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Journal articles on the topic 'Ptyxis'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Wurdack, Kenneth J., and William Farfan-Rios. "Incadendron : a new genus of Euphorbiaceae tribe Hippomaneae from the sub-Andean cordilleras of Ecuador and Peru." PhytoKeys 85 (August 31, 2017): 69–86. https://doi.org/10.3897/phytokeys.85.14757.

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Incadendron esseri K.Wurdack & Farfan, gen. & sp. nov., from the wet sub-Andean cordilleras of Ecuador (Cordillera del Cóndor) and Peru (Cusco, Oxapampa) is described and illustrated. This recently discovered large canopy tree with a narrow elevational range presents an unusual combination of rare morphological characters in Hippomaneae including mucilage-secreting sheathing stipules, conduplicate ptyxis, and large, woody fruits. The broader significance of these characters in Hippomaneae is discussed. The morphology and anatomy of Incadendron were investigated, highlighting its fruit

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2

HAYNES, JODY L. "Critical review of “Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus” published in PhytoKeys 208: 1–102 (2022)." Phytotaxa 612, no. 2 (2023): 159–200. http://dx.doi.org/10.11646/phytotaxa.612.2.4.

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The recent publication of a monograph on Ceratozamia promised greater taxonomic understanding in the genus. Instead, the plethora of inaccuracies and inconsistencies therein undermined taxonomic cohesiveness. This review critically evaluates the Ceratozamia monograph of Martínez-Domínguez et al. (2022), systematically correcting the inaccuracies and clarifying the inconsistencies therein. Notably, the proposed lectotypification of C. mirandae is invalidated, the proposed specific status of C. osbornei is questioned, the proposed synonymy of C. dominguezii under C. subroseophylla is rejected, t

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3

Milner, Jean-Claude. "Mallarmé selon Saussure." Recherches sémiotiques 34, no. 1-2-3 (2016): 297–312. http://dx.doi.org/10.7202/1037158ar.

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Le mot ptyx se lit chez Mallarmé dans un poème publié en 1887. Pour en établir la signification, il faut réexaminer de près la distinction saussurienne entre signifié et chose signifiée. Quant au signifiant, il dépend de la linguistique indo-européenne, dans la version qu’en avait donnée Franz Bopp. Mallarmé l’a pratiquée ; on en a la preuve par Les Mots anglais. L’article tente de montrer que la séquence /ptyks/ permet d’obtenir par permutations et modifications l’intégralité de l’ossature consonantique de tous les mots indo-européens possibles. Le ptyx est donc le Mot par excellence, sauf qu

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4

Girard, Jean-Yves, and Dag Normann. "Embeddability of ptykes." Journal of Symbolic Logic 57, no. 2 (1992): 659–76. http://dx.doi.org/10.2307/2275298.

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The notion of a ptyx (plural, ptykes) is obtained by generalising the ordinals On and the dilators Dil introduced by Girard [1] into a typed hierarchy. The notion is due to Girard, and a detailed treatment will appear in Girard [2].In this Introduction we will give a summary of the theory of ptykes. It will be an advantage to be familiar with the theory of dilators as introduced in Girard [1] or as presented in Girard and Normann [3].The class On of ordinals is organised into a category ON by using strictly increasing maps f: x → y as morphisms. A dilator will be a functor F: ON → ON commuting

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5

Vennemann, Theo. "The Relative Chronology of the High Germanic Consonant Shift and the West Germanic Anaptyxis." Diachronica 8, no. 1 (1991): 45–57. http://dx.doi.org/10.1075/dia.8.1.04ven.

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SUMMARY This paper studies systematic relationships between two sound changes, the High Germanic Consonant Shift and the West Germanic Anaptyxis. Since the High Germanic languages, i.e., High German and Lombardic, are a division of the West Germanic Sprachbund, it might be thought — and this is indeed the general view — that the more extensive West Germanic change necessarily antedates the more limited High Germanic change. But an examination of the relative chronology of the two changes in one of the languages that underwent both of them, Old High German, shows that, on the contrary, the syst

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6

DUBOIS, ALAIN, and PATRICK DAVID. "The nomenclatural status of Zaocys carinatus Günther, 1864 (Squamata, Serpentes)." Bionomina 19, no. 1 (2020): 110–15. http://dx.doi.org/10.11646/bionomina.19.1.7.

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The nomen ‘Ptyas carinata (Günther, 1858)’, applied since 1864 to a large colubrid snake species of the Oriental region first reported from Borneo, is shown to be in fact an invalid junior objective synonym of Ptyas dhumnades (Cantor, 1842), a species of the same genus inhabiting China, Laos and Vietnam. In order to preserve the use of the well-known combination Ptyas carinata for the former species, Article 23.9 on reversal of precedence is used to validate Zaocys carinata Günther, 1864 against its senior secondary homonym Coryphodon carinatus Günther, 1858.

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7

Meetei, Asem Bipin, Sunandan Das, Patrick D. Campbell, Sujoy Raha, and Probhat Bag. "A study on Ptyas doriae (Boulenger, 1888) with comments on the status of Ptyas hamptoni (Boulenger, 1900) (Squamata: Colubridae: Colubrinae)." Zootaxa 4457, no. 4 (2018): 537–48. https://doi.org/10.11646/zootaxa.4457.4.3.

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Meetei, Asem Bipin, Das, Sunandan, Campbell, Patrick D., Raha, Sujoy, Bag, Probhat (2018): A study on Ptyas doriae (Boulenger, 1888) with comments on the status of Ptyas hamptoni (Boulenger, 1900) (Squamata: Colubridae: Colubrinae). Zootaxa 4457 (4): 537-548, DOI: 10.11646/zootaxa.4457.4.3

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8

S. Kechris, Alexander. "Boundedness theorems for dilators and ptykes." Annals of Pure and Applied Logic 52, no. 1-2 (1991): 79–92. http://dx.doi.org/10.1016/0168-0072(91)90040-s.

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9

Catlow, J. R. G. "A proof-theoretical analysis of ptykes." Archive for Mathematical Logic 33, no. 1 (1994): 57–79. http://dx.doi.org/10.1007/bf01275470.

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10

Päppinghaus, Peter. "Ptykes in GödelsT und Definierbarkeit von Ordinalzahlen." Archive for Mathematical Logic 28, no. 2 (1989): 119–41. http://dx.doi.org/10.1007/bf01633986.

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11

Setti, Príncia Grejo, Tariq Ezaz, Geize Aparecida Deon, et al. "Evolution of ZW Sex Chromosomes in Ptyas Snakes (Reptilia, Colubridae): New Insights from a Molecular Cytogenetic Perspective." International Journal of Molecular Sciences 26, no. 10 (2025): 4540. https://doi.org/10.3390/ijms26104540.

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Snakes are cytogenetically dynamic, characterized by largely conserved diploid chromosome numbers although displaying varied variable evolutionary stages of their sex chromosomes. This study examined four snakes, with a special focus on the genus Ptyas, to provide evolutionary insights into the evolution of ZW sex chromosomes. We performed an extensive karyotype characterization using conventional and molecular cytogenetic approaches, described for the first time the karyotype of Ptyas korros, and revisited the karyotype descriptions of P. mucosa, Chrysopelea ornata, and Fowlea flavipunctatus.

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12

MEETEI, ASEM BIPIN, SUNANDAN DAS, PATRICK D. CAMPBELL, SUJOY RAHA, and PROBHAT BAG. "A study on Ptyas doriae (Boulenger, 1888) with comments on the status of Ptyas hamptoni (Boulenger, 1900) (Squamata: Colubridae: Colubrinae)." Zootaxa 4457, no. 4 (2018): 537. http://dx.doi.org/10.11646/zootaxa.4457.4.3.

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Ptyas doriae is a rare snake in northeastern India, Myanmar and southern China. The original description and subsequent accounts of this species were all very brief. We studied most of the available specimens of this species and on this basis we provide a detailed redescription of the species. We give an account of intrapopulational variation in scalation characters and colouration and we also report on a previously undescribed colour morph from Manipur, India. We have examined the holotype of Ptyas hamptoni and found that characters used to distinguish it from P. doriae are inadequate and the

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13

Fransiska, Eunike Melanda, Iwan Sahrial Hamid, Aditya Yudhana, Nusdianto Triakoso, Ratih Novita Praja, and Faisal Fikri. "Sparganosis pada Ular Jali (Ptyas korros)." Jurnal Medik Veteriner 3, no. 2 (2020): 258. http://dx.doi.org/10.20473/jmv.vol3.iss2.2020.258-262.

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Ular Ptyas korros atau ular jali merupakan salah jenis ular yang ada di Indonesia.. Berbagai penyebab kepunahan adalah salah satunya masalah kesehatan seperti penyakit yang disebabkan parasit. Laporan kasus ini bertujuan untuk mengidentifikasi cacing yang ditemukan pada ular P. korros yang telah mati, metode identifikasi menggunaka pewarnaan carmine dan diamati dibawah mikroskop dengan perbesaran 40x dan 100x. Hasil identifikasi ditemukan cacing pita Spirometra sp. sebanyak 18 ekor di daerah subkutan dan muskulus sepanjang tubuh ular. Cacing Spirometra sp. menyebabkan penyakit spargonosis yang

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14

Weiss, Merlin, and Yatin Kalki. "Trophic Niche Partitioning between Sympatric Naja naja and Ptyas mucosa: Crowdsourced Data in Application to Community Ecology." Journal of Herpetology 57, no. 1 (2023): 107–15. https://doi.org/10.1670/22-013.

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Weiss, Merlin, Kalki, Yatin (2023): Trophic Niche Partitioning between Sympatric Naja naja and Ptyas mucosa: Crowdsourced Data in Application to Community Ecology. Journal of Herpetology 57 (1): 107-115, DOI: 10.1670/22-013, URL: http://dx.doi.org/10.1670/22-013

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15

Kim, Tae-Won, Seo-Jin Jeong, and Hyeon Bin Lee. "Catalytic Activities of Pt-Y-Ni/C Synthesized Using Microwave-Polyol Process for Oxygen Reduction Reaction in PEMFC." ECS Meeting Abstracts MA2024-02, no. 41 (2024): 2657. https://doi.org/10.1149/ma2024-02412657mtgabs.

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Developing highly active and durable catalysts for sluggish cathodic oxygen reduction reaction (ORR) has been a core issue for the broad commercialization of proton exchange membrane fuel cells (PEMFCs) Despite Pt/C being used as a typical ORR catalyst in commercial PEMFC stacks, lots of efforts are being made to overcome the high loading and poor durability of Pt/C [1]. Recently, the notable results of Pt-based binary alloys with rare-earth metals or transition metals have been reported to demonstrate promising catalytic performance as an ORR catalyst [3, 4]. Nevertheless, further optimizatio

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16

Dela Cruz, Z., C. Hou, R. F. Martinez-Gazoni, R. J. Reeves та M. W. Allen. "Performance of in situ oxidized platinum/iridium alloy Schottky contacts on (001), ( 2¯01), and (010) β-Ga₂O₃". Applied Physics Letters 120, № 8 (2022): 083503. http://dx.doi.org/10.1063/5.0080652.

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The performance of β-Ga2O3 Schottky contacts (SCs) fabricated using amorphous, intentionally oxidized platinum–iridium alloys was investigated as a function of alloy composition and β-Ga2O3 crystal orientation. PtyIr(1−y)Ox SCs with Pt fractions of y = 0.8, 0.5, and 0.3 were deposited on (001), ([Formula: see text]), and (010) single-crystal β-Ga2O3 substrates via the reactive rf and dc co-sputtering of Pt and Ir targets using oxygen–argon plasmas. In each case, the PtyIr(1−y)Ox SCs were highly rectifying with current rectification ratios (at ±3 V) of 11/10/9 orders of magnitude (at 300 K) for

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17

Pranashinta, Garindra Tiara, Lucia Tri Suwanti, Setiawan Koesdarto, and Emmanuel Djoko Poetranto. "Spirometra in Ptyas mucosus Snake in Sidoarjo, Indonesia." KnE Life Sciences 3, no. 6 (2017): 34. http://dx.doi.org/10.18502/kls.v3i6.1104.

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Currently snake is not only limited as performing animals, medicine, food and raw materials factories but also as pets. One of the famous snakes found in Indonesia is Ptyas mucosus. Snake is a port of the various parasitic zoonoses and unzoonoses. In P. mucosus also frequently reported cases of occurrence sparganosis. Sparganosis is a parasitic infection caused by the larvae spirometra or called spargana. The aim of this reasearch to study of the morphology of Spirometra in P. Mucosus snake from snakes collector in Sidoarjo, East Java. Identification adult worm and larvae in wet prepararat usi

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18

Zhou, Bo, Changhong Ding, Yubao Duan, and Guo Hui. "The complete mitochondrial genome sequence of Ptyas mucosus." Mitochondrial DNA Part B 1, no. 1 (2016): 193–94. http://dx.doi.org/10.1080/23802359.2015.1137848.

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19

Chiu, K. W., V. C. K. Wong, M. Y. Chan, and P. K. T. Pang. "Blood pressure homeostasis in the snake, Ptyas korros." General and Comparative Endocrinology 64, no. 2 (1986): 300–304. http://dx.doi.org/10.1016/0016-6480(86)90017-1.

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20

Bagaskara, Ryan, Bambang Sektiari Lukiswanto, Adi Prijo Rahardjo, Emmanuel Djoko Poetranto, Setiawan Koesdarto, and Mufasirin Mufasirin. "Detection of Spargana on Ptyas korros in Sidoarjo." Jurnal Medik Veteriner 6, no. 3 (2023): 122–25. http://dx.doi.org/10.20473/jmv.vol6.iss3.2023.122-125.

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Ptyas korros or Indo-China Rat Snake is one of the snakes that are commonly hunted in Indonesia. This study aimed to identify Spirometra sp. on P. korros in Sidoarjo. A total of 18 snakes were collected within 3 months. Identification of Spirometra sp. was done using a native method, Semichen Acetic Carmine, and HE staining. As a results, 8 (44.4%) of 18 samples showed positive infection with Spirometra sp. The results of this study indicate the presence of spargana in P. korros in Sidoarjo and no adult Spirometra sp. was found.

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21

DAVID, PATRICK, JEAN LESCURE, JAY M. SAVAGE, et al. "Coluber korros Lesson, 1831 and Coluber korros Schlegel, 1837 (Reptilia: Squamata: Colubridae): there is a korros too many in the family." Zootaxa 5231, no. 3 (2023): 331–39. http://dx.doi.org/10.11646/zootaxa.5231.3.8.

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The purpose of this paper is to solve an overlooked nomenclatural problem involving two taxa of Colubridae, both described as Coluber korros. The first one is Coluber korros Schlegel, 1837, now Ptyas korros, a well-known and widespread species in south-east Asia. Its senior homonym is Coluber korros Lesson, 1831, a long forgotten taxon. Furthermore, these taxa are undoubtedly non-conspecific. We tentatively identify the holotype of this latter taxon as a large specimen of Coelognathus radiatus (F. Boie, 1827) and we specify its type locality as “Region of Kolkata, West Bengal State, eastern In

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22

Hanifa, Berry Fakhry, Muhammad Asmuni Hasyim, Bayu Agung Prahardika, and Nurul Whika Agustin. "Reptiles and Amphibian Diversity, Along with Potential Treat in Sumber Nyolo, Malang Regency." El-Hayah:Jurnal Biologi 8, no. 4 (2022): 130–35. http://dx.doi.org/10.18860/elha.v8i4.15799.

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Inventory of reptiles and amphibians was carried out in the Sumber Nyolo area, Karangploso District, Malang Regency, East Java. The sampling area is at an altitude of 600-650m above sea level. Pre-survey was conducted once. The survey was conducted from June-October 2020 using the visual encounter (VES) method. A total of 167 individuals from 17 species, 10 families have been recorded, 1 of which is in Near Threatened (NT) and Vulnerable (VU) status on the IUCN Redlist namely Ptyas korros and Huia masonii respectively, which H.masonii also endemic to Java Island. The diversity index (H’) shows

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23

Loehr, Joël. "L'Huître et le Ptyx." Littérature 157, no. 1 (2010): 17. http://dx.doi.org/10.3917/litt.157.0017.

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24

Mallick, Susanta, Asif Hossain, Gouranga Ghosh, and Srimanta Kumar Raut. "Bat Predation by the Indian Rat-snake Ptyas mucosa." Indian Forester 148, no. 10 (2022): 1073. http://dx.doi.org/10.36808/if/2022/v148i10/168686.

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25

Goyal, S. P. "Food habits of the common rat-snake Ptyas mucosus Linn." Journal of the Bombay Natural History Society 88 (June 12, 1991): 123. https://doi.org/10.5281/zenodo.13462648.

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26

Goyal, S. P. "Food habits of the common rat-snake Ptyas mucosus Linn." Journal of the Bombay Natural History Society 88 (June 7, 1991): 123. https://doi.org/10.5281/zenodo.13462648.

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27

Sawant, Priti, and Anuradha Rajagopalan. "Strange Behaviour in the Rat Snake Ptyas Mucosus, Family Colubridae." Journal of the Bombay Natural History Society 99 (June 7, 2002): 126. https://doi.org/10.5281/zenodo.13675909.

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28

Goyal, S. P. "Food habits of the common rat-snake Ptyas mucosus Linn." Journal of the Bombay Natural History Society 88 (July 3, 1991): 123. https://doi.org/10.5281/zenodo.13462648.

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29

Goyal, S. P. "Food habits of the common rat-snake Ptyas mucosus Linn." Journal of the Bombay Natural History Society 88 (July 10, 1991): 123. https://doi.org/10.5281/zenodo.13462648.

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30

Goyal, S. P. "Food habits of the common rat-snake Ptyas mucosus Linn." Journal of the Bombay Natural History Society 88 (July 17, 1991): 123. https://doi.org/10.5281/zenodo.13462648.

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31

Ong, Vinh AN, Ngoc THAO Hoang, Xuan QUANG Hoang, Thi TUYET Nguyen, and Anh TUAN Ho. "SURVEY RESULTS ON AMPHIBIANS AND REPTILES IN NAM DAN DISTRICT, NGHE AN PROVINCE, VIETNAM." Studia Universitatis Moldaviae Seria Stiințe ale naturii, no. 3(133) (July 21, 2020): 135–39. https://doi.org/10.5281/zenodo.3954013.

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A total number of 47 species of amphibians and reptiles were recorded during a recent field survey from Nam Dan district, Nghe An province (Vietnam). Including 13 amphibians species, 10 lizards species, 18 snakes species, and 6 turtles species. Among them, 10 species are rare, recorded in Vietnam Red Data Book (2007) and 5 species in IUCN Red List species (2019). Three species are recorded for the first time from Nghe An province: <em>Ptyas carinata, Naja kaouthia</em>, and <em>Pelodiscus variegatus</em>.

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32

Schulze, Joachim. "Mallarmés Ptyx und der „Sens Réel“." Poetica 27, no. 1-2 (1995): 113–48. http://dx.doi.org/10.30965/25890530-0270102005.

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33

Moudgil, Aman D., Ankur Sharma, Adarsh Kumar, Amit Singla, and Surender Bansal. "Amblyomma gervaisi (Ixodida: Ixodidae: Amblyomma) infestation in a Rat Snake from northwestern Himalayan region: a case study." Journal of Threatened Taxa 12, no. 15 (2020): 17165–67. http://dx.doi.org/10.11609/jott.4449.12.15.17165-17167.

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Along with a number of hosts, ticks are also capable of infesting snakes and transmitting rickettsiosis, anaplasmosis and ehrlichiosis. In the present study, ticks recovered from a Rat Snake Ptyas mucosa were collected and identified as Amblyomma gervaisi (previously known as Aponomma gervaisi). The case reports pertaining to observation of ticks (especially A. gervaisi) on reptile (snake) hosts are restricted to southern, eastern and western parts of India and the present study claims to be the first documented report of Amblyomma gervaisi ticks from Rat Snakes of northwestern Himalayan regio

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34

PAUWELS, OLIVIER S. G., ONG-ARJ LAOHAWAT, WIROT NAAKTAE, et al. "Reptile and Amphibian Diversity in Phang-nga Province, Southern Thailand." Tropical Natural History 2, no. 1 (2002): 25–30. https://doi.org/10.58837/tnh.2.1.102862.

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A list of the reptile and amphibian species recorded to date fromPhang-nga Province, southern Peninsular Thailand, is provided. Six speciesare here added to its fauna: Amyda cartilaginea, Typhlops muelleri, Ahaetullafasciolata, Oligodon purpurascens, Ptyas fusca and Maticora intestinalislineata. The list thus presently includes 39 Amphibian species (38 toads andfrogs, one caecilian) and 110 Reptile species (13 turtles, one crocodile, 36lizards, 60 snakes), and is by far the longest one currently established forany province in Thailand. Nevertheless, the number of species will undoubtedlystill

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35

Kothakota, Naga Jogayya, and I. Haque. "Development of microsatellite DNA markers for Indian Rat snake (Ptyas mucosa)." Forensic Science International: Animals and Environments 2 (December 2022): 100054. http://dx.doi.org/10.1016/j.fsiae.2022.100054.

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36

NG, T. B., H. M. LEE, CHRISTOPHER H. K. CHENG, and C. C. WONG. "Partial Purification of Prolactin-Like Substance from Snake(Ptyas Mucosa) Pituitaries." Endocrinologia Japonica 37, no. 6 (1990): 777–86. http://dx.doi.org/10.1507/endocrj1954.37.777.

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37

Zheng, Xiao-Xiao, Yu Du, Long-Hui Lin, and Chi-Xian Lin. "Development of microsatellite markers in the gray ratsnake Ptyas korros (Colubridae)." Conservation Genetics Resources 6, no. 2 (2014): 445–46. http://dx.doi.org/10.1007/s12686-013-0121-4.

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38

Tepper, Laura C., Ian B. Spiegel, and Garrett J. Davis. "Diagnosis of Erythema Multiforme Associated with Thymoma in a Dog and Treated with Thymectomy." Journal of the American Animal Hospital Association 47, no. 2 (2011): e19-e25. http://dx.doi.org/10.5326/jaaha-ms-5561.

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A 7 yr old Labrador retriever initially presented for severe halitosis, mild ptylism, and depigmentation of the nasal planum. Erythema multiforme was diagnosed based on clinical signs and dermatopathology. Treatment was initiated but the condition did not resolve. Six months later, the dog was diagnosed with a mediastinal mass. Trucut biopsy was performed and histopathologic diagnosis was consistent with a thymoma. A median sternotomy was performed, the thymoma was excised, and the dog recovered well. Four months postoperatively, there were no longer any obvious erythema multiforme lesions and

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39

Wang, Jiangang, Shiqing Wang, Song Huang, et al. "The genome assembly and annotation of the Oriental rat snake Ptyas mucosa." Gigabyte 2023 (September 20, 2023): 1–9. http://dx.doi.org/10.46471/gigabyte.92.

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The Oriental rat snake Ptyas mucosa is a common non-venomous snake of the colubrid family, spanning most of South and Southeast Asia. P. mucosa is widely bred for its uses in traditional medicine, scientific research, and handicrafts. Therefore, genome resources of P. mucosa could play an important role in the efficacy of traditional medicine and the analysis of the living environment of this species. Here, we present a highly continuous P. mucosa genome with a size of 1.74 Gb. Its scaffold N50 length is 9.57 Mb, and the maximal scaffold length is 78.3 Mb. Its CG content is 37.9%, and its gene

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40

Matveev, A. V., E. A. Egorova, A. E. Krasheninnikov, and E. I. Konyaeva. "Spontaneous Reporting Method Used for Safety Evaluation of Nonsteroidal Anti-Inflammatory Drugs and Paracetamol Products, Based on Assessment of Data from Periodic Reports." Safety and Risk of Pharmacotherapy 10, no. 1 (2022): 65–77. http://dx.doi.org/10.30895/2312-7821-2022-10-1-65-77.

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High rates of adverse drug reactions (ADRs) associated with nonsteroidal anti-inflammatory drugs (NSAIDs), as well as their irrational and uncontrolled use for self-medication require continuous updating of information on safety profiles of these products.The aim of the study was to assess the reporting rate, frequency, and severity of ADRs to NSAIDs and paracetamol products, based on data from periodic safety update reports (PSURs) submitted to the autonomous non-profit organisation “National Pharmacovigilance Research Centre”.Materials and methods: the study covered 104 PSURs for NSAIDs and

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Huang, Xin, Fengyuan Yan, and Jia He. "Pullout Behaviour of Snakeskin-Inspired Sustainable Geosynthetic Reinforcements in Sand: An Experimental Study." Sustainability 17, no. 14 (2025): 6502. https://doi.org/10.3390/su17146502.

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In recent years, there has been a growing interest in the frictional anisotropy of snake scale-inspired surfaces, especially its potential applications in enhancing the bearing capacity of foundations (piles, anchor elements, and suction caissons) and reducing materials consumption and installation energy. This study first investigated the frictional properties and surface morphologies of the ventral scales of Cantor’s rat snakes (Ptyas dhumnades). Based on the findings on the snake scales, a novel snakeskin-inspired geosynthetic reinforcement (SIGR) is developed using 3D-printed polylactic ac

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Lopez, T. J., L. R. Maxson, and H. G. Dowling. "Phylogenetic relationships of the African egg-eating snake Dasypeltis scabra." Amphibia-Reptilia 14, no. 3 (1993): 223–36. http://dx.doi.org/10.1163/156853893x00426.

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AbstractThe unusual morphological adaptations associated with specialization on a diet of eggs have been used as evidence to justify familial or subfamilial status for the egg-eating snakes, including the African genus Dasypeltis. We evaluate the phylogenetic relationships of Dasypeltis scabra by comparing albumin evolution in Dasypeltis and available representative colubrine taxa using the quantitative immunological technique of micro-complement fixation. We find that Dasypeltis scabra is included among a large colubrine assemblage containing racers (Coluber, Masticophis, Spalerosophis, and P

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Anita, S. Jadhav. "PHYLOGENETIC ANALYSIS OF SNAKE USING CYTOCHROME B GENE SEQUENCE." International Journal of Zoology and Applied Biosciences 6, no. 2 (2021): 104–9. https://doi.org/10.5281/zenodo.4905395.

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Phylogenetic analysis of two species of snake Eryxcolubrinus loveridgei and Ptyas mucosus was investigated using the gene encoding cytochrome b. The nucleotide sequences of complete and partial mtDNA cytochrome b were determined in numerous specimens. Sequence divergence between species and genera was evenly distributed in the cytochrome b gene but rather high compared to reports for other fish species. Phylogenetic analyses on complete cytochrome b were used to study the relationships among the considered species. The molecular phylogeny of sample was determined by analyzing cytochrome b gene

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Lin, Long-Hui, Fei Mao, Ce Chen, and Xiang Ji. "Reproductive traits of the gray ratsnake Ptyas korros from three geographically distinct populations." Current Zoology 58, no. 6 (2012): 820–27. http://dx.doi.org/10.1093/czoolo/58.6.820.

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Abstract We collected gravid gray rat snakes Ptyas korros from three geographically distinct populations in China, Chenzhou (CZ), Jiangshan (JS) and Dinghai (DH), to study geographical variation in female reproductive traits. Egg-laying dates differed among the three populations such that at the most northern latitude egg-laying was latest, and earliest at the most southern lati-tutde. Clutch size, clutch mass, egg mass, egg shape, within clutch variability in egg sizes and relative clutch mass differed among the three populations, whereas post-oviposition body mass did not. Except for egg-lay

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Ho, B. Y. M., V. C. K. Wong, and K. W. Chiu. "The mechanism of action of angiotensin II in the rat snake, Ptyas korros." General and Comparative Endocrinology 61, no. 3 (1986): 343–47. http://dx.doi.org/10.1016/0016-6480(86)90219-4.

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Handziko, Rio Christy, Yusuf Prabowo, Muhammad Insan Fathin, Ahmad Iftachil Falach, and Ridho Mahesa. "KEANEKARAGAMAN HERPETOFAUNA DIURNAL DI KAWASAN TAMAN NASIONAL GUNUNG MERBABU (Diversity of Diurnal Herpetofauna in Gunung Merbabu National Park)." Jurnal Penelitian Kehutanan Faloak 5, no. 1 (2021): 1–15. http://dx.doi.org/10.20886/jpkf.2021.5.1.1-15.

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Abstract The diversity of diurnal herpetofauna has an essential role in the ecosystem and is used as an indicator of environmental quality. This study aimed to determine the diversity of herpetofauna species in the southeast slope of the Gunung Merbabu National Park (GMbNP), which is in Ampel Sub-District, Boyolali District, Central Java. The method used in this study was Visual Encounter Survey (VES) in the transect determined purposively around the river, which can become a herpetofauna habitat. Data were collected in the morning session (08.00-14.00 WIB) for six times. This research found 1

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Chandrasekaran, Niranjana, Ramani Chandrasekar, Prathipa Anandarajan, Palanivelrajan Muthusami, Pazhanivel Natesan, and Sreekumar Chirukandoth. "Unilateral pseudobuphthalmos in an oriental rat snake (Ptyas mucosa) with oral squamous cell carcinoma." Journal of Exotic Pet Medicine 38 (July 2021): 19–20. http://dx.doi.org/10.1053/j.jepm.2021.04.002.

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Choure, Girish, Shubham Adhikari, Pallavi Choure, Ajinkya Unawane, Lal Biakzuala, and Hmar Tlawmte Lalremsanga. "First record of a leucistic Indian Rat Snake, Ptyas mucosa (Linnaeus, 1758), from India." Reptiles & Amphibians 28, no. 2 (2021): 240–41. http://dx.doi.org/10.17161/randa.v28i2.15524.

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Ng, T. B., Alfred S. L. Ng та C. C. Wong. "Adrenocorticotropin- and β-endorphin-like substances in brains of the freshwater snake Ptyas mucosa". Biochemistry and Cell Biology 68, № 7-8 (1990): 1012–18. http://dx.doi.org/10.1139/o90-149.

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Snake (Ptyas mucosa) brains (400 g) were extracted with a mixture of acetone, water, and hydrochloric acid. The precipitate (5.6 g) that formed upon addition of five volumes of acetone to the extract, designated acid–acetone powder, was subjected to gel filtration on Sephadex G-25. A large unretarded peak (SB-1) with molecular weight greater than 5000 and a small retarded peak (SB-2) with molecular weight smaller than 5000 were obtained. They were then separately subjected to ion-exchange chromatography on CM-cellulose. Adrenocorticotropic activity was detected in the fractions by their abilit

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Cheng, Christopher H. K., H. M. Lee, T. B. Ng, and C. C. Wong. "Presence of prolactin receptors in kidney and large intestine of the snake Ptyas mucosa." General and Comparative Endocrinology 79, no. 3 (1990): 351–60. http://dx.doi.org/10.1016/0016-6480(90)90065-t.

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