Relevant bibliographies by topics / Gnathostomes

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  2. Dissertations / Theses
  3. Books
  4. Book chapters

Academic literature on the topic 'Gnathostomes'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Gnathostomes"

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Sansom, Robert S., Sarah E. Gabbott, and M. A. Purnell. "Unusual anal fin in a Devonian jawless vertebrate reveals complex origins of paired appendages." Biology Letters 9, no. 3 (2013): 20130002. http://dx.doi.org/10.1098/rsbl.2013.0002.

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Jawed vertebrates (gnathostomes) have undergone radical anatomical and developmental changes in comparison with their jawless cousins (cyclostomes). Key among these is paired appendages (fins, legs and wings), which first evolved at some point on the gnathostome stem. The anatomy of fossil stem gnathostomes is, therefore, fundamental to our understanding of the nature and timing of the origin of this complex innovation. Here, we show that Euphanerops , a fossil jawless fish from the Devonian, possessed paired anal-fin radials, but no pectoral or pelvic fins. This unique condition occurs at an
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Chai, Jong-Yil, Bong-Kwang Jung, Keon Hoon Lee, et al. "Infection Status of Gnathostoma spinigerum Larvae in Asian Swamp Eels, Monopterus albus, Purchased from Local Markets in Cambodia." Korean Journal of Parasitology 58, no. 6 (2020): 695–99. http://dx.doi.org/10.3347/kjp.2020.58.6.695.

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Present study was performed to know the infection status of <i>Gnathostoma</i> sp. larvae in swamp eels from Cambodia. We purchased total 30 Asian swamp eels, <i>Monopterus albus</i>, from local markets in Pursat and Takeo Provinces and Phnom Penh on May and November 2017 and May 2018. All collected eels were transferred to our laboratory with ice and each of them was examined by artificial digestion method. A total of 15 larval gnathostomes (1-5 larvae) were detected from 55.6% (5/9) swamp eels in Pursat Province. No larval gnathostomes were found in 21 swamp eels in T
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Maisey, John G. "Gnathostomes (Jawed Vertebrates)." Short Courses in Paleontology 7 (1994): 38–56. http://dx.doi.org/10.1017/s2475263000001252.

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All living organisms possess mechanisms for obtaining nutrition. Many invertebrates also possess movable mouthparts capable of capturing prey or particulate food (e.g., polychaetes, cephalopods, arthropods and echinoderms). All living vertebrates have specialized mouthparts, and as far as we know all fossil agnathans had them also, but movable jaws supported by an internal skeleton are absent in living and fossil agnathans.
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Chai, Jong-Yil, Bong-Kwang Jung, Jin-Youp Ryu, et al. "Larval Gnathostomes and Spargana in Chinese Edible Frogs, Hoplobatrachus rugulosus, from Myanmar: Potential Risk of Human Infection." Korean Journal of Parasitology 58, no. 4 (2020): 467–73. http://dx.doi.org/10.3347/kjp.2020.58.4.467.

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Chinese edible frogs, Hoplobatrachus rugulosus, were examined to estimate the potential risks of human gnathostomiasis and sparganosis in Myanmar. A total of 20 frogs were purchased in a local market of Yangon and examined with naked eyes and the artificial digestion method after skin peeling in June 2018 and June 2019. Larvae of gnathostomes and Spirometra (=spargana) were detected in 15 (75.0%) and 15 (75.0%) frogs with average intensities of 10.5 and 6.3 larvae per infected frog, respectively. Gnathostome larvae were 2.75-3.80 (av. 3.30) mm long and 0.29-0.36 (0.33) mm wide. They had a char
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Zhu, Min, Xiaobo Yu, Brian Choo, Junqing Wang, and Liantao Jia. "An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates." Biology Letters 8, no. 3 (2012): 453–56. http://dx.doi.org/10.1098/rsbl.2011.1033.

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Almost all gnathostomes or jawed vertebrates (including osteichthyans, chondrichthyans, ‘acanthodians’ and most placoderms) possess paired pectoral and pelvic fins. To date, it has generally been believed that antiarch placoderms (extinct armoured jawed fishes from the Silurian–Devonian periods) lacked pelvic fins. The putative absence of pelvic fins is a key character bearing on the monophyly or paraphyly of placoderms. It also has far-reaching implications for studying the sequence of origin of pelvic girdles versus that of movable jaws in the course of vertebrate evolution. Parayunnanolepis
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Kuratani, Shigeru, Yoshiaki Nobusada, Naoto Horigome, and Yasuyo Shigetani. "Embryology of the lamprey and evolution of the vertebrate jaw: insights from molecular and developmental perspectives." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 356, no. 1414 (2001): 1615–32. http://dx.doi.org/10.1098/rstb.2001.0976.

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Evolution of the vertebrate jaw has been reviewed and discussed based on the developmental pattern of the Japanese marine lamprey, Lampetra japonica . Though it never forms a jointed jaw apparatus, the L. japonica embryo exhibits the typical embryonic structure as well as the conserved regulatory gene expression patterns of vertebrates. The lamprey therefore shares the phylotype of vertebrates, the conserved embryonic pattern that appears at pharyngula stage, rather than representing an intermediate evolutionary state. Both gnathostomes and lampreys exhibit a tripartite configuration of the ro
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Pose-Méndez, Sol, Isabel Rodríguez-Moldes, Eva Candal, Sylvie Mazan, and Ramón Anadón. "A Developmental Study of the Cerebellar Nucleus in the Catshark, a Basal Gnathostome." Brain, Behavior and Evolution 89, no. 1 (2017): 1–14. http://dx.doi.org/10.1159/000453654.

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The output of the cerebellar cortex is mainly released via cerebellar nuclei which vary in number and complexity among gnathostomes, extant vertebrates with a cerebellum. Cartilaginous fishes, a basal gnathostome lineage, show a conspicuous, well-organized cerebellar nucleus, unlike ray-finned fishes. To gain insight into the evolution and development of the cerebellar nucleus, we analyzed in the shark Scyliorhinus canicula (a chondrichthyan model species) the developmental expression of several genes coding for transcription factors (ScLhx5,ScLhx9,ScTbr1, and ScEn2) and the distribution of th
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Gutierrez-Mazariegos, Juliana, Eswar Kumar Nadendla, Romain A. Studer, et al. "Evolutionary diversification of retinoic acid receptor ligand-binding pocket structure by molecular tinkering." Royal Society Open Science 3, no. 3 (2016): 150484. http://dx.doi.org/10.1098/rsos.150484.

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Whole genome duplications (WGDs) have been classically associated with the origin of evolutionary novelties and the so-called duplication–degeneration–complementation model describes the possible fates of genes after duplication. However, how sequence divergence effectively allows functional changes between gene duplicates is still unclear. In the vertebrate lineage, two rounds of WGDs took place, giving rise to paralogous gene copies observed for many gene families. For the retinoic acid receptors (RARs), for example, which are members of the nuclear hormone receptor (NR) superfamily, a uniqu
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Root, Zachary D., Claire Gould, Margaux Brewer, David Jandzik, and Daniel M. Medeiros. "Comparative Approaches in Vertebrate Cartilage Histogenesis and Regulation: Insights from Lampreys and Hagfishes." Diversity 13, no. 9 (2021): 435. http://dx.doi.org/10.3390/d13090435.

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Jawed vertebrates (gnathostomes) have been the dominant lineage of deuterostomes for nearly three hundred fifty million years. Only a few lineages of jawless vertebrates remain in comparison. Composed of lampreys and hagfishes (cyclostomes), these jawless survivors are important systems for understanding the evolution of vertebrates. One focus of cyclostome research has been head skeleton development, as its evolution has been a driver of vertebrate morphological diversification. Recent work has identified hyaline-like cartilage in the oral cirri of the invertebrate chordate amphioxus, making
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Zakon, Harold H., Weiming Li, Nisha E. Pillai, et al. "Voltage-gated sodium channel gene repertoire of lampreys: gene duplications, tissue-specific expression and discovery of a long-lost gene." Proceedings of the Royal Society B: Biological Sciences 284, no. 1863 (2017): 20170824. http://dx.doi.org/10.1098/rspb.2017.0824.

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Studies of the voltage-gated sodium (Nav) channels of extant gnathostomes have made it possible to deduce that ancestral gnathostomes possessed four voltage-gated sodium channel genes derived from a single ancestral chordate gene following two rounds of genome duplication early in vertebrates. We investigated the Nav gene family in two species of lampreys (the Japanese lamprey Lethenteron japonicum and sea lamprey Petromyzon marinus ) (jawless vertebrates—agnatha) and compared them with those of basal vertebrates to better understand the origin of Nav genes in vertebrates. We noted six Nav gen
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Dissertations / Theses on the topic "Gnathostomes"

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Hill, Jennifer Janet. "Evolution of the lower jaw of gnathostomes." Thesis, University of Bristol, 2018. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.743051.

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Brazeau, Martin D. "Endocranial Morphology and Phylogeny of Palaeozoic Gnathostomes (Jawed Vertebrates)." Doctoral thesis, Uppsala universitet, Evolutionär organismbiologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9360.

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Gnathostomes, or jawed vertebrates, make up the overwhelming majority of modern vertebrate diversity. Among living vertebrates, they comprise the chondrichthyans (“cartilaginous fishes” such as sharks, skates, rays, chimaeras) and the osteichthyans (“bony fishes” or bony vertebrates, inclusive of tetrapods). Gnathostomes appear to have originated in the early Palaeozoic Era, but their early fossil record is fairly scant. The best fossils appear first in the Late Silurian and Devonian periods. Much of gnathostome diversity owes to unique adaptations in the internal skeleton of their head (the e
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Pradel, Alan. "Relations phylogénétiques des groupes majeurs de chondrichthyens paléozoïques et radiation des premiers gnathostomes : étude par microtomographie de l'anatomie interne du neurocrâne." Paris, Muséum national d'histoire naturelle, 2009. http://www.theses.fr/2009MNHN0011.

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Les gnathostomes actuels comprennent deux clades majeurs, les chondrichthyens, ou “poissons cartilagineux”, et les ostéichthyens, ou poissons osseux et tétrapodes. Les chondrichthyens sont représentés par deux clades, les Elasmobranchii (requins, raies) et les Holocephali (chimères). Les holocéphales actuels ne représentent qu’environ 4% des espèces de chondrichthyens, mais au Carbonifère (entre 360 et 300 Ma environ), une forte radiation des chondrichthyens a conduit à une diversité plus importante de taxa dont on suppose qu’ils leur sont proches. Les relations de parenté entre ces formes et
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Sauka-Spengler, Tatjana. "Évolution structurale et fonctionnelle des homéogènes de la classe orthodenticle chez les gnathostomes." Paris 7, 2002. http://www.theses.fr/2002PA077173.

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Castiello, Marco. "Neurocranial anatomy of three unusual placoderms revealed by computed tomography scanning, and their implications for early gnathostomes evolution." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/62621.

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Placoderms are the only known stem-group jawed vertebrates with jaws and their phylogenetic relationships have become central to the question of how gnathostomes evolved. Among placoderms, petalichthyids and "acanthothoracids" have taken a pivotal position in the debate on placoderm paraphyly, owing to their similarities with the jawless outgroups of jawed vertebrates. Nevertheless, their endocranial anatomy is still poorly known, preventing a thorough comparative analysis with the other early gnathostomes. In this thesis, I present the neurocranial anatomy of three exceptionally preserved pla
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Véran, Monette. "Apports des Actinoptérygiens du Trias inférieur du Spitsberg à la connaissance de l'endosquelette de la région buccale des poissons Gnathostomes." Paris 7, 1989. http://www.theses.fr/1989PA077122.

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On etudie l'evolution des relations machoires-endocrane chez les gnathostomes d'apres la decouverte chez les chondrosteens fossiles d'un os labial jouant le role d'une poulie pour le muscle adducteur de la mandibule. Une analyse cladistique est effectuee pour situer la position phyletique de plusieurs groupes d'actinopterygiens
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Barere, Brigitte. "La gnathostomose oculaire." Bordeaux 2, 1989. http://www.theses.fr/1989BOR25087.

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Plouhinec, Jean-Louis. "Etude de l'évolution de familles de gènes à homéodomaine chez les vertébrés : Analyse comparative des familles de gènes à homéodomaine Otx et Emx chez les gnathostomes, mise en place d'approches phylogénomiques et application à la recherche du gène divergent Not chez les mammifères." Paris 11, 2005. http://www.theses.fr/2005PA11T017.

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CAUCHY, ANNE. "Un cas de gnathostomose humaine revelee par un syndrome de larva migrans cutanee : revue de la litterature." Angers, 1988. http://www.theses.fr/1988ANGE1088.

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Vaz, Pato Osorio Joana. "Evolution du cerveau antérieur: "patterning" et regionalisation du cerveau de lamproie en développement." Paris 11, 2007. http://www.theses.fr/2007PA112121.

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Ce travail porte sur l’étude des mécanismes de spécification et d’organisation génétique du cerveau chez la lamproie. Les résultats principaux sont les suivants : (1) l’expression des gènes Lhx et Pax chez l’embryon de lamproie révèle un grand degré de conservation des mécanismes de « patterning » du cerveau entre cyclostomes et gnathostomes. Néanmoins, quelques différences importantes ont été observées, particulièrement au niveau du télencéphale. Ces différences sont probablement corrélées avec les changements majeurs subis par cette région au moment de la transition cyclostome/gnathostome ;
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Books on the topic "Gnathostomes"

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Kiefer, F. Crustacea Copepoda, 2: Cyclopoida Gnathostoma. de Gruyter GmbH, Walter, 2020.

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Lamprey-like gills in a gnathostome-related Devonian jawless vertebrate. Nature 440, 1183-1185, 2006.

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Book chapters on the topic "Gnathostomes"

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Lingham-Soliar, Theagarten. "The Earliest Jawed Vertebrates, the Gnathostomes." In The Vertebrate Integument Volume 1. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-53748-6_3.

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Sanpool, O., P. M. Intapan, David Blair, Yukifumi Nawa, and W. Maleewong. "Gnathostoma." In Handbook of Foodborne Diseases. CRC Press, 2018. http://dx.doi.org/10.1201/b22030-80.

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Ringelmann, R., and Beate Heym. "Gnathostoma spinigerum." In Parasiten des Menschen. Steinkopff, 1991. http://dx.doi.org/10.1007/978-3-642-85397-5_47.

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Mehlhorn, Heinz. "Gnathostoma Species." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_3916.

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Mehlhorn, Heinz. "Gnathostoma Species." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_3916-1.

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Epple, August, and Jack E. Brinn. "Ontogeny of the Gnathostome Pancreas Tissues." In The Comparative Physiology of the Pancreatic Islets. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83182-9_3.

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Mehlhorn, Heinz. "Gnathostoma Species in Comparison, Rare Human Cases." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4981.

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Mehlhorn, Heinz. "Gnathostoma Species in Comparison, Rare Human Cases." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4981-1.

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"30. Vertebrates (Agnathans and Gnathostomes)." In The Great Ordovician Biodiversification Event. Columbia University Press, 2004. http://dx.doi.org/10.7312/webb12678-031.

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Striedter, Georg F., and R. Glenn Northcutt. "The Origin of Jaws and Paired Fins." In Brains Through Time. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780195125689.003.0003.

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Between 450 and 500 million years ago, some vertebrates evolved paired fins and jaws, which made them more efficient swimmers and fiercer predators. These jawed vertebrates (i.e., gnathostomes) diversified in the Devonian period, but most died out during the end-Devonian mass extinction. The surviving gnathostomes had a more complex vestibular apparatus than their jawless ancestors, an expanded set of olfactory receptor genes, and vomeronasal receptors. A major innovation in the brains of gnathostomes was the emergence of a cerebellum that is distinct from the cerebellum-like areas found in all vertebrates. The telencephalon of early vertebrates processed primarily olfactory information, but this olfactory dominance was independently reduced in three later lineages, namely in cartilaginous fishes, ray-finned fishes, and tetrapods. In concert with the reduction in olfactory dominance, these lineages enlarged their telencephalon, relative to other brain regions, and evolved a telencephalic “dorsal pallium” that receives non-olfactory sensory information from the diencephalon.
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