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Thematische Bibliographien / Himalayan toad

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Auswahl der wissenschaftlichen Literatur zum Thema „Himalayan toad“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Himalayan toad"

1

Hofmann, Sylvia, Heiner Kuhl, Chitra Bahadur Baniya und Matthias Stöck. „Multi-Tissue Transcriptomes Yield Information on High-Altitude Adaptation and Sex-Determination in Scutiger cf. sikimmensis“. Genes 10, Nr. 11 (31.10.2019): 873. http://dx.doi.org/10.3390/genes10110873.

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The Himalayas are one of earth’s hotspots of biodiversity. Among its many cryptic and undiscovered organisms, including vertebrates, this complex high-mountain ecosystem is expected to harbour many species with adaptations to life in high altitudes. However, modern evolutionary genomic studies in Himalayan vertebrates are still at the beginning. Moreover, in organisms, like most amphibians with relatively high DNA content, whole genome sequencing remains bioinformatically challenging and no complete nuclear genomes are available for Himalayan amphibians. Here, we present the first well-annotated multi-tissue transcriptome of a Greater Himalayan species, the lazy toad Scutiger cf. sikimmensis (Anura: Megophryidae). Applying Illumina NextSeq 500 RNAseq to six tissues, we obtained 41.32 Gb of sequences, assembled to ~111,000 unigenes, translating into 54362 known genes as annotated in seven functional databases. We tested 19 genes, known to play roles in anuran and reptile adaptation to high elevations, and potentially detected diversifying selection for two (TGS1, SENP5) in Scutiger. Of a list of 37 genes, we also identify 27 candidate genes for sex determination or sexual development, all of which providing the first such data for this non-model megophryid species. These transcriptomes will serve as a valuable resource for further studies on amphibian evolution in the Greater Himalaya as a biodiversity hotspot.

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Banerjee, Krishnendu, Deb Shankha Goswami und Abhijit Das. „Edema in a Himalayan Toad, Duttaphrynus himalayanus (Günther 1864) (Anura: Bufonidae)“. Reptiles & Amphibians 27, Nr. 2 (18.07.2020): 209–10. http://dx.doi.org/10.17161/randa.v27i2.14178.

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3

Liao, Jiahong, Min Tang, Liqing Peng, Lichun Jiang, Zhangqiang You und Wei Chen. „The complete mitochondrial genome sequence of Himalayan toad Duttaphrynus himalayanus (Anura: Bufonidae)“. Mitochondrial DNA Part B 5, Nr. 1 (02.01.2020): 740–41. http://dx.doi.org/10.1080/23802359.2020.1715287.

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4

V, Jithin, Sanul Kumar und Abhijit Das. „First record of interspecific amplexus between a Himalayan Toad, Duttaphrynus himalayanus (Bufonidae), and a Himalayan Paa Frog, Nanorana vicina (Dicroglossidae), from the Western Himalaya, India“. Reptiles & Amphibians 28, Nr. 2 (15.07.2021): 270–73. http://dx.doi.org/10.17161/randa.v28i2.15579.

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5

Hofmann, Sylvia, Rafaqat Masroor und Daniel Jablonski. „Genetic variation and tadpoles of the westernmost Himalayan lazy toad Scutiger occidentalis“. Zoologischer Anzeiger 294 (September 2021): 205–9. http://dx.doi.org/10.1016/j.jcz.2021.08.008.

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6

Gurung, Yuvraj. „Exploring Antigenic Properties and Immune Responses in Bufo himalayanus: Implications for Conservation and Biodiversity Protection“. UTTAR PRADESH JOURNAL OF ZOOLOGY 44, Nr. 23 (09.12.2023): 430–38. http://dx.doi.org/10.56557/upjoz/2023/v44i233917.

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Background: The objective of the study is to investigate antigenic property of soluble antigens of Nematodes Cosmocercoides dukae isolated from infected Bufo himalayanus (Class Amphibia, order: Anura) and to investigate the nature of protective immune response in laboratory rats. Bufo himalayanus is a species found in the districts of Darjeeling, Sikkim and adjoining hills of the sub-Himalayan belt, at an altitude of 6000 ft. above the sea level and known to be heavily infested by natural gut dwelling nematode infections. The present study is a small step towards protection and conservation of this amphibian species. Results: study of morphology of the nematode parasite confirmed it to be Cosmocercoides dukae. A crude whole body homogenate (antigenic protein) of the parasite was injected in healthy non-infected rats, spleen histo-architecture of treated rats differed from control rats. Humoral immune response assay by Gel Diffusion Precipitin (GDP) Test revealed that the parasite antigen invoked very little to no response. Study of the crude nematode antigenic protein extract concentration was 6.09 mg/ml and protein profile assay by SDS-PAGE showed seven major and several minor bands. Discussion: Though humoral immune response assay of parasite in experimental rats evoked very little or no immune response, this would not mean absence of antibodies, rather the antibody titers were presumably very low. It is to be noted that spleen of treated rats showed a distinctive histological feature. GDP test with infected toad serum also showed negative result. But protein profile assay of antigenic protein by SDS-PAGE showed many bands of proteins, which could be isolated and tested for further characterization. Conclusion: In order to maintain the Himalayan biodiversity, this amphibian species needs protection from such natural infective nematode parasites. If we are able to focus any light to this area, this knowledge might help the future research workers to plan for the protection of this species.

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Darevsky, Ilya S., Notker Helfenberger, Nikolai L. Orlov und Karan Shah. „Two New Species of the Genus Gonydactylus (Sauria: Gekkonidae) from Eastern Nepal“. Russian Journal of Herpetology 4, Nr. 2 (15.10.2011): 89–93. http://dx.doi.org/10.30906/1026-2296-1997-4-2-89-93.

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Two new species of the naked-toed geckos of the genus Gonydactylus are described from Eastern Nepal. A comparison of the described species with another “himalayan” Gonydactylus (G. khasiensis and occurring in the west of Nepal G. himalayanus) is given.

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8

Rai, Tapil. „Necrophilia in Himalayan Toads, Duttaphrynus himalayanus (Günther 1864), from Eastern Nepal“. Reptiles & Amphibians 29, Nr. 1 (20.04.2022): 277–78. http://dx.doi.org/10.17161/randa.v29i1.17040.

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9

AGARWAL, ISHAN, AKSHAY KHANDEKAR und AARON M. BAUER. „A new bent-toed gecko (Squamata: Gekkonidae: Cyrtodactylus) from the Western Himalayas, Himachal Pradesh, India“. Zootaxa 4446, Nr. 4 (19.07.2018): 442. http://dx.doi.org/10.11646/zootaxa.4446.4.2.

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We describe a new species of the gekkonid genus Cyrtodactylus based on a series of six specimens from the Chamba Valley in the Western Himalayas, Himachal Pradesh state, India. Cyrtodactylus chamba sp. nov. is a member of the subgenus Siwaligekko and can be diagnosed from congeners in the Western Himalayas by a combination of its small size (snout to vent length up to 63 mm), a continuous series of five precloacal pores on males, 13–15 rows of dorsal tubercles, 33–43 scales across the belly, no regular series of enlarged subcaudals, and a dorsal colour pattern of 5–7 irregular, broad, dark bands with much narrower, light interspaces. The new species is 14% divergent in ND2 sequence from the most similar sampled congener, Cyrtodactylus (Siwaligekko) himalayanus from Jammu and Kashmir, and is 0.5–1.1% divergent in nuclear sequence data from sampled Siwaligekko species. Many more undiscovered Cyrtodactylus species probably exist across the Himalayas at elevations below ~2000 m; basic field surveys for reptiles and other poorly known groups and examination of existing material should be a priority if we are to appreciate the true diversity of this spectacular mountainous landscape.

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Mirza, Zeeshan A., Harshal S. Bhosale, Tejas Thackeray, Pushlar Phansalkar, Mandar Sawant, Gaurang G. Gowande und Harshil Patel. „A new species of bent-toed geckos of the genus Cyrtodactylus Gray, 1827 from western Arunachal Pradesh, India“. Herpetozoa 35 (21.03.2022): 65–76. http://dx.doi.org/10.3897/herpetozoa.35.e80610.

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A new species of bent-toed geckos of the genus Cyrtodactylus is described from western Arunachal Pradesh. The new species is a member of the Indo-Burma clade and is embedded within the “peguensis” group, a relationship deduced contingent on a partial fragment of mitochondrial NADH subunit 2 gene. Cyrtodactylus kamengensissp. nov. is morphologically similar to C. himalayicus from which it differs in bearing a distinct ventrolateral fold and 6–8 basal lamellae on digit IV of pes. Genetically, the new species is sister to the Indian lineage of the “peguensis” group containing C. bhupathyi and C. gubernatoris. The Indian lineage of the “peguensis” group diverged from its Burmese relatives during the mid-Oligocene likely followed by the beginning of the Himalayan uplift, highlighting the role of the Himalayas in the diversification of biota.

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Mehr Quellen

Dissertationen zum Thema "Himalayan toad"

1

Mukhopadhyay, Shekhar. „Gonadal differenciation and spermatogenetic activity in Himalayan toad, bufo Himalayans Gunther : Anura :Amphibia - Ultrastructural study“. Thesis, University of North Bengal, 2002. http://hdl.handle.net/123456789/931.

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Mohadjer, Solmaz [Verfasser], und Todd [Akademischer Betreuer] Ehlers. „Investigating spatial and temporal patterns of deformation and erosion in orogens : Insights from the Himalaya-Tibet Orogen and the European Alps / Solmaz Mohadjer ; Betreuer: Todd Ehlers“. Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1201644178/34.

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Mohadjer, Solmaz Verfasser], und Todd [Akademischer Betreuer] [Ehlers. „Investigating spatial and temporal patterns of deformation and erosion in orogens : Insights from the Himalaya-Tibet Orogen and the European Alps / Solmaz Mohadjer ; Betreuer: Todd Ehlers“. Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1201644178/34.

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Bücher zum Thema "Himalayan toad"

1

Earth into gold: Himalayan foothill folktales told by Umila Devi Sood. New York: Oxford University Press, 1997.

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2

Mulmi, Amish Raj. All Roads Lead North. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780197645994.001.0001.

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During the June 2020 territorial dispute over Kalapani, India blamed tensions on a newly assertive Nepal’s deepening relations with China. But beyond the accusations and grandstanding, this reflects a new reality: the power equations in South Asia have been redrawn, to make space for China. Nepal did not turn northwards overnight. Its ties with China have deep historical roots built on Buddhism, dating to the early first millennium. While India’s unofficial 2015 blockade provided momentum to the rift with Delhi, Nepal has long wanted deeper ties with Beijing, to counteract India’s oppressive intimacy. With China’s growing South Asian and global ambitions, Nepal now has a new primary bilateral partner--and Nepalis are forging a path towards modernity with its help, both in the remote borderlands and in the cities. All Roads Lead North offers a long view of Nepal’s foreign relations, today underpinned by China’s world-power status. Sharing never-before-told stories about Tibetan guerrilla fighters, failed coup leaders and trans-Himalayan traders, Nepal analyst Amish Raj Mulmi examines the histories binding mountain communities together across the Sino-Nepali border. Part history, part journalistic account, Mulmi's is a complex, compelling and rigorously researched study of a small country caught between two neighbourhood giants.

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3

Miguel Ángel Bustos en el filo de todo. Teseo, 2018. http://dx.doi.org/10.55778/ts877788464.

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<p>“<i>Toda visión es una puerta </i>infinitas<i> veces repetida</i>” es la cita con que cerramos la puerta de este libro; hasta aquí nuestra visión de la obra de Miguel Ángel Bustos (1932-1976). Además de haber sido una de las víctimas mortales de la última dictadura militar, fundamentalmente fue poeta de primera agua, y lo sigue siendo. Su talla queda en claro al haber sido ensalzado por sus pares coetáneos, como nada menos que Juan Gelman, y también, por algunos contemporáneos algo mayores y de autoridad rotunda: Aldo Pellegrini, Leopoldo Marechal y Julio Cortázar.</p><p>Nuestro trabajo recorre minuciosamente sus cinco libros publicados, considera la producción plástica que contienen para completar la textualidad verbal y recurre a la apoyatura de algunas de sus prosas, reunidas por Emiliano Bustos en 2007. De este corpus nos detuvimos en especial en <i>El Himalaya o la moral de los pájaros</i> (1970), por su rica complejidad y por su lugar posiblemente único en la literatura argentina. Su discursividad, entre barroca y surrealista, entre hermética y diáfana, está siempre abriéndose a nuevas esferas. En verdad, al sopesar la obra édita completa hallamos que el descentramiento es un programa perceptivo, cognoscitivo y, posiblemente, de acción en el mundo. Por eso elegimos para integrar el título un sintagma que lo subraya, presente ya en el ingreso a <i>Cuatro murales</i>, donde afirma: “<i>sólo puedo proceder plantándome justo en el filo de todo”.</i></p>

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