Centro de Investigacion Sobre Enfermedades Infecciosas Instituto Nacional de Salud Publica Av. Universidad No. 655 C. P. 62100 Cuernavaca Morelos Departamento de Biologia Divisi6n de Ciencias Naturales y Exactas Universidad de Guanajuato Guanajuato Departamento de Ecologia Evolufiva Instituto de Ecologia Universidad Nacional Autonoma de Mexico Apdo. Postal 70-275 04510 Mexico D. F. Mexico

It has been proposed that given that males should invest in sexual traits at the expense of their investment in immune response, females are better immunocompetent than males. Typically, this idea has been tested in monomorphic species, but rarely has been evaluated in polymorphic male species. We used Paraphlebia zoe, a damselfly with two male morphs： the black-winged morph （Black-W） develop black spots as sexual traits and the hyaline-winged morph （Hyaline-W） resembles a female in size and wings color. We predicted that Black-W should have a lower immune response than Hyaline-W, but that the latter males should not differ from females in this respect. Nitric oxide （NO） and phenoloxidase （PO） production, as well as hemolymph protein content, were used as immune markers. Body size （wing length） was used as an indicator of the male condition. The results show that, as we predicted, females and Hyaline-W had higher values of NO than Black-W, corresponding to differences in size. However, the opposite was found in relation to PO production. Females had the highest levels of hemolymph protein content, whereas no differences were found between Black-W and Hyaline-W. These results partially support the sexual selection hypothesis and are discussed in the context of the life history of this species. Black-W, Hyaline-W, and females could express the immune markers that are prioritized by their particular condition, and probably neither of them could express all immune markers in an elevated manner, as this would result in an excessive accumulation of free radicals.

关键词： immune response male morphs Paraphlebia zoe polymorphic species,territoriality trade-off

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Spider odors induce stoichiometric changes in fruit fly Drosophila melanogaster

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Current Zoology 2021年第1期67卷 127-129页

作者： Ronalds KRAMS Tatjana KRAMA Maris MUNKEVICS Sarah EICHLER David M.BUTLER Linda DOBKEVICA Priit JOERS jorge contreras-garduno Janina DAUKSTE Indrikis A.KRAMS Plant Health Estonian University of Life SciencesTartu 51006Estonia Department of Biotechnology Daugavpils UniversityDaugavpils 5401Latvia Institute of Ecology and Earth Sciences University of TartuTartu 51010Estonia Department of Zoology and Animal Ecology Faculty of BiologyUniversity of LatviaRiga 1004Latvia Department of Biological Sciences Kent State UniversityOhioSalem 4460USA Department of Plant Sciences University of TennesseeKnoxville 37996-4561USA Department of Environmental Science Faculty of Geography and Earth SciencesUniversity of LatviaRiga 1004Latvia Department of General and Microbial Biochemistry University of TartuTartu 51010Estonia Escuela Nacional de Estudios Superiores Unidad Morelia Universidad Nacional Autonoma de MexicoMorelia 58190Mexico Institute of Food Safety Animal Health and Environment BIORRiga 1076Latvia Department of Psychology University of TennesseeKnoxville 37996-4561USA

Animal senses and signals are amazingly diverse,and the major modalities by which animals acquire sensory input from their environments are sound,light,vibration,and chemical *** mainly rely on visual,nociceptive,and olfactory cues to discriminate between rewards and *** has been shown that the visual and olfactory cues of predators substantially affect the adult phenotype in Drosophila melanogaster(Krams et al.2016),a prominent animal model for biological research.

关键词： melanogaster cues Drosophila

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In the monarch butterfly the juvenile hormone effect upon immune response depends on the immune marker and is sex dependent

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Open Journal of Ecology 2013年第1期3卷 53-58页

作者： Guadalupe Villanueva Humberto Lanz-Mendoza Salvador Hernandez-Martinez Minerva Sanchez Zavaleta Javier Manjarrez Jose Mcontreras-garduno jorge contreras-garduno Center of Research in Biotic Resources Autonomous University of Mexico StateTolucaMexico Center of Research in Infectious Diseases National Institute of Public HealthCuernavacaMexico Institute of Ecology National Autonomous University of MexicoMexico CityMexico Department of Biology University of GuanajuatoGuanajuatoMexico

In insects, juvenile hormone (JH) decreases or has any effect upon the phenoloxidase (PO) activity, and favors or decreases the Antimicrobial Peptides (AMPs) expression. Although there is no information about the differential effect of such hormone, two possibilities are that it depends on (a) the immune marker recorded and (b) sexual differences. Here, three commonly used immune markers, Phenoloxidase (PO), hydrogen peroxide (H2O2), and lytic activity, were measured 3, 6 and 24 hours after administration of methoprene (JHa, an analog of juvenile hormone) in male and female monarch butterflies (Danaus plexippus). At 3 and 6 h post-JHa administration, the PO activity increased in females but it only increased at 3 h in males, whereas H2O2 levels increased only in females at 3 h. For the remaining times the JHa had a null effect on POand H2O2. On the other hand, the JHa had a null effect for lytic activity in both sexes at 3, 6 and 24 h. To our knowledge, this is the first report of a positive effect of a JHa onPOand H2O2 and suggests that this effect is sex dependent.

关键词： Immune Response Life History Juvenile Hormone Reproductive Diapause Nitric Oxide

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Temperature dependence of InAs/GaAs quantum dots solar photovoltaic devices

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Journal of Semiconductors 2014年第5期35卷 21-25页

作者： E.garduno-Nolasco M.Missous D.Donoval J.Kovac M.Mikolasek School of Electrical and Electronic Engineering.The University of Manchester Institute of Electronics and Photonics Slovak University of Technology

This paper presents the temperature dependence measurements characterisation of several InAs/GaAs quantum dots （QDs） solar cell devices. The devices with cylindrical geometry were fabricated and characterised on-wafer under 20 suns in a temperature range from 300°K to 430°K. The temperature dependence parameters such as open circuit voltage, short circuit density current, fill factor and efficiency are studied in detail. The increase of temperature produces an enhancement of the short circuit current. However, the open circuit voltage is degraded because the temperature increases the recombination phenomena involved, as well as reducing the effective band gap of the semiconductor.

关键词： quantum dots solar cells III-V semiconductors inter-dot doping efficiency temperature depen- dence

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火电厂多代理控制系统(英文)

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控制理论与应用 2004年第3期21卷 405-410页

作者：常江 Kwang Y.LEE Raul garduno-RAMIREZ 深圳职业技术学院机械电气工程系广东深圳518055 美国宾西法尼亚州州立大学电气工程系电气研究所仪器控制组(IIE)

针对火电厂非线性、多变量和多控制目标的特点,设计了一个火电厂多代理控制系统(PPMACS).在PP MACS中,前馈控制代理(FFCAs)采用神经模糊系统进行决策,反馈控制代理(FBCAs)采用基于遗传算法的模糊系统进行决策.优化任务分解代理(OTDAs)... 详细信息

针对火电厂非线性、多变量和多控制目标的特点,设计了一个火电厂多代理控制系统(PPMACS).在PP MACS中,前馈控制代理(FFCAs)采用神经模糊系统进行决策,反馈控制代理(FBCAs)采用基于遗传算法的模糊系统进行决策.优化任务分解代理(OTDAs)通过一个优化代理和一个分解代理来进行多目标优化分解PPMACS的任务.协调代理根据运行条件协调PPMACS的各个代理.仿真结果显示了火电厂多代理控制系统能够实现火电单元机组的多目标运行和大范围负荷跟踪.神经网络、模糊逻辑和遗传算法是PPMACS中的智能代理进行决策的有效工具.

关键词：决策反馈控制前馈控制模糊逻辑遗传算法多代理控制系统神经网络

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Evolution in the formation of graphene nanocapsules from coal tar pitch

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International Journal of Coal Science & Technology 2020年第4期7卷 816-824页

作者： D.M.Puente-Siller A.E.Garcia-Castillo J.A.Lopez-Corpus A.Perea-garduno Department of Research and Development Altos Hornos de MexicoS.A.B.de C.V.Prolongacion JuarezS/NLa Loma.25770 Monclova.CoahuilaMexico

It has recently been reported that coal tar pitch(CTP)can be utilised as raw material for the production of graphene nanocapsules(GNCs)because it is formed by a great quantity of aromatic organic compounds(which promote the rearrangement of double bonds by a process of polymerisation).Due to the importance of graphene and the search for a non-expensive methodology to produce it,this work used CTP to synthesise GNCs using an in situ activation technique at low temperatures and evaluating the effect of the working temperature on the formation of such *** other words,analysing the form of the particle as the temperature rises from 600 to 900℃.As result of the experimentation,powders were obtained and analysed by the techniques of X-Ray Diffraction,Raman Spectroscopy and Microscopy,employing Field Fmission Scanning Electron Microscopy by normal mode as well as by Scanning Transmission Electron Microscopy and a High-Resolution Scanning Electron *** results show that working with temperatures between 800 and 850℃promotes the production of GNCs,considering that their size reduces as the working temperature rises.

关键词： Synthesis Nanocapsule Graphene Tar Agglomeration

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SARS-CoV-2:Air pollution highly correlated to the increase in *** case of Guadalajara,Jalisco,Mexico

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Infectious Disease Modelling 2023年第2期8卷 445-457页

作者： Elizabeth Torres-Anguiano Itzel Sanchez-Lopez Angeles garduno-Robles jorge David Rivas-Carrillo Edgar Alfonso Rivera-Leon Sergio Sanchez-Enríquez Luis Fernando Ornelas-Hernandez Fernando Zazueta Leon-Quintero Eduardo Narciso Salazar Leon-Quintero Guillermo Enrique Juarez-Lopez Fernando Antonio Sanchez-Zubieta Mariana Ochoa-Bru Abraham Zepeda-Moreno Onkogenetik/Mexicana de Investigacion y Biotectogía S.A.de C.V GuadalajaraJaliscoMexico Unidad de Biología Molecular Investigacion y DiagnosticoHospital San JavierGuadalajaraJaliscoMexico Departamento de Fisiología Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Departamento de Biología Molecular y Genomica Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Departamento de Clínicas Centro Universitario de los AltosUniversidad de GuadalajaraTepatitlan de MorelosJaliscoMexico Departamento de Clínicas Medicas Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajaraJaliscoMexico Servicio de Hemato-Oncología Pediatrica Hospital Civil de Guadalajara“Dr.Juan I.Menchaca”GuadalajaraJaliscoMexico Hospital Civil de Guadalajara“Fray Antonio Alcalde” GuadalajaraJaliscoMexico

Objectives:To determine whether air pollution or changes in SARS-CoV-2 lineages lead to an increase in ***:Descriptive statistics were used to calculate rates of infection(2020-2021).RT ePCR was used to compare viral loads from October 2020 to February *** sequencing(NGS)(n=92)was used to examine and phylogenetically map SARS-CoV-2 lineages.A correlative“air pollution/temperature”index(I)was developed using regression ***_(2.5),PM_(10),O_(3),NO_(2),SO_(2),and CO concentrations were analyzed and compared to the ***:The mortality rate during the last year was~32%.Relative SARS-CoV-2 viral loads increased in December 2020 and January *** revealed that approximately 80%of SARS-CoV-2 linages were B.1.243(33.7%),B1.1.222(11.2%),B.1.1(9%),B.1(7%),B.1.1.159(7%),and B.1.2(7%).Two periods were analyzed,the prehigh-and high-mortality periods and no significant lineage differences or new lineages were *** correlations of air pollution/temperature index values with mortality were found for IPM_(2.5) and IPM_(10).INO_(2).ISO_(2),and ICO but not for O_(3).Using ICO,we developed a model to predict mortality with an estimated variation of~±5 deaths per day.

关键词： Air pollution COVID-19 Guadalajara Mexico SARS-CoV-2 SARS-CoV-2 lineages

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Two novel mutations in theGAN gene causing giant axonal neuropathy

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World Journal of Pediatrics 2018年第3期14卷 298-304页

作者： Monica Irad Normendez-Martínez Lucero Monterde-Cruz Roberto Martínez Magdalena Marquez-Harper Nayelli Esquitin-garduno Margarita Valdes-Flores Leonora Casas-Avila Valeria Ponce de Leon-Suarez Viktor Javier Romero-Díaz Alberto Hidalgo-Bravo Medical Specialties Hospital Boulevard Milenio 130San Carlos la Roncha37660 LeonGuanajuatoMexico Department of Gene tics National Institute of R ehabilitationAvenue Mexico-Xochimilco 28914389 Me xico CityMexico Department ofHis tology School ofMedicineAutonomous University oft heS tate ofN uevo LeonMonterreyMexico

Background Giant axonal neuropathy (GAN) is a rare neurodegenerative disease transmitted in an autosomal recessive mode. This disorder presents motor and sensitive symptoms with an onset in early childhood. Progressive neurodegeneration makes the patients wheelchair dependent by the end of the second decade of life. Affected individuals do not survive beyond the third decade of life. Molecular analysis has identified mutations in the gene GAN in patients with this disorder. This gene produces a protein called gigaxonin which is presumably involved in protein degradation via the ubiquitin-proteasome system. However, the underlying molecular mechanism is not clearly understood yet. Methods Here we present the fi rst patient from Mexico with clinical data suggesting GAN. Sequencing of the GAN gene was carried out. Changes in the nucleotide sequence were investigated for their possible impact on protein function and structure using the publicly available prediction tools PolyPhen-2 and PANTHER. Results The patient is a compound heterozygous carrying two novel mutations in the GAN gene. The sequence analy-sis revealed two missense mutations in the Kelch repeats domain. In one allele, a C>T transition was found in exon 9 at the nucleotide position 55393 (g.55393C>T). In the other allele, a transversion G>T in exon 11 at the nucleotide position 67471 (g.67471G>T) was observed. Both of the bioinformatic tools predicted that these amino acid substitutions would have a negative impact on gigaxonin's function. Conclusion This work provides useful information for health professionals and expands the spectrum of disease-causing mutations in the GAN gene and it is the first documented case in Mexican population.

关键词： GAN Genetics Giant axonal neuropathy Incapacity Neurodegenerative

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Depreciation factor equation to evaluate the economic losses from ground failure due to subsidence related to groundwater withdrawal

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Natural Science 2014年第3期6卷 108-113页

作者： Víctor Manuel Hernández-Madrigal Jesús Arturo Muniz-Jáuregui Víctor Hugo garduno-Monroy Netzahualcoyotl Flores-Lázaro Sócrates Figueroa-Miranda Instituto de Investigaciones en Ciencias de La Tierra Universidad Michoacana de San Nicolás de HidalgoMoreliaMéxico Universidad Nacional Autónoma de México MoreliaMéxico

Subsidence due to groundwater withdrawal is a complex hydrogeological process affecting numerous cities settled on top of fluviolacustrine deposits. The discrete spatial variation in the thickness of these deposits, in combination with subsidence due to groundwater withdrawal, generates differential settlements and aseismic ground failure (AGF) characterized by a welldefined scarp. In cities, such AGF causes severe damages to urban infrastructure and considerable economic impact. With the goal of arriving to a general criterion for evaluating the economic losses derived from AGF, in the present work we propose the following equation: ELi = PVi*DFi. Where PVi is the value of a property “i”, and DFi is a depreciation factor caused by structural damages of a property “i” due to AGF. The DFi is calculated empirically through: . This last equation is based on the spatial relations of coexistence and proximity of property polygons and the AGF axis. The coexistence is valued as the quotient of the affectation area divided by the total area of the involved property;and the proximity to the AGF axis is expressed as the inverse of the perpendicular distance from the centroid of the property polygon to the AGF axis. The sum of these terms is divided by two to determine the percentage that affects the property value (PVi). These equations are relevant because it is the first indicator designed for the discrete assessment of the economic impacts due to AGF, and can be applied to real estate infrastructure from either urban or rural areas.

关键词： Aseismic Ground Failure Groundwater Withdrawal Related Subsidence Equation Depreciation Economic Losses

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