Relevant bibliographies by topics / Chamaeleon

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Chamaeleon'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Chamaeleon"

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SEABRA, SOFIA G., INÊS SATAR, and OCTÁVIO S. PAULO. "Microsatellite loci isolated from Chamaeleo chamaeleon." Journal of Genetics 94, S1 (2015): 144–47. http://dx.doi.org/10.1007/s12041-014-0463-z.

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Fouda, Yosra A., Dalia A. Sabry, and Dalia F. Abou-Zaid. "Functional Anatomical, Histological and Ultrastructural Studies of three Chameleon Species: Chamaeleo Chamaeleon, Chamaeleo Africanus, and Chamaeleon Vulgaris." International Journal of Morphology 33, no. 3 (2015): 1045–53. http://dx.doi.org/10.4067/s0717-95022015000300038.

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Dimaki, Maria, Anna Hundsdörfer, and Uwe Fritz. "Eastern Mediterranean chameleons (Chamaeleo chamaeleon, Ch. africanus) are distinct." Amphibia-Reptilia 29, no. 4 (2008): 535–40. http://dx.doi.org/10.1163/156853808786230415.

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AbstractBased on mitochondrial 16S rRNA sequences, we suggest that the founder individuals of the introduced Greek population of Chamaeleo africanus originated in the Nile Delta region of Egypt. In Ch. chamaeleon, we discovered in the eastern Mediterranean new 16S rRNA haplotypes, being highly distinct from previously published western Mediterranean haplotypes. Eastern Mediterranean haplotypes were found in samples from northern Syria, Cyprus, Crete, Samos, Malta and Tunisia. The occurrence of an eastern Mediterranean haplotype in Tunisia and of distinct haplotypes in Morocco could argue for a phylogeographic break in northwestern Africa.
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Eshar, David, Roi Lapid, and Valerie Head. "Transilluminated Jugular Blood Sampling in the Common Chameleon (Chamaeleo chamaeleon)." Journal of Herpetological Medicine and Surgery 28, no. 1 (2018): 19. http://dx.doi.org/10.5818/17-10-127.1.

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CUADRADO, MARIANO, JOSÉ MARTÍN, and PILAR LÓPEZ. "Camouflage and escape decisions in the common chameleon Chamaeleo chamaeleon." Biological Journal of the Linnean Society 72, no. 4 (2001): 547–54. http://dx.doi.org/10.1111/j.1095-8312.2001.tb01337.x.

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Sidhom, Marwa, Khaled Said, Noureddine Chatti, et al. "Karyological and bioinformatic data on the common chameleon Chamaeleo chamaeleon." Data in Brief 30 (June 2020): 105640. http://dx.doi.org/10.1016/j.dib.2020.105640.

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Hartigan, Patrick. "New T Tauri stars in Chamaeleon I and Chamaeleon II." Astronomical Journal 105 (April 1993): 1511. http://dx.doi.org/10.1086/116530.

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Baran, İbrahim, Max Kasparek, and Mehmet Öz. "On the occurrence and status of the Chameleon,Chamaeleo chamaeleon, in Turkey." Zoology in the Middle East 2, no. 1 (1988): 52–56. http://dx.doi.org/10.1080/09397140.1988.10637558.

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Cuadrado, Mariano. "Mate guarding and social mating system in male common chameleons (Chamaeleo chamaeleon)." Journal of Zoology 255, no. 4 (2006): 425–35. http://dx.doi.org/10.1017/s0952836901001510.

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Díaz-Paniagua, Carmen. "Effect of cold temperature on the length of incubation of Chamaeleo chamaeleon." Amphibia-Reptilia 28, no. 3 (2007): 387–92. http://dx.doi.org/10.1163/156853807781374782.

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AbstractCommon chameleon eggs spend the first months of incubation at low temperatures. I incubated eggs of different clutches at 25°C in four treatments with respectively 0, 84, 119 and 149 days of initial cold period (at 14°C). Treatments with longer cold periods had longer total incubation but shorter periods of incubation at 25°C. Eggs which did not experience initial cold period showed low synchronization at hatching. Hatchling body mass and length were influenced by the length of the cold period. Hatchlings were largest and heaviest for cold periods of intermediate length which had similar duration than the cold period experienced by eggs in nature. These results suggest that the cold torpor period of Common chameleon embryos contributes to optimization of development and growth, and synchronizes hatching.
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Dissertations / Theses on the topic "Chamaeleon"

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Manara, C. F., L. Testi, G. J. Herczeg, et al. "X-shooter study of accretion in Chamaeleon I." EDP SCIENCES S A, 2017. http://hdl.handle.net/10150/625828.

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The dependence of the mass accretion rate on the stellar properties is a key constraint for star formation and disk evolution studies. Here we present a study of a sample of stars in the Chamaeleon I star-forming region carried out using spectra taken with the ESO VLT/X-shooter spectrograph. The sample is nearly complete down to stellar masses (M-star) similar to 0.1 M-circle dot for the young stars still harboring a disk in this region. We derive the stellar and accretion parameters using a self-consistent method to fit the broadband flux-calibrated medium resolution spectrum. The correlation between accretion luminosity to stellar luminosity, and of mass accretion rate to stellar mass in the logarithmic plane yields slopes of 1.9 +/- 0.1 and 2.3 +/- 0.3, respectively. These slopes and the accretion rates are consistent with previous results in various star-forming regions and with different theoretical frameworks. However, we find that a broken power-law fit, with a steeper slope for stellar luminosity lower than similar to 0.45 L-circle dot and for stellar masses lower than similar to 0.3 M-circle dot is slightly preferred according to different statistical tests, but the single power-law model is not excluded. The steeper relation for lower mass stars can be interpreted as a faster evolution in the past for accretion in disks around these objects, or as different accretion regimes in different stellar mass ranges. Finally, we find two regions on the mass accretion versus stellar mass plane that are empty of objects: one region at high mass accretion rates and low stellar masses, which is related to the steeper dependence of the two parameters we derived. The second region is located just above the observational limits imposed by chromospheric emission, at M-star similar to 0.3-0.4 M-circle dot. These are typical masses where photoevaporation is known to be effective. The mass accretion rates of this region are similar to 10(-10) M-circle dot/yr, which is compatible with the value expected for photoevaporation to rapidly dissipate the inner disk.
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Long, Feng, Gregory J. Herczeg, Ilaria Pascucci, et al. "An ALMA Survey of CO Isotopologue Emission from Protoplanetary Disks in Chamaeleon I." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/625159.

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The mass of a protoplanetary disk limits the formation and future growth of any planet. Masses of protoplanetary disks are usually calculated from measurements of the dust continuum emission by assuming an interstellar gas-to-dust ratio. To investigate the utility of CO as an alternate probe of disk mass, we use ALMA to survey (CO)-C-13 and (CO)-O-18 J = 3-2 line emission from a sample of 93 protoplanetary disks around stars and brown dwarfs with masses from 0.03 to 2 M-circle dot in the nearby Chamaeleon I star-forming region. We detect (CO)-C-13 emission from 17 sources and (CO)-O-18 from only one source. Gas masses for disks are then estimated by comparing the CO line luminosities to results from published disk models that include CO freeze-out and isotope-selective photodissociation. Under the assumption of a typical interstellar medium CO-to-H-2 ratio of 10(-4), the resulting gas masses are implausibly low, with an average gas mass of similar to 0.05M(Jup) as inferred from the average flux of stacked (CO)-C-13 lines. The low gas masses and gas-to-dust ratios for Cha I disks are both consistent with similar results from disks in the Lupus star-forming region. The faint CO line emission may instead be explained if disks have much higher gas masses, but freeze-out of CO or complex C-bearing molecules is underestimated in disk models. The conversion of CO flux to CO gas mass also suffers from uncertainties in disk structures, which could affect gas temperatures. CO emission lines will only be a good tracer of the disk mass when models for C and CO depletion are confirmed to be accurate.
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Barbosa, Wagner Jose Corradi. "O meio interestelar local na direção das nuvens escuras Saco de Carvão e Chamaeleon-Musca." Universidade Federal de Minas Gerais, 1998. http://hdl.handle.net/1843/BUOS-9GHRAV.

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Recent investigations of the colour excess distribution towards the geometric center of the Chamaeleon-Musca dark clouds complex and the Southern Coalsack dark cloud have suggested that, although being apart by more than 15, these clouds might be physically associated. In order to sustain such hypothesis a new photometric programme has been carried out to trace the extinction between the features. We used the Str¨omgren Automatic Telescope at the European Southern Observatory (ESO), in La Silla (Chile), to obtain uvby_ photometry for all stars, earlier than G0 in the catalog of the Smithsonian Astronomical Observatory, covering the area defined by the Galactic coordinates 308 l 294 and 20 b 5. The programme has resulted on very precise uvby_ data for 1017 stars. Analysis of the colour excess E(by) vs. distance diagrams for these stars has indicated the presence of a local low absorption volume limited at 150 ?30 pc from the Sun by an extended interstellar dust sheet-like structure, that is followed by a region where almost no additional reddening is measured for another 350 pc. The existence of such absorbing feature, at a distance identical to the molecular clouds, has suggested that Coalsack, Chamaeleon and Musca might be dense condensations embbeded in the diffuse medium composing the feature. Furthermore, the minimum column density of the absorbing structure seemed to increase with the Galactic latitude, but without clear dependence on the Galactic longitude. Such effect suggested either an inhomogeneous sheet-like structure, that could be perpendicular to the Galactic plane, or a sheet-like structure of same minimum column density, curved away from the Sun. When viewed in connection to the other data on the local ISM, the existence of these two low-reddening volumes has led to the idea that the dust sheet could be part of a large scale structure, probably related to the interface of the Local and Loop I Bubbles. To investigate the local interstellar medium (ISM) components towards the Southern Coalsack and Chamaeleon-Musca dark clouds we have used the 1.4m Coud´e Auxiliary Telescope at ESO to obtain high-resolution (R 60 000) spectra of the interstellar NaI D absorption lines towards 64 B-type stars (d 500 pc) selected to cover these clouds. The radial velocities, column densities, velocity dispersions, colour excess and distances to the stars have been used to understand the kinematics and distribution of the interstellar cloud components. The analysis indicates that the interstellar gas is distributed in two extended sheet-like structures permeating the whole area, one at d 60 pc and another, that corresponds to the dust sheet observed photometrically, around 120-150 pc from the Sun. The nearby feature is approaching the Sun with average radial velocity of -7 kms1, has low average column density logNNa i 11.2 cm2 and is subject to supersonic turbulent motion as indicated by the velocity dispersion b 5 kms1. The more distant feature has column densities between 12.3 logNNa i 13.2 cm2, average velocity dispersion b 2.5 kms1. Its velocity is centered around 0 kms1, but there is a trend for increasing from -3 kms1 near b = 1 to 3 kms1 near b = 18. The nearby low column density feature indicates a general outflow from the Sco-Cen association, in aggreement with several independent lines of data in the general searched direction. From the radial velocities point of view, the component around 120 150 pc has column densities that suggest neutral gas associated to the dust sheet-like feature observed towards the studied clouds. The fact that the velocities observed in this work (4 km s1 VLSR +3 km s1) are also observed in adjacent directions, supposedly related to the interface of the Local and Loop I bubbles, suggest that Coalsack, Chamaeleon and Musca seem to be part of such interaction zone.<br>Investigações recentes da distribuição dos excessos de cor na direção do centro geométrico do complexo de nuvens Chamaeleon-Musca e da nuvem escura Saco de Carvão sugeriram que, apesar de estarem separadas por mais de 15o no céu, estas nuvens poderiam estar fisicamente associadas. Para se comprovar tal hipótese um novo programa fotométrico foi realizado, utilizando-se o telescópio dinamarquês de 50 cm instalado no European Southern Observatory (ESO), em La Silla (Chile). Foram selecionadas todas as estrelas dos tipos espectrais anteriores a G0 do catálogo do Smithsonian Astronomical Observatory (SAO) cobrindo a área definida pelas coordenadas Galácticas: 294o  l 307o, 20o  b 5o, que contém as nuvens em questão. Este novo programa resultou em um total de 1017 estrelas com dados uvby de excelente qualidade. A análise dos vários diagramas de excesso de cor E(b-y) por distncia indica que existe um volume local de baixa densidade, limitado por uma extensa estrutura de poeira interestelar que dista cerca de 150 ±30 pc do Sol, e é seguida por uma segunda região onde pouco avermelhamento é detectado por 350 pc. A presença dessa estrutura de poeira interestelar, à mesma distncia das nuvens estudadas, sugere que as nuvens Saco de Carvão, Chamaeleon e Musca (SCCM) podem ser regiões de maior densidade embebidas em uma estrutura de grande escala, provavelmente relacionada com a interface entre as Bolhas Local e Loop I. Além disso a distribuição do avermelhamento indica que o excesso de cor mínimo E(b-y)min, causado pela estrutura de poeira, apesar de não apresentar uma dependência com a longitude Galáctica, parece aumentar com a latitude Galáctica. Tal aumento sugere que a lâmina pode não ser homogênea, estando quase que perpendicular ao plano Galáctico, ou que a lâmina tem uma mesma coluna de densidade mínima, mas está curvada na direção oposta ao Sol. Para se investigar a cinemática das componentes do meio interestelar local na direção das nuvens SCCM, foi realizado um programa espectroscópico, visando a obtenção de espectros de alta resolução (R ~ 60 000) das linhas de absorção interestelar do doubleto de sódio neutro. Utilizando-se o telescópio CAT (Coudé Auxiliary Telescope) de 1.4m, também instalado no ESO, foram observadas 64 estrelas do tipo espectral B localizadas até 500 pc do Sol, e cujos valores de excesso de cor e distância foram precisamente determinados na investigação fotométrica acima. A análise das componentes do gás interestelar na direção das nuvens SCCM indica que o material está distribuído em duas estruturas tipo-lâmina, que se estendem por toda a área estudada. Uma delas está situada a distâncias menores do que 60 pc, enquanto a outra, correspondendo à lâmina de poeira observada fotometricamente, está localizada em torno de 120 a 150 pc do Sol. A componente mais próxima tem baixa coluna de densidade (log NNa ~ H11.2 cm-1 ), está se aproximando do Sol, em relação ao padrão local de repouso (LSR), a uma velocidade média VLSR~ 7 km s-1, e está sujeita a movimentos supersônicos turbulentos, como indicado pelo paraocirc;metro de dispersão de velocidades b ~ 5 km s-1. Já a estrutura mais distante tem coluna de densidade entre 12.3 log NNa  13.2 cm-2 e tem menor dispersão de velocidades b ~ 2.5 km s-1. A sua velocidade está centrada em torno de 0 km s-1, em relação ao LSR, mas existe uma tendência de aumento desde -3 km s-1 em torno do plano Galáctico para +3 km s-1 pr´oximo à latitude Galáctica b = -18o. A estrutura de menor coluna de densidade é consistente com outras observações de um fluxo de matéria vindo da direção da associação Sco-Cen. Do ponto de vista das velocidades radiais, a componente densa em torno de 120 - 150 pc tem coluna de densidade que sugere gás neutro associado com a lâmina de poeira observada na direção das nuvens SCCM. O fato de que as velocidades observadas neste trabalho (-4 km s-1  VLSR +3 km s-1) são também observadas em direções adjacentes, supostamente relacionadas com a interface entre as bolhas Local e Loop I, sugere que a lâmina densa de poeira e gás também faz parte da zona de interação entre as bolhas.
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Matos, Sónia Maria Gomes. "Biologia e plantas hospedeiras de uma nova espécie galícola de eucaliptos em Portugal - Ophelimus SP." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8285.

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Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia<br>In 2013, a new Ophelimus sp. was detected in a Eucalyptus arboretum in Lisbon. This study aims to study the bio-ecological characteristics of Ophelimus sp. as basic knowledge for its management. We further compare it with the previous introduced species Ophelimus maskelli. Our results showed morphological differences on the galls and adults of O. maskelli and Ophelimus sp., and on the host species. Eucalyptus globulus and E. viminalis were the most susceptible species to Ophelimus sp., whereas it was confirmed a preference of O. maskelli for E. camaldulensis, E. rudis and E. tereticornis. Intraspecific differences regarding gall size and infestation levels of Ophelimus sp. within E. globulus were further registered. Ophelimus sp. has one generation per year and about 30% of larvae and pre-adult mortality was registered due to unknown factors. These traits will contribute to a slower growth rate of its populations when compared to those of O. maskelli. In the North of Portugal, Ophelimus sp. seems to be better adapted, as indicated by the higher population levels compared to those observed in the South. From our surveys, we did not find galls with Closterocerus chamaeleon or any other parasitoid that could allow for the biocontrol of Ophelimus sp.
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Laslie, Kathryn C. "Investigations of Biotremors in the Veiled Chameleon (Chamaeleo calyptratus)." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/3067.

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While substrate-borne vibrations are utilized by different reptile species, true conspecific communication via biotremors has not yet been demonstrated in reptiles. This study follows a preliminary report that the veiled chameleon (Chamaeleo calyptratus) could produce biotremors in communicative contexts. I tested chameleon behavioral sensitivity to vibrations by placing them on a dowel attached to a shaker emitting vibrations of 25, 50, 150, 300, and 600 Hz and then measured their changes in velocity before and after the stimulus. I then paired chameleons in various social contexts [anthropogenic disturbance (human disruption of animal); dominance (malemale; female-female C. calyptratus); courtship (male-female C. calyptratus); heterospecific (C. calyptratus + C. gracilis); and predator-prey (adult + juvenile C. calyptratus)] and used a video camera and accelerometers to record their behavior. This study demonstrates that chameleons produce biotremors and that receivers exhibit a freeze response when exposed to a simulated biotremor stimulus. Furthermore, veiled chameleons produce biotremors in anthropogenic disturbance, conspecific dominance and courtship contexts, and these biotremors are elicited by visual contact with another adult conspecific and heterospecifics. Overall, two classes of biotremor were identified, "hoots” and “rumbles,” which differ significantly in dominant frequency and waveform. No correlation was identified between animal size and dominant frequency of the biotremors they produced as biotremors originate from rapid muscle contractions. Juvenile chameleons of two months of age are able to produce biotremors, suggesting this behavior may have multiple functions. Overall, the data suggest that the veiled chameleon has the potential to utilize substrate-borne vibrational communication during conspecific and possibly heterospecific interactions.
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Tegge, Samuel. "The Mechanism of Biotremor Production in the Veiled Chameleon (Chamaeleo calyptratus)." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2336.

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Vibratory communication has evolved in numerous animal groups, including insects, spiders, fishes, mammals, and was recently discovered in veiled chameleons (Chamaeleo calyptratus). I examined the mechanism by which C. calyptratus produce these biotremors. Muscle activity data were gathered during simulated anti-predator responses via electromyography (EMG) with simultaneous recordings of biotremor production using an accelerometer. I correlated EMG data with the accelerometer data to implicate the muscles responsible for the production of the biotremors. Mixed-effect linear regression models described the mechanism, and a model selection framework determined which model fit the data best. I then used an analysis of variance to partition the variance to each variable to determine which muscles were most important in the biotremor producing mechanism. The Mm. sternohyoideus superficialis et profundus, Mm. mandibulohyoideus, and M. levator scapulae were active during the production of biotremors. Mean latency calculations revealed that the M. levator scapulae and Mm. mandibulohyoideus activated prior to the vibration onset, and the Mm. sternohyoideus superficialis et profundus activated after the vibration onset. The M. sternohyoideus superficialis then ceased activity prior to vibration cessation, and the M. sternohyoideus profundus, Mm. mandibulohyoideus, and M. levator scapulae ceased activity after the vibration had ended. The description of the biotremor producing mechanism further supports that C. calyptratus can produce biotremors, possibly for communication.
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Melero, Jurado Adrián. "Anatomical description of the coelomic cavity organs using radiography, ultrasonography and computed tomography in healthy veiled chameleons (Chamaeleo calyptratus) and panther chameleons (Furcifer pardalis)|Descripción anatómica de los órganos de la cavidad celómica mediante radiografía, ecografía y tomografía computerizada en camaleones velados (Chamaeleo calyptratus) y camaleones pantera (Furcifer pardalis) sanos." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670673.

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El camaleó vetllat (Chamaeleo calyptratus) i el camaleó pantera (Furcifer pardalis) són dues de les espècies de camaleó més populars al món, i en conseqüència, dues de les que més freqüentment s’atenen a les consultes veterinàries. Les diferents tècniques de diagnòstic per imatge solen incloure’s de forma rutinària als protocols diagnòstics en medicina herpetològica com són la radiografia, la ecografia, la tomografia computeritzada y la ressonància magnètica. Tot i així, els estudis publicats sobre descripció anatòmica mitjançant tècniques d’imatge són escassos, i la interpretació d’aquestes últimes es basa en l’experiència pròpia del clínic o bé per extrapolació d’altres espècies prèviament estudiades. Per aquest motiu, els objectius d’aquest estudi anatòmic prospectiu van ser desenvolupar protocols de diagnòstic per imatge en aquestes espècies i descriure l’anatomia dels òrgans de la cavitat celòmica en animals sans, mitjançant l’ús de la radiografia, l’ecografia i la tomografia computeritzada. Es van incloure disset camaleons vetllats (7 mascles i 10 femelles) i quinze camaleons pantera (13 mascles i 2 femelles) sans en base als resultats de l’examen físic general i de l’estudi corològic. L’estudi es va realitzar en camaleons sedats mitjançant l’administració d’alfaxalona (Alfaxan®, Crawley, UK) 4-6 mg/kg IV a la vena ventral de la cua. Un cop sedats, es va realitzar un estudi radiogràfic amb dues projeccions (lateral dreta i dorsoventral) amb xassís de mamografia. Seguidament, es va realitzar un estudi ecogràfic complet de la cavitat celòmica amb l’ús de sonda lineal de 15 a 18-MHz en decúbit lateral dret. Finalment, es va realitzar una tomografia computeritzada helicoidal amb un escàner de 16 talls en decúbit esternal. Es va realitzar l’estudi postmortem d’un exemplar de cada espècie per tal d’aclarir, il·lustrar i avaluar les troballes de les proves d’imatge. Els resultats obtinguts suggereixen que les diferents tècniques d’imatge estudiades permeten la visualització del fetge (incloent la vena cava caudal i las venes hepàtiques), la vesícula biliar, l’estómac, els intestins, les gònades, els cossos grassos i els ronyons en camaleons vetllats i pantera. La bufeta de la orina només es va identificar mitjançant ecografia i tomografia. La melsa, el pàncrees i les glàndules adrenals van ser identificades als estudis postmortem però no van poder visualitzar-se mitjançant cap tècnica d’imatge. En conclusió, aquest estudi proporciona una guia de les característiques anatòmiques normals dels òrgans celòmics mitjançant tècniques de diagnòstic per imatge en camaleons vetllats i camaleons pantera. D’aquesta manera, les troballes poden ser utilitzades com a referència durant els exàmens de pacients malalts o per a futurs estudis d’investigació.<br>El camaleón velado (Chamaeleo calyptratus) y el camaleón pantera (Furcifer pardalis) son dos de las especies de camaleón más populares en el mundo, y en consecuencia, dos de las que más frecuentemente se atienden en la consulta veterinaria. Las diferentes técnicas de diagnóstico por imagen suelen incluirse de forma rutinaria en los protocolos diagnósticos en medicina herpetológica, entre ellas la radiografía, la ecografía, la tomografía computerizada y la resonancia magnética. Sin embargo, los estudios publicados sobre descripción anatómica mediante técnicas de imagen son escasos, y la interpretación de estas últimas se basa en la experiencia propia del clínico o bien por extrapolación de otras especies ya estudiadas. Por este motivo, los objetivos de este estudio anatómico prospectivo fueron desarrollar protocolos de diagnóstico por imagen en estas especies y describir la anatomía de los órganos de la cavidad celómica en animales sanos, mediante el uso de radiografía, ecografía y tomografía computerizada. Se incluyeron diecisiete camaleones velados (7 machos y 10 hembras) y quince camaleones pantera (13 machos y 2 hembras) sanos en base a los resultados del examen físico general y del estudio coprológico. El estudio se realizó en camaleones sedados tras la administración de alfaxalona (Alfaxan®, Crawley, UK) 4-6 mg/kg IV en la vena ventral de la cola. Una vez sedados, se realizó un estudio radiográfico con dos proyecciones (lateral derecha y dorsoventral) con chasis de mamografía. Seguidamente, se realizó un estudio ecográfico completo de la cavidad celómica mediante sonda lineal de 15 a 18-MHz en decúbito lateral derecho. Finalmente, se realizó una tomografía computerizada helicoidal con un scanner de 16 cortes en decúbito esternal. Se realizó el estudio post mortem de un ejemplar de cada especie por tal de esclarecer, ilustrar y evaluar los hallazgos de imagen. Los resultados obtenidos sugieren que las diferentes técnicas de imagen estudiadas permiten la visualización del hígado (incluyendo la vena cava caudal y las venas hepáticas), la vesícula biliar, el estómago, los intestinos, las gónadas, los cuerpos grasos y los riñones en camaleones velados y pantera. La vejiga de la orina solo pudo identificarse mediante ecografía y tomografía. El bazo, el páncreas y las glándulas adrenales fueron identificados en los estudios post mortem pero no pudieron ser visualizados mediante ninguna de las técnicas de imagen. En conclusión, este estudio proporciona una guía de las características anatómicas normales de los órganos celómicos mediante técnicas de diagnóstico por imagen en camaleones velados y camaleones pantera. De esta forma, los hallazgos pueden ser utilizados como referencia para exámenes de pacientes enfermos o para futuros estudios de investigación.<br>Veiled chameleon (Chamaeleo calyptratus) and Panther chameleon (Furcifer pardalis) are the most popular chameleons over the world, and consequently, two of the most frequently species attended in veterinary practice. The most commonly used imaging techniques in diagnostic protocols in herpetology include radiography, ultrasonography (US), computed tomography (CT) and magnetic resonance imaging (MRI). However, few studies about imaging description in reptiles have been published. The objectives of this prospective anatomic study were to develop imaging techniques for these species and to describe the normal anatomy of the coelomic organs using radiography, US and CT scan. Seventeen healthy veiled chameleons (7 males and 10 females) and fifteen healthy panther chameleons (13 males and 2 females) were included in the study. Animals were considered to be healthy on the basis of the results of a complete physical examination and coprology testing. The imaging study was performed in sedated chameleons after the administration of alfaxalone (Alfaxan®, Crawley, UK) 4-6 mg/kg IV in the ventral vein of the tail. A right lateral and dorsoventral radiographic views were performed with a mammography cassette plate in all animals. Then, an ultrasound was performed in right lateral recumbency using a linear 15 to 18-MHz transducer. Finally, a CT examination was performed with a 16-slice helical CT scanner in sternal recumbency. Post-mortem study of one chameleon of each species were used to clarify and illustrate coelomic anatomy and to assess imaging findings. The results of the current study suggest that the different imaging techniques (radiography, ultrasonography and computed tomography) allow the visualization of the liver (including caudal vena cava and hepatic veins), gallbladder, stomach, intestines, gonads, fat bodies and kidneys in healthy veiled and panther chameleons. The urinary bladder was identified using US and CT examination. The spleen, pancreas and adrenal glands were identified in post-mortem studies, but could not be visualized with any imaging technique. In conclusion, this study provides a guide of the normal imaging anatomic features of the coelomic organs in veiled chameleons and panther chameleons. Findings can be used as a reference for future research studies or for examinations of clinically ill patients.
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Weinmann, Nadine. "Übertragung eines Iridovirus aus einem Helmchamäleon (Chamaeleo hoehnelii) auf Grillen der Spezies Gryllus bimaculatus und Versuch zur Infektion von Bartagamen (Pogona vitticeps) mit Iridovirus-infizierten Grillen." Giessen : VVB Laufersweiler, 2007. http://d-nb.info/98800724X/04.

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Weinmann, Nadine [Verfasser]. "Übertragung eines Iridovirus aus einem Helmchamäleon (Chamaeleo hoehnelii) auf Grillen der Spezies Gryllus bimaculatus und Versuch zur Infektion von Bartagamen (Pogona vitticeps) mit Iridovirus-infizierten Grillen / eingereicht von Nadine Weinmann." Giessen : VVB Laufersweiler, 2008. http://d-nb.info/988769107/34.

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Amaro, Diogo Gil Durão Duarte Nunes. "Vale a pena devolver à Natureza animais reabilitados? O caso do camaleão-comum (Chamaeleo chamaeleon) num centro de recuperação no Algarve (RIAS)." Master's thesis, 2017. http://hdl.handle.net/10451/30856.

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Tese de mestrado em Biologia da Conservação, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2017<br>O objectivo dos centros de recuperação de animais selvagens é tratar e devolver à Natureza animais feridos, doentes ou órfãos. Contudo, geralmente não se sabe o que acontece aos animais recuperados após a devolução ao seu habitat natural. Esta situação torna-se particularmente problemática quando se trata de espécies ameaçadas ou sobre as quais se desconhece os seus movimentos e requisitos ambientais. O camaleão-comum ( Chamaeleo chamaeleon ) é um réptil que, em Portugal, se distribui exclusivamente pelo litoral algarvio, onde as suas populações têm vindo a sofrer com o aumento da urbanização e do turismo. O RIAS é o único centro de recuperação de animais selvagens no Algarve, recebendo por ano uma média de 30 indivíduos desta espécie. Apesar de o camaleão-comum ser uma espécie emblemática desta região e de existirem vários estudos sobre a sua biologia, ainda permanecem desconhecidos alguns dados referentes à sua área vital e capacidade de dispersão. De forma a compreender o estado da população local, bem como quais os habitats preferenciais, realizou-se previamente um censo de camaleão-comum na área de estudo – a Quinta de Marim, Olhão. Os movimentos de 9 camaleões foram monitorizados com recurso a telemetria, 3 residentes e 6 recuperados no RIAS. Observou-se que camaleões residentes têm preferência por zonas de transição entre sapal e ambiente terrestre, enquanto que os indivíduos introduzidos percorreram vários habitats dentro da Quinta de Marim. Os camaleões introduzidos apresentaram áreas vitais muito superiores às dos residentes, o que corresponde a comportamentos anteriormente observados aquando da introdução de outras espécies em zonas desconhecidas. Apesar das movimentações algo erráticas, os camaleões libertados nunca abandonaram a área de estudo, o que poderá indicar que o procedimento de devolução à Natureza de camaleão-comum no RIAS é executado com sucesso.<br>The main objective of wildlife rehabilitation centers is to heal and then release back to Nature wounded, ill or orphan wild animals. However, in most cases it is not known what happens to rehabilitated animals when returned to their natural habitats. This is a particularly problematic situation when it concerns endangered species or when there is little information about its movements and environmental requirements. The common chameleon ( Chamaeleo chamaeleon ) is a reptile which, in Portugal, is distributed exclusively along the Algarve coast, where its populations have been impacted with the increasing urbanization and tourism in this region. RIAS is the only wildlife rehabilitation center in Algarve and the main common chameleon receiver, with an average of 30 admissions per year. Even though the common chameleon is an emblematic species of this region and several studies regarding its biology had already been done, there is little information about its vital areas and dispersion capacity. In order to understand the status of the local population, as well as which are the preferred habitats, a common chameleon census was conducted in the study area – Quinta de Marim, Olhão. The movements of 9 chameleons were monitored using telemetry: 3 residents and 6 recovered at RIAS. Resident chameleons have a preference for transition zones between marshland and terrestrial habitats, while introduced individuals wandered through several habitats within Quinta de Marim. Introduced chameleons presented vital areas far superior to the resident ones, which corresponds to behaviors previously observed when introducing other species in unknown areas. Despite the somewhat erratic movements, the released chameleons never left the study area, which may indicate that RIAS’ reintroduction procedure of common chameleon is executed successfully.
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Books on the topic "Chamaeleon"

1

Praxiphanes and Chamaeleon of Heraclea Pontica, eds. Praxiphanes of Mytilene and Chamaeleon of Heraclea: Text, translation, and discussion. Transaction Publishers, 2012.

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Wolfgang, Böhme, ed. Phylogeny and classification of the Chamaeleonidae (Sauria) with special reference to hemipenis morphology. Zoologisches Forschungsinstitut und Museum Alexander Koenig, 1986.

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Clarke, Julia, and Autumn Reed. Chamaeleon: Book Four of the Stardust Series. Independently Published, 2016.

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Clarke, Julia, and Autumn Reed. Chamaeleon: Book 3.5 of The Stardust Series. Independently published, 2017.

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Martano, Andrea. Praxiphanes of Mytilene and Chamaeleon of Heraclea: Text, Translation, and Discussion. Taylor & Francis Group, 2017.

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Matelli, Elisabetta, Andrea Martano, and David Mirhady. Praxiphanes of Mytilene and Chamaeleon of Heraclea: Text, Translation, and Discussion. Transaction Publishers, 2012.

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United States. National Aeronautics and Space Administration., ed. Soft X-ray observations of pre-main sequence stars in the Chamaeleon dark cloud. Pennsylvania State University, Office of Sponsored Programs, 1988.

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United States. National Aeronautics and Space Administration., ed. Soft X-ray observations of pre-main sequence stars in the Chamaeleon dark cloud. Pennsylvania State University, Office of Sponsored Programs, 1988.

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United States. National Aeronautics and Space Administration., ed. Pre-main sequence stars in the chamaeleon cloud and pre-main sequence stars in the Rho Ophiuchi cloud core: Final technical report for NASA grant NAG 5-1678. National Aeronautics and Space Administration, 1993.

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United States. National Aeronautics and Space Administration., ed. Pre-main sequence stars in the chamaeleon cloud and pre-main sequence stars in the Rho Ophiuchi cloud core: Final technical report for NASA grant NAG 5-1678. National Aeronautics and Space Administration, 1993.

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Book chapters on the topic "Chamaeleon"

1

Henning, Th, and E. Thamm. "Cold Dust Around Chamaeleon Stars." In Planetary Systems: Formation, Evolution, and Detection. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1154-6_23.

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Persi, P., E. Copet, and A. A. Kaas. "DENIS and ISOCAM Observations of Chamaeleon I Cloud." In The Impact of Near-Infrared Sky Surveys on Galactic and Extragalactic Astronomy. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5026-2_21.

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Liljeström, T. "The HH 49/50 Outflow Source in Chamaeleon I." In Astrophysics and Space Science Library. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1924-5_18.

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Gledhill, T. M., A. Chrysostomou, and J. H. Hough. "Linear and Circular Imaging Polarimetry of the Chamaeleon Infrared Nebula." In The Role of Dust in the Formation of Stars. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-540-68594-4_8.

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Whittet, D. C. B., J. H. Hough, J. A. Bailey, M. F. Rouse, and T. M. Kirrane. "The Wavelength of Maximum Polarization in the Chamaeleon Dark Cloud." In Light on Dark Matter. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4672-9_42.

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Prusti, Timo, and Sacha Hony. "The Low-Mass End of the IMF in Chamaeleon I." In The Initial Mass Function 50 Years Later. Springer Netherlands, 2005. http://dx.doi.org/10.1007/978-1-4020-3407-7_19.

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Persi, Paolo. "A Deep Survey with ISOCAM of the Chamaeleon I Dark Cloud." In ISO Surveys of a Dusty Universe. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45553-1_41.

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Nguyen, Duy Cuong, Ray Jayawardhana, Marten van Kerkwijk, Alexis Brandeker, and Aleks Scholz. "A Search for Disk-Locking in the Chamaeleon I Star Forming Region." In Precision Spectroscopy in Astrophysics. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75485-5_77.

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Casanova, S., E. Feigelson, T. Montmerle, and J. Guibert. "ROSAT X-ray Study of the Stellar Population of the Chamaeleon I Dark Cloud." In Physics of Solar and Stellar Coronae: G.S. Vaiana Memorial Symposium. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1964-1_45.

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Cambresy, L. "A Study of Extinction and Star Formation in the Chamaeleon I Cloud with DENIS." In The Impact of Near-Infrared Sky Surveys on Galactic and Extragalactic Astronomy. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5026-2_20.

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Conference papers on the topic "Chamaeleon"

1

Kreft, Sven, Wadim Lorenz, Jan Berssenbru¨gge, Ju¨rgen Gausemeier, and Ansgar Tra¨chtler. "A VR-Based Prototyping and Demonstration Platform Integrating a Fully Active X-by-Wire Test Vehicle." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28732.

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Interconnected basic vehicle functions, such as braking, steering and driving, have great potential to improve vehicle safety and comfort. In order to design and test the necessary control functions, a fully active X-by-wire test vehicle (“Chamaeleon”) has been developed. However, while demonstrating the vehicle’s capabilities with real test drives is of high risk, a driving simulator that integrates the entire vehicle provides safe conditions for interactive demonstration test drives — even for untrained drivers. In this paper, we introduce a driving simulator that is composed of Virtual Reality-based simulation software and the Chamaeleon test vehicle. This provides a prototyping and demonstration platform for integrated vehicle-dynamics control functions. Therefore, we enhanced an existing driving simulator. Moreover, we realized control functions in order to utilize the Chamaeleon’s active suspension to provide a motion platform with three degrees-of-freedom. The driving simulator has proven well as a demonstration platform during two international industry fairs. Here, the main goal was, to interactively illustrate the unconventional steering strategies as well as dedicated functionalities of the Chamaeleon. Although the achieved motion feedback is not very realistic, the presence of motion was very welcomed by fair attendees, who performed a simulated test drive. Additionally, first tests have shown that the driving simulator can be used as a prototyping platform. Here, complex control functions can be tested on actual vehicle hardware, while driving in a secured synthetic environment. This enables engineers to instantly perceive the impacts of the control algorithms on the behavior of the vehicle. This facilitates the development process.
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Iyer, Venkatraman, Matthias Woehrle, and Koen Langendoen. "Chamaeleon — Exploiting multiple channels to mitigate interference." In 2010 Seventh International Conference on Networked Sensing Systems (INSS). IEEE, 2010. http://dx.doi.org/10.1109/inss.2010.5573516.

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Nguyen, Duy Cuong, Alexis Brandeker, Ray Jayawardhana, Marten H. van Kerkwijk, Alexander Scholz, and Eric Stempels. "Multiplicity in Star Formation: Close Binaries in Chamaeleon I and Taurus-Auriga." In COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun. AIP, 2009. http://dx.doi.org/10.1063/1.3099249.

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Hayashi, Katsuhiro. "Fermi-LAT $\gamma$-ray study of the Chamaeleon molecular cloud complex using thermal dust optical depth obtained with Planck." In 7th International Fermi Symposium. Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.312.0142.

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Momose, Munetake, Masaaki Hiramatsu, Takashi Tsukagoshi та ін. "Wide-field Imaging Survey of Dust Continuum Emissions at λ = 1.1 mm toward the Chamaeleon and Lupus Regions with AzTEC on ASTE". У EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY: Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3215822.

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Caleca, V., M. C. Rizzo, G. Lo Verde, et al. "Diffusione di Closterocerus chamaeleon (Girault) introdotto in Sicilia, Sardegna e Calabria per il controllo biologico di Ophelimus maskelli (Ashmead) (Hymenoptera, Eulophidae), galligeno esotico sugli eucalipti." In Terzo Congresso Nazionale di Selvicoltura. Accademia Italiana di Scienze Forestali, 2009. http://dx.doi.org/10.4129/cns2008.088.

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Singh, A., S. S. K. Lee, M. Butler, and V. Lubecke. "Activity monitoring and motion classification of the lizard Chamaeleo jacksonii using multiple Doppler radars." In 2012 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2012. http://dx.doi.org/10.1109/embc.2012.6346973.

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"Composition of sex chromosomes of veiled chameleon (Chamaeleo calyptratus, Iguania, Squamata) reveals new insights into sex chromosome evolution of iguanian lizards." In Bioinformatics of Genome Regulation and Structure/Systems Biology (BGRS/SB-2022) :. Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, 2022. http://dx.doi.org/10.18699/sbb-2022-097.

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